The thermal energy of an object is the energy contained in the motion and vibration of its molecules. Thermal energy is measured through temperature. The energy contained in the small motions of the object's molecules can be broken up into a combination of microscopic kinetic energy and potential energy.
Answer: 3.7×10¹²watts
Explanation:
Radiation is one of the mode of heat transfer and modes differs from each other based on their medium of heat transfer. Radiation is a process of transferring heat energy from one point to another without heating the intervening medium (no material medium is required).
According to Stefan's law of radiation, the rate of emission of radiant energy is directly proportional to the fourth power of its absolute temperature.
Mathematically, R = eAT⁴
e is constant of proportionality called emissivity. Emissivity varies depending on the type of body being considered.
For the question, we are considering black body and emissivity of black body is 1 being a perfect body.
A is the area of the body
T is the absolute temperature
e = 1
A = 0.5cm²
T = 1650°C
Rate of radiation = 1×0.5×1650⁴
= 3.7×10¹²watts.
The hole will therefore radiate 3.7×10¹²watts
Answer:
The wavelength is 
Explanation:
From the question we are told that
The wavelength of the red laser is 
The spacing between the fringe is 
The spacing between the fringe for smaller laser point is 
Generally the spacing between the fringe is mathematically represented as
Here 
is the distance to the screen
and d is the distance of the slit separation
Now for both laser red light light and small laser point D and d are same for this experiment
So
=> 
Where 
is the wavelength produced by the small laser pointer
So
=>
This can happen from someone having anxiety, or fear, or just exercising.
Cool ocean air causes a cool climate.
Explanation:
A large body of water such as an ocean influences climate by causing cool ocean air to cause cool climate.
The world's climate results from the sun's energy and the vast ocean circulation pattern that results from this.
- Around the equator, the sun receives direct sunlight and this warms the air around the ocean.
- The air wells up with vapor and moves away to the land area.
- As it moves over land, it loses moisture.
- This cold air becomes denser and sinks to the surface bringing in a cool climate
- The cool climate brings dryness with it.
learn more:
Climate brainly.com/question/10856870
#learnwithBrainly
