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A Goodyear blimp typically contains 5400m3 of helium (He) at an absolute pressure of 1.1multiplied by 105 Pa.The temperature of the helium is 272 K. What is the mass of the helium in the blimp? kg
A Carnot engine operates between the temperatures 420 K and 300 K. How much heat must be given to the engine to produce 2500 J of work
A certain string just breaks while it is under 25 N of tension. A boy uses this string to whirl a 0.75-kg stone in a horizontal circle of radius 2.00 m. The boy continuously increases the speed of the stone. At about what speed will the string bre..
A ball of mass 0.45 kg is traveling with a velocity of 1.2 m/s north, 2.4 m/s east and 0.6 m/s up. What is the angular momentum of the ball with respect to the point at which the rope is attached to the post
The magnetic field perpendicular to a single 13.7 cm diameter circular loop of copper wire decreases uniformly from 0.600 T to zero. how much charge moves past a point in the coil
A 79-kg person is exposed to 83 mrem of α particles (RBE = 12). How much energy (in joules) has this person absorbed
Two billiard balls have velocities of 1.50 m/s and -1.0 m/swhen they meet in an elastic head-on collision. What is the final velocity of the first ball after collision
A softball of mass 0.220 kg that is moving with a speed of 8.5 m/scollides head- on and elastically with another ball initially atrest. calculate velocity of the target ball after the collision
You find an unlabeled box of fine needles, and want to determine how thick they are. A standard ruler won\'t do the job, since all you can tell is that each needle is less than a millimeter thick. What is the diameter of the needle
A projectile is projected from the origin with a velocity of 30.0 m/s at an angle of 45 degrees above the horizontal. What is the range of the projectile
A negative charge (-q) with a mass of 0.29 kg is dangling vertically on a string. Directly below this charge, is a charge with same amount of charge, but with the opposite sign (+q). When it is located 22.74 cm below the charge on the string, the ..
The captain of a boat wants to travel directly across a river that flows due east with a speed of 1.00 m/s. Estimate the speed of the boat relative to a person
A 27.4 kg runaway grocery cart runs into a spring with spring constant 387 N/m and compresses it by 75.5 cm. What was the speed of the cart just before it hit the spring
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