Answer:
The fraction of the time is 38.67%.
Explanation:
Given that,
Energy = 4.68 KJ
Resistance = 60
Voltage =110 V
If the rate of heat energy supplied by the coil to the oil bath = Q

We need to calculate the power released by the resistor at voltage

Put the value into the formula



We need to calculate the fraction of the time

Put the value into the formula


The percentage of time is

Hence, The fraction of the time is 38.67%.
Answer:
<em>The gravitational potential energy of the parachutist is 3,528,000 J</em>
Explanation:
<u>Gravitational Potential Energy
</u>
It's the energy stored in an object because of its height in a gravitational field.
It can be calculated with the equation:
U=m.g.h
Where:
m = mass of the object
h = height with respect to a fixed reference
g = acceleration of gravity, usually taken as
.
The parachutist has a mass of m=120 kg and he jumps at a height of h= 3,000 m. Computing the gravitational potential energy:
U = 120 * 3,000 * 9.8
U = 3,528,000 J
The gravitational potential energy of the parachutist is 3,528,000 J
Static friction
hope this helps
A derived quantities is terms of the 7 base quantities via a system of quantity equations which are called SI derived units.