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You are helping your friend move a new refrigerator into his kitchen. You apply a horizontal force of
F =+214i - 171k N to try and move the 64.0-kg refrigerator. The coefficient of static friction is 0.660.
(a) How much static frictional force does the floor exert on the refrigerator? Express your answer in vector form.
(b) What magnitude of maximum force do you need to apply before the refrigerator starts to move?
an electron is accelerated from rest through a potential difference 1200 v. give the electrons kinetic energy after
At the bow of a ship on a stormy sea, a crewman conducts an experiment by standing on a bathroom scale. Find the maximum downward acceleration experienced by the crewman
A particle is uncharged and is thrown vertically upward from ground level with a speed of 25.0 m/s. As a result, it attains amaximum height h. The particle is then given a positive charge +qand reaches the same maximum height h when thrown vertica..
q1. a simple harmonic oscillator consists of the block of mass 1.90 kg attached to a spring of spring constant 196 nm.
A 1000kg car moving 40m/s skids to a stop. During the skid, the only force is the frictional force between the tires and the road, which is 6000N. Use work and energy to find the distance the car moves before coming to a stop.
Assume that there is an announcement of a fantastic process capable of putting the contents of physics library on a very smooth postcard. Will it be readable with an electron microscope? Explain.
A merry-go-round with a moment of inertia equal to 1250 kg•m2 and a radius of 2.5 meter rotates with negligible friction at 1.70 rad/s. Compute what is her mass
A 200g, 40cm diameter solid cylindrical turntable rotates on frictionless bearings at 60rpm. A 20g block sits at the center of the turntable. What is the turntables angular speed
What is the angular momentum of a figure skater spinning at 2.0rev/s with arms in close to her body, assuming her to be a uniform cylinder with a height of 1.5 m, a radius of 15cm , and a mass of 48kg ? How much torque(in magnitude) is required to sl..
A 1.5-kg playground ball is moving with a velocity of 3.0 m/s directed 30° below the horizontal just before it strikes a horizontal surface. find the magnitude of the average resultant force on the ball
The displacement of a standing wave on a string is given by D = 9.9 sin(0.55x)cos(56t), where x and D are in centimeters and t is in seconds. What is the distance (cm) between nodes
A ball on the end of a string is whirled around in a horizontalcircle of radius 0.405m. The plane of the circle is 1.07m above theground. The string breaks and the ball lands 2.46m away from thepoint on the ground directly beneath the ball's locat..
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