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If the reproduction constant is 1.00021 for a chain reaction in a fission reactor and the average time interval between successive fissions is 1.20 ms, by what factor does the reaction rate increase in one minute?
A proton has a velocity of v ?= (2.00x10^7 m/s)i ? when it encounters a magnetic field B ?= (0.0200T)j ?. What is the radius of the circular path the proton
A 2.10 sound wave travels through a pregnant woman's abdomen and is reflected from the fetal heart wall of her unborn baby. The heart wall is moving toward sound receiver as the heart beats. The reflected sound is then mixed with the transmitted soun..
A student sitting on a frictionless rotating stool has rotational inertia 0.97 kg*m2 about a vertical axis through her center of mass when her arms are tight to her chest. what's her new rotational velocity
A copper wire, 1 m long, has a density of 0.020 g/cm and vibrates in 4 segments when under tension produced by a 250 g hanging mass
The m1 = 1.4 kg block at rest on a horizontal frictionless surface is connected to an unstretched spring (k = 200 N/m) whose other end is fixed. (See Fig. 10-36.) The m2 = 2.5 kg block whose speed is 4.0 m/s collides with the 1.4 kg block. Assume tha..
q1. a wire of mass 1 g and length 58 cm is stretched with a tension of 480 n. it is then placed near the open end of
It is desired to construct a solenoid that will have a resistance of 6.00 (at 20°C) and produce a magnetic field of 4.00 10-2 T at its center when it carries a current of 4.80 A. estimate the length the solenoid should have
A transparent oil with index of refraction 1.21 spills on the surface of water (index of refraction 1.33), determine the thickness of the oil slick
A 0.20 kg aluminium plate with an initial temperature of 20 degrees c slides down a 15.00m long surface that is inclined at 30 degrees to the horizontal.
Two stones are thrown vertically upward from the ground, one with three times the initial speed of the other. how high (in terms of H) will the faster stone go
Is the center of the mass of the pendulum-ball system at the center of the ball? If not, where and how is the center of mass located
1.a car uniformly decelerates at a rate of -5.00 ms2. how far does the car travel after 1.50 seconds if it initially
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