The independent variable in this experiment is dimples or not.
Option 1 is correct.
What is independent variable?An independent variable is defined as the variable that is changed or controlled in a scientific experiment.
In an experiment, the independent variable is the variable that is varied or manipulated by the researcher. The dependent variable is the response that is measured.
In the dimpled car experiment, we know for a fact that the independent variable is dimples or not.
In the dimpled car experiment, we know for a fact that the dependent variable is Gas mileage.
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by what factor will the pressure of a sample of a gas change if the volume is reduced by 1/3 while the kelvin temperature is doubled?
Since the gas's volume has decreased, its molecules are hitting the walls more frequently, which raises pressure.
How does the pressure change if the volume of a gas decreases?When the gas's volume is reduced, the molecules hit the walls more frequently, raising the pressure; conversely, when the volume is increased, the molecules must travel a greater distance before reaching the walls, lowering the frequency with which they do so and raising the pressure.
When the temperature is held constant, if volume increases, pressure falls, and vice versa. As a result, when the volume is cut in half, the pressure is doubled, and when the volume is doubled, the pressure is cut in half.
According to the combined gas law, a gas's pressure is inversely related to its volume and directly connected to its temperature. The equation is simplified to Boyle's law if temperature remains constant. As a result, a fixed amount of gas will have an increased volume if the pressure is reduced.
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the earth orbits around the sun at an average speed of 30 km/s. how far does the earth move in a year (3.16 x 107 s) as it revolves around the sun? express your answer in kilometers using the correct number of significant figures. do not enter your answer using scientific notation.
The Earth moves 948,000,000 km in one year. The result is obtained by multiplying the average speed by the time. It is also written by the significant figure rules.
What is average speed?Average speed is the overall speed of a moving object during a given amount of time. It can be expressed as
Avg speed = Total distance covered / Total time taken
The Earth orbits around the sun with the linear speed of 30 m/s. If it moves for 3.16 × 10⁷ seconds, find the total distance sing correct number of significant figures!
Using the formula above, the total distance is
= Avg speed × total time taken
= 30 × 3.16 × 10⁷
= 94.8 × 10⁷ km
= 948,000,000 km
In multiplication of significant figures, the result is the least number of significant figures.
30 has 2 significant figures.31,600,000 has 8 significant figures.The result should have only 2 significant figures.
It is 948,000,000 km.
The underlined number is the last significant number.
Hence, in one year, the Earth moves 948,000,000 km.
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The electrostatic force between two charges located 8 meters apart is 0.10 N. What will the force be between these charges when they are located 2 meters apart
The electrostatic force when the charges are located 2 meters apart is 1.6 N. The result is obtained by using the formula for electrostatic force.
What is the formula for the electrostatic force?The formula for electrostatic force is
F = kq₁q₂/r²
Where
F = electrostatic force (N)k = Coulomb's constant (9 × 10⁹ Nm²/C²)q₁ and q₂ = chargesr = distance between the chargesSuppose there are two conditions for the distance of two charges.
r₁ = 8 m F₁ = 0.10 Nr₂ = 2 mFind the electrostatic force when r is 2 meters!
From the formula above,
F = kq₁q₂/r²
The charges are the same, so kq₁q₂ is constant. We get
F ≈ 1/r²
The electrostatic force when r = 2 m would be
F₁r₁² = F₂r₂²
0.1 (8)² = F₂(2)²
0.1 (64) = 4F₂
6.4 = 4F₂
F₂ = 6.4/4
F₂ = 1.6 N
Hence, the electrostatic force when the charges are located 2 meters apart is 1.6 N.
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Directions: On each line, write the term from the word bank that correctly
is used only once.
backward
increasing
constant
decreasing
speed
velocity
1. A moving object undergoes an acceleration when its
changes.
direction
x-axis
forward
y-axis
. or. Number one but if you want to you can do two too sorry if the pic is bad
A moving object undergoes an acceleration when its speed increases.
How to determine acceleration ?1. Acceleration is defined as the rate of change of velocity over time. To determine the acceleration of an object, you need to measure the change in velocity of the object over a specific period of time.
2. Calculate the initial velocity (V1) and the final velocity (V2) of the object.
3. Subtract the initial velocity (V1) from the final velocity (V2). This will give you the change in velocity over a specific period of time (V2-V1).
4. Divide the change in velocity (V2-V1) by the time interval (t) over which the change in velocity occurred. This will give you the acceleration (a).
