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A pulsar is a rapidly rotating neutron star that continuouslyemits a beam of radio waves in a searchlight manner. Each time thepulsar makes one revolution, the rotating beam sweeps across theearth, and the earth receives a puls of radio waves. For oneparticular pulsar, the time between two successive pulses is 0.064sec. Determine the average angular speed (in rad/s) of this pulsar.
How far from a 53.6 mm focal-length lens must an object be placed if its image is to be magnified 2.12X and be real.
Suppose V rms = 240 V for an alternating current power source. What is the amplitude of the voltage for the source
A soap film formed in a loop of wire is, because of its weight, not exactly uniform in thickness, but wedge-shaped in cross section. By how much does the film differ in thickness over the distance
A carousel is initially at rest. At t=0 it is given a constant angular acceleration a=0.060 rad/s2, which increases its angular velocity for 8.0s. determine the angular velocity of the corousel
A baseball is seen to pass upward by a window 28m above the street with a vertical speed of 13 m/s. find the max height assuming the ball was thrown from the street
How much does it cost to cook food in a 12,000 W oven for 47.6 minutes? Assume electricity costs 8.0 cents per kW·h
Calculate the y-component of the magnetic force.
A hair breaks under a tension of 1.1 N. What is the diameter of the hair? The tensile strength is 2.0 108 Pa
The cylindrical beam of a 80.0 mW laser is 0.80 cm in diameter. What is the rms value of the electric field
An electron is released from rest at a perpendicular distance of 9.6 cm from a line of charge on a very long nonconducting rod. What is the magnitude of the electron's initial acceleration
Consider an RLC circuit with driving emf amplitude Εm = 10 V, resistance R = 12 Ω, inductance L = 1.0 H, Find the amplitude of the voltage across the inductor at resonance
If a feather is dropped on the moon falls 81.7cm in one second, calculate the acceleration due to gravity on the moon
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