Acrate is pushed up each of the two ramps shown in the diagram below. based on the concept that simple machines make work easier, and assuming that both ramps are friction less, which statement is true?

ramp b requires less force than ramp a.

ramp a requires less force than ramp b.

ramp b raises the crate higher than ramp a.

ramp a raises the crate higher than ramp b.

In a hydrogen molecule there are a total of four charges, 2 protons in the two nuclei, and 2 electrons. how many unique charge-pairs are there (without double counting)?

The force needed to overcome static friction is usually less than that needed to overcome kinetic friction. true or false?

On a hot saturday morning while people are working inside, the air conditioner keeps the temperature inside the building at 22degreesc. at noon the air conditioner is turned off, and the people go home. the temperature outside is a constant 33degreesc for the rest of the afternoon. if the time constant for the building is 4 hr, what will be the temperature inside the building at 4 : 00 font size decreased by 2 upper p . font size decreased by 2 upper m .? at 6 : 00 font size decreased by 2 upper p . font size decreased by 2 upper m .? when will the temperature inside the building reach 24degreesc? 324281