Emitted/given off. exo is a way to remember that is is going away. think of a flame. the heat is emitted off onto you.
<span>0.967 x 10^-6 HZ
This should be correct (:</span>
<u>Answer:</u> The force that must be applied is 15 N.
<u>Explanation:</u>
Force exerted on the object is defined as the product of mass of the object and the acceleration of the object.
Mathematically,

where,
F = force exerted = ?
m = mass of the object = 3 kg
a = acceleration of the object = 
Putting values in above equation, we get:

Hence, the force that must be applied is 15 N.