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Q. what is the ratio of the energy released by the fusion of 1.0kg of hydrogen to tht released by fission of 1.0kg of Uranium 235?
Q. A string is wrapped around a disk of mass m = 1.8 kg and radius R = 0.11 m. Starting from rest, you pull the string with a constant force F = 8 N along a nearly frictionless surface. At the instant when the center of the disk has moved a distance x = 0.12 m, a length d = 0.20 m of string has unwound off the disk.
A solid block of mass m2 = 0.5 , at rest on a horizontal frictionless surface, is linked to a relaxed spring (with spring constant k = 150 whose other end is fixed. Another solid block of mass m1 = 2.4 and speed v1 = 2.2 collides with the 0.50 blo..
What are the velocities of the two people after the snowball is exchanged. What is the greatest kinetic energy of the electrons removed from the cathode by this light.
What focal length does the lens require
A 2.30-kg object attached to a spring moves without friction (b = 0) and is driven by an external force given by the expression F = 3.40sin (2pi*t), where F is in newtons and t is in seconds. The force constant of the spring is 35.0 N/m.
A plane leaves the airport in Galisto and flies 159km 68 degrees east of north and after that changes direction to fly 242km at 48 degrees south of east, after which it makes an immediate emergency landing in a pasture.
the fact that it moves very slowly by sky would probably cause it to be named after Yurtle, the god of turtles.
A 23 bullet traveling 240 penetrates a 4 block of wood and emerges going 170. If the block is stationary on a frictionless surface when hit, how fast does it move after the bullet emerges.
A 10 Newton effort force is required to lift a 10kg box just off the ground. What is the effort required to lift the box off the ground using a 3m long lever.
What is the speed of projectile immediately before it hits the ground if air friction does one and a half times as much work on projectile when it is going down as it did when it was going up.
A 258-kg log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. The ramp is inclined at 30.0° with respect to the horizontal. The coefficient of kinetic friction between the log and the ramp is 0.980, and the log has ..
The temperature of the surface of a certain star is 7500K. Most hydrogen atoms at the surface of star are in the electronic ground state. What is the approximate fraction of hydrogen atoms that are in the first excited state (and therefore could e..
For a damped oscillator with a mass of 320g, a spring constant 82N/m and a damping coefficient of 71g/s, what is the ratio of the amplitude of damped oscillations to the initial amplitude at the end of 28 cycles.
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