Light escaping from white dwarfs will show a gravitational redshift
Indicate whether the statement is true or false
TRUE
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What is erupting out of the geysers on Triton?
A) liquid water with basalt B) liquid methane with a dark hydrocarbon slush C) liquid nitrogen with carbon grit D) liquid carbon dioxide with graphite E) liquid hydrogen with dark helium ash
In a parallel universe, the quantity ? has the value 3.14049… . Express ? in that universe to (a) four significant figures (b) five significant figures
What will be an ideal response?
A skydiver of 75 kg mass has a terminal velocity of 60 m/s. At what speed is the resistive force on the skydiver half that when at terminal speed?
a. 15 m/s b. 49 m/s c. 30 m/s d. 42 m/s e. 36 m/s
What happens to centripetal force when speed decreases, in the special case that the object continues moving in a circle of the same radius?
a. The force also decreases. b. The force increases. c. The radius cannot stay the same. d. The force sometimes stays the same and sometimes decreases. e. Speed does not affect centripetal force.