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The angular speed of a rotating disk is 0.75 rad/s. What is the frequency of the rotation? (show formulas used)
When a charge that is free to move is released in the presence of an electric field, does it move from a region of high electric potential to a region of low electric potential or vice-versa? Does your reply depend on whether the charge is positiv..
A motorcycle, which has an initial linear speed of6.3 m/s, decelerates to a speed of 2.3 m/s in 4.9 s. What is the angular displacement (in rad) of each wheel
Two 8.0mm×8.0mm electrodes with a0.10-mm-thick sheet of Mylar between them are attached to a 9.0V battery. find the electric field before and after the Mylar is withdrawn
A heat engine operates in a Carnot cycle between 82.0°C and 345°C. It absorbs 20,000 J of energy per cycle from the hot reservoir, What is the mechanical power output of this engine
Calculate the mass of 10.4 gal of gas at 20.0°C
Amtrak's 20th-Century Limited is en route from Chicago to New York at 120km/h when the engineer spots a cow on the track. What is the magnitude of the train's acceleration
Assume a billiard ball is a solid sphere. Its radius is 3 cm and mass is 500 grams. The coefficient of static friction between the ball and the surface is .70. a) Where should you hit the ball so that it experiences pure rolling motion without the..
A baseball pitcher pivots his extended arm about his shoulder joint, applying a constant torque of 190 N · m for 0.21 s to his arm, What is his arm's angular acceleration and final angular velocity
A source emits sound uniformly in all directions. There are no reflections of the sound. What is the total sound power P emitted by the source
A heart defibrillator delivering 400 J of energy by discharging a capacitor initially at 10,000 V has a capacitance of 8.00 µF, What is the voltage of the second defibrillator
What is the frequency of string that was tightened.How high does it rise above the ground.
The figure shows the light intensity on a screen behind a double slit. The slit spacing is 0.20 mm, What is the distance from the slits to the screen
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