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romanna [79]
3 years ago
6

A procedure called______is used to find the volume of a rock

Physics
2 answers:
KengaRu [80]3 years ago
8 0

Displacement is usually how the messure the rock

Zina [86]3 years ago
6 0

"displacement" is the method generally used to find the volume of irregularly shaped (solid) objects, this including rocks!

Hope this helped!

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The voltage of electricity traveling away from a power plant is very high. How high may it be? Why is the voltage so high?
sashaice [31]
- The voltage travelling away from a power plant through transmission lines is very high, and it is typically of hundreds of kilovolts (typical values are between 138 kV and 765 kV).

- The main reason to use these high values of voltage is to reduce power dissipation.
In fact, the cables that are used to transmit electricity have a certain resistance R which is fixed. The power generated from the power plant and that should be transmitted through the lines is P, and it is also fixed. 
The power dissipated through the cables is calculated as
P_{diss}=I^2 R =  (\frac{P}{V} )^2 R
where I is the current and V the voltage.
As it  can be seen, using higher voltages reduce the amount of power dissipated through the lines (while using higher currents will have the opposite effect).
8 0
3 years ago
A process generates 250 watts of useful energy and 600 watts of waste energy. WhT is the efficiency of the process?
Cloud [144]

The efficiency of the process is 42%

From the question given above, the following data were obtained:

Useful energy = 250 watt

Wasteful energy = 600 watt

<h3>Efficiency =? </h3>

The efficiency of the process can be obtained as illustrated below:

efficiency \:  =  \frac{useful \: energy}{wasteful \: energy}  \times 100 \\  \\ efficiency \:  =  \frac{250}{600}  \times 100 \\

<h3>Efficiency = 42%</h3>

Therefore, the efficiency of the process is 42%

Learn more: brainly.com/question/2300041

3 0
2 years ago
A 6157 N piano is to be pushed up a(n) 2.41 m frictionless plank that makes an angle of 21.9 ◦ with the horizontal. Calculate th
xz_007 [3.2K]

Answer:

Work done, W = 5534.53 J

Explanation:

It is given that,

Force acting on the piano, F = 6157 N

It is pushed up a distance of 2.41 m friction less plank.

Let W is the work done in sliding the piano up the plank at a slow constant rate. It is given by :

W=Fd\ sin\theta

Since, F=F\ sin\theta (in vertical direction)

W=6157\times 2.41\ sin(21.9)

W = 5534.53 J

So, the work done in sliding the piano up the plank is 5534.53 J. Hence, this is the required solution.

3 0
3 years ago
A force of 19 newtons is applied on a cart of 2 kilograms, and it experiences a frictional force of 1.7 newtons. What is the acc
amid [387]
A= f/m

a= 19/2

a= 9.5m/s^2
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3 years ago
Calculate the inhomogeneity of a 1.5 t magnet
Ludmilka [50]
Need more answer choices
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3 years ago
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