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Minchanka [31]
3 years ago
14

Look at pic for question pls help

Physics
1 answer:
pentagon [3]3 years ago
5 0

B IS YOUR ANSWER.

Soft sound has small amplitude and louder sound has large amplitude. Since, the second wave has large amplitude, it will have the loudest sound.

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Example of extensive property <br><br> Please fast
34kurt

Answer:

Mass and volume

Explanation:

3 0
2 years ago
A spring stores potential energy U0 when it is compressed a distance x0 from its uncompressed length.
beks73 [17]

Answer:

Explanation:

Using Hooke's law

Elastic potential energy = 1/2 K x²

K is elastic constant of the spring

x is the extension of the spring

a) The elastic potential energy when the spring is compressed twice as much  Uel = 1/2 k (2x₀) ² =  4 (1/2 kx₀²)= 4 U₀

b) when is compressed half as much Uel = 1/2 k \frac{x0}{4} ^{2} = \frac{1}{4} ( U₀)

c) make x₀ subject of the formula in the equation for elastic potential

      x₀ =\sqrt{\frac{2U0}{K}  }

x, the amount it will compressed to tore twice as much energy = \sqrt{\frac{2 (2U0)}{K} }

x = √2 x₀

d) x₁, the new length it must be compressed to store half as much energy = \sqrt{\frac{2 (\frac{1}{2})U0 }{K} }

x₁ = \sqrt{\frac{1}{2} } x₀

5 0
3 years ago
A cart is pushed on a frictionless floor with 29.6 Newtons of force along a distance of 5.9 meters in 8.1 seconds. How much powe
marta [7]

Answer:

Power = 21.6 Watts

Explanation:

Power = \frac{W}{t}

Where W = work and t = time.

W = Fs

Where F is force and s is displacement.

29.6N(5.9m) = 174.64J

W = 174.64J

Power = \frac{174.64J}{8.1s}

Power = 21.6 Watts

8 0
3 years ago
Does the North Pole receive more daylight hours during Winter or Summer?
MrMuchimi

Answer:

Summer begins in the Northern Hemisphere on June 20 or 21 when the North Pole is tilted a full 23.5° toward the sun. On this day, the Northern Hemisphere has the most hours of daylight, while the Southern Hemisphere has the least hours of daylight.

Explanation:

3 0
3 years ago
Read 2 more answers
A boy throws a ball vertically up. It returns to the
NikAS [45]

Answer:

31.25 m

25m/sec

Explanation:

Given :-

Time = 5sec

V = 0 (in going up)

U = 0 (in comming down)

Find :-

H and U by which it is thrown up

Since the total time is 5 sec ,therefore half time will be taken to go up and another half will be taken to go down .

We know that ,

V = U + gt

0 = U - 10*2.5

U = 25 m/sec

Also,

V² = U² +2gs

0 = 625 - 20s

s = 625/20 = 31.25 m

7 0
3 years ago
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