Once a planet forms in a disk-like nebula around a star, its orbit is fixed and will never change
Indicate whether the statement is true or false
FALSE
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The Sun crosses the celestial equator going southward at the point called the _____
A) vernal equinox B) winter solstice C) summer solstice D) autumnal equinox
A car is moving along a straight highway and accelerates at a constant rate while going from point A to point B. If the acceleration is positive, increasing the speed of the car, where does the position where the instantaneous speed equals the average speed occur for the interval from A to B?
a. midway between A and B b. closer to A than to B c. closer to B than to A d. Any of the answers could be correct depending on the original speed.
Which of the following changes would cause the fusion rate in the Sun’s core to increase?
A. An increase in the core temperature B. An increase in the core radius C. A decrease in the core temperature D. A decrease in the core radius
Two charges that are separated by one meter exert 1-N forces on each other. If the charges are pushed together so the separation is 25 centimeters, the force on each charge will be
A) 1 N. B) 2 N. C) 4 N. D) 8 N. E) 16 N.