Kinetic energy transforms into potential energy as the ball falls, and potential energy from the ball at rest transforms into kinetic energy as it falls, Kinetic energy transforms into thermal energy due to friction between the ball and air.
In what ways is kinetic energy transferred from the ball to the ball holder when it lands in Darnell's device?Kinetic energy is transferred from the ball to the ball holder when it lands through the process of collision. As the ball comes in contact with the ball holder, the kinetic energy of the ball is transferred to the holder through the force of impact. The ball holder will then have an increase in kinetic energy due to the transfer from the ball. This can be observed as the ball holder may move or vibrate as a result of the impact. Additionally, some kinetic energy may be lost as heat due to friction between the ball and the holder.
To know more about Potential Energy visit: https://brainly.com/question/24284560
#SPJ1
Which of the following can you do with dimensional analysis?
A. Check conversions between units using numbers only
B. Check conversions between units using units only
C. Find numeric values
D. Check conversions between units using numbers and unit
Answer:
Explanation:
B. Check conversions between units using units only.
when an object is located 36 cm to the left of a lens, the image is formed 22 cm to the right of the lens. part a what is the focal length of the lens?
The focal length of the lens when the object is at 36 cm from the lens on the left and the image is at 22cm towards the right is 13.6 cm.
In optics, the relationship between the distance of the image (v), the distance of the object (u), and the focal length (f) of the lens are given by the formula known as the Lens formula. The Lens formula is applicable for convex as well as concave lenses. These lenses have negligible thickness.
The position of the object,u= 36cm to the left of the lens.
The position of the image, v= 22 cm to the right of the lens.
According to the sign convention, if we take the direction in which the ray of light goes as the positive direction. Then u=-36cm and v=+22cm.
Now from the lens formula, 1/f=1/v-1/u, 1/f= 1/22-(-1/36), 1/f= 1/22+1/36=(36+22)/36×22 =58/792. f= 792/58 = 13.6 cm.
The focal length of the lens is 13.6cm.
For further learning about the focal length of lens, refer to the link:
https://brainly.com/question/14104969
#SPJ4
type se, service-entrance cable shall be permitted where the insulated conductors are used for circuit wiring and the uninsulated conductor is used only for equipment grounding purposes.
Type SE, service-entrance cable, is a type of electrical cable that is designed for use as a service-entrance cable.
It typically consists of two or more insulated conductors that are used for circuit wiring and an uninsulated conductor that is used only for equipment grounding purposes.
This type of cable is permitted for use in situations where the insulated conductors are used to conduct electrical power to a building or other structure, and the uninsulated conductor is used to provide a ground connection for the electrical system.
The uninsulated conductor, also known as the equipment grounding conductor, is used to safely dissipate electrical current to the ground in case of a fault or surge, protecting people and equipment. It's important to note that the use of SE cable is regulated by the National Electric Code (NEC) and the local codes, and it should be installed by a qualified electrician.
To learn more about electrical cables
https://brainly.com/question/508853
#SPJ4
When heat flows into an object, its thermal energy increases, and so does its temperature.
What does the amount of temperature increase depend on?
An object's thermal energy and temperature rise as a result of heat flow into the thing. Three factors determine the amount of temperature increase: 1) The amount of heat added, 2) the object's size, and 3) the substance used to create the object.
What happens when thermal energy increases?The average kinetic energy of an object's particles rises as its temperature rises. The thermal energy of the object grows as the average kinetic energy of its constituent particles rises. Therefore, when an object's temperature rises, so does its thermal energy.
Thermal energy is added to a substance during heating. As a result, its temperature increases and its particle motion accelerates. When a substance cools, thermal energy is lost, which slows down the movement of its particles and lowers the substance's temperature.
When heat enters an object, both its temperature and thermal energy rise. There are three factors that affect how much the temperature rises: The amount of heat added, the object's size, and the material it is made of are the first three variables.
