3440 KG/m3 is the same as 3.44 g/ cm3As the SI unit of density is kilogram per cubic meter so, we need to convert g/cm3 to kilogram per cubic meter
As density is the property of matter that deals with the mass per cubical unit place it occurs or places it is required. Or we can say it also deals with the floating property of a substance. Density decides the floating of an object. The less the density more floating the object is and it does not sink easily. it has a formula as
d= m/v..........(Mass/Volume)
To convert gram/ cm3
1 g/cm3 is the same as 1000kg/meter cubic
as
10 gram to kg, divide it by 1000, and 10/1000 = 0.01 kg
so 1000 gram = 1 kg
for cm to m, we need to multiply by 100
so
3.44* (100)*100*100/1000
3440000/1000
3440kg/m3
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A lighthouse has a shadow that is 36 feet long. Zara is 4 feet tall, and has a shadow that is 3 feet long. The two triangles formed are similar because the angle to the sun is the same. Use this information to complete the statement about the lighthouse.
Answer:
height of the lighthouse = 48 ft
Lighthouse is 4x higher than Zara
Explanation:
Solve this as a similar triangles problem (geometry):
let h = height of the lighthouse
h/36 = 4/3
3h = 144
h = 144/3 = 48
proportionality factor = 4/3 = 48/36 = 1.33
What does an acceleration of 0 mean?
An acceleration of zero means that the velocity of an object is not changing. It means that the object is either at rest or moving at a constant velocity.
Acceleration is a measure of how quickly an object's velocity is changing. It is a vector quantity and it has both magnitude and direction. The formula for acceleration is:
a = (vf - vi) / t
Where a is acceleration, vf is final velocity, vi is initial velocity and t is the time. If the acceleration of an object is zero, it means that the final velocity is equal to the initial velocity, and the object is not changing its speed. This can happen when an object is in a state of equilibrium, meaning that the net force acting on the object is zero. An object in equilibrium is at rest or moving at a constant velocity and it is not accelerating. In summary, an acceleration of zero means that the velocity of an object is not changing. The object is either at rest or moving at a constant velocity and it is in a state of equilibrium.
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What is the equivalent resistance in this circuit? ω what is the current in this circuit? a
The equivalent resistance in this circuit is the sum of all resistances, which in this case is 15Ω and current in circuit is 3 amps.
Evaluating :Since they are all connected in series, we can calculate their total by:
R total = R1 + R2 + R3...
R total = 2 + 3 + 4 + 6
R total = 15
The circuit total resistance is now 15 ohms, and
the potential difference applied to the circuit is 45 volts. At this point, we are able to employ:
I = 3 amps (A) V = IR
Isolate for I V/R = 45/15
Current in a circuit = 3 amps.
What is circuit?A circuit is an electrical network made up of a closed loop of conductors, including transistors, inductors, capacitors, and resistors, that allow electricity to flow from one place to another. It serves as the fundamental structural component of all electronic systems, and its parts are connected to create full electronic systems.
In order for modern electronic devices like computers, smartphones, and other digital devices to function, they need to be able to control, regulate, and measure electrical energy.
According to Ohm's Law, which states that the current (I) is equal to the voltage (V) divided by the resistance (R), the current in the circuit can be calculated.
Incomplete question :
What is the equivalent resistance in this circuit? ω what is the current in this circuit? when R1= 2 , R2 = 3 ,R3 = 4 and R4 = 6, voltage = 45 .
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Answer:
15, 3
Explanation: EDGE.
Damron Inc. Wants to purchase a shear for their sheet metal shop and chooses dimensions of cost, reliability, and flexibility as critical to their long term success. They evaluate three different shears and rate their performance on each criterion on a scale from 1 (poor) to 5 (excellent). What is the value index for the shear made by Belsky Manufacturing? Dimension Importance Belsky Mfg. Reber Ind. Floyd Co. Cost 4 1 5 3 Reliability 2 5 2 1 Flexibility 3 3 3 4 A. 23 B. 81 C. 18 D. 9
Rate the effectiveness of four different shears on a scale of 1 to 10 for each category. Reber thinks that the shear should be bought.
