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Suppose a 55 kg person stands at theedge of a 5.5 m diametermerry-go-round turntable that is mounted on frictionless bearingsand has a moment of inertia of 1500kgm2. Theturntable is at rest initially, but when the person begins runningat a speed of 3.4 m/s (with respect tothe turntable) around its edge, the turntable begins to rotate inthe opposite direction. Calculate the angular velocity of the turntable. (Assume the person is running in the positivedirection.)
rad/s
How many electrons would have to be placed on the sphere to produce an electric field of magnitude 1.41 105 N/C at a point 8.60 cm from the center of the sphere
A 75?kg jogger runs with a speed of 4.2m/s, What is the jogger's de Broglie wavelength
A solar collector is placed in direct sunlight where it absorbs energy at the rate of 890 J/s for each square meter of its surface. What equilibrium temperature does the collector reach
A 15.0 g bullet is fired at a muzzle velocity of 3250 m/s from a high powered rifle with a mass of 4.75 kg and barrel of lenght 75.0 cm. How long is the bullet in the barrel
What is the change in kinetic energy of the puck
A ball is thrown horizontally from the top of a tower 30m high and lands 15m from its base. What is the ball's initial speed
Two long, parallel wires carry currents of 0.245 A in the same direction. If the wires are 0.034 m apart, Is this force attractive or repulsive
Suppose you are planning a trip in which a spacecraft is to travel at a constant velocity for exactly nine months, how fast must you travel
An aluminium cup of 180 cm3 capacities is totally filled with glycerin at 18° C. How much glycerin (in cubic cm) would spill out of the cup if temperature of both the cup and glycerin is increased to 33° C? (The linear expansion coefficient of alumin..
An electron is at the origin. (a) Calculate the electric potential VA at point A, x = 0.160 cm. V (b) Calculate the electric potential VB at point B, x = 0.170 cm. V What is the potential difference VB - VA? V
A worker stands still on a roof sloped at an angle of 23° above the horizontal. He is prevented from slipping by a static frictional force of 540 N. Find out the mass of the worker.
a 0.5 kg block of aluminum is heated to 200 degrees C. The block is then quickly placed in an air insulated tub of cold water at 0 degrees C and sealed. compute the final temperature of the water and block
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