Answer: I am studying heat transfer and have learned there are three kinds of heat transfer: conduction, convection, and radiation. Some examples are:
Conduction:
Touching a stove and being burned
Ice cooling down your hand
Boiling water by thrusting a red-hot piece of iron into it
Convection:
Hot air rising, cooling, and falling (convection currents)
An old-fashioned radiator (creates a convection cell in a room by emitting warm air at the top and drawing in cool air at the bottom).
Radiation:
Heat from the sun warming your face
Heat from a lightbulb
Heat from a fire
Heat from anything else which is warmer than its surroundings.
Explanation: A good example would be heating a tin can of water using a Bunsen burner. Initially the flame produces radiation which heats the tin can. The tin can then transfers heat to the water through conduction. The hot water then rises to the top, in the convection process.
The atmosphere would be another example. The atmosphere is heated by radiation from the Sun, the atmosphere exhibits convection as hot air near the equator rises producing winds, and finally there is conduction between air molecules, and small amounts of air-land conduction.
Nuclear fusion and fission releases tremendous amount of energy using radioactive material as a fuel.
Fusion and fission are similar in that they both release large amounts of energy.
Nuclear fusion is a process in which two nuclei join to form a larger nucleus.
Nuclear fission is a process in which a nucleus splits into two smaller nuclei.
At first sight, it doesn’t make sense that both fission and fusion release energy.
The key is in how tightly the nucleons are held together in a nucleus. If a nuclear reaction produces nuclei that are more tightly bound than the originals, then the excess energy will be released.
It turns out that the most tightly bound atomic nuclei are around the size of iron-56.
Thus, if you split a nucleus that is much larger than iron into smaller fragments, you will release energy because the smaller fragments are at a lower energy than the original nucleus.
If instead you fuse very light nuclei to get bigger products, energy is again released because the nucleons in the products are more tightly bound than in the original nuclei.
To know more about fusion and fission follow
Answer: C) They both result in products that have less mass than the reactants
Explanation:
Answer:
Tendons connect muscle to bone. These tough, yet flexible, bands of fibrous tissue attach the skeletal muscles to the bones they move. Essentially, tendons enable you to move; think of them as intermediaries between muscles and bones.
Hope this helps! (:
Answer:
Explanation:Tendons connect muscle to bone. These tough, yet flexible, bands of fibrous tissue attach the skeletal muscles to the bones they move. Essentially, tendons enable you to move; think of them as intermediaries between muscles and bones.