Accuracy refers to how close a measurement is to the true value
Indicate whether the statement is true or false
TRUE
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Jupiter's moon _______________ appears to have a liquid-water ocean below its icy crust and may contain minerals as a source of raw material for chemical evolution
Fill in the blank(s) with correct word
With respect to the earth, object 1 is moving at speed 0.80 c to the right. Object 2 is moving in the same direction at speed 0.80 c with respect to object 1. How fast is object 2 moving with respect to the earth?
A) 0.64 c B) 0.98 c C) 0.16 c D) 1.6 c E) 0.80 c
A 648-g empty iron kettle is put on a stove. How much heat. in joules. must it absorb to raise its temperature from to (The specific heat for iron is 113 cal/kg ? C°, 1 cal = 4.190 J)
A) 6740 J B) 11,300 J C) 1610 J D) 16,100 J
A fireman is sliding down a fire pole. As he speeds up, he tightens his grip on the pole, thus increasing the vertical frictional force that the pole exerts on the fireman
When the force exerted on his hands equals the force that Earth exerts on him, what happens to the fireman? A) The fireman comes to a stop. B) The fireman descends with slower and slower speed. C) The fireman descends with a smaller but non-zero acceleration. D) The fireman continues to descend, but with constant speed. E) The acceleration of the fireman is now upward.