Identify each type of energy as mechanical or non-mechanical.

- Kinetic energy

- Gravitational potential energy

Explanation:

The term 'mechanical energy' refers to the sum of the kinetic energy and the gravitational potential energy of an object, therefore all the other choices are excluded.

The kinetic energy of an object is the "energy of motion", and it is given by:

where m is the mass of the object and v is its speed.

The gravitational potential energy of an object is the potential energy that it has because of its height above the ground, and it is given by

where m is the mass, g is the gravitational acceleration and h is the height above the ground.

The sum of these two energies makes the mechanical energy of an object:

measure their densities same density, same sub

when a device is used in a circuit in which the voltage is 81 v, the current flowing through the device is 3 a. what is the resistance of the device?

a. 27 ω

b. 40.5 a

c. 243 ω

d. 243 a

the correct answer is a. 27