Ahydraulic jack has a small piston area a1 = 2 m^2 and the large piston area a2 = 20 m^2. a 1500 kg car needs to be lifted. a) how much force equivalent needed on the effort end f1? p1 = f1/a1, p1 = p2, (f = mass x g) b) what is the mechanical advantage of the system?

Which type of wave can travel without a medium

The speed of sound in ice, water, and steam is shown. what best explains the speed of sound in different states of matter? sound travels fastest in ice because energy is easier to transfer when the molecules are close together. sound travels slowest in steam because the sound has to move around the gas molecules that are far apart. sound travels fastest in ice because the temperature of solids is always greater, so the heat transfers the sound energy. sound travels slowest in steam because the pressure is so great the sound cannot travel though the steam particles.

Which magnetic property best describes a magnet’s ability to act at a distance? magnets are dipolar. magnets attract only certain objects. magnets have magnetic fields. magnets can transfer their properties to certain materials.