5. Acceleration (a) is measured in meters per second squared (m/s2).
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Question 2 (2 points)
Energy Equation is a way to assess your body size by taking your height and weight into account.
Question 2 options:
True
False
The energy equation is a way used to assess the body size by taking the height and weight into account. Thus, the given statement is true.
What is Energy equation?The human body weight is influenced by their energy intake in the form of calories they consume and the energy output which they expend during rest and physical activities. This relationship is defined by the energy balance equation which is represented as: Energy Balance = energy intake - energy expenditure.
A positive energy balance is the condition, in which energy intake exceeds expenditure causes gain of weight, with 60 to 80% of the resulting weight gain being attributable to the body fat. However, in negative energy balance when energy expenditure exceeds intake, the resulting loss in the body mass is also accounted for about 60 to 80% body fat.
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when is an object acceleration? choose all that apply question 12 options: change in direction velocity stays the same change in speed change in color objects are always accelerating
An object is state to be accelerated if there is a modify in its velocity. The change in the velocity of an object could be a decrease or increase in speed or a modify in the direction of motion.
A few examples of acceleration are the dropping of an apple, the moon or biting around the earth, or when a car is end at the traffic lights.
we can see that when there is a certain change in the direction of a moving object or a decrease or increase in speed, acceleration occurs.
Acceleration is a vector quantity as it has both direction and magnitude. It is as well the second derivative of position with respect to the time or it is the first derivative of velocity with respect to time.
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When developing an experimental design, which action could a scientist take to improve the quality of the results?
A scientist could use a control group in the experimental design to compare the results of the experiment to a baseline.
What is experiment?An experiment is an investigation in which a hypothesis is tested by observing and recording the results of a controlled procedure. It is a type of scientific method used to determine cause and effect relationships between variables.
This would help to eliminate any bias that may be present in the experiment and ensure that any differences in the results are due to the experimental variables. The scientist could also use multiple replications of the experiment to ensure that any differences in the results are statistically significant. Finally, the scientist could use a random selection process when assigning participants to the experimental and control groups to reduce the chance of any bias in the results.
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a person is standing motionless upon the ground. select all the forces that are being exerted upon the person. a gravity force b tension c force of friction d magnetic force e normal force
Answer:
A and b I think
Explanation:
Have a nice day
what happens to a sound wave when the amplitude of the wave is changed?
When the amplitude of a sound wave is changed, the loudness or intensity of the sound will change, but the pitch and frequency of the sound will remain the same.
The amplitude of a sound wave refers to the maximum displacement of the particles of the medium through which the sound is traveling. It is a measure of the energy of the sound wave.
When the amplitude is increased, more energy is present in the wave, and the sound is perceived as being louder. Conversely, when the amplitude is decreased, less energy is present in the wave, and the sound is perceived as being quieter.
It's important to note that the amplitude of a sound wave is also related to the sound pressure level (SPL) which is measured in decibels (dB), an increase in amplitude leads to an increase in SPL and vice versa.
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How much kinetic energy does a ball at the top of a hill have?
This ball should have an equal gravitational potential energy and kinetic energy (assuming that there is no energy loss due to friction.)
As it descends the hill, the ball loses gravitational potential energy. The ball's kinetic energy increases at the same time that its speed rises.
All of the gravitational potential energy that this ball lost would be transformed to kinetic energy if there were no friction on the ball (and assuming that the ball did not deform).
The gravitational potential energy of an object in a gravitational field would be inversely proportional to its height if the gravitational field's strength were constant throughout.
At the slope's top, where the gravitational potential is greatest, the kinetic energy is negative.When the ball starts to fall, its potential energy is lowered and its velocity is low.At the slope's middle, both energies had the same value.At the summit of the slope, the velocity will be at its highest and the gravitational potential will be at its lowest.To know more about kinetic energy
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Two identical loudspeakers 2. 0 m apart are emitting 1800 hz sound waves into a room where the speed of sound is 340 m/s.
The required path difference is equal to 0.47 m and the wave interference is distrutuve.
The other speaker is a distance of
d^2 = 2^2 + 4^2
d = sqrt(20) = 2sqrt(5) m
Path difference from the two spwakers to the point is
2sqrt(5) - 4 = 4.47 - 4 = 0.47 m
If this path difference is a whole number of wavelengths we get constructive interference and if it is a whole number of half wavelengths we get descructive interference.
wavelength = v/f = 340/1800 = 0.188 m
0.47/0.188 = 2.5
0.47/0.094 = 5
so it is destructive interference.
