2 years ago

What is gravity? I need help.

2 answers:

8 0

the force that attracts a body toward the center of the earth, or toward any other physical body having mass. For most purposes Newton's laws of gravity apply, with minor modifications to take the general theory of relativity into account.

S_A_V [24]2 years ago

6 0

Gravity is the name we use for the forces that attract every speck of mass in the universe to every other one.

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Explanation:

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2 years ago

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boyakko [2]

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3 years ago

Calculate a rate of cooling down of air from 80 C to 5C Show calculation. Give an answer in cubic meters per minute and cfm.

antoniya [11.8K]

Explanation:

Given that,

Rate of cooling of air

Initial temperature= 80°C

Final temperature = 5°C

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$\dfrac{dT}{dt}=c(T-T_{0})$

$\dfrac{dT}{dt}=c(\dfrac{T_{1}+T_{2}}{2}-T_{0})$

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Put the value into the formula

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2 years ago

What is the ideal mechanical advantage of a machine that changes only the direction of the input force?

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3 years ago

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Answer:

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If the weight of the bag is greater than the reaction from the spring scale, the scale breaks and the system would not be balanced.

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3 years ago