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An experimental bicycle wheel is placed on a test stand so that it is free to turn on its axle. If a constant net torque of 8.00 N m is applied to the tire for 2.00 s, the angular speed of the tire increases from zero to 100 rev/min. The external torque is then removed and the wheel is brought to rest with friction in its bearings in 100 s.
a) Calculate the friction torque.
b) Calculate the moment of inertia of the wheel about the rotation axis.
c) Calculate the total number of revolutions made by the wheel in the 100 s time interval.
you are given a 120 V battery;a hairdryer designed to workproperly at 120 V, where it's rated at 1,200 W; and a mixer designed to work properly at 60 V, where its rated at 120 W. Youalso happen to have a large supply of 60 Ω resistors.
Jane, looking for Tarzan, is running at topspeed (6.7 m/s) and grabs a vine hanging vertically from a talltree in the jungle. How high can she swing upward
If the mass of the electron is 9.109 × 10–31 kg, illustrate what is the magnitude of its relativistic momentum?
Consider hydrogen atom in the ground state. Determine, in electron volts, the total energy. Decide, in electron volts, the potential energy.
It is fairly easy to produce a static magnetic field of 0.050 T in the lab. If an EM wave could be produced with maximum magnetic field, B0=0.050 T, what would be the rate of energy transfer
A rifle with a weight of 20 N fires a 3.5-g bullet with a speed of 250 m/s. (a) Find the recoil speed of the rifle. Incorrect: Your answer is incorrect. Your response differs from the correct answer by more than 10%. Double check your calculations. m..
A uniform magnetic field , with magnitude 1.2 mT, is directed vertically upward throughout the volume of a laboratory chamber. What magnetic deflecting force acts on the proton as it enters the chamber
A Hall probe uses the Hall effect to measure the size of magnetic fields - it does this by measuring the potential difference across the electric field created by the displacement of charge
A 0.10-mm-wide slit is illuminated by light of wavelength 589 nm. Consider a point P on a viewing screen on which the diffraction pattern of the slit is viewed; the point is at 30° from the central axis of the slit.
Two of Angie's friends are talking to each other at a distance of 3.0 m from where Angie stands. What sound intensity does he measure for the two talkers
The index of refraction of crown glass for red light is 1.51, while for blue light it is 1.531. Find the angle of refraction for blue light
The figure shows three identical chambers containing a piston and a spring with spring constant k. The chamber in a is completely evacuated, and the piston just touches its left end. In this position, the spring is relaxed. In b, the chamber contains..
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