RADIATION
There are three types of heat transfer or heat propagation; conduction, convection and radiation. Heat transfer is the process by which heat projects externally however, depending on the temperature and pressure. Also called the movement of heat from a low temperatured state which increases as heat progresses.
Conduction is the heat transfer by contact, immediate contact.
Convection is the transfer of heat through air and water.
<span>Radiation is the transfer of heat regardless of the presence of atoms or particles.<span>
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Answer:
there are over 100 billion stars in our galaxy.
Below is an attachment containing the solution.
Answer:
a) 
b) T = 720.85N
Explanation:
With a balance of energy from the lowest point to its maximum height:

Solving for
:


Centripetal acceleration is:



To calculate the tension of the rope, we make a sum of forces:

Solving for T:

T = 720.85N