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zhuklara [117]
3 years ago
15

E

Physics
1 answer:
kvasek [131]3 years ago
4 0

Answer:

by preventing flooding, creating reservoirs, and providing water for irrigation

Dams and waterways store and provide water for irrigation so farmers can use the water for growing crops. This idea goes way back into history. Irrigation is an important part of using water. In areas where water and rain are not abundant (like the desert), irrigation canals from rivers and dams are used to carry water.

Dams help in preventing floods. They catch extra water so that it doesn’t run wild downstream. Dam operators can let water out through the dam when needed.

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Q: A: The long distance water movement, from roots up to leaves, of the water transport in large plants depends on one unique pr
ICE Princess25 [194]
Answer: B

Cohesion makes water stick together, which is vital in transporting nutrients from tree roots to other parts of the plant.
4 0
3 years ago
Read 2 more answers
For your senior project, you would like to build a cyclotron that will accelerate protons to 10% of the speed of light. The larg
DIA [1.3K]

The given question is incomplete. The complete question is as follows.

For your senior project, you would like to build a cyclotron that will accelerate protons to 10% of the speed of light. The largest vacuum chamber you can find is 60 cm in diameter.

What magnetic field strength will you need?

Explanation:

Formula for the strength of magnetic field is as follows.

      B = \frac{mv}{qr}

Here,    m = mass of proton = 1.67 \times 10^{-27} kg

      v = velocity = 10% of 3 \times 10^{8} = 3 \times 10^{7} m/s

      q = charge of proton = 1.6 \times 10^{-19} C

      r = radius = \frac{60}{2} = 30 cm = 0.30 m   (as 1 m = 100 cm)

Therefore, magnetic field will be calculated as follows.

            B = \frac{mv}{qr}

               = \frac{1.67 \times 10^{-27} \times 3 \times 10^{7}}{1.6 \times 10^{-19} C \times 0.30 m}

               = \frac{5.01 \times 10^{-20}}{0.48 \times 10^{-19}}

               = 1.0437 T

Thus, we can conclude that magnetic field strength is 1.0437 T.

7 0
4 years ago
You operate a 120 w light bulb for 5 minutes. how much energy did you use?
timurjin [86]

Answer:

Energy use by bulb = 36 kJ

Explanation:

Power of bulb = 120 W

Time of working = 5 minutes =5 x 60 = 300 seconds.

Power = Work / Time

Work = Power x Time

          = 120 x 300

          = 36000 J = 36 kJ

So. energy use by bulb = 36 kJ

3 0
3 years ago
Pushing on the pump of a soap dispenser compresses a small spring. When the spring is compressed 0.48 cm, its potential energy i
nlexa [21]
I sincerely do not know the formula but using normal maths i got 1.71cm
7 0
3 years ago
A bicycle wheel is mounted on a fixed, frictionless axle, with a light string wound around its rim. The wheel has moment of iner
Stells [14]

Answer:

x3

Explanation:

trying to find the inetria magnitude of the wheel

3 0
3 years ago
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