Physics, 27.11.2020 21:50 squawk1738

Hi! hina can you help me with those 2 questions

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Question: Differentiate between how fossil fuels and nuclear fuels heat. How can the heat be released by both types of fuels be put to good use?

Fossil fuels and nuclear fuels both can be released and be put in to good use because both produce green house gasses that help the environment by creating more heat that helps the atmosphere.

Question: Explain why it is important for us to find alternatives for fossil fuels to meet our energy needs?

It’s important for us to find alternatives for fossil fuels energy needs because more renewable energy can lower the prices and need more natural gas and coal by increasing competition, our energy supplies, and when being used it can increase renewable energy that protects consumers when using fossil fuels.

Answer from: Quest

given data:

determine the horse power (h.p) = ?

force applied to move the box(f) = 10 pounds,

box lifted from a distance (d) = 3 feet

time taken to lift (t) = 10 sec,

the horse power is defined as amount of work required to move a load. the horse power is equal to 550 foot-pound per second

1 h.p = 550 foot-pound/second

it can also be defined as the the load that need to be move a body for certain distance in a certain amount of time.

mathematically,

h.p = (force × distance)/ time

= (10 × 3)/ 10

= 30/10

= 3 foot -pound/sec

hence, the horse power is needed to move the box is 3 foot-pound/second

important note: 1 h.p = 550 foot-pound/second = 746 watts

Answer from: Quest

Answer: buoyancy forceexplanation: in simple terms, the principle states that the buoyancy force on an object is equal to the weight of the fluid displaced by the object, or the density of the fluid multiplied by the submerged volume times the gravitational acceleration, g. this is also known as upthrust.

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