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A rotating wheel has a constant angular acceleration. It has an angular velocity of 5.0 rad/s at time t = 0 s, and 3.0 s later has an angular velocity of 9.0 rad/s. What is the angular displacement of the wheel during the 3.0-s interval?
a. 21 radb. 15 radc. 27 radd. There is not enough information given to determine the angular displacement.
A DNA molecule (deoxyribonucleic acid) is 2.35 ?m long. The ends of the molecule be-come singly ionized so that there is ?1.60×10^?19 C on one end and +1.60 × 10^?19 C on the other. The helical molecule acts as a spring and compresses 1.50 percent..
A 1100 kg cannon, which fires a 50 kg shell witha speed of 506 m/s relative to the muzzle, is set at anelevation angle of 39° above the horizontal. At what angle with the ground is the shell projected
A projectile is fired with an initial speed of 65.9 m/s at an angle of 37.8 degree above the horizontal on a long flat firing range. Determine the total horizontal distance covered (that is, the range)
a tugboat tows a ship at a constant velocity. the tow harness consists of a single tow cable attached to the tugboat at
he box is taken up a mountain where the air pressure outside the box is 8.00 104 Pa. The inside of the box is completely evacuated. Illustrate what is the magnitude of the force required to pull the lid off the box?
An object is in front of a converging lens with a focal length of 11.0 cm. The lens produces a real image located 25.0 cm from the lens. what is the image distance of the new lens
During a circus performance, a 70.3-kg human cannonball is shot out of an 15.4-m-long cannon. determine the average net force exerted on him in the barrel of the cannon
the edge of a cube consist of equal resistors of resistance r which are joined at the orners let a battery be connected
Wishing to move his television set to another room, the owner extends the aerial feeder cable, calculate the size of the signal transmitted across the join to the second cable
q1. consider standing waves in an air column inside a pipe. one end of the pipe is open and the other end is closed.a
Professor Spenditt, oblivious to economics and politics, proposes the construction of a circular proton accelerator around the Earth's circumference using bending magnets that provide a magnetic field of 1.5T. What would be the kinetic energy of prot..
a person throws an object upward with an initial velocity of 20 ms. assuming that the object has an initial height of
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