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An ancient bone contains 55.5% as much Carbon 14 as a piece of living matter with an equal carbon content. How old is the bone?
A weight (with a mass of 90 kg) is suspended from the point near the right-hand end of a uniform boom with a mass of 71kg. To support the uniform boom a cable runs from this same point to a wall (the left-hand vertical coordinate) and by a pivot on t..
Two identical diverging lenses are separated by 16 cm. The focal length of each lens is -8.0 cm. Determine the final image distance relative to the lens on the right
How far from the dog would the suitcase land? You can ignore air resistance.
he catapult on an aircraft carrier can take an aircraft weighing 300,000 N from 0 to 84.1 m/s in 9.3 seconds, What is the acceleration of the aircraft when it launches
The efficiency of a Carnot engine is 27%. The engine absorbs 795 J of heat per cycle from a hot reservoir at 499 K. Determine the heat expelled per cycle and the temperature of the cold reservoir.
The angular speed can be represented as ? = (rad/s)(1 rev/2p rad) = 2.53e7 rev/s. The electrons travel around a circle of radius .07m, 25 million times per second. What is the period of revolution of the electrons
A well-insulated container of negligible heat capacity contains 150g of ice at 0 degrees. If 20g of steam is injected into the container, what is the final equilibrium temperature of the system
A laser-beam is fired through the air into a solid block of diamond (don't ask where we got it, it's a secret). What is the angle of refraction within the diamond
At a grocery store, a spring scale (spring constant 450 N/m) hangs near the produce section. What is the velocity of the pan immediately after the oranges land on the pan
Objects with masses of 180 kg and a 480 kg are separated by 0.410 m. Find the net gravitational force exerted by these objects on a 58.0-kg object placed midway between them
A small ball is attached to one end of a spring that has an unstrained length of 0.204 m. The spring is held by the other end, What is the maximum acceleration of the eardrum
A 130kg mail bag hangs by a vertical rope 3.3m long. As the bag is moved to this position, how much work is done by the worker
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