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Two balls of the same mass areaccelerated by the different net forces such that one ball gains avelocity twice that of the other ball in the process. Is the workdone by the net force acting on the faster-moving ball twice thatdone on the slower-moving ball? Explain.
A ball is thrown horizontally from the top of a 85 m building and lands 140 m from the base of the building. What is the vertical component of the velocity just before the ball hits the ground in m/s
A 72.5 - kg skateboarder stands at the edge of a half pipewith a diameter of 5.46 m . he gently tips over the edge and ridesto the bottom where his speed is 6.94 m/s. he then kicks toincrease his speed to 8.53m/s as he starts to ride up the others..
Sound is detected when a sound wave causes the eardrum to vibrate. Typically, the diameter of the eardrum is about 8.4 mm in humans, What is the power delivered to your eardrum
A hollow, spherical shell with mass 1.90kg rolls without slipping down a slope angled at 40.0 degree. Part A Find the acceleration. Take the free fall acceleration to be g = 9.80m/s^2 Part B Find the friction force. Take the free fall acceleration to..
The diamagnetic susceptibility due to the ion cores in metallic copper is -0.20 times 10-6. Knowing that the density of Cu is 8.93 g/cm3 and atomic weight is 63.5, calculate the average ionic radius of Cu.
Two astronauts floating at rest with respect to their ship in space decide to play catch with a3-kg asteroid. What is Joe's speed right after his first catch
Consider an isolated metallic sphere of radius R and another isolated metallic sphere of radius 3R. If both spheres are at the same potential, what is the ratio of their potentials
A 6.0-kg block is at rest on a horizontal floor. If you push horizontally on the 6.0-kg block with a force of 24.0 N, it just starts to move. What is the coefficient of static friction
A 1.2 kg brick is held a distance of 2 m above a manhole and then dropped. What is the change in potential energy
A beam of unpolarized light (at wavelength 550 nm) is incident normally on the face of a sapphire (Al2O3) crystal which is 1 cm thick. The optic axis of the crystal is at an angle of 60 ? with respect to the normal to the incident face. At the..
A charged paint is spread in a very thin uniform layer over the surface of a plastic sphere of diameter 12.0 cm, find the electric field just inside the paint layer
A 60.5 -kg runner has a speed of 4.60 m/s at one instant during a long-distance event. what is the runner's kinetic energy at this instant
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