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A potter's wheel (a solid, uniform disk) of mass 5.7 kg and radius 0.65 m spins about its central axis. A 2.1 kg lump of clay is dropped onto the wheel at a distance 0.41 m from the axis. Calculate the rotational inertia of the system.
A resistor of unknown resistance and a 42.0-? resistor are connected across a 123.0-V emf device in such a way that an 10.0-A current flows
hear the sound of it hitting ground at the foot of the cliff. Ignoring air resistance, how high is the cliff if the speed of sound is 330 {rm m/s}.
A uniform 1-kg disk with a radius of 25 cm rolls 2 m down an incline plane angled at 25°. What is the speed of the disk at the bottom of the plane
A vessel whose walls are thermally insulated contains 2.00 of water and 0.550 of ice, all at a temperature of 0.0. The outlet of a tube leading from a boiler in which water is boiling at atmospheric pressure is inserted into the water.
While an elevator of mass 832 kg moves downward, the tension in the supporting cable is a constant 7730 N. What is the elevator's speed at t = 7.00 s
Carry out the following arithmetic operations: (a) sum of the measured values 756, 37.2, 0.83 and 2.5. The answer must be in significant digits. Since 2.5 and 0.83 have two significant digits, shouldn't the answer be 800 instead of 797.
A container of hot water at 80 degrees cools to 79 degrees in 15 seconds while it is placed in a room that is t 20 degrees. Use newton's law of cooling to estimate the time it will take for the container to cool from 50 degrees to 49 degrees.
What is the current in amperes in a wire of radius. The parallel plates in a capacitor, with a plate area of 8.70 cm2 and an air-filled separation of 3.30 mm, are charged by a 8.90 V battery.
A 2.0 kg, 30-cm-diameter disk is spinning at 300 rpm. How much friction force must the brake apply to the rim to stop it in 3.0 s? find the force by the definition of torque
The dimensions of the picture on a 35.0 mm color slide are x = 24.0 mm by y = 36.0 mm. How far is the slide from the lens
A 1.50 kg box (position is given in meters and time is given in seconds) slides on ice for 1.5 seconds and then encounters a rough surface. Find out the momentum at the start of the animation. Is momentum conserved during the first 1.5 seconds? Is..
The take-up reel of a cassette tape has an average radius of 1.4 cm. Find the length of tape (in meters) that passes around the reel in 38 s
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