B) Electric forces and magnetic forces are different aspects of a single electromagnetic force.
C) The operation of a motor depends on the relationship between electric and magnetic forces.
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Answer:
false
Explanation:
the planet saturn rotates around the sun at 21,637mph
the planet mars rotates around the sun at 53,979mph
half the speed of mars is 26,989.5mph
Answer:
Inertia is the resistance of any physical object to any change in its velocity. This includes changes to the object's speed, or direction of motion. An aspect of this property is the tendency of objects to keep moving in a straight line at a constant speed, when no forces act upon them.
Explanation:
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When the distance between the source and the observer is DEcreasing, the observer sees light that has a<em> shorter wavelength</em> than the light actually had when it left the source.
It doesn't matter how the distance between them is decreasing. The source could be moving toward the observer, the observer could be moving toward the source, or they could both be moving in a way that makes the separation between them decrease as time goes on. The result is the same.
(When this is used in Astronomy and Astrophysics, the big trick is: How does the observer know what the wavelength actually WAS when the light left the source ?)
Answer:
When two players are running full speed at each other on a football field they build up their momentum