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A system is devised to exert a constant force of 8 N on an 80-kg body of mass initially at rest. The force pushes the mass horizontally on a frictionless table. How far does the body have to be pushed to increase its mass-energy by 25%?
A toboggan approaches a snowy hill moving at 10.9 m/s. The coefficients of static and kinetic friction between the snow and the toboggan are 0.470 and 0.320, Find the acceleration of the toboggan as it is going up the hill
if you have a 20 by 20 square opening and you need an equalaterial triangle to span the opening what are the smallest
a steel bar 10cm long is welded end to end with a copper bar 20cm long. each bar has the same cross sectional area on
Blood can carry excess energy from the interior to the surface of the body, where the energy is dispersed in a number of ways. determine the temperature of the blood
With what initial speed should a positive charge, +q, be given such that if starting infinitely far away from a fixed positively charged nuclues, +Q, of radius R, the positive charge is just able to get to the surface of the positive charge, done wit..
Calaculate the position and size of image
A hot air heating system rated at 84,000 Btu/hr has an efficiency of 65%. The furnace fan can move 225 ft3 of air per minute. If the air enters the furnace at 60.0°F, determine the temperature of the outlet air.
An extension cord is used with an electric weed trimmer that has a resistance of 18.7 ?. Determine the resistance of the extension cord
Presume a spherical planet P has a uniform density of 4.72 x 10^3 kg/m^3 and a radius R = 3604km. For a parcel that weighs 64N on the surface of the spherical Earth.
a pump for a power plant takes in saturated water at 1.5 psi and boosts its pressure to 1500 psi. the pump has an
A 20-N horizontal force pushes an object along a rough floor so that the object moves with a constant velocity of 7.0 m/s
a 1000 N crate is being pushed across a level floor at a constant speed Vi=1.75 m/sec by a force of F=300N at an angle of theta=20 Degrees below horizontal. what is the final velocity of the crate
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