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Alex787 [66]
3 years ago
8

You used 100 N of force to push a shopping cart 5m down the aisle in the grocery store. How much work did you do? *

Physics
2 answers:
ahrayia [7]3 years ago
6 0

Answer:

\boxed {\boxed {\sf 500 \ Joules}}

Explanation:

Work can be found by multiplying the force by the distance.

W=F*d

The force is 100 Newtons and the distance is 5 meters. Therefore,

F= 100 \ N \\d=  5 \ m

We can substitute the values into the formula.

W= 100 \ N * 5 \ m

Multiply.

W= 500 \ N*m

  • 1 Newton meter is equal to 1 Joule.
  • Thus, our answer of 500 Newton meters is equal to 500 Joules.

W= 500 \ J

You did <u>500 Joules </u>of work to push a shopping cart 5 meters with a force of 100 Newtons.

Art [367]3 years ago
4 0

Answer:

<h2><u>Given</u><u> </u><u>:</u><u>-</u></h2>
  • Force (F) = 100 N
  • Displacement (D) = 5 m
<h2><u>To </u><u>Find</u><u> </u><u>:</u><u>-</u></h2>

Work done

<h2><u>Solution</u><u> </u><u>:</u><u>-</u></h2>

As we know that Work done is the product of Force and displacement

\tt \: w = force \:  \times displacement

\tt \: w = 100 \times 5

\tt \: w = 500 \: j

Therefore, Work done is 500 Joule

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koban [17]

The question is not well presented.

There is  ______ shift in sound  frequency for observers towards  whom the source is approaching.

Answer:

The  gap should be filled with an apparent upward

Explanation:

The Doppler effect (also referred to as the Doppler shift) is the difference in frequency of a wave when related to an observer who has a relative movement to the wave source

The Doppler effect can be observed to occur with all types of waves - most notably water waves, sound waves, and light waves

The Doppler effect describes sound as an effect which is produced from a moving source of wave.

According to the Doppler effect;

When the source of waves in which there is an apparent upward shift in frequency for observers towards whom the source is approaching.

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4 years ago
In treatment the so called "nervous " disorder, freuad discovered the most effetive method to be
maks197457 [2]

Answer:

Freud believed that people could be cured by making conscious their unconscious thoughts and motivations, thus gaining insight. The aim of psychoanalysis therapy is to release repressed emotions and experiences, i.e., make the unconscious conscious.

Hope this helps. If it does, please mark me brainliest.

Explanation:

6 0
3 years ago
In a particular beam of radiation, which is traveling in a vacuum, the amounts of energy per second at an ultraviolet wavelength
Darina [25.2K]

Answer: d)

Explanation: In order to justify the answer we have to consider that the energy of photons directely depent on the frequency so the energy is inverselly dependent of the wavelegth.

If both beams have the same power, this means Energy/time so the number of photons per second must be different. As consequence a) is wrong as  b) since it is not posible since UV photon  have more energy that IR photons. c) It is no necessary know the frequency since the wavelength is related in the form:

c=λν  c is the speed of light, λ the wavelegth and ν the frequency.

d) Certainly will be more more IR photons than UV photons to get the same beam power.

8 0
3 years ago
The air around a pool and the water in the pool receive equal amounts of energy from the sun. Why does the air experience a grea
labwork [276]

Answer:

A

Explanation:

4 0
3 years ago
Suppose you wish to whirl a pail full of water in a vertical circle at a constant speed without spilling any of its contents (ev
Yanka [14]

Answer:

V = 2.87 m/s

Explanation:

The minimum speed required would be that at which the acceleration due to gravity is negated by the centrifugal force on the water.

Thus, we simply need to set the centripetal acceleration equal to gravity and solve for the speed V using the following equation:

Centripetal acceleration = V^2 / r

where r is the distance of water from the pivot or shoulder.

For our case, r will be 0.65 + 0.19 = 0.84 m

and solving the above equation we get:

9.81 = V^2 / 0.84

V^2 = 8.2404

V = 2.87 m/s

6 0
3 years ago
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