What is the uncertainty at 95% (in cubic feet) of the same rectangular excavation from previous question? the dimensions are repeated as follows: length = 299.150+/-0.805 feet width = 99.100+/-0.650 feet depth = 22.000+/-0.700 feet note: your answer should be rounded based on the rules of the significant figures (of the errors). only make rounding after the final answer is computed. do not include unit in the answer.

Aspacecraft can attain a stable orbit 300 kilometers above earth if it reaches a velocity of 7.7 kilometers per second. the formula for a rocket's maximum velocity v in kilometers per second is vequalsminus0.0098tplusc ln upper r, where t is the firing time in seconds, c is the velocity of the exhaust in kilometers per second, and r is the ratio of the mass of the rocket filled with fuel to the mass of the rocket without fuel. find the velocity of a spacecraft whose booster rocket has a mass ratio of 20, an exhaust velocity of 2.1 km/s, and a firing time of 15 s. can the spacecraft achieve a stable orbit 300 km above earth?