To learn more about thermal energy refer to:
https://brainly.com/question/19666326
#SPJ1
what changes must a gas undergo to become a liquid?
The conversion of gas into liquid happens due to condensation.
Condensation is the process through which the physical state of matter changes from the gaseous phase into the liquid phase. For example, condensation occurs when water vapour (gaseous form) in the air changes into liquid water when it comes in contact with a cooler surface. When the water in the air comes in contact with a cold surface, it condenses to form water droplets. The opposite of condensation is evaporation reaction.When temperature is increased and pressure is decreased, the gaseous state is converted into liquid state on this impact. This also can be reversed by decreasing the temperature and increasing the pressure.To know more about gases visit:
https://brainly.com/question/30385738
#SPJ4
A woman, using a manual jack to lift her car, expends 10. 0 kJ of energy in the process. If she raises her 1 500 kg car off the ground by 0. 50 m, what is her efficiency ?
The woman's manual jack has an efficiency of 7.4.
To calculate the efficiency of a system, you need to know the input energy and the output energy.
In this case, the input energy is the 10.0 KJ of energy that the woman expends using the manual jack, and the output energy is the work that she does in lifting the car off the ground.The work that the woman does in lifting the car off the ground can be calculated using the equation: W = Fd, where
W is the work done,
F is the force applied, and
d is the distance over which the force is applied.
In this case, the force applied is the weight of the car (F = mg), and the distance is 0.50 m that the car is lifted off the ground.
Plugging these values into the equation, we find that the work done in lifting the car off the ground is:
W = (1500 kg)(9.8 m/s²)(0.50 m) = 74,000 J.
The efficiency of the system can then be calculated using the equation efficiency = (output energy) / (input energy).
Plugging in the values for the output energy (74,000 J) and the input energy (10,000 J), we find that the efficiency of the system is :
Efficiency = (74,000 J) / (10,000 J) = 7.4.
To know more about work visit:
https://brainly.com/question/30263539
#SPJ4
You want to move a 41-kg bookcase to a different place in the living room. If you push with a force of 65 N and the bookcase accelerates at 0.12 m/s2, what is the coefficient of kinetic friction between the bookcase and the carpet?
Sodium ions are used by your body every time you move a muscle. The difference between the na+ ions and atomic na is that.
The sodium atom has an extra electron. If you compare the charges, it is clear that ionic sodium has one fewer electrons than atomic sodium because it has one more positive charge.
How do Na+ ions and atomic Na differ from one another?They have different chemical properties because of variations in the number of electrons. Although the sodium atom and sodium ion have the same number of protons, the sodium atom is poisonous while the sodium ion is not poisonous, and the sodium ion is positively charged while the sodium atom is neutral.
Because we have a Na ion, the ratio of electrons to protons is not equal. Due to the presence of a cation, there are one more protons overall. Ten electrons make up the total. There are 10 electrons and 11 protons as a result.
To know more about sodium ions visit:
https://brainly.com/question/9147801
#SPJ4
what is the speed of a point on the earth's surface located at 2/3 of the length of the arc between the equator and the pole, measured from equator? (hint: what is the radius of the circle in which the point moves?)
232.5 m/s is the speed of the earth's surface where 2/3 of the length of the arc between the poles and the equator.
Latitude is the angle between a place on the earth's surface and the planet's centre. It identifies a point's north-south location on the surface of the Earth. Latitude is an angle that can be either north or south of 0° at the equator and 90° at the poles.
The radius of the earth's surface is 6.37 X [tex]10^6[/tex] metres,
and its angular displacement from the pole is 90 degrees,
According to the information provided above.
So the 2/3 is 60 degrees.
Since v = [tex]\omega[/tex]r,
where r is the radius of the earths surface
[tex]\omega[/tex] is the angular displacement
r = 6.37x[tex]10^6[/tex] x cos(60)
r = 3.185x[tex]10^6[/tex]m,
v = 7.3x[tex]10^{-5}[/tex] x 3.185x[tex]10^6[/tex]
v =232.5 m/s
To learn more about Angular displacement :
https://brainly.com/question/13649539
#SPJ4
guys pls help
Question 7 (Multiple Choice Worth 2 points)
(01.01 MC)
Researchers conduct an experiment and obtain different results from the original investigation. They publish their findings as a new discovery. Which statement best describes how the researchers can make their findings more reliable?
O Scientific knowledge cannot change, so nothing will make it more reliable.
O Complete more trials and have other scientists repeat the experiment.
O Pay other researchers to show the same evidence.
O Write another article persuading why they are correct.
A study's outcome is the results of the study.All potential outcomes make up the sample space of an experiment.
What do the findings of a scientific experiment go by? A study's outcome is the results of the study.All potential outcomes make up the sample space of an experiment.So that other scientists might try to reproduce the results for future research, it is crucial for the scientist to precisely describe the experiment and how it is set up and conducted.One (or both) of the two categories of data: qualitative and quantitative—will be produced as the result of an experiment.The four main design categories with regard to user research are correlational, experimental, quasi-experimental, and single subject.These research designs progress from those with high validity and generalizability to those with less validity and generalizability.To learn more about experiment refer
https://brainly.com/question/17274244
#SPJ1
A 2. 00-m long piano wire with a mass per unit length of 12. 0 g/m is under a tension of 8. 00 kn. What is the frequency of the fundamental mode?.
The frequency of the fundamental mode of the piano wire is 166.67 Hz.
To determine the frequency of the fundamental mode of a piano wire, we can use the equation:
f = (1 / 2L) * (T / μ)^0.5
where f is the frequency of the fundamental mode, L is the length of the wire, T is the tension in the wire, and μ is the mass per unit length of the wire.
Given that the wire is 2.00 m long, has a mass per unit length of 12.0 g/m and a tension of 8.00 kn, we can substitute these values into the equation:f = (1 / 2 * 2.00 m) * (8.00 kn / (12.0 g/m))^0.5
To solve this equation we need to convert the units of tension to N and the mass per unit length to kg/m.
The tension is given in kn and it needs to be converted to N by multiplying it by 1000, the mass per unit length is given in g/m and it needs to be converted to kg/m by multiplying it by 10^-3.
f = (1 / 2 * 2.00 m) * (8000 N / (12*10^-3 kg/m))^0.5
Now we can solve the equation:
f = (1 / 2 * 2.00 m) * (666.67 N/kg)^0.5f = (1 / 4) * (666.67 N/kg)^0.5
f = 166.67 (N/kg)^0.5
f = 166.67 (s^-1)^0.5
f = 166.67 Hz
Therefore, the frequency of the fundamental mode of the piano wire is 166.67 Hz.
Learn more about frequency at :https://brainly.com/question/5102661
#SPJ4
Which two statements are true of mechanical waves?
A. They travel by causing particles of matter to vibrate.
B. They use a medium to transfer energy.
C. They transfer energy by disturbing electric and magnetic fields.
D. They do not need a medium to transfer energy.
Two statements, that are true of mechanical waves, are:
They travel by causing particles of matter to vibrate. They use a medium to transfer energy.What is mechanical wave?
A mechanical wave is a wave in physics that involves the oscillation of matter and transmits energy across a medium. While waves can travel great distances, the transmission medium—the material—can only move so far.
The oscillating material stays close to its initial equilibrium position as a result. Only medium with elasticity and inertia can form mechanical waves. Transverse, longitudinal, and surface waves are the three different forms of mechanical waves.
Learn more about mechanical wave here:
https://brainly.com/question/24459019
#SPJ1
assume your eyes receive a signal consisting of blue light, 470 nm. the energy of the signal is 2.50 1014 j. how many photons reach your eyes?
The number of photons that reach the eye from the signal of wavelength 470 nm is 59.1 x 10³¹
The wavelength of the light = 470 nm
The total energy of the signal = 2.50 x 10¹⁴ J
The photons that reach the eye can be found using the formula
E = hc /λ
where E is the energy of one photon
h is the Planck's constant
c is the speed of light
λ is the wavelength of light
Let us substitute the known values in the above equation,we get
[tex]\displaystyle E = \frac{6.63 \times 10^{-34} \times 3 \times 10^8}{470 \times 10^{-9}}[/tex]
= 0.0423 x 10⁻¹⁷
Thus, the number of photons can be found
n = Total energy / energy of one proton
= 2.50 x 10¹⁴ / 0.0423 x 10⁻¹⁷
= 59.1 x 10³¹
Learn more about the photons in
https://brainly.com/question/20912241
#SPJ4
How is total magnification calculated?
Calculating total magnification involves multiplying the power of the objective and ocular lenses.
How is a microscope's magnification determined?The microscope's magnification is relatively simple to determine. Just double the eyepiece's magnification by the objective lens's magnification. Nearly invariably, the barrel (objective) or top of a microscope's eyepieces and objectives are inscribed with the instrument's magnification (eyepiece).
In other words, the total magnification of a microscope is calculated by multiplying the objective lens's magnification by the optical lens' magnification.
learn more about total magnification
https://brainly.com/question/26274051
#SPJ4
Different dealers may sell the same car for different prices. The sale prices for a particular car are normally distributed with a mean and standard deviation of 262626 thousand dollars and 222 thousand dollars, respectively. Suppose we select one of these cars at random. Let x=x=x, equals the sale price (in thousands of dollars) for the selected car. Find p(x>25)p(x>25)p, left parenthesis, x, is greater than, 25, right parenthesis. You may round your answer to two decimal places.
The probability that the sale price for a randomly selected car is greater than $25,000 is p(x>25) = 0.0228
B. To find the probability that the sale price for a randomly selected car is greater than $25,000, we need to use the cumulative distribution function (CDF) of the normal distribution.
The CDF of the normal distribution is given by P(X≤x)=F(x)=1/2*[1+erf((x-μ)/(σ*√(2)))]
Where x is the sale price, μ is the mean of the distribution, σ is the standard deviation of the distribution and erf is the error function.
Since we are looking for the probability that x>25, we need to subtract the probability that x≤25 from 1.
By plugging in the given values we can find out the probability, p(x>25) = 1 - P(X≤25) = 1 - F(25) = 0.0228 (approx)
For more questions like Probability click the link below:
https://brainly.com/question/30034780
#SPJ4
A ball falls down 30 meters from the top of a building. If the ball
weighed 1. 2 kg, what is the gravitational potential energy lost
by the ball? Estimate g as 9. 81.
The potential energy lost by the ball is 353.16 J, if the mass of the ball is 1.2 kg and the height from which it drops is 30 m.
Actually energy lost is not scientifically correct to say here, because energy never lost or destroyed, rather it converts from one form to another. Potential energy does not get lost here, but it converts into kinetic energy or heat energy or both.
Potential energy is the energy possessed by an object due to its position relative to the other objects. Potential energy(P) is mathematically described as follows:
P = mgh
Where m is mass, g is acceleration due to gravity, and h is the height of the object. So,
P = 1.2 × 9.81 × 30
P = 353.16 Joules
To know more about potential energy, here
https://brainly.com/question/24284560
#SPJ4
Billiard ball A, mass 0. 17 kg, is moving due east with a velocity of 4. 0 m/s. It strikes
stationary billiard ball B, which has the same mass. After the collision, ball A moves
at an angle of 30° north of east with a velocity of 3. 5 m/s. Ball B moves at an
angle of 60° south of east. What is the speed of ball B?
a
2 m/s
b
8 m/s
С
10 m/s
d
5 m/s
The system that is colliding maintains its momentum. As a result, the ball B's speed is 2m/s (option -a) when it has the same mass as the ball A.
