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Q. A uniform disk turns at 3.40 rev/s around a frictionless spindle. A nonrotating rod, of the equal mass as the disk and length equal to the disk's diameter, is dropped onto the freely spinning disk. They then turn together around the spindle with their centers superposed. What is the angular frequency in rev/s of combination?
A gas expands from I to F. The energy added to the gas by heat is 423 J when the gas goes from I to F along the diagonal path.
Neptune has a mass 17.20 times larger than that of Earth and a radius 3.88 times larger. A person weighing 140 lb on the Earth would weigh how much on Neptune.
While John is travelling along an interstate highway, he notices a 139 mi marker as he passes through town. Later John passes a 116 mi marker. What is the distance between town and John's current location.
A 38.0 kg child swings in a swing supported by two chains, each 3.04m long. The tension in each chain at the lowest point is 429N. Find out the child's speeds at the lowest point.
In a television picture tube, electrons strike the screen after being accelerated from rest throughout a potential difference of 28000 V.
If the football has the mass of .420 kg and the time of contact with the ball is .014 s, what is the force exerted by the ball on a kicker's foot.
What is the strength of the electric field.
A ball dropped from a height of 4.00 m makes an elastic collision with the ground. Assuming no mechanical energy is lost due to air resistance, a) show that the ensuing motion is periodic, b) find the period of the motion.
A loudspeaker of mass 22 is suspended a distance of = 1.6 below the ceiling by two cables that make equal angles with the ceiling. Each cable has the length of = 3.10.
A 1.0mL syringe has an inner diameter of 6.0mm , a needle inner diameter of 0.29 mm , and a plunger pad diameter (where you place your finger) of 1.2 cm . A nurse uses the syringe to inject medicine into a patient whose blood pressure is 140/100mmHg...
What is velocity of the boat relative to the shore
A thing, rigid, spherical shell with a mass of 4.00 kg and diameter of 0.200 m is filled with helium at 0 degrees celsius and 1 atm pressure. It is after that free from rest on the bottom of a pool of water that is 4.00 m deep.
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