The mechanical advantage is defined as the ratio between the load (output force) and the effort (input force):
for the ramp in our problem, the output force is 300 N, while the input force is 100 N, so the mechanical advantage of the ramp is:
Answer:
(a) Energy will be 675 J
(B) charge will be 450 C
(C) Total number of particles will be 
Explanation:
We have given that a flashlight uses 0.75 watts of power
So power P = 0.75 watt
Voltage is given as V = 1.5 volt
Time is given as t = 15 minutes
We know that 1 minute = 60 sec
So 15 minutes = 
(A) We know that energy is given by 
(b) We know that energy is also given by 
So 
Now we have given charge on each particle 
So number of charge particle 
Answer:
A, molecules
Explanation:
Molecules were viewable around the time period of the computers shown on the screen
<span>1) Explain how the particles that make up solid matter can be in perpetual motion if they do not change position. Answer: they do not mov, just vibrate a bit more and move further apart. And as a result solid expand a bit.
</span><span>2) How the Kinetic Theory of Matter defines heat. Answer: Heat is a form of energy that particles convert into kinetic energy. Adding a heat energy increases the kinetic energy of particles. This means that as a substance is heated - the particles vibrate faster and move further apart. </span>
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