Describe momentum.A body's capacity to produce the greatest displacement from an applied force is known as momentum. It is the result of adding mass and speed. The two bodies' total initial momentum and total final momentum are equal in a collision.
Consequently, let u be the starting velocity and v be the ending velocity.
m₁ u₁+ m₂ u₂ = m₁ v₁ + m₁ v₂
m₁ = 0.17 kg
u₁ = 4 m/s
m₂ = 0.17 kg
u₂ = 0
Then initial momentum = 0.17 × 4 m/s + 0 = 0.68 kg m/s
v₁ = v₁ cos 30° = 3.5×√3/2
v₂ = v₂cos 60 = v/2
0.68 kg m/s = (0.17 × 3.5×√3/2 ) + (0.17 × v₂/2)
3.5×√3/2/2 + v₂/2 = 4
3.5√3 + v₂ = 8
then v₂ = 8-3.5(1.732)
v₂ = 1.94m/s. = 2m/s
To know more about speed visit:
https://brainly.com/question/21694238
#SPJ4
if you are standing on mars and you stepped onto a weight scale, what would it say if on earth you weighed 150 lbs?
if you are standing on mars and you stepped onto a weight scale, Your weight would be 60 lbs if on earth you weighed 150 lbs because of Mars Gravity which 40% that of the earth.
What is Gravity?The fundamental interaction which causes all objects with mass or energy to attract one another is termed as Gravity.
The moon is maintained in its orbit around Earth by gravity, as are the planets in their orbits around the sun. Ocean tides are a result of the moon's gravitational effect on the oceans. The stuff that stars and planets are comprised of is pulled together by gravity to form them.
The first to create a quantitative theory of gravity was Isaac Newton, who postulated that the force of attraction between two bodies is inversely proportional to the square of the distance between them and inversely proportional to the product of their masses.
Calculation:
The 40%of 150lbs= 40*150/100= 60lbs
To know more about Gravity Visit
https://brainly.com/question/14874038
#SPJ4
if your weight on the earth is 850 n, but only 255 n on another planet. what is the best estimate of the gravitational acceleration on that planet?
The best estimate of gravitational acceleration on that planet is 0.3 times the gravitational acceleration on Earth.
What is the gravitational field strength?The gravitational field strength, also called acceleration due to gravity or gravitational acceleration, is the gravitational force that acts on a mass of object. It can be expressed as
g = F/m
Where
g = gravitational field strength (N/kg or m/s²)F = gravitational force or weight (N)m = mass of object (kg)If your weight on Earth is 850 N, it is 255 N on other planet.
Find the best estimate of the gravitational acceleration on the other planet!
Let's say
Weight on Earth = W₁Weight on other planet = W₂Gravitational acceleration on Earth = g₁Gravitational acceleration on the other planet = g₂From the explanation above, the formula can be written as
g = W/m
The mass of object is always the same in every where it is. So,
m₁ = m₂
850/g₁ = 255/g₂
g₂ = 255g₁/850
g₂ = 0.3g₁
Hence, the gravitational acceleration on the other planet is 0.3 times the gravitational acceleration on Earth.
Learn more about gravitational acceleration here:
brainly.com/question/30228254
#SPJ4
dimensional ANALYSIS
Dimensional analysis is a method used to convert units of measurement from one system to another.
How is Dimensional analysis applied?Dimensional analysis is based on the idea that physical quantities can be described by their dimensions, such as length, mass, and time. By using the conversion factors between different units of measurement, dimensional analysis allows you to convert a given value from one unit to another without the need for mathematical calculations.
This method is useful in fields such as physics, engineering, and chemistry, and can be applied to problems involving conversions between different units of measurement, such as inches to centimeters or pounds to kilograms.
Learn more on Dimensional analysis here: https://brainly.com/question/24514347
#SPJ1
The complete question is:
How do you explain Dimensional analysis?
if the generators that the dam employs are 90 % efficient, what is the maximum possible electric power output?
