The Big Bang was an expansion of matter into empty space
Indicate whether the statement is true or false
FALSE
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The disk of the Milky Way is approximately 20,000 ly in diameter
a. True b. False Indicate whether the statement is true or false
A student in the front of a school bus tosses a ball to another student in the back of the bus while the bus is moving forward at constant velocity. The speed of the ball as seen by a stationary observer in the street
a. is less than that observed inside the bus. b. is the same as that observed inside the bus. c. is greater than that observed inside the bus. d. may be either greater or smaller than that observed inside the bus. e. may be either greater, smaller, or equal to that observed inside the bus.
Determine the charge on the wool or fur after it has been used to rub a rubber rod
What is the difference between energy and power?
A) Power is the rate at which energy is used, so its units are a unit of energy divided by a unit of time. B) Power is measured in joules and energy is measured in watts. C) Power is used to describe energy of light, while the term energy has a broader meaning. D) There's no difference: Energy and power are different names for the same thing.