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It takes 2.60 s for a small ball with a mass of 0.030 kg released from rest from a tall building to reach the ground. Calculate the height from which the ball is released.
If that ball had been released from the same height, but this time above the surface of the moon, how long would it have taken for the ball to hit the ground?
A sports car moving at constant speed travels 90 m in 4.9s. If it then brakes and comes to a stop in 4s, what is its acceleration? Express the answer in terms of g's, where g = 9.80 m/s2. (Take the positive direction to be direction of travel.)
How much work is needed to move it at constant speed.
A closed Gaussian cylinder sits centered around the z-axis and above the xy-plane with a length of A and a radius of R, What is the net charge contained in the cylinder
When operated on a household 110-V line, typical hair dryers draw about 1650 W of power. What is the resistance of the dryer
Imagine that we add 250 J of thermal energy to 1 liter (L)(1000cm^3) of air initially at room temperature and normal pressure. By how much does its pressure increase
The alpha line in the Balmer series of the hydrogen spectrum consists of light having a wavelength of 6.56 ×10-7 meter. Compute the frequency of this light.
Elements in the sixth representative group tend to (lose one, lose two, gain one, gain two) when they participate in the ionic bonding
at what rate is the passenger train approaching the freight train.
The driver of a car wishes to pass a truck that is travelling at a constant speed of 20 meters per second. Initially, the car is also travelling at 20 meters per second and its front bumper is 24 meters behind truck's rear bumper.
Calculate the wavelength of light in vacuum that has a frequency of 6.1 105 Hz. Calculate the energy of one photon of such light in vacuum
A 63 kg girl weighs herself by standing on a scale in an elevator. What is the force exerted by the scale while the elevator is descending at a constant speed of 10.0 m/s.
and how would we improve this product? what would we change? how ould that impact the final product performance and
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