A sample of an unknown material weighs 300 N in air and only 200 N when submerged in an alcohol solution with a density of 0.70 x 103 kg/m3 . What is the force due to gravitational acceleration? What direction does this force act?
What is the magnitude of the buoyant force? What direction does this force act?
What is the density of the unknown material?

i think the answer is a, hope this is right, that would be my best guess.

the only real purpose of sputnik 1 was to beat the us into space. we were getting close to launching a useful satellite, explorer 1 - which launched on january 31, 1958. the ussr had to beat that, so they launched sputnik 1 on october 4, 19

a sonic boom is a loud boom that breaks the sound barrier

explanation:

higher potential

explanation:

because it is in a high speed so it must move into a of high potential