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slava [35]
3 years ago
5

Use pascal and pressure in the same sentence

Physics
1 answer:
kozerog [31]3 years ago
8 0
The unit of pressure is the Pascal (Pa), equivalent to \frac{\text{kg}}{\text{ms}^{2}}.
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A worker pushes a box with a horizontal force of 40.0 N over a level distance of 4.0 m. If a frictional force of 27 N acts on th
Lorico [155]

Work = (force) x (distance)

The worker does  (40N) x (4m) = 160 joules of work.

Friction eats up    (27N) x (4m) = 108 joules of that energy,
                                                         generating 108  joules of heat.                         

The remaining    (160J - 108J) = 52 joules of energy moves the box.

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The ph balance is maintained by which organ?
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The Kidneys And Lungs.
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What properties are those that describe what happens when a substance reacts with another substance?
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Chemical properties due to the changes in both
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A rock is dropped from a bridge what happens to the magnitude of the acceleration
White raven [17]

Answer:

9.81 m/s² constant

Explanation:

Any object which is falling has only the acceleration due to gravity acting on it. The value of acceleration due to gravity is 9.81 m/s² which is constant. This is the case if air resistance is not taken into consideration.

The air resistance is a result of the surface area of the object which is falling. This will slow down the object and the velocity reached is called the terminal velocity.

3 0
3 years ago
A voltmeter with resistance RV is connected across the terminals of a battery of emf and internal resistance r. Find the potenti
makvit [3.9K]

Answer:

voltage measured by the voltmeter = (E × RV)/(r + RV)

Explanation:

The circuit diagram for this description is presented in the attached image.

The internal resistance of an emf source is modelled to be in series with the source.

Therefore, the end product is a circuit with the battery in series connection with the internal resistance and resistance of the volunteer. The voltage picked up by the volunteer is the voltage across resistor RV.

Total resistance in the circuit = (r + RV) ohms (since both resistors are in parallel)

Current produced by the emf source = E/(Total resistance) = E/(r + RV)

The voltage across resistor RV = current flowing through this resistor × its resistance.

Since all the circuit elements are in series with each other, same current, E/(r + RV) flows through them all

Voltage across RV = voltage measured by the voltmeter = [E/(r + RV)] × RV = (E × RV)/(r + RV) = (E.RV)/(r + RV)

4 0
3 years ago
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