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myrzilka [38]
2 years ago
10

Brainliest if correct

Physics
1 answer:
Bad White [126]2 years ago
6 0

Answer:

D: Increase the distance between the objects.

E: Decrease the mass of one of the objects.

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How much time would it take for the sound of thunder to travel 1,500 meters if sound travels at a speed of 330 m/sec?
Fittoniya [83]

(1,500 meters) x (1 sec / 330 meters) = (4 and 18/33) seconds

                                                                 (4.55 sec, rounded)

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3 years ago
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At what point on the position-time graph shown is the object's instantaneous velocity greatest?
ioda

I'm probably going to have to say C. E as it seems the steepest right around there. If I'm wrong on that, it has to be B. B

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A bungee cord with a spring constant of 800 stretches 6 meters at its greatest displacement. How much elastic potential energy d
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here we know that

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Now using above formula we have

U = \frac{1}{2}(800)(6^2)

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4 0
3 years ago
Ac soucre change it polarity how many time
Karolina [17]
Alternating current (AC) flows half the time in one direction and half the time in the other, changing its polarity 120 times per second with 60-hertz current.
6 0
3 years ago
A 41.0 g marble moving at 2.30 m/s strikes a 25.0 g marble at rest. What is the speed of each marble immediately after the colli
Gre4nikov [31]

Answer:

speed of each marble after collision will be 1.728 m/sec

Explanation:

We have given mass of the marble m_1=41gram=0.041kg

Velocity of marble v_1=2.30m/sec

Its collides with other marble of mass 25 gram

So mass of other marble m_2=25gram=0.025kg

Second marble is at so v_2=0m/sec

We have to find the velocity of second marble

From momentum conservation we know that

m_1v_1+m_2v_2=(m_!+m_2)v, here v is common velocity of both marble after collision

So 0.041\times 2.30+0.025\times 0=(0.041+0.025)v

v = 1.428 m /sec

So speed of each marble after collision will be 1.728 m/sec

6 0
3 years ago
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