How long has wheel been in motion at start of interval
A wheel, starting from rest, has a constant angular acceleration of 1.2 rad/s^2 . In a 1.8-s interval, it turns through an angle of 75. How long has the wheel been in motion at the start of this 1.8-s interval?
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A curve in a road forms part of a horizontal circle. As a car goes around it at constant speed 14.0 m/s, the horizontal total force on the driver has magnitude118N. What is the total horizontal force on the driver if the speed on the same curve is
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Find the force acting on the electron as it revolves in a circular orbit of radius 5.18x 10-11 m.
A 255-g mass hangs from the other end of the string and is released. Find the acceleration of the cart and the hanging mass.
A healthy heart pumps about 70 ml of blood in one heart beat. The average pressure exerted is about 100 mm-Hg and there are 70 heartbeats in a minute. (a) What is the average power output of the heart?
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The electric field in an electromagnetic wave is given by the following (using the standard units) E=20cos(10^7x-wt) where x is the position along the x-axis.
Find the magnetic field at the center of a set of Helmholtz coils each with radius R=0.1m and each carrying a total current I=1.1A (so if there are N turns, each turn carries current I/N).
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