A stationary electric charge produces a magnetic field around it
a. True
b. False
Indicate whether the statement is true or false
False
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If Earth's mass decreased to one-half its original mass with no change in radius, then your weight would
A) decrease to one-quarter. B) decrease to half. C) stay the same. D) none of the above
Length Contraction: A stretch of land is 12.5 km long on a map.(a) What would be its length to an observer moving by, parallel to the stretch, at 0.9500c?(b) Which is the proper length for this stretch of land?(c) How fast relative to Earth would the observer have to move for the land to appear 6.50 km long? Express your answer in terms of the speed of light.
What will be an ideal response?
The planets never travel in a straight line as they orbit the Sun. According to Newton's second law of motion, this must mean that
A) the planets are always accelerating. B) the planets have angular momentum. C) the planets will eventually fall into the Sun. D) a force is acting on the planets.
An object that has zero resistance is a __________
Fill in the blank(s) with correct word