Answer:
Explanation:
Gravitational potential energy is the energy an object possesses due to its position. It is the product of mass, height, and acceleration due to gravity.
The object has a mass of 150 kilograms and is raised to a height of 20 meters. Since this is on Earth, the acceleration due to gravity is 9.8 meters per square second.
- m= 150 kg
- g= 9.8 m/s²
- h= 20 m
Substitute the values into the formula.
Multiply the three numbers and their units together.
Convert the units.
1 kilogram meter square per second squared (1 kg *m²/s²) is equal to 1 Joule (J). Our answer of 29,400 kg*m²/s² is equal to 29,400 Joules.
The crate has <u>29,400 Joules</u> of potential energy.
This may shock you:
We NEVER feel speed, velocity, or motion, as long as it's constant.
We only feel CHANGES in speed, velocity, or motion.
That means speeding up, slowing down, or changing direction.
As long as we're moving in a straight line at a constant speed, we don't feel anything.
Answer:
A. burn the coal
Explanation:
Burning the coal is only the way to convert the stored chemical energy of the coal into the the kinetic energy of its molecules that can then be transferred to the nearby objects in the form of heat by the various modes of heat transfer such as conduction, convection or radiation.
Conduction is the contact method of heat transfer in which the adjacent atom transfers the vibration kinetic energy.
Convection is the bulk mode of heat transfer in which the bulk mass of molecules moves near and far to the heat source.
Radiation is the distant mode of heat transfer in the form of electromagnetic waves.
Answer:
Slit separation, 
Explanation:
It is given that,
Wavelength of light, 
The angle between the central bright fringe and the second dark fringe, 
In case of double slits, the condition for dark fringe is given by :
n = 2
So, the slit separation is 
. Hence, this is the required solution.
