An artillery shell is fired with an initial velocity of 300 m/s at 55.0° above the horizontal. It explodes on a mountainside 42.0 s after firing. If x is horizontal and y vertical, find the (x, y) coordinates where the shell explodes
7.22 km, 1.68 km
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The specific heat capacity of water is about twice the specific heat capacity of ice. From this information, the amount of heat required to boil 1 kg of water is ________ the amount of heat required to melt 1 kg of ice
a. 1/2 c. 2 times b. equal to d. unrelated to
Compared to orbital velocity, escape velocity is about:
A) the same. B) 70% less. C) 40% more. D) twice as large. E) four times greater.
Probably the best-known comet is ______________ Comet
Fill in the blank(s) with correct word
The primary reason few SSTs were ever built was because a. SSTs endangered the ozone layer. b. SSTs were not economically viable. c. the technology was risky and the planes likely to disintegrate in flight. d. computers predicted that the bow wave would cause oxygen to recombine with nitrogenin the air
e. SSTs travel through the stratosphere.