PLEASE HELP ASAP Joe, a hiker, stands at the top of a hill on a trail above the ocean. Joe's friend Dave is just starting out at the
trailhead, which is at the beach.
Which statement about this scenario is accurate?
O The air Joe is breathing is denser than the air at sea level.
O The air pressure is higher where Joe is than where Dave is.
O If Joe keeps going up, air pressure will continue to decrease,
O The air Joe is breathing is denser than the air Dave is breathing,

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.