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juin [17]
3 years ago
8

A 20 kg bicycle carrying a 50 kg

Physics
1 answer:
Misha Larkins [42]3 years ago
7 0

Where's the question?

The weight of the bicycle will be 70kg which means that the bicycle has more friction to the ground.

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What makes a good scientific question? (1 point)
liraira [26]

C. It is answered by observation and evidence.

Good scientific explanations are defined, measurable and controllable. They can be answered by an experiment.

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3 years ago
What is the change in potential energy if the distance separating the electron and proton is increased to 1.0 nm?
Vlada [557]

Answer:

Ep=-2.3*10^{-19}J

Explanation:

The change in potential energy can be expressed as:

Ep=K.\frac{q1.q2}{r}

where K is a constant with a value of 9*10^{9}\frac{N.m^{2}}{C^{2}}, q1 and q2 are the charges of the proton and the electron and r is the distance between them.

The charge for the proton is +1.6*10^{-19}C and the charge for the electron is -1.6*10^{-19}C.

Converting r=1.0nm to m:

1.0nm*\frac{1*10^{-9}m}{1.0nm}=1*10^{-9}m

Replacing values:

Ep=9*10^{9}\frac{N.m^{2}}{C^{2}}.\frac{(+1.6*10^{-19}C).(-1.6*10^{-19}C)}{1*10^{-9}m}

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5 0
3 years ago
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ICE Princess25 [194]

Answer:

The answer is conductor

Explanation:

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State and explain newton second law of motion also describe the concept of force, represent it quantiatively and derive the unit
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Explanation:

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8 0
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timurjin [86]
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