1. A student in the lunchroom blew into his straw with a force of 0.26N. (This was pre-pandemic.) The column of air that pushed the liquid in the glass had an area of
0.21 cm². If the liquid in the glass pushed upward with a force of 79 N, what was the
area of the liquid at the surface of the glass?

In a good thermo flask the main cause of heat loss is

Place me with this question is my last question

One hazard of space travel is debris left by previous missions. there are several thousand masses large enough to detect by radar orbiting the earth, but there are far greater numbers of very small masses such as flakes of paint. calculate the force exerted by a 0.110 mg chip of paint that strikes a space shuttle window at a relative speed of 5.00 ✕ 103 m/s and sticks, given the collision lasts 6.00 ✕ 10-8 s. such a collision chipped the window of the ill-fated challenger in june 1983, causing $50,000 of damage.