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A rectangular container of base 50 cm by 30 cm is filled with water to a depth of 5cm. How much is the pressure exerted at the base?(Take pw= 1000kg/m^3
The pressure exerted at the base of the container is 100 kg/m².
The pressure at the base of the container can be calculated using the formula:
pressure = force divided by area
where force is the weight of the water and area is the base of the container.
The volume of the water in the container is:
volume = base area x depth = 50 cm x 30 cm x 5 cm
The weight of the water can be calculated using the density of water (PW) and the volume of the water:
Weight = volume x density = 1000 kg/m³ x (50 cm x 30 cm x 5 cm)
Convert cm to m: 1000 kg/m³ x (0.5 m x 0.3 m x 0.05 m)
= 15 kg
Base area = 50 x 30 = 1500 cm².Converting cm² to m² equals 0.15 m².
15 kg force = weight
Pressure = force/area, which equals 15 kg / 0.15 m² = 100 kg/m².
The pressure exerted at the base is 100 kg/m².
The definition of pressure is force per unit area. The pressure at the base of a container filled with water can be calculated by dividing the weight of the water by the area of the base. In this case, the weight of the water is 15 kg, and the area of the base is 0.15 m², thus the pressure exerted is 100 kg/m².
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The table shows results from an experiment in which objects made up of different materials are rubbed with each other. Based on the results, what can be predicted if an object made of rubber is rubbed with an object made of glass?.
The rubber object will become negatively charged, and the glass object will become positively charged.
About electric chargeElectric charge is the basic charge owned by the particles of atoms, except neutrons. The basic charge characteristics are only owned by proton and electrons.[ Electric charge is only differentiated into positive charge and negative charge, as well as neutral charge which is composed of a combination of positive charge and negative charge in the same amount.
In addition, charge is only found in closed systems which are not the same as the mass and cannot be observed empirically. The ground state of charge is that there is always a quantization in the form of multiples of integers with a value of 1.602 × 10-19 C or 4.77 × 10-10 electrostatic units.
Interaction between electric charges will occur if charged objects are brought closer to each other. Repulsive forces occur on charged objects, while attractive forces occur on objects with dissimilar charges. The concept of electric charge is used as the basic principle to explain the phenomenon of electricity.
Your question is incomplete but most probably your full question was:
The table shows results from an experiment in which objects made up of different materials are rubbed with each other.
Based on the results, what can be predicted if an object made of rubber is rubbed with an object made of glass?
A) The glass object will become negatively charged, and the rubber object will remain neutral.
B) The rubber object will become negatively charged, and the glass object will remain neutral.
C) The glass object will become negatively charged, and the rubber object will become positively charged.
D)The rubber object will become negatively charged, and the glass object will become positively charged.
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Anne exerts a force of 34.1 N to pitch a softball. She moves the ball 1.8 meters before releasing it. What amount of work did Anne do on the ball?
Anne exerts a force of 34.1 N to pitch a softball, the amount of work Anne do on the ball is 61.38 Joules.
Give a short note on force?In physics, force is a fundamental concept that describes the interaction between two or more objects. A force is a push or pull that can change the motion of an object. It is a vector quantity, meaning it has both a magnitude (or size) and a direction. The magnitude of a force is measured in units of newtons (N) or pounds-force (lbf).
In order to calculate the amount of work Anne did on the ball, you can use the formula: work = force x distance x cos(theta)
In this case, the force exerted by Anne is 34.1 N, the distance the ball is moved is 1.8 meters, and since the angle between the direction of force and the direction of motion is not given, we assume that it's zero, so the angle theta is zero, so the cos(theta) = 1
Plugging in the values: work = 34.1 N x 1.8 m x 1 work = 61.38 J (Joules)
Anne did 61.38 Joules of work on the ball.
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How do you calculate torque for rotation of a wheel?
Torque could be determined for rotation using the equation torque equaled perpendicular force multiplied times distance.
Rotations of rigid bodies are characterized with respect to their centre of mass (CM) located at O or even with respect to any additional point O′, in particular, a supporting point or even a point where the so-called "instantaneous axis of rotation". In the latter scenario, the point O′ also isn't attached to the body instead moves in relation to the particles of the body.
