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Question: One hundred stones are placed on the ground 3 ft. apart, the first being 3 feet from a basket. If the basket and all of the stones are in a straight line, how far does a person travel who starts from the basket and brings the the stones to it one by one?
Unpolarized light is incident upon two polarization filters that do not have their transmission axes aligned. If 18% of the light passes through this combination of filters,
A bowling ball of mass 1 kg, drops onto a spring from 0.2 meter height. The spring constant is also 1. What is the velocity when the ball hits the spring
A weight lifter does a series of arm raises while holding a 3.00 weight. Her forearm (including the hand) starts out horizontal and pivots to a vertical position about her elbow. What is the change in its gravitational potential energy with each ar..
A hoop and a cylinder of the same mass and outer radius are rolled up an incline plane with the same speed. Which goes farther up the incline plane? Explain
In the Bohr-model hydrogen atom the single electron orbits the nucleus in a circle of radius a= 5.3*10 (-11) making f= 6.6*10( 15) revolutions each second
After two days, only one-quarter of a radioactive sample remains. What is the half life of the nuclei
a dense rubber buoy is attached to a lead weight when it is accidentally lost overboard from an ocean going vessel. the
The First Law of Thermodynamics is essentially a statement of conservation of energy. It involves changes in internal energy, the heat flowing into the system and the work done by the system. When heat flows into the system, the internal energy of..
An electromagnetic wave in vacuum has an electric field amplitude of 405 V/m. Calculate the amplitude of the corresponding magnetic field
A thin film of alcohol (n = 1.36) lies on a flat glass plate (n = 1.51). When monochromatic light, find the minimum thickness of the film
q1. a bucket filled with water has a mass of 20 kg and is attached to a rope which in turn is wound around a 0.050-m
q1. a car moving at 37 ms approaches a stationary whistle that emits 270 hz sound. the speed of sound is 347 ms. what
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