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miskamm [114]
3 years ago
13

(this is a question from my leap practice)

Physics
1 answer:
ki77a [65]3 years ago
4 0
The answer is C. in sort of a way. You can't technically see black matter. However, it is holding the galaxies together.
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victus00 [196]

Answer:

» e. Electrons and protons

Explaination :

Electrons are negatively charged and protons are positively charged.

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5 0
2 years ago
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A steel ball bearing is released from a height H and
ArbitrLikvidat [17]

Answer:

ELASTIC collision

kinetic energy is conservate

Explanation:

As the ball bounces to the same height, it can be stated that the impact with the floor is ELASTIC.

As the floor does not move the conservation of the moment

            po = pf

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- v1 = v2

So the speed with which it descends is equal to the speed with which it rises

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3 years ago
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diamong [38]

Answer:

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2 years ago
The transverse standing wave on a string fixed at both ends is vibrating at its fundamental frequency of 250 Hz. What would be t
hodyreva [135]

Answer:

Explanation:

fundamental frequency, f = 250 Hz

Let T be the tension in the string and length of the string is l ans m be the mass of the string initially.

the formula for the frequency is given by

f=\frac{1}{2l}\sqrt{\frac{Tl}{m}}    .... (1)

Now the length is doubled ans the tension is four times but the mass remains same.

let the frequency is f'

f'=\frac{1}{2\times 2l}\sqrt{\frac{4T\times 2l}{m}}    .... (2)

Divide equation (2) by equation (1)

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3 years ago
Do Planets with more mass have more gravity than planets with less mass
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Here you go it was too long to type

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