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
What are the two smallest nonzero film thicknesses (in nm) for which reflected light undergoes constructive interference? Let (a) be the smaller of the two values.
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?
Is it possible for both the pressure and volume of a monatomic ideal gas to change without causing the internal energy of the gas to change?
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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