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AnnZ [28]
3 years ago
10

It is easier to push an empty shopping cart than a full one, because the full shopping cart has more mass than the empty one. Th

is means that more force is required to push the full shopping cart -- is an example of which law?
1st
2nd
3rd
Physics
1 answer:
Katarina [22]3 years ago
5 0

Answer:

i think its the 2nd law

Explanation:

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A student calculates the density of a copper cube to be 4.15 g/cm . If the accepted value is 8.64 g/cm the percentage error in h
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 The percentage error in his experimental value is -51.97%.

<h3>What is percentage error?</h3>

This is the ratio of the error to the actual measurement, expressed in percentage.

To calculate the percentage error of the student, we use the formula below.

Formula:

  • Error(%) = (calculated value-accepted value)100/(accepted............. Equation 1

From the question,

Given:

  • Calculated value = 4.15 g/cm
  • accepted value = 8.64 g/cm

Substitute these values into equation 1

  • Error(%) = (4.15-8.64)100/8.64
  • Error(%) = -4.49(100)/8.64
  • Error(%) = -449/8.64
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Hence, The percentage error in his experimental value is -51.97%.

Learn more percentage error here: brainly.com/question/5493941

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3 years ago
Using a diagram explain how acceleration can be obtained from a velocity time graph​
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Answer:

For any v-t graph the acceleration is the slope of the graph. For average acceleration in a time period ‘t’ consider the change in velocity in time t and divide it by the time t. For instantaneous acceleration you need to go into the realm of differential calculus.

Explanation:

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4 years ago
Why unit of pascal is called derived unit?​
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Answer:

This is because it is derived from newtons and metres as shown in the expression;

Explanation:

pressure =  \frac{force}{area} \\  P= \frac{F}{A}  \\ P= \frac{newtons}{ {m}^{2} }  \\  = pascals

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So we have mass which = 12.0

And acceleration = 27.0

So the force = (12)(27)

F = 324 N

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