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A wheel free to rotate about its axis that is not frictionless is initially at rest. A constant external torque of +59 N·m is applied to the wheel for 15 s, giving the wheel an angular velocity of +530 rev/min. The external torque is then removed, and the wheel comes to rest 120 s later. (Include the sign in your answers.)(a) Find the moment of inertia of the wheel.(b) Find the frictional torque, which is assumed to be constant.
A cube of mass m1 = 6.5 kg is sitting on top of another cube of the same size and mass m2 = 1.1 kg while they are both in free-fall
An unstable particle is at rest and suddenly decays into two fragments. No external forces act on the particle or its fragments. What is the speed of the less massive fragment
A motorcycle, which has an initial linear speed of 6.4 m/s, decelerates to a speed of 1.5 m/s in 5.7 s. estimate the angular displacement (in rad) of each wheel
A resistor (R = 900 ?), a capacitor (C = 0.25 µF), and an inductor (L = 4.0 H) are connected in series across a 240 Hz AC source for which ?Vmax = 100 V. estimate the phase angle between the current and voltage
You need to make a series ac circuit having a resonance angular frequency of 1550rad/s using a 142 ohm resistor, a 10. microF capacitor, and an inductor. What should be the inductance of the inductor
A 15 kg block is accelerated at 2.0 m/s2 up a frictionless plane inclined at 5.0° to the horizontal, with the speed increasing from 10 m/s to 24 m/s. What is the change in the block's mechanical energy
Ann is driving down a street at 53km/h. suddenly a child runs into the street. If it takes Ann 0.709s to react and apply the brakes, how far will she have moved before she begins to slow down? Answer in units of m.
The light energy that falls on a square meter of ground over the course of a typical sunny day is about 20 MJ. The average rate of electric energy consumption in one house is 1.0 kW. Find the energy consumption and area required by the solar cell
A 13000 kg railroad car travels alone on a level frictionless track with a constant speed of 17 m/s. A 6500 kg load, originally at rest, is dropped onto the car. What will be the car's new speed.
A 1.00-µF capacitor is connected to a 12.0-V battery. How much energy is stored in the capacitor
Two equal positive charges of magnitude q1 = q2 = 5.5 nC are on the y axis at y1 = +3 cm and y2 = -3 cm. What is the force exerted on a third charge q0 = 4 nC when it is placed on the x axis at x = 2 cm
A bead with a mass of 0.02 g and a charge of 20nC is free to slide on a vertical rod. At base of the rod is a fixed 20nC charge.
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