A type B9 star is hotter than a type A0 star
Indicate whether the statement is true or false
TRUE
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A 500-kg elevator is pulled upward with a constant force of 5500 N for a distance of 50.0 m
(a) What is the work done by the 5500-N force? (b) What is the work done by gravity? (c) What is the net work done on the elevator? What will be an ideal response?
A car headlight and an interior dome light use the same voltage, but the headlight consumes much more power because
a. its resistance is lower b. the current in it is larger c. it uses energy faster d. all of the above
Part of astrophysics is understanding the history of celestial objects
a. True b. False Indicate whether the statement is true or false
If a ship has a mass of 10 million kilograms, what volume of fresh water must it displace in order to float? The density of water is 1000 kg/m3
A) 1010 m3 B) 1012 m3 C) 104 m3 D) 107 m3 E) 108 m3