Answer:

Explanation:
The work done on the object at rest is all converted into kinetic energy, so we can write

Or, re-arranging for v,

where
v is the final speed of the object
W is the work done
m is the object's mass
If the work done on the object is doubled, we have W' = 2W. Substituting into the previous formula, we can find the new final speed of the object:

So, the new speed of the object is
.
The weight of anything is determined on how much gravity is pulling on the object. For example a balloon full of helium floats away but iron or concrete would fall to the ground. hope this helps :)
A scientific theory is something that can not be proven through experimentation, hope this helps
Answer:
keeps your circulatory system healthy
Explanation:
One formula for power is
P = (voltage squared)/(resistance).
Resistance of 3 equal resistors in parallel is 1/3 of the value = 100/3 ohms.
Power = (40^2)/ (100/3)
. = (1600 • 3) / (100)
. =. 48 watts .