Calculate the man’s mass. (Use PE = m × g × h, where g = 9.8 N/kg.)A man climbs a wall that has a height of 8.4 meters and gains a potential energy of 4,620 joules. His mass is about
kilograms

Answers

Answer 1
Answer:

Answer:

mass=56.12kg

Explanation:

PE=mgh

4620=m×9.8×8.4

make msubject of the formula...

m =4620/(9.8×8.4)

m=4620/82.32

m=56.12kg


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Answers

Answer;

the potential difference

The magnitude of the electric current is directly proportional to the potential difference of the electric field

Explanation;

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What is the use if having a control condition in an investigation​

Answers

Answer:

Thus, including a control condition allows researchers to compare the way things are in the presence of an independent variable with the way things would have been in the absence of an independent variable.

Explanation:

Thus, including a control condition allows researchers to compare the way things are in the presence of an independent variable with the way things would have been in the absence of an independent variable.

The potential difference across wire is 75V and its electric resistance is 30Ω. Find out the electric current through the wire.

Answers

Answer:

current = 2.5A

Explanation:

We can use Ohm's law which states that V∝R so V=IR when the temperature is constant where V is the voltage (potential difference), I is the current and R is the resistance.

75= 30I

I= 75/30= 2.5A

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Answers

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Answers

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Answers

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