Answer:
the answer is ture
Explanation:
because the energy substances must absorb in order to change from liquid to gas
Answer:4
Explanation:
Given


Mass of stick is 
Let T be the tension in the red string
Now if the red string is cut , suppose T is the tension in the blue rod immediately after cut
Therefore



Answer:
a magnet that retains its magnetic properties in the absence of an inducing field or current
The boulder has a weight of W=2400 N. The weight of an object is the product between its mass m and the gravitational acceleration g:

Rearranging the relationship, we can calculate the mass of the boulder:

We are told that Superman applies a horizontal force to this object, and as a result, the acceleration of the boulder is

. We can find the force applied by using Netwon's second law of motion: