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3 years ago

Whu is it important to mave regular supervision of weights and measurements in the market

Physics

1 answer:

pentagon [3]3 years ago

5 0

Answer:

Hope the answer helped you. if yes pls follow me

Explanation:

the fundamental answer is without regular supervision of definition of weights and measures,commerce exchange will be impossible and there would be no market whatsoever for anything.

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3 years ago

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4 years ago

Suppose the acceleration of an elevator is 1/2 g upward, then what is the reading on the scale in the elevator.

Irina-Kira [14]

Answer:

c. 3/2 mg

Explanation:

Given that the acceleration of an elevator is 1/2 g upward.

The reading on the scale of the elevator is the net external force acting on the elevator.

Let the force F acting on the elevator as shown,

By using Newton's 2nd law, $F_{net}=ma$

where, $F_{net}$ is the net force acting on the elevator.

m is the mass of the elevator,

a is the acceleration of the elevator, as given a=1/2 g upward.

So, $F_{net}=m\times \frac 1 2 g$

$F-mg=m\times \frac 1 2 g \\\\F=mg+ \frac 1 2 mg \\\\F= \frac 3 2 mg.$

So, the reading on the scale in the elevator is $\frac 3 2 mg$ .

Hence, option (c) is correct.

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3 years ago

Whu is it important to mave regular supervision of weights and measurements in the market​

Whu is it important to mave regular supervision of weights and measurements in the market