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A 17.0-N block rests on a horizontal surface. The coefficients of static and kinetic friction between the surface and the block are 0.720 and 0.510, respectively. A horizontal string is attached to the block and a constant tension is maintained in the string.
What is the force of friction acting on the block if the tension is 11.24 N?
What is the force of friction acting on the block if the tension is 16.24 N?
A 91.3-kg horizontal circular platform rotates freely with no friction about its center at an initial angular velocity of 1.79 rad/s. Find the angular velocity of the platform with its load
The speed of light in a certain piece of clear plastic is 1.87 108 m/s. A ray of light strikes the plastic at an angle of 17°. At what angle is the ray refracted
question a sprinter starts from rest and accelerates to her maximum speed of 9.5 ms in a distance of 9.3 m.a what was
A 40.0 ball of clay travelling east at 6.00 collides and sticks together with a 20.0 ball of clay travelling north at 5.00. What is the speed of the resulting ball of clay.
A billiard ball moving at 5.80 m/s strikes a stationary ball of the same mass. find the struck ball's velocity after the collision
When one gallon of gasoline is burned in a car engine, 1.18 x 10^8 J of internal energy is released. Suppose that 0.99 x 10^8 J of this energy flows directly into the surroundings (engine block and exhaust system) in the form of heat. If 6.0 x 10^5 J..
a 0.17hp electric motor on a water well pumps water from 42.64m below the surface. the density of water is 1.0 kgliter.
A shotputter throws the shot with an initial spped of 15.5m/sat 34.0degree angle to the horizontal. Calculate the horizontal distance travelled by the shot
After 10.7 s, a spinning roulette wheel has slowed down to anangular velocity of 2.25 rad/s. Determine the angular displacement of the wheel
The work required to stretch a certain spring from anelongation of 4cm to 5cm is 30.5J. What is the work required to increase the elongation from 5cm to 6cm
suppose that the magnetic field of the earth were due to a single current moving in a circle of radius 2910 km through
An AC voltage of the form ?v = 100 sin 1 000t, where ?v is in volts and t is in seconds, is applied to a series RLC circuit. Find the average power delivered to the circuit
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