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You find that it takes a horizontal force of 171 {rm N} to slide a box along the surface of a level floor at constant speed. The coefficient of static friction is 0.76, and the coefficient of kinetic friction is 0.37
If you place the box on a dolly of mass 5.3 {rm kg} and with coefficient of rolling friction 1.3×10−2, what horizontal acceleration would that 171 {rm N} force provide?
Two point charges are separated by 6 cm. THe attractive force between them is 20N. What is force between them when they are separated by 9 cm? What is the equation used to arrive at this reply?
A Carnot engine performs work at the rate of 380 kW when using 730 kcal of heat per second. If the temperature of the heat source is 560 C, at what temperature is the waste heat exhausted.
Pretend a person can walk only at a certain pace no faster, no slower. If you time her uninterrupted walk across a room of known length, you can compute her walking speed.
What is the least coefficient of friction between tires and road that will allow cars to negotiate the turn without sliding off the road.
Find the magnitude and direction of the force on a proton at x = -3.2 m, y = 0.9 m.
A 44.0 kg child is in a swing that is attached to ropes 1.60 m long. The acceleration of gravity is 9.81 m/s2. Find the gravitational potential energy associated with the child relative to the child's lowest position under the following conditions.
A skier with a mass of 63 kg starts from rest and skis down an icy slope that has a length of 50 m at an angle of 32 degrees with respect to the horizontal. Iillustrate what is the speed of the skier at the bottom of the slope?
A wheel with radius 43.9 cm rotates 4.27 times every second. Find the period of this motion.
if a 2.5 kg ball puts 118 joules of energy in a spring with a 614 n/m constant, how far is the spring compressed.
It was a rainy day and the coefficient of friction was estimated to be 0.42. Use these data to determine the speed of the car while the driver slammed on (and locked) the brakes.
If the coefficient of friction between the block and the floor is 0.40, what is the mass of the block.
These two isotopes are singly ionized (+e) and each is given a speed of 6.00 x105 m/s.
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