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3 years ago

How much potential energy does a 40n block medicine ball gain when it is lifted 5.m

2 answers:

5 0

By definition, the gain in PE (potential energy) is
ΔPE = m*g*h

Given:
mg = 40 N (Note that m*g = weight)
h = 5 m

ΔPE = (40 N)*(5 m) =200 J

Answer: 200 J

Ksivusya [100]3 years ago

5 0

The answer is 200J I hope it helps ^_^

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If a body with a mass of 4 kg is moved by a force of 20 N, what is the rate of its acceleration?

valentina_108 [34]

Explanation:

F = ma

20 N = (4 kg) a

a = 5 m/s²

8 0

3 years ago

A standard for comparison that helps to ensure that the experimental result is caused by the condition being tested is the ____.

kvasek [131]

A standard for comparison that helps to ensure that the experimental result is caused by the condition being tested is the control.

<u>Explanation:</u>

In an experiment, we need to use a reference or standard term with which we compare our obtained results for better accuracy and precision. So there will several conditions or boundary conditions that need to include in those experiments to prevent the experiment from having a fallback or repair.

Among these several conditions, some of the conditions are mostly given to compare with the conditions occurred during the running of the experiment. And if any case, there is any change in those conditions with respect to standard conditions during the running of the experiment, then the experiment should be stopped.

So, these conditions which are standard comparison and helps to ensure that the experimental result is caused by the condition being tested and not anything else is termed as control.

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4 years ago

What volume of air containing 21% of oxygen (by volume) is required to completely burn 10g of sulphur which has a purity level o

coldgirl [10]

Answer:

try using google mabey that might help

8 0

4 years ago

A circuit has a voltage drop of 54.0 V across a 30.0 o resistor that carries a current of 1.80 A. What is the power used by the

Blizzard [7]

Answer:

P = 97.2 W

Explanation:

Given that,

Voltage drop, V = 54 V

The resistance of the resistor, R = 20 Ohms

Current, I = 1.8 A

We need to find the power used by the resistor. The formula used to find the power is given by :

P = VI

Putting all the values,

P = 54 V × 1.8 A

P = 97.2 W

So, the power used by the resistor is 97.2 W.

5 0

3 years ago

Read 2 more answers

a student is pushing a 50 kilogram cart with a force of 500 newtons another students measures the speed of the cart and finds th

Irina-Kira [14]

The force of friction is 300 N

Explanation:

We can solve the problem by applying Newton's second law of motion: in fact, the net force acting on an object is equal to the product between the mass of the object and its acceleration. So we can write

$\sum F = ma$