Answer:
speed = 0.8854539 miles per hour
= 0.8854539 mi/h
Explanation:
Then, it jumps to HIGHER ORBITALS
Answer:
5.4272 kilogram is the mass of the blood in Jeff's body.
Explanation:
Mass of the blood in Jeff's body = m
Volume of the blood in Jeff's body = V = 5.12 L
Density of blood =
5.4272 kilogram is the mass of the blood in Jeff's body.
Answer:
Explanation:
<u>Energy Transformation</u>
Also called as energy conversion, is the process where energy changes from one form to another. There are three types of energy present in this problem. When the object is at rest at the top of the ramp, it has gravitatory potential energy, calculated as
When the object slides down the frictionless ramp, it loses all of the potential energy since it's converted to kinetic energy, given by
Thus
Finally, when the object is in contact with a rough surface, all the energy is transformed into thermal energy. The work done by the friction force is equivalent to the change of kinetic energy, since all the velocity is lost during the process:
Since the kinetic energy is equal to the original potential energy:
The negative sign indicates the work was against the movement, i.e. the force and the displacement are 180° apart.
Note this result does not depend on the distance D needed to stop the block or the coefficient of kinetic friction.
I believe the answer to that question is A. If you can obtain the time it takes to reach the bottom of the cliff, then you can solve for the other two values.