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Sonja [21]
3 years ago
7

Which is a good example of a contact force?

Physics
2 answers:
lions [1.4K]3 years ago
7 0
A ball hitting a ball so D
zaharov [31]3 years ago
5 0

Answer:

The answer is D

Explanation:

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In general, how did the water pressure in the tank change when mass was added to the fluid?
MissTica

Answer:

As the height increases the pressure must increase.

Explanation:

When we add masses to the fluid, the amount of fluid in the tank increases, therefore its height increases and the pressure is described by the expression

           P = ρ g h

where rho is constant for a given fluid and h is the height measured from the surface of the fluid.

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When have you experienced an increase in kinetic<br> energy within a system?
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If a man starts running on a boat with an acceleration a with respect to the boat, there is no external force that acts on the Boat+Man system

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2 years ago
Calculate the speed of a car that travels a distance of 2.4km in 2 minutes ​
hammer [34]

Answer:

72 kilometres per hour

Explanation:

The formula for calculating speed is distance/time.

So to work this out you would convert 2 minutes into hours. You would divide 2 by 60 to convert it into hours. This is because the standard unit for speed with kilometres is kilometres per hour. Then  you would divide 2.4 by that.

1)Divide 2 by 60:

2/60=0.0333333

2) Divide 2.4 by 0.0333333.

2.4/0.0333333=72.00007

3) Round it.

72km/h

3 0
3 years ago
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