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In one of the many books published by the Greek astronomer Ptolemy called Optics, Ptolemy reports the results of refraction experiments he conducted by observing light passing from air into water. His results are as follows: angle of incidence = 10.0 degrees, angle of refraction = 8.00 degrees; angle of incidence = 20.0 degrees, angle of refraction = 15.5 degrees. Find the percentage error for each of Ptolemy's measurements.
A charge of -3.8 × 10-9 C is at the origin and a charge of 8.1 × 10-9 C is on the x-axis at x = 3 m. At what location on the x-axis is the electric field zero
A sled with a mass of 8.00 kg moves in a straight line on a frictionless horizontal surface. find the force acting on the sled
Water is moving at a speed of 7.55 meter per second through a fire hose with an internal diameter of 5.99 centimeter. Compute the gauge pressure of water in the hose
a star of mass 10 msun is composed entirely of fully ionized 12c.a what is the mean molecular weight ??b suppose that
In proton-antiproton annihilation, a proton and an antiproton (a negatively charged particle with the mass of a proton) collide and disappear, producing electromagnetic radiation, Find the total energy of the radiation
The rails are laid on a winter day when their temperature is 1.8°C. (a) How much space must be left between adjacent rails if they are just to touch on a summer day when their temperature is 32.2°C
At the earths surface, a projectile is launched straight up at a speed of 8.7 km/s. To what height will it rise
An object of mass 10.0 kg is released from the top of an inclined plane which makes an angle of inclination of 30.0? with the horizontal. The object slides along the inclined plane
The boiling point of liquid nitrogen is 77.3 K at atmospheric pressure. What is this temperature on the Celsius scale
Two boat landings are 1.0 km apart on the same bank of a stream that flows at 1.8 km/h. What is the speed of the boat relative to the water
a ferris wheel has a radius of 11.0 m and rotates once every 11.0 s. what is the force of the chair seat on you at each
A stream of water strikes a stationary turbine blade horizontally. The incident stream has a velocity of +16m/s whilst the exit has a velocity of -16m/s. mass of water per second that strikes the blade is 30kg/s.find the magnitude of average force ex..
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