The maximum possible electric power output is 1339 MW. The result is obtained by multiplying the efficiency by the power input.
What is efficiency?Efficiency of an engine can be expressed as
η = P output/ P input
P is the power. Power is the amount of energy per unit of time.
Your question is incomplete, but most probably your full question was
When the Glen Canyon hydroelectric power plant in Arizona is running at capacity, 690 m³ of water flows through the dam each second. The water is released 220 m below the top of the reservoir. If the generators that the dam employs are 90% efficient, what is the maximum possible electric power output?
We have
Water flow rate, Q = V/t = 690 m³/sHeight, h = 220 mEfficiency, η = 90%Find the maximum possible power output!
The density of water is ρ = 1,000 kg/m³ and the acceleration due to gravity is 9.8 m/s².
We calculate the power of the generator (P input).
P = Energy/time
P = mgh/t
P = ρgh × V/t
P = 1000 (9.8) (220) × 690
P = 1488 × 10⁶ Watt
P = 1488 × MW
The power output depends on the efficiency of the engine.
P output = η × P input
P output = 90% × 1488 MW
P output = 0.9 × 1488 MW
P output = 1339 Mega Watt
Hence, the generator will have the maximum possible power output of 1339 MW.
Learn more about efficiency of an engine here:
brainly.com/question/13148373
#SPJ4
A neutron star is a highly condensed remnant of a massive star in the last phase of its evolution. It is composed of neutrons (hence the name) because the star's gravitational force causes electrons and protons to "coalesce" into the neutrons. Suppose at the end of its current phase, the Sun collapsed into a neutron star (even though it realistically couldn't because it does not have enough mass) of radius 14. 2 km, without losing any mass in the process. (a) Calculate the ratio of the gravitational acceleration at the surface of the Sun following its collapse compared to its value at the surface of the Sun today. (b) Calculate the ratio of the escape speed from the surface of the neutron-Sun to its value today
The ratio of gravitational acceleration at the surface of the collapsed Sun to its current value is 2.9510^11 and the ratio of the escape speed from the surface of the neutron-Sun to its value today is 1.8610^5
To find the ratio of gravitational acceleration at the surface of the collapsed Sun to its current value, we use the formula for gravitational acceleration: g = GM/R^2, where G is the gravitational constant, M is the mass of the Sun, and R is the radius of the neutron star.
We can see that the mass of the Sun does not change during the collapse so it will cancel out of the ratio, and we're left with g_neutron_star/g_sun = (R_sun/R_neutron_star)^2 =(69610^3/14.210^3)^2=2.9510^11
B. To find the ratio of the escape speed from the surface of the neutron-Sun to its value today, we use the formula for escape speed:
v_escape = sqrt(2GM/R)
where G is the gravitational constant, M is the mass of the Sun, and R is the radius of the neutron star. Since the mass of the Sun does not change, it will cancel out of the ratio, and we're left with v_escape_neutron_star/v_escape_sun = (R_neutron_star/R_sun) =(14.210^3/69610^3)=1.8610^5
For more questions like Gravitational acceleration click the link below:
https://brainly.com/question/14374981
#SPJ4
A duck is thrown up to a height of 22.50 meters. What is the initial velocity of the duck?What is its velocity at its maximum height?What is the acceleration at max height?How long does it take to get to max height?How long is the duck in the air?What will be the duck's final impact velocity?
With the use of formulas, the answers are;
initial velocity = 21 m/s
velocity at its maximum height = 0
acceleration at max height = 9.8 m/s²
time taken to get to max height = 2.14 s
total time in air = 4.29 s
the duck's final impact velocity = 21 m/s
What is Velocity ?Velocity can be defined as the distance travelled in a specific direction per time taken.
Given that a duck is thrown up to a height of 22.50 meters.
What is the initial velocity of the duck?
