An object travels along a right triangle with sides 3 m, 4 m, and 5 m. it returns back to the initial position.
what distance did it travel?

0
3 m
4 m
12 m

(ps i'm pretty sure the answer is 12 because they're asking for distance, not displacement, but just in

An ice-making machine inside a refrigerator operates in a carnot cycle. it takes heat from liquid water at 0.0 degrees celsius and rejects heat to a room at a temperature of 19.2 degrees celsius. suppose that liquid water with a mass of 76.3kg at 0.0 degrees celsius is converted to ice at the same temperature. take the heat of fusion for water to be l_f = 3.34*10^5 j/kg.how much energy e must be supplied to the device? express your answer in joules.

Which compound is held together by the electrostatic force between two ions? a. co2 b. cci4 c. h2s d. mgf2

What was the first instrument to ever record an earthquake?