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Jack was exposed to fast neutrons; he received a radiation dose of 160 rem on part of his hand, affecting 27.0 grams of tissue. The relative biological effectiveness (RBE) of these neutrons is 11.0. (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 1.50 instead of from neutrons. What is the value of the equivalent dose she received?
A 38.0 kg child swings in a swing supported by two chains, each 3.04m long. The tension in each chain at the lowest point is 429N. Find out the child's speeds at the lowest point.
What force must be applied to 5kg object to move it downward with acceleration 1 m/s^2. What is the direction of the applied force.
A hydraulic ram 200mm in diameter and 1.2 m long moves wholly within a concentric cylinder 200.2mm in diameter, What is the viscous force resisting the motion when the ram moves at 120mm . s-1
q1. two 75.0 w 120 rm v light bulbs are wired in series then the combination is connected to a 230 v supply. how much
A stunt man whose mass is 70 kg swings from the end of a 3.7-m long rope along arc of a vertical circle. Presume he starts from rest when the rope is horizontal.
An infinitely long line of charge has a linear charge density of 6.00×10?12C/m . A proton is at distance 14.5cm from the line, How close does the proton get to the line of charge
A highway curve with radius 850 ft is to be banked so that a car traveling 48.0 mph will not skid sideways even in the absence of friction
What was the velocity of the bullet just before it struck the wooden block? The length of the string is 2 meters.
A military helicopter on a training mission is flying horizontally at a speed of 90.0m/s when it accidentally drops a bomb (fortunately, not armed) at an elevation of 390m. How far does it travel horizontally while falling
A charge 2q is located at the origin. A charge -3q is located at x = d, y = 0, z = 0. Where is the electric field zero
A uniform rod of mass 3.30×10?2kg and length 0.360m rotates in a horizontal plane about a fixed axis through its center, What is the angular speed of the system at the instant when the rings reach the ends of the rod
q1. suppose a small metal ball of mass and negative charge. the ball is released from rest at the point and constrained
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