The sidereal day is determined by the Earth's rotation with respect to the stars
Indicate whether the statement is true or false
TRUE
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_______________ is the rate at which a star moves across the sky
Fill in the blank(s) with correct word
Which of the following would NOT cause the gravitational force on an object near Earth's surface to increase?
A. an ore deposit just under the surface B. a lower elevation C. an increase in its mass D. a horizontal velocity
It is July and you are in your hometown. As you travel northward toward the north pole, how does the number of daylight hours vary? How does the number of daylight hours vary as you travel southward toward the south pole?
Two small objects, with masses m and M, are originally a distance r apart, and the gravitational force on each one has magnitude F. The second object has its mass changed to 2M, and the distance is changed to r/4. What is the magnitude of the new gravitational force?
A. 32F B. 2F C. F/32 D. F/16 E. 16F