Arocket (initial mass m 0) needs to use its engines to hover stationary, just above the ground. (a) if it can afford to burn no more than a mass am oof its fuel, for how long can it hover? [hint: write down the condition that the thrust just balance the force of gravity. you can integrate the resulting equation by separating the variables t and m. take v„ to be constant.] (b) if v

igneous rocks also form where plates converge. the subducting plate melts as it sinks into the crust of the earth, and the melt rises into the overriding plate forming volcanoes. metamorphic rocks are formed mainly in the lithosphere, wherever there is high pressure and high temperature. -woods

get the total number of pieces of fruit and divide it by 4 to get the average. the result is the answer to the problem. 14 total number of fruits and there are 4 members. 14 divided by 4 is equals to 3.5.

you get 2.3=1.21*\frac{a}2 or 4.6=1.21a or a=3.802 (b)

explanation: