Answer:The temperature of a piece of Metal X with a mass m of 95.4g increases from 25.0°C to 48.0°C as the metal absorbs 849 J of heat.
Explanation:
Explanation:
Acceleration is defined as the change in velocity over time.
When there is an increment or increase in the magnitude of velocity of a moving body then it is known as positive acceleration.
Whereas when there is a decrease in magnitude of velocity of a moving body then it is known as negative acceleration.
Thus, we can conclude that positive acceleration occurs when an object speeds up.
The difference between light waves and sound waves are that sound waves travel faster than light wave and have a frequency range while light waves have a to me range.
Answer:
av=0.333m/s, U=3.3466J
b.

Explanation:
a. let
be the mass of block A, and
be the mass of block B. The initial velocity of A,
-The initial momentum =Final momentum since there's no external net forces.

Relative velocity before and after collision have the same magnitude but opposite direction (for elastic collisions):

-Applying the conservation of momentum. The blocks have the same velocity after collision:

#Total Mechanical energy before and after the elastic collision is equal:

Hence, the maxumim energy stored is U=3.3466J, and the velocity=0.333m/s
b. Taking the end collision:
From a above, 
We plug these values in the equation:


Answer:
75 miles an hour
I hope this is correct and helps