An object has a mechanical energy of 1575 j and a potential energy of 1265 j.

a. what is the kinetic energy of the object?

b. if the mass of the object is 12 kg, what is its speed?

c. how high above ground is the object?

7.a 5 kg object is moving downward at a speed of 12 m/s. if it is currently 2.6 m above the ground…

a. what is its kinetic energy?

b. what is its potential energy?

c. what is its mechanical energy?

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 basic property determines a colored light's placement on the spectrum of visible light? a. speed b. frequency c. amplitude d. velocity

Give me a example of a decomposer. explain what would happen if decomposers were absent from a forest ecosystem