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Can the Sum of the torques on an object be zero while the net force on the object is nonzero? Explain. Can the Sum of the forces on an object be zero and the Sum of the torques non- zero? Explain
The skis have a thrust of 220 N. Sam's speed at the bottom is 45.0 {rm m/s}. Illustrate what is the coefficient of kinetic friction of his skis on snow?
Suppose a 100m diameter stony (p= 3 g/cm^3) meteroid impacts the Earth with a speed of 20km/s. Assume all kinetic energy goes into the creation of an atmospheric blast wave.
If you were to use wire of twice the diameter, which of the above answers would change? Would they increase or reduce.
You have a 200 resistor, a 0.400 H inductor, a 5.00 F capacitor, and a variable-frequency ac source with an amplitude of 3.00 V. At what frequency will the current in the circuit be greatest
What is the value of a current in the smaller loop that would result in zero total magnetic fields at the center of the two loop system.
A box slides down a frictionless 6.02 m high hill, starting from rest. How far from the bottom of the hill does the box come to rest
By means of a rope whose mass is negligible, two blocks are suspended over a pulley, as the drawing shows, with m1 = 12.2 kg and m2 = 42.8 kg. find the mass of the pulley
To develop muscle tone, a woman lifts a 4.50 kg mass held in her hand. She uses her biceps muscle to flex the lower arm through an angle of 60.0°. How much work does she do
If the string is 9.50 m long, has a mass of 55g and is pulled taut with a tension of 9.5 N, how much time does it take for a wave to travel from one end of the string to other.
an object mass 10.0 kg slides upward on a slippery vertical wall. a force f of 60n acts at an angle of 60 degrees.
A 10 kg box is on the flatbed of a truck that is accelerating along a straight horizontal road. What is the max acceleration the truck can reach without the box falling
An unmarked police car traveling a constant 85km/h is passed by a speeder. what was the speeder's speed
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