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A flywheel of mass 187 kg has an effective radius of 0.63 m (assume the mass is concentrated along a circumference located at the effective radius of the flywheel).
(a) How much work is done to bring this wheel from rest to a speed of 122 rpm in a time interval of 34.9 s?
(b) What is the applied torque on the flywheel (assumed constant)?
A small glass bead charged to 7.4nC is in the plane that bisects a thin, uniformly charged, 10-cm-long glass rod, What is the total charge on the rod
Illustrate what is the velocity of the second block after the bullet imbeds itself? (b) Find the ratio of the total kinetic energy after the collision to that before the collision.
Consider the Earth and a cloud layer 900 m above the planet to be the plates of a parallel-plate capacitor. what is the maximum charge the cloud can hold
Estimate the terminal velocity for a dust particle in air. Assume it has a radius of 1.0 um and a density similar to that of balsa wood
Consider a hot-air balloon. The deflated balloon, gondola, and two passengers have a combined mass of 315 kg, Then find the temperature of the air inside the balloon
An electron is accelerated by a 4.5 kV potential difference. How strong a magnetic field must be experienced by the electron if its path is a circle of radius 5 cm.
By what fraction does your mass increase when you and your car travel down the highway at 70 mph
In the school cafeteria, a trouble-making child blows a 10.0 g spitball through a 30.0 cm straw. What was the maximum force on the spitball
The objective lens of the refracting telescope at the Lick Observatory in California has a focal length of 57 ft. What is the refractive power of this lens
A stationary spherical conductor with a radius of 2.00 cm has a potential of -257 V on the surface. What is the impact speed of the proton
Suppose a 20 kg ball moving at 5 m/s collides with a 100 kg ball moving at 3 m/s. How much kinetic energy was lost in the collision
question11 give an everyday instance that illustrates the difference between acceleration and velocity. give a case of
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