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A grinding wheel is initially at rest. A constant external torque of 47.2 N· m is applied to the wheel for 18.8 s, giving the wheel an angular speed of 616 rev/min. The external torque is then removed, and the wheel comes to rest 138 s later. Find the moment of inertia of the wheel. Find the frictional torque, which is assumed to be constant.
A vertical straight wire carrying a 9.0 A current exerts an attractive force per unit length of 7.0X10^-4 N/m on a second parallel wire 8.0 cm away
A fire truck has a siren with that generates a sound with a frequency of 8562 Hz. what frequency will you observe
A component with a 20 Ohm resistor is rated for use at power levels not exceeding 2,282 mW. How much current can safely flow through the component
The position of a 50 g oscillating mass is given by x(t) = (2.0 cm) cos(5t), where t is in seconds. Determine the following. (a) The amplitude. (b) The period. (c) The spring constant. (d) The maximum speed
A person is pushing a uniformly-loaded 24.15 kg wheelbarrow along a plank that makes an angle ? = 38.0° with the horizontal. What is the total force the person must apply
compute the distance x the spring was compressed.
A wheel rotates about a horizontal axis. It has an outer radius R1 = 18.8 cm and mass M1 = 5.12 kg. What is the acceleration of the hanging weight after it is released
q1. after being accelerated to a speed of 1.43times105 the particle enters a uniform magnetic field of strength 1.00
An aluminum-alloy rod has a length of 10.007 cm at 16.600 °C and a length of 10.023 cm at the boiling point of water. find the length of the rod at the freezing point of water
Mercury is about 13.6 times the density of the human body. Assume that a person (Weight = 150lb {one could only wish}) were totally immersed in the mercury; what would be the buoyant force experienced by that person?
At full power, how long would it take for car to accelerate from 0 to 56 mph? Neglect friction and air resistance.
The force given by the wind pushes the ship towards North by a velocity of 40 kmph. The ocean current on the other hand, determine the ship's actual velocity
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