Describe flexibility.Flexibility is the term used to describe a joint's or a collection of joints and muscles' ability to move through a range of motion efficiently painlessly.
Flexibility is the capacity to swiftly and collectedly adapt to brief change, enabling you to successfully handle unforeseen issues or duties. Here are some instances of what you could do: Offer to help another team member if you see them to be overworked.
Flexibility in the workplace refers to the capacity to quickly adjust to novel situations as they emerge. A flexible worker can alter their plans to deal with or get around unexpected challenges.
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008 10.0 points
The tape in a videotape cassette has a total
length 279 m and can play for 1.9 h. As the
tape starts to play, the full reel has an outer
radius of 49 mm and an inner radius of 13 mm.
At some point during the play, both reels will
have the same angular speed.
What is this common angular speed?
Answer in units of rad/s.
I
t
The common angular speed is 0.11rad/sec
What is Angular Speed ?
The rate of change of angular displacement is referred to as angular speed. The speed of an object in rotation is known as its angular speed. In radians, the distance traveled is denoted by the symbol. The amount of time is expressed in seconds. The angular speed is therefore expressed in radians per second, or rad/s.
The orbital angular velocity of any of the three vectors (same for all) with respect to its own center of rotation is the definition of the spin angular velocity of a frame, which is consistent with the broader definition.
d = 279m
t = 1.9 h 6840sec
v = d/t
v = 279/6840
v = 0.04m/s
Also, to find angular speed:
v = rw
w = v/r
r = [tex]\sqrt{x} (r1^2 +r2^2)\\[/tex]/ 2
r = 35.8mm = 0.358m
w = 0.04/0.358
w = 0.11 rad/s
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What is the trend of the graph of the linear equation if the graph has a slope of zero?
The graph of the linear equation with the slope of zero is a flat horizontal line.
A slope of zero refers to the scenario where the value of y is constant, no matter what the value of x is. In the graphical representation, the slope of zero results in a flat line in the horizontal direction. , which is the rise over run is zero.
Therefore, it is concluded that a graph of a linear equation having a slope of zero makes a perfectly flat line in the horizontal direction. No matter what the value of x is, y always has the same, neither it increases nor it decreases.
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which of the following statements are true of projectile motion? select 2. a gravity is the only force influencing the motion of a projectile. b the acceleration of a projectile is downward. c projectiles move through the air with a constant velocity. d the acceleration of a projectile is horizontal. e projectiles are objects that experience free fall.
B The acceleration of a projectile is downward. E Projectiles are objects that experience free fall.
The acceleration of a projectile is not constant; in fact, it is constantly changing due to the force of gravity. The acceleration of a projectile is downward, due to the force of gravity acting upon it. Projectiles are objects that experience free fall, meaning they experience an acceleration due to gravity as they move through the air and do not remain at a constant velocity.
Therefore, statements B and E are true, while statements A, C, and D are false.
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a rotary comedy with power of 285 watts and period of 5 minutes rotates 5 rounds. calculate the energy (work) it uses to the nearest joule.
The energy (work) used is 8,850 Joules.
Energy = Power x TimeEnergy = 285 Watts x (5 minutes x 60 seconds)Energy = 285 Watts x 300 secondsEnergy = 85500 JoulesEnergy = 8,850 Joules (to the nearest Joule)The energy (work) used by the rotary comedy with a power of 285 Watts and a period of 5 minutes that rotates 5 rounds can be calculated by multiplying the power by the time.
The power is 285 Watts and the time is 5 minutes or 300 seconds, so the energy used is 285 Watts x 300 seconds which is equal to 85500 Joules. To the nearest Joule, this is 8,850 Joules. This answer can be verified by using the equation Power = Work / Time. 8,850 Joules divided by 300 seconds is equal to 285 Watts which is the power of the rotary comedy.
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What are the major forces that drive movements in the atmosphere?
The Moon's velocity changes continuously as it orbits the earth, bat on average its translational velocity comes out to about 2.3 kilometers per second. what is tthis speed in proper SI units
The SI unit of the Moon's average translational velocity is 2,300 m / s.
What is the speed of the moon in proper SI unit?
