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A merry-go-round rotates at 5 rpm and is shaped like a disc with a radius of 3 m and a mass of 100kg. If a child (m=40 kg) hops onto the edge of the merry-go-round when it is in motion, what will be the new rotational speed?
A child playing in a swimming pool realizes that it is easy to push a small inflated ball under the surface of the water while a large ball requires a lot of force
questionnbspnbspa particle has initial velocity 5 ms due east and acceleration 2 ms2 due west. find the distance
A 30-06 caliber hunting rifle fires a bullet of mass 0.0146 kg with the velocity of 314 m/s to the right. The rifle has a mass of 2.49 kg.
An engine compresses air down 1/16 its initial volume. The initial pressure is 7.7 X10^6 pa. Find the temperature after compression
Assume that the temperature of the bullet doesn't change appreciably, how much ice is melted as a result of the collision.
In a large centrifuge used for training pilots and astronauts, a small chamber is fixed at the end of a rigid arm that rotates in a horizontal circle. How long is the arm of the centrifuge
A certain centrifuge produces a centripetal acceleration of magnitude exactly 1220g at a point 11.7 cm from the axis of rotation. Find the number of revolutions per second
A resistor, capacitor and inductor are connected in series to an ac source with a frequency of 30 Hz and an rms potential of 40 V. What is the resonance frequency for this circuit
A man in a restaurant asked a waiter for a juice glass, a dinner plate, water, a match, and a lemon wedge. How did the waiter get the water into the glass
A 42-g ball consists of a plastic spherical shell and a water-filled core. the shell has an outside diameter equal to 56.2 mm, What is the density of the plastic
A system undergoes a two-step process. In the first step, the internal energy of the system increases by 228 J, What type of process is the overall process
An 11.70 kg weather rocket generates a thrust of 240 N. The rocket, pointing upward, is clamped to the top of a vertical spring. The bottom of the spring, whose spring steady is 470 N/m, is anchored to the ground.
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