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3 years ago

If there is 8 g of a substance before a physical change, how much will there be afterwards?

1 answer:

galina1969 [7]3 years ago

8 0

According to the law of conversion of mass, the mass of a closed system is neither made or taken away in a physical change. It is the same for a chemical change as well.

Therefore, the mass of the substance remains 8g.

Best of Luck!

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3 years ago

Assume that the loop is initially positioned at θ=30∘θ=30∘ and the current flowing into the loop is 0.500 AA . If the magnitude

labwork [276]

Answer: $\tau=1.03\times 10^{-4}\ N-m$

Torque,

Explanation:

Given that,

The loop is positioned at an angle of 30 degrees.

Current in the loop, I = 0.5 A

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We need to find the net torque about the vertical axis of the current loop due to the interaction of the current with the magnetic field. We know that the torque is given by :

$\tau=NIAB\ \sin\theta$

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$\tau=1\times 0.5\ A\times 0.0008\ m^2\times 0.3\ T\ \sin(60)\\\\\tau=1.03\times 10^{-4}\ N-m$

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3 years ago

A hang glider moves through the air. Does the hang glider have

kifflom [539]

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3 years ago

A 65 kg cart travels at a constant speed of 4.6 m/s. What is its kinetic energy?

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Answer:

Explanation:

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hope it helps :)

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