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A 20.0-kg box rests on a horizontal surface. The coefficient of static and kinetic friction between the box and the surface are 0.30 and 0.10 respectively. If a force of 50.00 N , what is the friction force between the box and the surface?
Blocks A (mass 2.00 kg) and B (mass 15.00 kg) move on a frictionless, horizontal surface. Find the velocity of each block after they have moved apart
Sources A and B emit long-range radio waves of wavelength 330 m, with the phase of the emission from A ahead of that from source B by 90°. find the magnitude of the phase difference at the detector
suppose you were on the moon instead of on the earth. Assuming your average reaction time is the same, how far would the yardstick fall
One radiator has a volume of 0.09mt³. It contains saturated vapor at a temperature of 100°C. find The total mass of vapor in the radiator
For a damped oscillator with a mass of 170g, the spring constant 92 N/m and a damping coefficient of 55g/s, what is the ratio of amplitude of the damped oscillations to the initial amplitude at the end of 22 cycles.
Blocks A (mass 2.00kg ) and B (mass 10.50kg ) move on a frictionless, horizontal surface. Find the maximum energy stored in the spring bumpers and the velocity of each block at that time
A 54.0 g sample of a conducting material is all that is available. The resistivity of the material is measured to be 11 10-8 ·m, What must be the diameter of the wire
How much work is done by the motor when the motor when the position of the arm is moved from x=0.150m to x=0.750m? what is the power of the motor in watts
Observations of a certain galaxy show that stars at a distance of 16 pc from the center of the galaxy orbit a central supermassive black hole at a speed of 200 km/s
A grandfather clock is controlled by a swinging brass pendulum that is 1.3 m long at a temperature of 30.°C. What is the change in the length of the pendulum rod
A playground is on the flat roof of a city school,6.00m above the street below. The vertical wall of the building is7.00m high, Find the speed at which the ball was launched
Light of wavelength 700 nm is incident on the face of a fused quartz prism (n = 1.458 at 700 nm) at an incidence angle of 72.4°. Calculate the angle of refraction at the first surface
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