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3 years ago

What is meant by fundamental unit? write any two difference between mass and weight.

Physics

1 answer:

yulyashka [42]3 years ago

8 0

Answer:

Fundamental unit is any unit that is not dependent on other units and other units can be derived from them

Explanation:

Units such as Kilogram, Mass and Time are said to be fundamental units because they are independent.

Differences between Mass and weight;

1. Mass is the measure of the amount of matter in a body while weight is a measure of how the force of gravity acts upon that mass.

2. Mass is a scalar quantity while weight is a vector quantity

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2 years ago

What is the velocity of a proton that has been accelerated by a potential difference of 15 kV? (i)\:\:\:\:\:9.5\:\times\:10^5\:m

andre [41]

Answer:

Velocity of a proton, $v=1.7\times 10^6\ m/s$

Explanation:

It is given that,

Potential difference, $V=15\ kV=15\times 10^3\ V$

Let v is the velocity of a proton that has been accelerated by a potential difference of 15 kV.

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$\dfrac{1}{2}mv^2=qV$

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$v=\sqrt{\dfrac{2qV}{m}}$

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$v=1.69\times 10^6\ m/s$

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So, the velocity of a proton is $1.7\times 10^6\ m/s$ . Hence, this is the required solution.

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4 years ago

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What is meant by fundamental unit? write any two difference between mass and weight.​

What is meant by fundamental unit? write any two difference between mass and weight.