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Question: According to Dr. Einstein, the speed of light is 186,000 miles per second. How far will a radio wave exhibiting the voltage characteristics of a sine wave move through deep space(to the nearest whole foot) in the time it takes to complete one cycle if it is being broadcast at 1 MHz?
A spring with spring constant 12.5 hangs from the ceiling. A 400 ball is attached to spring and allowed to come to rest. It is after that pulled down 6.80 and released. What is the time constant if the ball's amplitude has decreased to 3.90 after 57...
The dipole moment of a water molecule is6.2×10−30 C·m. What is the electric potentialdue to this dipole at a distance of 1.60e-5 m, ina direction 60° from the direction of the moment vector?
During this process the arrow's deceleration has a magnitude of 1800 m/s2 and the block's acceleration has a magnitude of 450 m/s2
If an object of 50 grams of unknown material at 100 degrees C is mixed with 100 grams of water at 0 degrees C, the final temperature is 40 degrees C
Three children, each of weight 356N, make a log raft bylashing together logs of diameter 0.30m and length 1.80m. How many logs will be needed to keep them afloat in fresh water
During a drive by golfer, the angular velocity of his club is zero at the top of the backswing and 34 rad/s at the bottom of the downswing just before impact with the ball, what is the average angular acceleration of the club
An airplane accelerates down the runway. Assume the jetengines exerts a constant force on the airplane and assume airresistance is porportional to the velocity squared. What is the terminal velocity
The second-order fringe of 660 nm light is observed at an angle of 21° when the light falls on two narrow slits that are 3.68 μm apart. at what angle would we expect it to be observed
Two identical small insulating balls are suspended by separate 0.256 m threads that are attached to a common point on the ceiling. Each ball has a mass of 8.09E-4 kg. Initially the balls are uncharged and hang straight down.
An exhaust tube from a steam generator is submerged in a large container of cool water. what is the change of entropy (in J/deg) of the steam
Two cars of mass 2000 kg and 1000 kg, respectively, collide inelastically. Find the initial speed and direction of the lighter car
Some people think that they can stop themselves rushing forward by putting their hands on the dashboard. Find out the mass of the object that has a weight equal to force you just calculated.
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