SI unit is the standard form of representing both derived quantity and fundamental quantities.
The SI unit of velocity include the following;
meter per second = m / s
kilometer per hour = km / h
The SI unit of the Moon's average translational velocity is calculated as follows;
v = 2.3 km / s
1 km = 1,000 m
v = ( 2.3 km / s ) x ( 1000 m / 1 km )
v = 2,300 m / s
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What is the acceleration and velocity at the top?
The velocity of the body at the top, when thrown up, is zero. While the acceleration of the body at that point would be equal to acceleration due to gravity ([tex]g[/tex]).
The velocity of a body is the rate of displacement of the body in a particular given direction.
Let the displacement of the body be Δ[tex]x[/tex]
Velocity(ν) of the body would be Δ[tex]x[/tex] / Δ[tex]t[/tex]
The acceleration is the value of change in velocity over the change in time. This allows you to measure the rate of change of velocity of a body over a period of time.
Change in velocity = Δ[tex]v[/tex]
Acceleration of the body would be Δ[tex]v[/tex] / Δ[tex]t[/tex]
When a body is thrown up, its velocity decreases due to the opposite force action on the body i.e. the gravitational force. thus there is a downward acceleration due to gravity that causes the velocity of the body to decrease which ultimately is reduced to 0 at the topmost point.
Although, the constant acceleration due to gravity is still acting the body, thus causing it to fall back under freefall. Thus the acceleration at the topmost point is equal to the acceleration due to gravity ([tex]g[/tex]). The standard value of acceleration due to gravity on earth's surface is 9.8[tex]m/s^{2}[/tex].
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The correct question should be:
A ball is thrown up, what is it's velocity and acceleration at the top.
Where should a force be applied on a lever to produce the most torque?
When the angel is 90 degrees then a force should be applied on a lever to produce the most torque.
In order to use the methods set forth in this section, the relationship between flux linkage, current, and mechanical position must be known. It will be assumed herein that this relationship can be expressed in one of two forms.
In the first form, the flux linkage may be expressed where i , λ and x represent current, flux linkage, and position, respectively.Energy that is stored in the magnetic field has two possible sources – the electrical system or the mechanical system. The energy entering the stored field from the electrical system.
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how are chemical and physical weathering different?
Answer: Physical weathering is when a rock is broken through the force of another physical substance on the rock like ice, running water, or wind. On the other hand, chemical weathering is when a reaction occurs between the rock and another substance that causes the rock to dissolve (chemical reaction), which changes the identity of the rock.
Explanation:
Physical = breakdown of rocks and minerals
Chemical = chemical breakdown of rocks
Write 0.00034 in scientific notation.
Answer: 3.4 x 10^-4
Explanation: the number of decimal places you move will be the exponent on the 10 . if the decimal is being moved to the right, the exponent will be negative . if the decimal is being moved to the left, the exponent will be positive
=
3.4 x [tex]10^{-4}[/tex]
Why is potential energy highest at the top?
A doubling in height will lead to a doubling in gravitational potential energy since an object's gravitational potential energy is exactly proportionate to its height above the zero point.
Potential energy is a form of stored energy that is dependent on the relationship between different system components. When a spring is squeezed or extended, its potential energy increases. a boulder perched precariously atop a cliff. The rock will be moving if it falls, converting the potential energy to kinetic energy. a longbow's stretched-elastic string. Any item that is raised from rest has energy that may be released at a later time; for this reason, it is referred to as potential energy. Potential energy is the energy that is stored in any item or system as a result of its location or component arrangement.
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A catcher stops a 92 mi/hr (41. 1 m/s) pitch in his glove, bringing it to rest in 0. 15m. If the force exerted by the catcher is 803 n, what is the mass of the ball?.
If a catcher stops a 92 mph (41. 1 m/s) pitch in his glove and slows it to rest in 0. 15 m with a force of 803 N, the ball's mass is 0.14 kg.
