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Two large spheres with the same diameter are mounted on vertical axles in a science museum. Both are coated in a thin layer of white plastic, and although they appear identical, one is actually a solid wooden sphere, while the other is a hollow metal sphere, constructed so that they have exactly the same mass. Because of the plastic coating, you can't tell which is which simply by touching. But you can tell by making them spin: which one will be harder to start spinning? Explain.
A tow truck pulls a car 4.00 km along a horizontal roadway using a cable having a tension of 910 N, How much work does the cable do on the car if it pulls horizontally
Determine the resolution limit set by diffraction . what average force do you need to apply to stop the sled? Utilize the concepts of impulse and momentum.
q1. a bucket filled with water has a mass of 20 kg and is attached to a rope which in turn is wound around a 0.050-m
The string in a yo-yo is wound around an axle of radius 0.537 cm. The yo-yo has both rotational and translational motion, like a rolling object, and has mass 0.320 kg and outer radius 1.97 cm. How long does it take to fall
A 36 kg girl and a 7.9 kg sled are on the frictionless ice of a frozen lake, 20 m apart but connected by a rope of negligible mass. How far from the girl's initial position do they meet
Sewage at a certain pumping station is raised vertically by 5.30 m at the rate of 1 920 000 liters each day. The sewage, of density 1 050 kg/m3, Find the output mechanical power of the lift station
A straight 2.30 wire carries a typical household current of 1.50 (in one direction) at a location where the earth's magnetic field is 0.550 gause from south to north. Find the magnitude of the force that our planet's magnetic field exerts on this c..
How much work has he done? (b) Another player, wearing clothes that offer better protection against heat loss, is able to remain in the game long enough to do 2.1 × 105 J of work. What is the magnitude of the heat that he has lost?
A dog sitting 3.7m from a vertical mirror thinks its image is another dog. How far is the image from the dog
What is Lagrangian for the system
Determine the escape velocity from the Sun for an object at the Sun's surface (r = 7.5 × 105 km, M = 2.0 × 1030 kg)
A mass-spring system undergoes simple harmonic motion with amplitude A. What fraction of the system's energy is kinetic energy when the object's position is x=A/2
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