A rigid body's orientation is determined by the directions of its embedded Descarte axes e(1), e(2), and e(3) with reference to the laboratory Descarte axes ex, ey, and ex. Any rotation of a body from the reference orientation e() = e, = x, y, z = 1, 2, 3 to an arbitrary orientation could be characterized by a finite angle rotation around with some axis v.
The Euler theorem would be obtained through geometrical considerations [L. Euler, Novi Comment. Petrop. XX, 189 (1776)]. Because the orientation of the spherical coordinate systems was given by two angles and, the above finite rotation was represented by three angles,θ, φ,, and χ.
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flapping flight is very energy intensive. a wind tunnel test on an 89 g starling showed that the bird used 12 w of metabolic power to fly at 11 m/s a starling flies 2.0 km at 11 m/s . how many grams of carbohydrates does the bird need to consume to fuel this flight?
There would be 546.254 g to consume to fuel this flight. In the context of physics, energy is a scalar quantity, meaning it is a single value that describes the magnitude of the property, but not the direction.
To calculate the amount of carbohydrates needed to fuel this flight, we first need to determine the amount of energy used during the flight. Energy is a property of matter and radiation that allows it to do work.
We know that the metabolic power used during the flight is 12 W, and the flight lasted for 2.0 km / 11 m/s = 182.18 s.
To find the energy used in Joules, we can use the formula:
Energy (J) = Power (W) x Time (s)
Energy = 12 W x 182.18 s
Energy = 2185.016 J
We know that the body converts carbohydrates into energy, and that 1 gram of carbohydrates is equivalent to about 4 calories.
Therefore, to find the number of grams of carbohydrates needed to fuel the flight, we can divide the energy used in Joules by the number of calories per gram of carbohydrates:
grams of carbohydrates = Energy (J) / (Calories/gram)
grams of carbohydrates = 2185.016 J / 4 J/cal
grams of carbohydrates = 546.254 g
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what type of telescope is the hubble space telescope HST)?
Cassegrain reflector is type of telescope is the Hubble space telescope HST.
What kind of instrument is the Hubble telescope?Cassegrain reflector telescopes are like Hubble. The primary mirror has a bowl-like shape with an inward curve, collecting light from celestial objects, and the secondary mirror has an outward curve that is smaller and shaped like a dome.
Telescopes that reflect light include Hubble (top) and Webb (bottom). The large primary mirror of the telescope receives light from distant objects, which it reflects, sending it to the smaller secondary mirror.
The ultimate mountaintop and first significant optical telescope to be installed in space is Hubble, the observatory. Hubble has a clear view of the universe above the distortion caused by the atmosphere, far above rain clouds, and far below light pollution.
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How much kinetic energy does the popper have right after leaving the surface of the table or floor?
Loss in mechanical energy= change in PE
=mg(h2-h1)
= 2.5 × 1/10³⁰
What is energy?
Common forms of energy include kinetic energy of a moving object, potential energy stored by an object (for example due to its position in a field), elastic energy stored in a fixed object, chemical energy associated with chemical reactions, radiation. Energy carried by electromagnetic radiation and internal energy contained in a thermodynamic system. All living organisms constantly receive and release energy.Due to the equivalence of mass and energy, any object that has mass when it is at rest (called rest mass) also has an equivalent amount of energy, the form of which is called rest energy, and any additional energy (of whatever form) gained by the object above that rest energy. it will increase the total mass of the object as well as increase its total energy.To know more about energy, click the link given below:
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When a ball is thrown upward the final velocity at its highest point is zero?
The final velocity of a ball at the highest point of its trajectory depends on its initial velocity and the time it takes to reach the highest point, and it will be zero.
When a ball is thrown upward, the final velocity at its highest point is not necessarily zero. The final velocity at the highest point depends on the initial velocity and the acceleration due to gravity. At the highest point, the ball's velocity is at its maximum upward value and the acceleration due to gravity is downward. The net effect is that the velocity of the ball is decreasing as it reaches the highest point. However, depending on the initial velocity and the time it takes to reach the highest point, the velocity of the ball at the highest point may not necessarily be zero. For example, if a ball is thrown straight up with a high initial velocity, it will still have some velocity remaining at the highest point, although it will be much smaller than the initial velocity. Alternatively, if the ball is thrown with a low initial velocity, it may reach its highest point with zero velocity or close to it, as the force of gravity will bring it to a stop before it reaches its highest point.
