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brilliants [131]
3 years ago
12

A girl weighing 500 Newton’s climbs 40 m vertically when walking up the stairs.what How much work does she do against gravity

Physics
1 answer:
densk [106]3 years ago
6 0

Answer:

you first convert 40m to cm to 4000cm then W=Fxd 500x4000

therefore W=2,000000J.

Explanation:

this is the correct answer.

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A boy throws a ball upward with a velocity of 4.50 m/s at 60.0o. What is the maximum height reached by the ball?
Cloud [144]

Answer:

3.1m

Explanation:

Since we only care about the y direction we only need to find vy. Once u draw your vector you will realize that vy= 4.5sin60=3.897m/s.

use vf²=v²+2a(y)

At the maximum height the velocity is 0 and since the object is in freefall, a=-g

Plug in all values

0=15.1875-2*9.8(y)

solve for y

-15.1875*2/-9.8=y

y=3.1m

3 0
3 years ago
Read 2 more answers
High pitched sounds have relatively large ___ and small ___
Mashutka [201]
High Pitch sounds have relativity large frequency and small wavelength
8 0
4 years ago
when hard stabilization structures such as groins are used to stabilize a shoreline, the change in the longshore current results
Nikitich [7]

When hard stabilization structures such as groins are used to stabilize a shoreline, the change in the longshore current results <u>deposition of sediment. </u>

On the upcurrent side of the barrier, sediment is deposited as the longshore current slows.

What is Hard stabilization?

  • Hard stabilization is the prevention of erosion through the use of artificial barriers.
  • Other hard stabilization structures, such as breakwaters and seawalls, are built parallel to the beach to protect the coast from the force of waves.
  • Hard stabilization structures, such as groins, are built at right angles to the shore to prevent the movement of sand down the coast and maintain the beach.
  • These constructions are made to last for many years, but because they detract from the visual splendor of the beach, they are not always the ideal answer.
  • Additionally, they affect the habitats and breeding sites of native shoreline species, interfering with the ecosystem's natural processes.

Learn more about the Hard stabilization with the help of the given link:

brainly.com/question/16022736

#SPJ4

4 0
2 years ago
A student exerts a force of 35 newtons to move a cart loaded with lab equipment to the prep room 20 meters. If it takes the stud
hram777 [196]

Answer:

option D

Explanation:

Power = work divided by time

and Work is equal to force multiplied by displacement

therefore power =\frac{35 \times 20}{10}  = 70

please mark me brainliest and 5 star

8 0
3 years ago
Explicitly solve the Heisenberg equations of motion to find the time–dependent raising and lowering (creation and annihilation)
Sedaia [141]

Answer:

see detailed solution attached.

Explanation:

3 0
3 years ago
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