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Question 1: Herman Bax of Canada grew a pumpkin with a circumference of 7 m. Suppose an ant crawled around the pumpkin's "equator." The ant started with an angular speed of 3.2 ε -3 rad/s and accelerated steadily at a rate of 6.0 ε -4 rad/s2 until its angular speed was tripled. What was the ant's angular displacement?
Question 2: Tad Burt of Israel rode a bicycle around the world in 77 days. If Bun could have ridden along the equator, his average angular speed would have been 9.0 ε -7 rad/s. Now consider an object moving with this angular speed. How long would it take the object to reach an angular speed of 5.0 ε -6 rad/s if its angular acceleration was 7.5 ε -10 rad/s2?
Question 3: A coal-burning power plant in Kazakhstan has a chimney that is nearly 500 m tall. The radius of this chimney is 7.1 in at the base. Suppose a factory worker takes a 500.0 m run around the base of the chimney. If the worker starts with an angular speed of 0.40 rad/s and has an angular acceleration of 4.0 x 10-3 rad/s2, how long will the run take?
A 1.83 kg book is placed on a flat desk. Suppose the coefficient of static friction between the book and the desk is 0.422 and the coefficient of kinetic friction is 0.229. How much force is needed to begin moving the book
a 122 cm length of string has a mass of 1.70 g. it is stretched with a tension of 6.60 n between fixed supports. what
A particle (q=-4.0 μC, m=5.0 mg) moves in a uniform magnetic field with a velocity having a magnitude of 2 km/s and a direction that is 50o away from that of the magnetic field. Evaluate what is the magnitude of the field
A heavy sled is being pulled by two people as shown in the figure. The coefficient of static friction between the sled and the ground is µs = 0.627, what is the minimum rope tension required
A lens is used as a magnifier to view an ant placed on a piece of paper. The image of the ant is 15cm from the lens and the magnification factor is 3. How far from the paper (the ant) is the lens
One billiard ball is shot east at 2.2 m/s. A second, identical billiard ball is shot west at 0.8 m/s. Find the speed and direction of the first ball after the collision
At a soft drink bottling plant, a horizontal section of pipe carrying citric acid in liquid form goes from a cross-sectional area of 8.00 cm2, determine the liquid flow speed and the liquid pressure
A magnetic field has magnitude of 10 T and can be used to store energy. Find what magnitude of electric field one should use instead of this magnetic field to store the same amount of energy per volume
q1. a block with mass m 19.0 kg slides down an inclined plane of slope angle 17.8 deg with a constant velocity. it is
a 80.0-kg airplane pilot pulls out of a dive by following at constant speed the arc of a circle whose radius is 300 m.
question a 1.0-kg copper rod rests on 2 horizontal rails 1.0 m apart and carries a current of 50 a from 1 rail to the
You are riding a train as it rounds a curve of radius 400 meter at a constant speed. Obtain what is the speed of the train
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