Answer:
a. yes
Explanation:
The initial speed of the circular saw is:


Deceleration rate needed to stop the circular saw is:


The number of turns associated with such deceleration rate is:



Since the measured number of revolutions is lesser than calculated number of revolution, the circular saw meets specifications.
Answer:
Staples, Bestbuy, Maybe Homedepot
Explanation:
Gravitational Potential Energy, GPE = mgh
Where m is your mass in kg, g is acceleration due to gravity = 9.8 m/s², and h is the height in m.
The only value that be controlled here is the height h. The mass is constant, and acceleration due to gravity at that place is constant.
But h can be varied.
Hence to increase the gravitational potential energy between yourself and Earth is to increase the height h.
This can be done by climbing up a table, or climbing up a building through the stairs, or by using a lift.
B, C, and D.
Solar energy is green energy, it wouldn't contribute to global warming. However some places of the world don't receive as much sunlight (the poles) and at night you don't receive as much sunlight either. Solar energy is also very expensive to farm.