What is the short form of Newton's second law?According to Newton's Second Law of Motion, when a force acts on a mass, acceleration (or gaining speed) occurs (object). A good illustration of this law of motion in action is when you are riding a bicycle. The mass is represented by your bicycle. The force is generated by your leg muscles as they push against the bicycle pedals.
a = (Vf²- Vi²)/2.d
The distance is 0.15 meters, the initial velocity is 92 miles per hour, or 41 m/s, and the final velocity is 0 (rest).
a= -5603 m/s²
use the second Newton law,
F= m.a
m= F/a
m= 803N/5603 m/s²
m= 0.14kg.
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A baseball is traveling ( 20 m/s) and is hit by a bat. it leaves the bat traveling (−30 m/s). what is the change in the velocity? remember that direction is what makes velocity different than speed. responses −10 m/s negative 10 meters per second , −20 m/s negative 20 meters per second , −30 m/s negative 30 meters per second , −50 m/s
-50 m/sec is the change in the velocity. Correct option is: d
What is velocity?A particle or object moves with respect to time while moving at a certain speed, which is expressed vectorially as velocity. The metre per second (m/s) is the accepted unit of velocity magnitude (also known as speed). Alternately, the amount of velocity can be expressed in centimetres per second (cm/s).
Speed is denoted by the letter v (italic), whereas velocity is denoted by the letter V (boldface). A bar is added above the symbol for average values as well.
A vector quantity called velocity (v) measures displacement over time (Δt), or the change in position (Δs).
Given that,
A baseball is traveling ( 20 m/s) and is hit by a bat
it leaves the bat traveling (−30 m/s).
Now calculate the change in velocity:
Δv = v₂ - v₁
or, Δv = (-30) - 20
or, Δv = - 50 m/sec
It acts on the negative direction.
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In each of the scenarios below, two spheres of the same size and shape hang from a common attachment point. Each sphere is electrically charged and is either perfectly conductive or perfectly insulating, as indicated in the key below. The magnitude of charge Q is greater than the magnitude of charge q. Each pair of spheres is allowed to swing freely and comes to rest in some equilibrium position. In each scenario, determine whether the spheres come to rest in contact, or separated by some distance. Assume that the weight of the spheres is small enough that electrostatic forces are significant.
The equilibrium position of the spheres depends on their conductivity; if both spheres are conductive, they will come to rest in contact, if one sphere is conductive and the other is insulating, they will come to rest separated by some distance.
Perfectly conductive spheres: Since both spheres are conductive, they will both be at the same electrical potential. Therefore, there will be no electrostatic force between them and they will come to rest in contact with each other.
One perfectly conductive sphere and one perfectly insulating sphere: The conductive sphere will distribute its charge evenly over its surface, whereas the insulating sphere will retain its charge on its surface.
This will create an electrostatic force between the two spheres, which will cause them to repel each other and come to rest separated by some distance.
Both perfectly insulating spheres: Both spheres will retain their charge on their surfaces, creating an electrostatic force between them.
The sphere with the greater charge will exert a stronger force on the other sphere and they will come to rest separated by some distance, with the sphere of greater charge closer to the common attachment point.
In conclusion, the equilibrium position of the spheres depends on their conductivity. If both spheres are conductive, they will come to rest in contact.
If one sphere is conductive and the other is insulating, it will come to rest separated by some distance due to the repulsion force. If both spheres are insulating, the sphere with greater charge will exert a stronger force and come to rest closer to the common attachment point.
Due to the repulsion force and if both spheres are insulating, the sphere with greater charge will exert a stronger force and come to rest closer to the common attachment point.
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a ? is defined as the circuit conductors between the final overcurrent device protecting the circuit and the outlet(s).
A branch circuit is the conductors between the final overcurrent device and the outlets, providing power to lights and outlets in a building and are typically rated for 15 or 20 amps.
A branch circuit is defined as the circuit conductors between the final overcurrent device protecting the circuit and the outlet(s). Branch circuits provide power to lights and outlets in a building and are typically rated for 15 or 20 amps. The final overcurrent device, such as a circuit breaker or fuse, is used to protect the branch circuit from overloads and short circuits. The National Electric Code (NEC) provides guidelines for the safe installation of branch circuits, including rules for conductor sizing, overcurrent protection, and grounding. Properly installed and maintained branch circuits are essential for ensuring the safe operation of electrical systems in a building.
