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A radar antenna that measures 12 meters from tip to tip (see the figure below) rotates about its midpoint at a rate of 120 revolutions per minute. What is the tangential speed of either tip of the antenna?
A. 150 m/s
B. 4.5 x 103 m/s
C. 75 m/s
D. 12 m/s
E. None of these is correct.
A 150 gram Aluminum calorimeter cup contains 320 grams of water at 22 degrees Celsius. Steam at 100 degrees Celsius is routed into the calorimeter until the temperature of the cup and its contents reaches 50 degrees Celsius.
Find the momentum ( in MeV/c) and the kinetic Energy ( in MeV) of each and compare with the results of using the classical Formular
A 3.00 ? 105 kg subway train is brought to a stop from a speed of 0.500 m/s in 0.500 m by a large spring bumper at the end of its track.
A student is sleeping under a small goose-down comforter that has coefficient of thermal conductivity of 0.025 W/m °C. what is the rate of heat flow through the comforter
A third charge of +8.00nC is placed in problem 2) 5 cm south of origin. What would be the electric force (magnitude and direction) at this point
A 30.0 kg rock slides on a rough horizontal surface at 7.50 m/s and eventually stops due to friction. What average thermal power is produced as the rock stops
A car starts from rest and moves around a circular track of radius 80.0 m. What angle ( in radians ) does the net acceleration make with the car's velocity at this time
A positively charged particle of mass 6.80 10-8 kg is traveling due east with a speed of 80 m/s and enters a 0.31 T uniform magnetic field. The particle moves through one-quarter of a circle in a time of 1.00 10-3 s, at which time it leaves the fi..
An ideal gas is at a temperature of 30 degrees C, find the number of particles per unit volume of the gas
Suppose that blood flows through the aorta with a speed of0.28 m/s. The cross-sectional area of the aorta is 1.2 10-4m2. Find the volume flow rate of the blood
protons are projected with an initial velocity v0 = 10410m/s into a region where a uniform electric field E = 710 N/C is present. The protons are to hit the target that lies a horizontal distance of 1.27mm from the point where protons are launched..
The tires on a mew car have a diameter of 2ft and are warranted for60 000 miles. determine the angle (in radians)through which one of these tires will rotate during the warranty period.
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