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A ?ghter plane ?ying at constant speed 420 m/s and constant altitude 10000 m makes a turn of curvature radius 2800 m. On the ground, the plane's pilot weighs (62 kg)(9.8 m/s2) = 607.6 N. W
A ball is thrown horizontally from a 16 -high building with a speed of 9.0. How far from the base of the building does the ball hit the ground
a box of textbooks at an unknown mass is set in motion with the intial speed of 0.5 m/s on a loading ramp that makes and angle of 16 degrees with the horizontal. find the normal force on the box
Two point particles of charge Q1 = 43 µC and Q2 = 89 µC are found to have a potential energy of 38 J. What is the distance between the charges
Jack and Jill are standing on a crate at rest on the frictionless, horizontal surface of a frozen pond. Jack has a mass of 74.5kg , What is the final speed of the crate if Jill jumps first and then Jack, again in the same direction
A -10.5 nC point charge and a + 21 nC point charge are 16.5 cm apart on the x- axis. where the electric potential is zero
A flea jumps straight up to a maximum height of 0.470 m. What is its initial velocity v_0 as it leaves the ground.
A 251 kg wooden raft floats on a lake. When a 70kg man stands on the raft, it sinks 4cm deeper into the water. When he steps off, the raft vibrates for a while.
fired horizontally at a speed of 550, goes completely through the block, emerging at a speed of 180 . Illustrate what is the speed of the block immediately after the bullet exits?
a carpenter has been asked to build an open box with a square base. the sides of the box will cost 4 per square meter
A 100-W resistance heater is connected to a 110-V doc source. What current flows through the heater
A small object with a mass of 380 mg carries a charge of 35.0 nC and is suspended by a thread between the vertical plates of a parallel-plate capacitor. The plates are separated by 5.00 cm. If the thread makes an angle of 12.0° with the vertical, ..
One mole of an ideal gas does 2500 J of work on its surroundings as it expands isothermally to a final pressure of 1.00 atm and volume of 28.0 L. Determine the temperature of the gas
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