3 years ago

Which of the following is a non renewable resource?

1 answer:

3 0

Carbon isn’t because all the others on the list are naturally made apart from carbon which is man made because of all the pollution . X

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The average force applied to move an initially stationary golf cart over a period of 25 s is 500 N. What is the change in moment

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12500(kg*m/s)

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F=ma=mv/t=p/t

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An overhead electric power line carries a maximum current of 125 A. What is the magnitude of the maximum magnetic field at a poi

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Answer:

B= 55.6×10^(-7) Tesla

Explanation:

B= μoI/(2πr)

B: magnetic field strength

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r: distance from the wire

I : current in the wire

B= (4π×10^(-7)×125)/(2π×4.5)

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6. If two objects experience the same net force, but they have different masses, which object will accelerate at

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i would say the heavier object

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A chef places an open sack of flour on a kitchen scale. The scale reading of

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Answer:

Explanation:

Given

Initial reading on scale =40 N

So, we can conclude that weight of the sack is 40 N

After this a 10 N force is applied upward on the sack such that the net force becomes (40-10) N downward (because downward force is more)

This net downward force is the resultant of earth graviational pull and the applied upward force.

So, this downward force acts on the machine which inturn applies an upaward force of same magnitude called Normal reaction.

This situation can be diagramatically represented by figure given below

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