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Leya [2.2K]
4 years ago
14

When describing how power and work are similar you would want to mention that a you must know time to determine both work and po

wer. b you must know force in order determine both workand power. c you must know energy in order to determine both work and power. d you must know velocity to determine both work and power?
Physics
2 answers:
Roman55 [17]4 years ago
5 0
The answer that would best complete the given statement above would be option B. When describing how power and work are similar you would want to mention that <span>you must know force in order determine both work and power. Hope this answers your question. Have a great day!</span>
devlian [24]4 years ago
4 0

Answer:

You must know force in order determine both work and power.

Explanation:

Work done is defined as the product of the force and the displacement. Mathematically, it can be written as :

W = F × d

W=Fdcos\ \theta

\theta is the angle between the force and the displacement.

The power of an object is defined as the rate at which the work is done. It can be written as:

P=\dfrac{W}{t}

here w is the work done and t is the time taken.

So, in order to determine both power and the work the applied force must be a known quantity.

Hence, the correct option is (b) " you must know force in order determine both work and power ".

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During metamorphism, what is the major effect of chemically active fluids?
xz_007 [3.2K]

Answer:

Option b

Explanation:

Metamorphism is the process where the variation of the geological texture resulting from the different arrangement of the minerals or the variation of minerals in protoliths, i.e., pre- existing rocks take place such that there occurs no change in state of the protolith, i.e., it does not melt into magma.

The change takes place as a result of the presence of chemically active fluids, heat and pressure.

There is a reaction between the chemically active fluid and the rock through which it passes and promotes the movement of the dissolved ions of silicate and promotes the growth of the mineral grains.

7 0
3 years ago
if the current in a wire is 2.0 amperes and the potential difference across the wire is 10 volts what is the resistance of the w
Pavlova-9 [17]

Answer:

R = 2Ω

Explanation:

Potential difference (V) = current (I) * Resistance (R)

V = IR

I = 2.0A

V = 10v

R = ?

V = IR

R = V / I

R = 10 / 2

R = 2Ω

The resistance across the wire is 2Ω

3 0
3 years ago
Read 2 more answers
What is a limited resource?
Artemon [7]
Something that there is only so many of or not enough of
7 0
3 years ago
Read 2 more answers
A surveyor is using a magnetic compass 5.6 m below a power line in which there is a steady current of 140 A. (a) What is the mag
ArbitrLikvidat [17]

Answer:

(a) B = 5.6 micro Tesla

Explanation:

Current in the wire, i = 140 A

distance, r = 5 m

The formula for the magnetic field at a distance r due to the current carrying wire

B=\frac{\mu _{0}}{4\pi }\times \frac{2i}{r}

B=10^{-7}\times \frac{2\times140}{5}

B = 5.6 x 10^-6 Tesla

B = 5.6 micro Tesla

(b) As the magnetic field of earth at this site is 20 micro tesla so the magnetic field due to current carrying wire interfere the magnetic compass.

4 0
3 years ago
The thermal energy in a heat engine is used to move a piston. Which best describes why this is possible?
Natali [406]

Answer:

The increase in thermal energy results in an increase in pressure.

Explanation:

  • The increase in entropy is directly related to the increase in temperature. So the thermal energy in heat engine increases the temperature of that surrounding.
  • Higher temperature means the kinetic energy of particles is also higher, their vibration is increasing. So it increases the pressure (ideal gas law).
  • In this way the increment in the thermal energy in heat engine moves piston by increasing the pressure.
6 0
3 years ago
Read 2 more answers
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