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A 1 kg mass A is attached to a support by a cord of length 80 cm, and it is held horizontally, as shown right. After released it swings downward striking the 2 kg mass B which is at rest on a frictionless tabletop. Assuming that the collision is perfectly elastic, what are the velocities of each mass immediately after impact?
If a pair of E and B at a point satisfies Faraday's law in differential form, does it necessarily follow that it also satisfies Ampere's circuital law in differential form, and vice versa?
A 210g , 30.0-cm-diameter turntable rotates on frictionless bearings at 61.0rpm. What is the turntable's rotation angular velocity when the block reaches the outer edge
A person with bifocal vision has a prescription of -1.75D/+1.50D, which represents the refractive power of the lenses to correct myopia and presbyopia, respectively. What is the focal length of each lens
A corn hole player throws a bean bag by swinging it near the ground at 10 m/s. The objective is to land the bag in the opposing hole located 7.3m away. What are these two angles
a mass m is released from rest at a height 4r and then travels along a frictionless track through a circular loop. the
Then, what's happening in air (other than air drag) when a fast moving heavy object slices through it? How does the motion of air look like in there?
What is the rms current in an RL circuit when a 60.0Hz 240V rms ac voltage is applied, where R = 1.80k? , and L = 420mH?, What is the phase angle between voltage and current
A baseball player slides into third base with an initial speed of 4.6 m/s. how far does the player slide before coming to rest
A sheet of glass having an index of refraction of 1.40 is to be coated with a film of material having an index of refraction of1.55 in order that green light by a wavelength of 525 nm (in air)will be preferentially transmitted via constructive interf..
Julie drives 100 mi to Grandmother's house. On the way to Grandmother's, Julie drives half the distance at 35.0mph and half the distance at 73.0mph. What is her average speed on the return trip
a 33.1-kg child runs with a speed of 2.80 ms tangential to the rim of a stationary merry-go-round. the merry-go-round
Megan's mass is 27 kg. She climbs the 4.8 m ladder of a slide and reaches a velocity of 3.6 m/s at the bottom of the slide. How much work was completed by friction on Megan? Imagine that air resistance is negligible.
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