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You reach out the second story window, which is 5 meter above the sidewalk, and throw a 0.3 kilogram ball straight upward with 6 Joule of kinetic energy.
(a) Find the ball gravitational potential energy when it is released?
__________J
(b) Find the ball gravitational potential energy just before hitting the sidewalk?
(c) Find the ball kinetic energy just before hitting the sidewalk?
_________J
A concave mirror forms a real image twice as large as the object. The object is then moved such that the new real image produced is three times the size of the object. If the image was moved 62.5 cm from its initial position, how far was the objec..
White light containing wavelengths from 400 nm to 750 nm falls on a grating with 7000 lines/cm. How wide is the first-order spectrum on a screen 2.10 m away.
The National Transportation Safety Board is testing the crashworthiness of a new car. Find the magnitude of average force that acts on car during the impact
one end of a unifrom meter stick of mass 0.25kg is placed against a vertical wall. The other end is held by a lightweight cord making an angle ? =20 degree with the stick, find the frictional force between the stick and the wall
A terrestrial telescope uses an objective and eyepiece with focal lengths of 42cm and 6.0cm, respectively. find the magnification of the telescope for an object at infinity
The electric potential at x = 5.0 m is 190 V, and The electric potential at x = 3.0 m is 120 V. What is the electric field in this region, assuming it's constant?
a skydiver of mass 80 kg jumps from a slow-moving airplane and reaches a terminal speed of 50 ms. what is the
A solid cylinder of radius .35m is released from rest from aheight of 1.8m and rolls down the incline without slipping as shown.What is the center of mass velocity at the bottom of the incline
A magnetic field is oriented at an angle 42 degrees to the normal of a rectangular aread 5.5 cm by 6.8 cm. evaluate the strength of the magnetic field
A tennis ball rolls off the edge of a tabletop 0.850 above the floor and strikes the floor at a point 1.60 horizontally from the edge of the table. Find the time of flight of the ball.
To push a piece of heavy furniture across the carpet usually takesmore force to get it moving than it takes to keep it moving, this is because:
A projectile is launched at some speed at an angle of 74 degrees and travels a range of 262 meters. The launch angle is after that changed, but the projectile is fired at the same speed as the original case and also travels the same range of 272 m..
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