At the maximum height, final velocity v = 0
Using v² = u² - 2gH where
g = 9.8 m/s²H = 22.5 m0 = u² - 2 × 9.8 × 22.5
u² = 441
u = √441
u = 21 m/s
What is its velocity at its maximum height?
At the maximum height, final velocity v = 0
What is the acceleration at max height?
Acceleration will be equal to acceleration due to gravity = 9.8 m/s²
How long does it take to get to max height?
Let us use the formula
v = u - gt
0 = 21 - 9.8t
9.8t = 21
t = 21/9.8
t = 2.14 s
How long is the duck in the air?
That is its period T = 2t
T = 2 × 2.14
T = 4.29 s
What will be the duck's final impact velocity?
The final impact velocity will be the same with the initial velocity. That is,
v = 21 m/s
Learn more about Velocity here: https://brainly.com/question/24445340
#SPJ1
which statement best explains why a salt solution conducts electricity? responses the ions move freely in water but lose their charges. the ions move freely in water but lose their charges. the salt crystals dissolve and form bridges by which electric charges move. the salt crystals dissolve and form bridges by which electric charges move. the ions move freely in water and carry electric charges. the ions move freely in water and carry electric charges. the salt crystals remain intact and form bridges by which electric charges move.
Pure water is not so much conductive, and only a small piece of current can move during the water. When salt or sodium chloride (NaCl) is melted in it, Yet, the salt molecules divided into two pieces, a sodium ion and a chlorine ion.
The sodium ion is lost an electron, that gives it a positive charge. The chlorine ion has an more electron, giving it a negative charge.
An electric origin sending a current through water will have two terminals: one is negative that conducts electrons into the water, and another is positive one that removes them.
Opposite charges attract, so the sodium ions are engaged to the negative terminal, and the chlorine to the positive.
The ions form a bridge, the sodium ions fascinating electrons from the negative terminal, passing them to chlorine ions and then the positive terminal.
To know more about Electric Charge:
https://brainly.com/question/9194793
#SPJ4
if an event were to take place on the sun, how long would it take for the light it generates to reach us?
If an event were to take place on the sun, it would take 8 minutes for the light it generates to reach us.
What do you mean by astronomical unit ?The precise distance between Earth and the Sun fluctuates depending on where the planet is in its elliptical orbit. Around 150 million kilometres separate the Earth and the Sun on average (the mean distance) (93 million miles).
One astronomical unit is another name for the average separation between the Earth and the Sun (or AU). This distance is calculated to be 149, 597, 870.7 kilometres (92,955,887.6 miles).
Around the first week of July is when the Earth's apogee, or closest point to the Sun, occurs. It is roughly 152 million kilometres away (94.4 million miles).
The first week of January marks perihelion, the point in time when the Earth is closest to the Sun. It is roughly 147 million kilometres away (91.3 million miles).
Therefore, If an event were to take place on the sun, it would take 8 minutes for the light it generates to reach us.
To know more about perihelion refer to:
brainly.com/question/17392860
#SPJ4
a rock is thrown downward from the top of a 37.6-m-tall tower with an initial speed of 11 m/s. assuming negligible air resistance, what is the speed of the rock just before hitting the ground?
−29.27m/s is the speed of the rock just before hitting the ground when a rock is thrown downward from the top of a 37.6-m-tall tower with an initial speed of 11 m/s. assuming negligible air resistance.
What do you mean by initial speed?When gravity first exerts force on an object, its initial velocity describes how quickly the object moves. The final velocity, on the other hand, is a vector number which gauges a moving body's speed and direction after it has reached its maximum acceleration.
To find: the speed of the rock just before hitting the ground
v f2 =v i2 +2aΔy, with v i =−11m/s and Δy=−37.6m
vf2 =v i2+2aΔy
v2=(−11m/s) 2+2(−9.80m/s 2)(−37.6m)
v=−29.27m/s
To know more about initial speed visit
https://brainly.com/question/19348675
#SPJ4
Why is velocity of a ball zero at the highest point?
