Aworker with spikes on his shoes applies a constant horizontal force of 20 n to push a 40-kg box across a frictionless, frozen lake. what is the acceleration of the box?
2.0 m/s^2
0.5 m/s^2
4.1 m/s^2
8.0 m/s^2

What happens when the vapor pressure of a liquid is equal to the external pressure?

If you visited mount shasta city (elevation 900 m [3000 ft.]) and found the outside air temperature to be 27°c (81°f), what would be the air temperature at the summit of mount shasta (elevation 4200 m [14,000 ft.]) at that moment-assuming that the temperature conditions with altitude change at an average, or normal, lapse rate?

Does science support the idea that humans have influenced global warming? provide specific examples that show how two knowledgeable individuals with differing opinions might argue.