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Two wheels have the same mass and radius of 4.3 kg and 0.50 m, respectively. One has
(a) the shape of a hoop and the other
(b) the shape of a solid disk. The wheels start from rest and have a constant angular acceleration with respect to a rotational axis that is perpendicular to the plane of the wheel at its center. Each turns through an angle of 12 rad in 9.2 s. Find the net external torque that acts on each wheel.
What phase difference between two otherwise identical travelling waves, moving in the similar direction along a stretched string.
What is magnetic flux through the desk surface
The supersonic aircraft Concorde has a length of 63.0 when sitting on the ground on a typical day when the temperature is 16.0. What is the temperature of the Concorde's skin in flight
In the typical X-ray lamp. The electrons are accelearated in the potential difference of 10000V before hitting the water cooled electrode. Find the shortest wavelength of X-rays produced in this lamp.
The glow-in-the-dark dials on some watches and some keychain lights shine with energy provided by the decay of radioactive tritium, 3^1H. What is the speed of the emitted electron
A block of mass = 2.90 is attached to a string that is wrapped around the circumference of a wheel of radius = 7.20. The wheel rotates freely about its axis and the string wraps around its circumference without slipping. At first the wheel rotates..
x = 2 + 3t - t^2, Where x is in meters and t is in seconds, Determine At the time is the object at rest
On a winter day heat leaks out of a house at the rate of 2.5e4 kcal/h. At what rate does this process produce entropy
In the physics lab a metal spring is stretched 10cm vertically downward by a 500 g mass attached to it. How much would the similar spring with the same attach mass stretn themon? The mass of the moon is 7.35 x 10 to the 22kg, gravity is 1.62 m/s a..
Two identical positive charges exert a repulsive force of 6.2 x10-9 N when separated by a distance of 3.6 x10-10 m. compute the charge of each.
A barbell spins around a pivot at its center . The barbell consists of two small balls, each with mass m = 460 grams, at the ends of a very low mass rod whose length is L = 24 cm. The barbell spins with angular speed ω = 50 radians/s.
What is the reactance of a 8.2×10?2?F capacitor connected to a 19kV (rms), 540Hz line? Determine the frequency and the peak value of the current
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