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A cyclist turns her bicycle upside down to repair it. She then notices that the front wheel is executing a slow, small-amplitude, back-and-forth rotational motion with period 12 s. Treating the wheel as a thin ring of mass 600 g and radius 30 cm, whose only irregularity is the tire valve stem, determine the mass of the valve stem.
A microwave oven is powered by an electron tube called a magnetron that generates electromagnetic waves of frequency 2.25 GHz, Calculate the speed of the microwaves from these data.
A spaceship is approaching a space station at a speed of 2.55 multiply.gif 105 m/s. What is the frequency of the beacon observed on the spaceship
Bruce stands on a bank beside a pond, grasps the end of a 10.00-m long rope attached to a nearby tree and swings out to drop into the water. If the rope starts at an angle of 36° with the vertical, what is Bruce's speed at the bottom of swing.
According to the Guinness Book of World Records (1990 edition, p. 169), the highest rotary speed ever attained was 2010 m/s (4500 mph). The rotating rod was 15 cm (5.9 in) long. Imagine the speed quoted is that of the end of the rod.
An RLC circuit with R = 20.4? , L = 355mH , and C = 48.8?F is connected to an ac generator with an rms voltage of 21V, Determine the average power delivered to this circuit when the frequency of the generator is twice the resonance frequency
You are in a laboratory and investigating properties of a converging lens. You place a screen 80 cm away from the object, Calculate how far the image is from the lens
a projectile is launched from a 50 m high cliff, with an initial velocity of 65.0 m/s, at an angle 67.4 degrees above horizontal. how far away from the cliff does it land
Tests of lung capacity show that adults are able to exhale 1.5 liters of air through their mouths in as little as 1.0 second. If a person blows air at this rate through a drinking straw with a diameter of 0.60 cm, what is the speed of air in the stra..
The centers of a 14kg lead ball and a 110g lead ball are separated by 8.0cm. What gravitational force does each exert on the other
q1. a student drops a penny from the top of a tower and decides that he will establish a coordinate system in which the
An engineer has designed a machine to produce electricity by using the difference in the temperature of ocean water at different depths. what is the maximum efficiency of this machine
Write the Ampere's Law for a path that surrounds both conductors
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