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A proton and an electron have the same kinetic energy upon entering a region of constant magnetic field. What is the ratio of the radii of their circular paths?
What is the angle of incidence in air of a light ray whose angle of refraction in glass is half the angle of incidence? Assume the refractive index of glass is 1.50
A tank of water 3.00m deep sits on a table 1.00 m tall. A hole is located 2.0m from the bottom of the tank. Water flows out of hole and strikes the ground. Where does it strike the ground.
Catapults date from thousands of years ago, and were used historically to launch everything from stones to horses. At what speed did the projectiles hit the wall
State Newton's three laws of Motion and What is the difference between elastic collision and inelastic collision
A projectile is launched with initial speed of 60 m/s at an angle of 30 degrees above horizontal. the projectile lands on hillside 4 seconds later. what is velocity at the highest point of trajectory
A hardworking ant must supply 0.00655 N to pull a small piece of fruit at constant velocity over a distance of 10.00 cm up a small hill to the entrance of the colony. calculate the work done by the ant by pulling the piece of fruit up the hill
A 25 kg child on a 2.0 m swing is released from rest when the swing supports make the angle of 30.0 degrees with the vertical.
When scuba diving, you must equalize the pressure inside your body with the water outside every few meters you dive downward or swim upwards in order to avoid serious health complications. Calculate how far underwater you must dive
You have a pulley 13.8 cm in diameter and with a mass of 2.1 kg. You get to wondering whether the pulley is uniform. What is the moment of inertia if the pulley is uniform
a loaded penguin sled weighing 90 n rests on a plane inclined at 20deg to the horizontal. between the sled and the
An object is placed directly between a large planet and a star. Find the distance from the planet for which the net gravitational force exerted by the planet and by the star on this object is zero. DATA: Mstar= 1.90E+30 kg, Mplanet= 6.90E+25 kg, Dpla..
estimate the electrical energy stored in the atmosphere if the earths electric field extends upward for 1700 m. and
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