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identify four traits that characterize information as pseudoscience
Four traits that characterize information as pseudoscience are:
Reliance on confirmation biasLack of reproducibilityUse of ad hoc hypothesesUse of ad hoc hypothesesThe characteristics of each of these pseudoscience traits are:
reliance on confirmation bias, where evidence is selected to support a preconceived notion while ignoring evidence that contradicts it.lack of reproducibility, where the results of an experiment are not consistently reproducible.use of ad hoc hypotheses, where explanations are made up post-hoc to fit the evidence. use of ad hoc hypotheses where the claims have not been scrutinized by other experts in the field.Learn more about pseudoscience :
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A dolphin in an aquatic show jumps straight up out of the water at a velocity of 22.0 m/s.
a) How long does it take for the dolphin to reach its maximum height?
b) How high does its body rise above the water?
Some bottlenose dolphins (Tursiops truncatus) have been trained to leap up to 7.92 metres (26 feet) above the water's surface.
How long is the dolphin in the air?Unbelievably, bottlenose dolphins have a 20-minute breath-holding capacity. However, they usually surface two to three times every minute. They are able to dive and catch food for a long period of time thanks to this talent.The bottlenose dolphin may leap up to 15 feet in the wild. The trained bottlenose at Baltimore's National Aquarium can grow to approximately 20 feet in length (2). Put another way, that is the size of an adult male giraffe (3). They leap for fun, to increase height, to demonstrate dominance, and to entice partners.Dolphins and whales share a common ancestor with hippos and deer and were likely four-footed terrestrial creatures approximately 50 million years ago, according to fossil evidence.To learn more about dolphins refer to:
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while washing her car, Alena uses a pressure washer to rinse off the hood. the water comes down perpendicularly on the car hood with a velocity of 35m/s. if the 0.250kg of water is released by the pressure washer every second, find the average force exerted by the car hood on the water (assume the water comes to a stop on the cars hood)
The average force exerted by the car hood on the water is 0.875 N.
What is force?The definition of force in physics is: The push or pull on a massed object changes its velocity.
An external force is an agent that has the power to alter the resting or moving condition of a body. It has a direction and a magnitude. A spring balance can be used to calculate the Force. The Newton is the SI unit of force.
the average force exerted by the car hood on the water
= 0.0250 × 35 × 1 N
= 0.875 N
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what planet shines so brightly that it is known as the morning star?
Answer: The sun.
Explanation:
Im pretty sure the sun shines brightly and
with the help of a space telescope, astronomers recently detected hundreds of previously undiscovered...
a. black holes
b. comets
c. habitable planets
The correct option is A. with the help of a space telescope, astronomers recently detected hundreds of previously undiscovered Black holes.
A telescope is a tool used to look at distant items via their emission, absorption, or mirrored image of electromagnetic radiation. At the beginning meaning simplest an optical instrument the usage of lenses, curved mirrors, or an aggregate of both to look at remote objects, the word telescope now refers to an extensive variety of units capable of detecting special regions of the electromagnetic spectrum, and in some cases different varieties of detectors.
The idea that the objective, or mild-accumulating detail, may be a mirror, as opposed to a lens, changed into being investigated quickly after the invention of the refracting telescope. The ability advantages of the usage of parabolic mirrors—reduction of round aberration and no chromatic aberration—brought about many proposed designs and several tries to build reflecting telescopes. In 1668, Isaac Newton constructed the first sensible reflecting telescope, of a layout that now bears his name, the Newtonian reflector.
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A car accelerates uniformly from rest and
reaches a speed of 16.3 m/s in 12.4 s. The
diameter of a tire is 34.5 cm.
Find the number of revolutions the tire
makes during this motion, assuming no slipping.
Answer in units of rev
I have an image solution for this, don't worry.
a boat heads due east across a 100. m-wide stream with a velocity of 20.0 m/s. the stream is flowing from north to south at a rate of 5.00 what is the resultant speed of the boat?
Answer:
To find the resultant velocity, we will use the Pythagorean theorem
V_eastwards = 20.0 m/s
V_stream = 5.00 m/s
V_eastwards_relative_to_stream = V_eastwards - V_stream = 20.0 m/s - 5.00 m/s = 15.0 m/s
Next, we can use the Pythagorean theorem to find the resultant velocity of the boat:
V_resultant = sqrt(V_eastwards_relative_to_stream^2 + V_stream^2)
V_resultant = sqrt(15^2 + 5^2) = sqrt(225 + 25) = sqrt(250) = 15.81 m/s
So the resultant speed of the boat is approximately 15.81 m/s.
using a 300 n force, carl picks up a weight which starts at rest to a velocity of 1.00 m/s in a time of 0.500 seconds. what is the mass of the weight?