Velocity of a ball is zero at the highest point due to the ball is momentarily at rest and is not in motion in any x-y-z direction.
This occurs because the motion of the ball is affected by the force of gravity, which acts to pull the ball downward. As the ball is thrown or launched upward, it initially has a velocity in the upward direction. However, as it rises, the force of gravity begins to slow the ball down and eventually brings it to a stop at the highest point of its trajectory. At this point, the force of gravity is acting downward on the ball with the same magnitude as the initial upward velocity, and thus they cancel each other out, resulting in a net velocity of zero. After the highest point, the ball starts to fall and the velocity becomes negative, it starts to gain velocity as it falls.
To know more about velocity please refer: https://brainly.com/question/15869150
#SPJ4
Two horizontal parallel plates have equally spaced vectors going from the top plate to the bottom plate labeled e. there is also a delta v between the plates. the electric field inside a battery generates an electric potential difference of 12 v. the plates are separated by a distance of 0.25 m. what is the strength of the electric field? the strength of the electric field is .
The strength of the electric field is 48 N/C.
The electric field (E) is the force exerted per unit charge. It is calculated by dividing the electric potential difference (ΔV) by the distance between the plates (d). In this case, the electric potential difference is 12 V and the distance between the plates is 0.25 m. Therefore, the electric field is
E = ΔV/d
E= 12 V / 0.25 m
E= 48 N/C.
The electric field is a vector and it points in the direction of the force that would be exerted on a positive test charge placed in the field. The direction of the electric field vectors is from the positive plate to the negative plate.
To know more about electric field click below:
https://brainly.com/question/8971780#
#SPJ4
the force exerted on a particle experiencing a certain kind of force is given by f of t is equal to negative 3 times t to the 4th power plus 8 times t to the 3rd power plus 5, with f measured in newtons (n) and t measured in s. at what time is the most force exerted on the particle?
The most force is exerted on the particle when t=3/2 seconds. You can double check this by substituting t = 3/2 into the original function f(t) and see that it is indeed the maximum value of the function.
Time is scalar quantity. The international unit of time is second. To find the time at which the most force is exerted on the particle, we need to determine the maximum value of the function f(t) = [tex]-3t^4 + 8t^3 + 5.[/tex]
The first step is to find the derivative of the function f(t) with respect to t.
[tex]f'(t) = -12t^3 + 24t^2[/tex]
Now we need to find the critical points of the function by setting the derivative equal to zero and solving for t
f'(t) = 0
[tex]-12t^3 + 24t^2 =0[/tex]
[tex]t^2(2t-3)=0[/tex]
t=0, t=3/2
The next step is to check the second derivative, if the second derivative is positive then the critical point is a local minimum and if the second derivative is negative then the critical point is a local maximum.
f''(t) = [tex]-36t^2 + 48t[/tex]
f''(0) = 0 and f''(3/2) = -9, so t=0 is a local minimum and t=3/2 is a local maximum.
So the most force is exerted on the particle when t=3/2 seconds.
Learn more about force, in here https://brainly.com/question/13191643
#SPJ4
to what minimum temperature should food that is cooked cold and reheated for hot holding be reheated
The minimal temperatures for cooking, cooling, and reheating food are 75 °C for cooking, 8 °C for cooling, and 165 °F for heating.
As soon as feasible, food should be refrigerated to prevent the growth of micro organisms. This should ideally cool to less than 8 degrees Celsius in 90 minutes. There are various techniques for quickly cooling food.
If at all feasible, cook food until it reaches 75 °C or higher within. The bulk of food-taining bacteria are eliminated at this stage of heat. Use a thermometer to monitor the internal temperatures of the food components as they cook. Cook mince, sausages, entire birds, and meat fillings all the way through.
To know more about temperatures
https://brainly.com/question/30229670
#SPJ4