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a lithium nucleus consisting of 3 protons and 4 neutrons accelerates to the right due to electric forces, and the initial magnitude of the acceleration is
The direction of the electric fields will be outwards or away from the the carbon nucle.
Define initial magnitude of the acceleration ?
Acceleration (a) is the change in velocity (Δv) over the change in time (Δt), represented by the equation a = Δv/Δt.Initial acceleration of a particle moving in a straight line is do and initial velocity is zero. The acceleration reduces continuously to half in every to seconds.The unit for the magnitude of acceleration is meters per second squared. Because acceleration deals with velocity and time, it is important that the units reflect both variables. Velocity is a vector, meaning it has both magnitude and the direction of that magnitude.To calculate the magnitude of the velocity at any point in time, multiply the constant acceleration rate times the time difference and then add it to the initial velocity. As an example, if you dropped a rock off a cliff, its velocity increases by 32 feet per second, every second.To learn more about magnitude of the acceleration refers to;
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A person throws a rock straight up into the air. At the moment it leaves the person's hand it is going 80 mph. When the rock reaches its peak, how fast is it going and what is the magnitude and direction of its acceleration? Ignore air drag. Express your answer using appropriate mks units.
a) The velocity at the peak is zero m/s
b) The direction of the acceleration of the motion is negative.
What is the acceleration?We should know that the acceleration would have to do with the change in the speed of a body and in the case of the question that we have here we are told that the object has been thrown straight up.
At the maximum height, the object would cease to move and as such the velocity of the object at at the peak of the motion would be seen to be zero. The acceleration in this case would be negative.
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when should a bimetal stemmed or digital thermometer be calibrated?
A bimetal stemmed or digital thermometer should be calibrated when a) It is new and you take it out from the box, b) If it is dropped on the floor, c) You reset the thermometer for a different temperature range.
A bimetal thermometer is made up of two metallic strips of different coefficient of thermal expansions. There expansion or contraction for the same temperature difference are different. This difference in the displacement in the length of the metallic strips is shown by indicator.
Calibration of a thermometer is the method of making sure that the thermometer is giving the correct reading. It is done by setting the temperature reading of the thermometer to the known temperature of any object.
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the hydraulic oil in a car lift has a density of . the weight of the input piston is negligible. the radii of the input piston and output plunger are and 0.125 m, respectively. what input force f is needed to support the 24 500-n combined weight of a car and the output plunger, when (a) the bottom surfaces of the piston and plunger are at the same level, and (b) the bottom surface of the output plunger is 1.30 m above that of the input piston?
First, we need to find the area of the input piston and output plunger. The area of a circle is given by the formula:
A = πr^2
Where:
A = area
r = radius
π= 3.14
The area of the input piston:
A = π(0.100 m)^2 = 0.0314 m^2
The area of the output plunger:
A = π(0.125 m)^2 = 0.0491 m^2
Now we can use the area of each piston and the density of the hydraulic oil to find the force needed to support the weight of the car and the output plunger. The force is given by the formula:
F = pghA
Where:
F = force
p = density of the hydraulic oil
g = acceleration due to gravity (9.8 m/s^2)
h = height of the fluid
A = area of the piston
(a) If the bottom surfaces of the piston and plunger are at the same level, h = 0 m, so the force needed is:
F = pghA = (0.9 × 9.8 × 0) x (0.0314 m^2) = 0 N
So no force is needed to support the weight of the car and the output plunger when the bottom surfaces are at the same level.
(b) If the bottom surface of the output plunger is 1.30 m above that of the input piston, the force needed is:
F = pghA = (0.9 × 9.8 × 1.3) x (0.0314 m^2) = 39.42 N
So a force of 39.42 N is needed to support the weight of the car and the output plunger when the bottom surface of the output plunger is 1.30 m above that of the input piston.
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what is the next larger thickness that would produce constructive interference for this wavelength? g. what are the shortest 2 wavelengths that destructively interfere for the bubble thickness from part e?
The next larger thickness that would produce constructive interference for this wavelength would be 2t , where t is the thickness of the material.
The two shortest wavelengths that would destructively interfere for the bubble thickness from part e would be 2λ and 4λ, where λ is the wavelength of the incident light.
