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Jack was exposed to fast neutrons; he received a radiation dose of 220rem rem on part of his hand, affecting 28.0grams of tissue. The relative biological effectiveness (RBE) of these neutrons is 9.00.
A. How much radiation did Jack receive?
B. What was the total energy of the radiation Jack received?
C. Suppose Jill received the same rad dosage, but from beta rays with an RBE of 1.20 instead of from neutrons. What is the value of the equivalent dose she received?
A flat, uniform, circular disk (R = 2.25 m, m = 84.0 kg) is initially at rest, but it is free to rotate in the horizontal plane about a vertical, frictionless axis through its center.
A starship moving toward Earth with a speed of 0.79 c launches a shuttle craft in the forward direction. What is the speed of the shuttle relative to the starship
What is the charge on a 1.0 cm length of wire. What is the net force exerted on the skier.
A proton, initially traveling in the +x-direction with a speed of 5.00×105m/s, enters a uniform electric field directed vertically upward, What is the strength of the electric field
At t = 5.0 seconds, the cheetah is standing still, having knocked over the gazelle. Illustrate what is the average acceleration of the cheetah from t = 0 to t = 5.0 seconds?
An asteroid is discovered heading straight toward Earth at 13 km/s. An international team manages to attach a giant rocket engine to the asteroid. The rocket fires for 10 min, after which the asteroid is moving at 26 degree to its original path at..
During a physics experiment, helium gas is cooled to a temperature of 10.0K at a pressure of 9.00×10?2atm. What is the avergage energy per atom
A block of mass m = 2.00 kg is dropped from height h = 90 cm onto the spring of spring constant k = 1960 N/m. Find out the maximum distance the spring is compressed.
Speedboat A negotiates a curve whose radius is 152 m. Speedboat B negotiates a curve whose radius is 204 m. Each boat experiences the same centripetal acceleration. Illustrate what is the ratio vA/vB of the speeds of the boats?
After being accelerated to a speed of 1.7×10 5 m/s, the particle enters a uniform magnetic field of strength 1.00 T and travels in a circle of radius 35.0 cm (determined by observing where it hits the screen as shown in the figure). The results of th..
How much greater is an angular momentum of the Earth orbiting about the sun than the moon orbiting about the Earth? (Set up a ratio of angular momenta using data on inside back cover. The period of the moon is about 27.3 days.)
A 747 airliner reaches its takeoff speed of 187 mi/h in 31.4s. What is the magnitude of its average acceleration.
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