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A tennis ball is dropped from a height of 190 cm above theground. It has a mass of .0572 kg. How can I figure out the speedof the ball just before it hits the ground, and the speed of the ball just before it leaves the ground, using the conservation of energy?
When a quarterback throws a quick pass, he pushes on the ball with constant horizontal force for 0.10 sec, while his hand moves forward 0.80 m. find the work done on the ball by the quarter back
Two tiny conducting spheres with a mass of 15gm each are hanging from non-conducting threads of length 70cm such that they are 4cm apart as shown to the left.
The displacement of a wave traveling in the positive x-direction is y(x, t) = (3.5 cm)cos(1.7x - 129t), where x is in m and t is in s. What is the frequency of this wave
A 33.0-mH inductor has a reactance of 2.10 k?. What is the new reactance of the capacitor
One of the processes observed among elementary particles is the decay of the pi meson, a particle with the rest energy of 139.57 MeV. It decays into a muon and a neutrino. Find the momentum of the muon after the decay
A wooden board that is 50 cm long, 20 cm long, and 4 cm thick is floating in water. Rocks are then carefully placed on the top face of the board until the top of the wood just slips below the water surface. The density of water is 1000 kg/m^3 and ..
A hunter is standing on flat ground between two verticalcliffs that are directly opposite of each other. He is closerto one cliff than the other. find the distance between the cliffs
Blue light (wavelength=460nm) is incident on a piece of potassium= 2.2eV. What is the maximum kinetic energy of the ejected photoelectrons
Two polaroid sheets are arranged so that their transmission axes are at 90 degrees to each other. What is the intensity of light leaving the final sheet
When a bow and arrow are cocked, a force is applied to the string to pull it back. Is the energy of the system increased? Explain
It's generally okay to ignore relativistic effects when a particle's speed is less than 1.0% of the speed of light, Find the accelerating potential difference that will bring electrons to that speed, starting from rest
A 1.08 µF capacitor is connected in series with a 2.18 µF capacitor. The 1.08 µF capacitor carries a charge of +11.1 µC on one plate, Find the equivalent capacitance of the two capacitors
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