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3 years ago

A force of attraction that exists between any two objects is _______. (1 point)

1 answer:

4 0

The answer is Gravity

There's always a gravity between any 2 objects in this universe. between you and your computer, between you and the floor, between your chair and your table, etc.

We just dont feel it because we live in earth which negates all of those gravities with its own.

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What happens during

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3 years ago

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calculate the diameter of a silver wire of length 75cm , which is extended by 1.85mm when a 10kg mass is suspended from it's end

sdas [7]

Answer: $0.8\ mm$

Explanation:

Given

length of wire $l=75\ cm$

change in length $\Delta l=1.85\ mm$

mass of wire $m=10\ kg$

Young's modulus for silver $E=7.9\times 10^{10}\ N/m^2$

load on wire $F=mg$

$F=10\times 9.8=98\ kg$

change in length is given by

$\Delta l=\dfrac{Pl}{AE}$

Where A=area of cross-section

$A=\dfrac{Pl}{\Delta lE}$

$A=\dfrac{98\times 0.75}{1.85\times 10^{-3}\times 7.9\times 10^{10}}$

$A=\dfrac{73.5}{14.615\times 10^{7}}$

$A=5.029\times 10^{-7}\ m^2$

also wire is the shape of cylinder so cross-section is given by

$A=\dfrac{\pi d^2}{4}=5.029\times 10^{-7}\ m^2$

$\Rightarrow d^2=\dfrac{5.029\times 10^{-7}\times 4}{\pi }$

$\Rightarrow d^2=64.02\times 10^{-8}$

$\Rightarrow d=8\times 10^{-4}\ m$

$\Rightarrow d=0.8\ mm$

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3 years ago

a swimmer can develop a maximum speed of 8m/s when he is swimming in a pool. calculate the time that is required to pass the dis

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Answer:

Explanation:

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3 years ago

The energy from the sun can be used in many different ways. Describe two examples of how humans use the energy from the sun in t

ioda

Answer:

here you go boi

Explanation:

Image result for The energy from the sun can be used in many different ways. Describe two examples of how humans use the energy from the sun in their everyday lives. Make sure that one of your examples includes an energy transformation and explain the form it takes after it is transformed.

Solar energy is transformed into other energy forms for our use on Earth – energy for food (chemical energy), electrical energy and heat energy. Energy from the Sun is transformed into chemical energy, which is passed along in a food chain. Without the Sun, there would be no life on Earth

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2 years ago

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Canyon walls are eroded at a rate of approximately:

AnnyKZ [126]

B. Half a centimeter per year

God bless!! <3

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3 years ago