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Q. A shoe store uses small floor-level mirrors to let customers view prospective purchases. At what angle from vertical should such a mirror be inclined so that a person standing 59 from the mirror with eyes 142 off the floor can see her feet?
Q. An 9.0 kg mass, m(sub)1, on a frictionless table is accelerated by a 3.0-kg mass, m(sub)2, hanging over the edge of the table. What is the acceleration of the mass along the table?
A rifle fires a 2.39 10-2-kg pellet straight upward, since the pellet rests on a compressed spring that is released when the trigger is pulled. The spring has a negligible mass and is compressed by 9.17 10-2 m from its unstrained length. The pellet r..
What is the distance between town and johns present location
Find out an effective coefficient of kinetic friction
An airplane has a mass of 20,000 kg and takes off under the control of a constant net force of 30,000 N. What is the net force that acts on the plane's 73 kg pilot.
Compute the force of tension or compression
While John is travelling along an interstate highway, he notices a 139 mi marker as he passes through town. Later John passes a 116 mi marker. What is the distance between town and John's current location.
A flight attendant pulls her 71 N flight bag a distance of 322 m along a level airport floor at a constant velocity. The force she exerts is 36 N at an angle of 53° above the horizontal.
A rope of negligible mass is wrapped around a 225 kg solid cylinder of radius 0.40 m. The cylinder is suspended some meters off the ground with its axis oriented horizontally, and turns on that axis without friction.
Four or five gram blocks of metal are sitting out in the sun and absorb the same amount of heat energy. Use the following specific heat capacity data to resolve which block will increase its temperature the most.
Find the force to keep object moving.
Write a general expression of the flux
A stone is thrown horizontally at a speed of 4.9 m/s from the top of a cliff 89.5 m high, how long does it take the stone to reach the bottom of the cliff.
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