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A ball is tossed upwards at 15 m/s from the side of a building. When it is at a displacement of 14 meters below where the ball is launched, what is the final velocity of the ball in m/s? If the answer is negative, include a negative sign, but do not include a positive sign for positive answers.
A certain Crystal has a set of planes spaced 0.30 nm apart. A beam of neutrons strikes the crystal at normal incidence and the first maximum of the diffraction occurs at ?=42 degree. What is de-Broglie wavelength of neutron beam? What should be momen..
A 10-m-long glider with a mass of 780kg(including the passengers) is gliding horizontally through the air at 30m/s when a 70Kg skydiver drops out by releasing his grip on the glider. What is the glider's speed
the weight of the block on a table is 474 n and that of the hanging block is 205 n. ignore all frictional effects and
question interstellar space has a magnetic field on the order of 0.1 nt. matter in this space is mainly hydrogen atoms
If a speed radar captures a car traveling at 175 meters per second how long will it take for it to travel 15 meters
A golf ball is dropped from rest from a height of 8.30 m. It hits the pavement, then bounces back up, rising just 5.90 m before falling back down again, calculate the total amount of time that the ball is in the air
What is the value of electric potential at (a) the center of the square and (b) a point midway between Q1 and Q4 in Figure P16.19? Here, q is q = 10 nC and a is a = 10 cm.
Find (a) the ratio M/m; (b) the velocity of centre of mass; (c) the total kinetic energy of the two particles in the centre of mass; and (d) the final kinetic energy of m in the laboratory system.
A physics teacher does the following emf demonstration. She has two students hold a long wire connected to a voltmeter. The wire is held slack, therefore that it sags with a large arc in it. find the maximum motional emf in the wire
Suppose a star with radius 8.30 108 m has a peak wavelength of 684 nm in the spectrum of its emitted radiation. Find the energy of a photon with this wavelength.
Metal disks are initially spinning on cushions of air, in a standard rotational dynamics apparatus. What is the final angular velocity of the two disks
Two skaters, one with mass 65 kg and the other with mass 60 kg, stand on an ice rink holding a pole of length 10 m and negligible mass. How far does the 60 kg skater move
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