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aksik [14]
3 years ago
10

Please hellp!!!!!!!!!!!!!!!!!!!!?

Physics
2 answers:
Elza [17]3 years ago
5 0
Second to last
sorry if that’s wrong
but have a good day!!:)
daser333 [38]3 years ago
4 0

Answer:

the second to last by the north pole

Explanation:

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Which of the following best describes an isotope? Which of the following best describes an isotope? an atom with an unequal numb
deff fn [24]

Answer:

a structural variation in which different atoms of the same element have different numbers of neutrons

Explanation:

An isotope is an atom of an element having the same number of protons but different number of neutrons. Different isotopes are used for different purposes. Example: some are used in medicines , food irradiation, etc.

Carbon has three isotopes  C 12, C 13, C 14. All three of them have 6 protons but have different numbers of neutrons.

C 12 is a common element and is abundant in nature

C 13 is less abundant than C 12

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3 years ago
You push a 28kg wheelbarrow forward at a constant velocity with 600 N of force. How much is friction pushing backwards?
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F = applied force on the wheelbarrow in forward direction = 600 N

f = frictional force pushing in backward direction of wheelbarrow = ?

m = mass of the wheelbarrow = 28 kg

Since wheelbarrow moves forward at a constant velocity

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force equation for the motion of wheelbarrow in forward direction is given as

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600 - f = 0

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hence the frictional force comes out to be 600 N

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