3 years ago

Plzzzzzzzzzzzzzzzzzzz help me in these 3 questions plzzzzzzzzzzzzzzzzz ASAP!!

Physics

1 answer:

lana [24]3 years ago

3 0

A infared light has a higher

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Define the law of universal gravitation in your own words.

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Newton's law of universal gravitation states that a particle attracts every other particle in the universe using a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers

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A toaster draws 8 A of current with a voltage of 120 V. Which is the power used by the toaster?

dexar [7]

$U=120 \text{ V}\\
I=8\text{ A}\\
P=U\cdot I\\\\
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3 years ago

If measurements of gas are 75 L and 300 kIlopascals and then the gas is measured is second time and found to be 50 L, describe w

Ann [662]

Answer:

The pressure must have increased in the process

Explanation:

The State Equation for gasses reads: $P*V=n*R*T$

where P is the gas' pressure, V its volume, n the number of moles of gas, R the gas constant and T the temperature in degrees Kelvin.

If the temperature of the gas doesn't change in the described process, the right hand side of the equation stays the same. If that is the case, given that when the Volume of the gas diminishes from 75 liters to 50 liters, then the pressure must have increased to keep that product "P * V" constant:

$P_i*V_i=P_f*V_f\\75 *300=50*X\\X=\frac{75*300}{50} =450$

So the pressure must have gone up to 450 kilopascals.

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3 years ago

If a person weighs 600N on earth, how much does he weigh on the moon

Snezhnost [94]

Answer:

His weight would be 100 N

Explanation:

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