A roller coaster does a loop de loop at 35 m/s, with a radius of 32 meters. What is the acceleration?

That depends on what kind of environ meant it is in  in space it has the same force that was applied when the velocity was gained

The best answer is (a) which is universal law is in effect at all times. it is constantly at play in everything we do and governs our lives. it is also important to note that universal law applies to not only everything on earth, but everything in the universe as well, which is another reason why it is in effect at all times.

Planck decided to assume that atoms could only vibrate at certain frequencies that were whole numbers eg 2f, 3f and so on. others used to think that atoms vibrate continuously