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A 4.3 meter long plank with a weight of 164 Newton is place on a dock with 1.4 meter of its length extended over the water. The plank is uniform in density. A boy with a weight of 141 Newton is standing on the plank and moving out slowly from the edge of the dock. Find how far from the edge of the dock can the boy move until the plank is just on the verge of tipping?
A bullet of mass 0.002 kg moving at 421 m/s impacts a large fixed block of wood and travels 6.1 cm before coming to rest. find the force exerted by the wood on the bullet
a doubly charged helium atom whose mass is 6.6 10- 27 kg is accelerated by a voltage of 2400 v.what will be its radius
An electronic attachment for camera produces flash by usingenergy stored in 880&10-6 F of capacitor, Determine the value of resistance
A 5g lead bullet travelling with v=1200m/s embeds in the 1kg block of ice at (-1°C). How much water was produced during the melting
If it starts 4.70m from the lower edge of the roof, how fast will the toolbox be moving just as it reaches the edge of the roof if the kinetic friction force on it is 21.0N
a basketball player of height 1.8 m is standing 2.4 m in front of a convex spherical mirror of radius of curvature 4.0
the image behind a convex mirror radius of curvature 97.0 cm is located 36.0 cm from the mirror.a where is the object
A mass, m= 1.23kg is hanging from a string. The string is stretched 0.641m from its natural equlibrium position. If i lift the mass 0.36m and let it go, what will be its maximum velocity
If our sun/solar system was formed in a dense cluster (as opposed to a sparse cluster) where are the rest of the stars. Is it possible to find any of them? How can radioisotopes be used to determine we were blasted by a supernova billions of years ag..
A room is 20 ft, 2in. long and 12 ft, 5 in, wide, and the ceiling is 12 ft, 2.5 inches above the floor; what is the volume of the room in cubic feet
Marsha is pushing down and to the right on a 21-kg box at an angle of 30 below horizontal. The box slides at constant velocity across a carpet whose coefficient of kinetic friction with the box is 0.70.
A tennis player hits a 1.45 kg tennis ball with a racket of mass 2.5 kg. If he hits the ball with a velocity of 7.5 m/s and then stops, what impulse did he imply on the ball
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