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tatiyna
3 years ago
10

PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!!

Physics
1 answer:
Charra [1.4K]3 years ago
8 0

Power = Work / time

The work given here is 83J and the time it took to do 83J of work was 3s

So..

Power = 83J / 3s

Power = 27.67 W or 27.7 W

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If you push a chair across the floor at a constant velocity, how does the force of friction compare with the force you exert? ex
patriot [66]
If the velocity of the chair is constant, then the net force acting on it is zero.

The force you exert to keep it going is equal and opposite to the force of friction.
6 0
2 years ago
Dont know whether its b or c. (cuz for sure it transports energy)
masha68 [24]

Sound waves are a type of classical waves and so they transport only energy without transporting matter through the medium.

6 0
2 years ago
A 48-volt source is required to furnish 192 watts to a parallel circuit consisting of three resistors of equal value. What is th
dem82 [27]

Answer:

36 Ω

Explanation:

Since the 3 resistors are connected in parallel.

The combined resistance of the resistor is

1/Rc = 1/R + 1/R + 1/R ...................... Equation 1

Where Rc = combined resistance of the three resistor, R1 = Resistance of each of the resistor

Rc = R/3 ....................... Equation 2

The formula of power is given as

P = V²/Rc

Rc = V²/P ................ Equation 3

Where V = Voltage, R =  Combined Resistance, P = power.

Given: V = 48 V, 192 W.

Substitute into equation 3

Rc = 48²/192

Rc = 12 Ω

From equation 2

Rc = R/3

R = 3Rc

Where Rc = 12 Ω

R = 3×12

R = 36 Ω

Hence the resistance on each resistor = 36 Ω

4 0
3 years ago
Identfy the parts of he atom that are labeied in the
Black_prince [1.1K]

Answer :

Label A - nucleus.

Label B- electron cloud.

Explanation :

An atom is the smallest unit of a matter that consist of three subatomic particles which are electrons, protons and neutrons.

The protons and the neutrons are located inside the nucleus or the center of the nucleus where the mass of the an atom is concentrated.

The electrons are located around the nucleus.

The protons are positively charged, the electrons are negatively charged and the neutrons are neutral that means it has no charge.

In the picture, label A shows the nucleus.

Electrons has the ability to revolve around the nucleus in a fixed circular orbit. Electron cloud represents the spreading of the electrons energy.

In the picture, label B shows the electron cloud.

Hence, the label A - nucleus and label B- electron cloud.

3 0
3 years ago
A hamster running on a wheel generated 180 J of work, but the hamster's power was only 10 W. How long did it take for the hamste
Yuri [45]

Answer:

18s

Explanation:

Given parameters:

Work done by hamster = 180J

Power of hamster  = 10W

Uknown:

Time taken for the hamster to generate the work  = ?

Solution:

Power can be defined as the rate at which work is being done by a body. It is related to both work done and time by the expression below;

         Power  = \frac{Work done}{Time taken}

    Time taken  = \frac{Work done }{Power}

     Time taken  = \frac{180}{10}    = 18s

5 0
3 years ago
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