How much heat is needed to warm 365 mL of water in a baby bottle from 240C to 38C

The long handle on a rake is a(n) a. lever b. screw c. wedge d. inclined plane

What is the most useful equation for electric power?

When the displacement of a mass on a spring is 12a the half of the amplitude, what fraction of the mechanical energy is kinetic energy? at what displacement, as a fraction of a, is the mechanical energy half kinetic and half potential?