Constructive interference occurs when two waves from the same source overlap and their amplitudes add together. When the thickness of a material is equal to a half-wavelength of the incident light, the two reflected waves will have the same amplitude and opposite phase, resulting in complete cancellation.
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in a right-angled triangle, the forces of the perpendicular sides are 6n and 11n. find the resultant force
HURRY PLS!!! Compare and contrast the continental shelf and the abyssal plain.
Answer:
The continental shelf is a shallow, near horizontal seafloor extension from the shoreline to the upper continental slope. This shelf forms the shallow margin of each deep-ocean basin. ... At the base of this steep slope is the continental rise which finally merges into the deep ocean floor, the abyssal plain.
Explanation:
I took the test…
Which behavior of light makes it possible for you to see a spectrum of colors in a spray of water on a sunny day? a. diffusion b. reflection c. refraction d. dispersion
Refraction is the property of light that allows you to see a variety of colors in a spray of water on a sunny day.
Because a medium's refractive index depends on wavelength, light of various wavelengths is refracted at various angles, resulting in the splitting of the light beam into various colors.
Light waves are bent at different angles because they are slowed down at varying rates. For instance, the wavelengths of the rainbow are created when the entire visible light spectrum passes through the glass of a prism.
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An object with mass m is suspended at rest from a spring with a spring constant of 576 N/m.
The length of the spring is 15. 6 cm longer than its unstretched length L when an object is
added. A person then exerts a force on the object and stretches the spring an additional 17. 9
cm. What is the total energy stored in the spring at the new stretched length?
The total potential energy stored in the spring at the new stretched length 31.36 J.
Potential energy in physics is the energy that an item retains as a result of its position in relation to other objects, internal tensions, electric charge, or other elements.
The elastic potential energy stored in a spring is given by:
U = 1/2 kx²
where
k is the spring constant
x is the stretching/compression of the spring with respect to the unstretched length
For the spring in this problem, we have:
k = 576 N/m is its spring constant
The spring is stretched by 15.6 cm first and then by an additional 17.9 cm, so the total stretching is
x = 15.6cm + 17.9 cm = 33.5cm = 0.335m
Therefore, the elastic potential energy in the spring is:
U = 1/2 (576) (0.335)² = 31.36 J
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a ship is moving at a speed of 15 km/h parallel to a straight shoreline. the ship is 9 km from shore, and it passes a lighthouse at noon. (a) express the distance s (in km) between the lighthouse and the ship as a function of d, the distance the ship has traveled since noon; that is, find f so that s
a.The expression for the distance between the lighthouse and the ship is f(d)=√(d²+81).
b.The expression for time elapsed since noon is g(t)=15×t.
c.The expression for f(g(t))=√(225t²+81)
The rate at which a particular object changes its position in a specific period of time is known as speed. It is a scalar quantity and depends on the distance and time taken.
a. The speed of the ship is, S=15 km/h, Distance of the ship from the shore is,a=9km.
So, the distance between the lighthouse and the ship, s=√(d²+a²), f(d)=√(d²+9²), f(d)=√(d²+81).
b. Time elapsed since noon, d=s×t =15×t. g(t)=15×t.
c. fog expression, f(g(t))=f(d) , f(15t)= √( d²+81) =√[(15t)²+81] =√(225t²+81).
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a skydiver jumps out of an airplane. what is her terminal velocity in miles per hour (mph), assuming that for free-fall (no parachute)? terminal velocity
The skydiver is falling at a velocity of 212 kilometres per hour. The speed of the skydiver is 212 miles per hour.
If a skydiver leaps out of a plane and lands at 212 mph, it is necessary to know the skydiver's velocity and speed. Velocity is speed with a direction, whereas speed just exists as a number with a speed unit at the end. While velocity refers to both the speed and direction of an object's motion, speed is the rate at which an object moves along a path over time. The skydiver is falling at a speed of 212 kilometres per hour. 212 kilometres per hour is the speed at which the skydiver is travelling. Speed is the rate at which an object travels along a path over time, as opposed to velocity, which describes the speed and direction of an object's motion. A scalar quantity is speed.
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