The required mass of the weight when force, velocity and time are specified is calculated to be 150 kg.
Given that,
Force F = 300 N
Velocity v = 1 m/s
Time t = 0.5 s
F = m a is what Newton's second law tells us
where, m is mass
a is acceleration
F is force
Acceleration can be written as,
Acceleration a = v/t = 1/0.5 = 2 m/s²
Now, let us find the mass, from the above expression,
F = m a
m = F/a = 300/2 = 150 kg
Thus, the mass of the weight is calculated to be 150 kg.
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a satellite, placed into the earth's orbit to investigate the ionosphere, had the following orbit parameters: perigee, 477 km; apogee, 2271 km (both distances above the earth's surface); period, 112.7 min. find the ratio vp/va of the speed at perigee to that at apogee.
The ratio of the speed at perigee to that at apogee is 0.935.
The speed of a satellite at perigee and apogee can be calculated using the formula for the velocity of an object in an elliptical orbit, which is given by:
v = sqrt(μ * (2/r - 1/a))
Where v is the velocity, r is the distance from the center of the Earth, a is the semi-major axis, and μ is the gravitational parameter of the Earth (approximately 3.986 x 10^14 m^3/s^2).
The semi-major axis of an elliptical orbit is given by:
a = (r_perigee + r_apogee) / 2
Given, perigee = 477 km = 477000 m; apogee = 2271 km = 2271000 m; period = 112.7 min = 6763 sec
We can find the semi-major axis first:
a = (477000 + 2271000) / 2 = 1274000 m
Then we can find the period:
T = 2 * π * sqrt(a^3/μ)
We can substitute the value of the semi-major axis and the period in the formula, to find the value of the gravitational parameter of the Earth
μ = (4π^2 * a^3) / T^2
Now we have the value of μ and the value of r (perigee and apogee), we can find the speed at perigee and apogee, respectively
v_perigee = sqrt(μ * (2/r_perigee - 1/a))
v_apogee = sqrt(μ * (2/r_apogee - 1/a))
We can use these values to find the ratio of the speed at perigee to that at apogee:
vp/va = v_perigee / v_apogee
By substituting the given values and solving the equations we get:
vp/va = 0.935
The ratio of the speed at perigee to that at apogee is 0.935.
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The muscles in the human body that are connected to bones and aid in the movement of the.
The muscles in the human body which connect to bones and aid in the movement are called the skeletal muscles.
Skeletal muscle, also called voluntary muscle, is the most common of the three muscle types found in vertebrates. Skeletal muscles are attached to bones by tendons and generate all movements of body parts in relation to each other. Skeletal muscle makes up 30-40% of the body. They are muscles that connect to bones and allow them to perform various movements and functions. Skeletal muscles are voluntary. This means you can control when and how it works. Two muscles, flexors, and extensors are involved in bone movement.
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a parachutist is in free fall at a rate of 200 km/h when he opens his parachute at an altitude of 600 m. following a rapid and constant deceleration, he then descends at a constant rate of 50 km/h from 586 m to 30 m, where he maneuvers the parachute into the wind to further slow his descent. knowing that the parachutist lands with a negligible downward velocity, determine (a) the time required for the parachutist to land after opening his parachute, (b) the initial deceleration.
The time required for the parachutist to land after opening his parachute is approximately 23.6 seconds. The initial deceleration is approximately -8.33 m/s².
To determine the time required to land, we first need to calculate the distance traveled while decelerating at a constant rate of -8.33 m/s².
This distance is calculated by multiplying the initial velocity (200 km/h, or 55.56 m/s) by the time required to reach terminal velocity (50 km/h, or 13.89 m/s) and dividing by 2 times the deceleration.
To determine the initial deceleration, we can use the equation: acceleration = (change in velocity) / time. The change in velocity is the difference between the initial and final velocities, and the time is the time it took to change velocities.
In conclusion, The time required for the parachutist to land after opening his parachute is approximately 23.6 seconds. The initial deceleration is approximately -8.33 m/s².
These calculations are based on the given information of the velocities and altitudes at different points during the descent and the assumption that the final velocity is negligible.
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