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Vlad1618 [11]
3 years ago
9

Question 3 of 10

Physics
1 answer:
Mazyrski [523]3 years ago
3 0

Answer:

B . energy cannot be created or destroyed

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The friction of the water on a boat produces an acceleration of -10 m/s2. If the
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Answer:2.5s

Explanation:

Idk I guessed and got it right

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H e l p.. I have no idea what any of this is, what is the first step of the hydrogen fusion process
klasskru [66]
The answer to this question is the first choice. In the hydrogen fusion process, the first step involves the collision of two protons to emit an antielectron and a neutrino. Only the first choice of
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reflects this process. A hydrogen ion with a mass of one and number protons of 1 means a proton.
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3 years ago
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a person when asked to speak up,increases her sound level from 30dB to 60dB.The amount of power per unit area increased by? a)30
aivan3 [116]

Answer:

d) 1000 times

Explanation:

As we know that difference of sound level is given as

L_2 - L_1 = 10 Log \frac{I_2}{I_1}

so here we need to find the ratio of two intensity

it is given as

Log\frac{I_2}{I_1} = \frac{(L_2- L_1)}{10}

Log\frac{I_2}{I_1} = \frac{60 - 30}{10}

Log\frac{I_2}{I_1} = 3

now we have

\frac{I_2}{I_1} = 10^3

so it is

d) 1000 times

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3 years ago
The yellow star has much less mass the blue star and so who will live longer
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The yellow star will live longer as it has less mass

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A tightrope walker more easily balances on a tightwire if his pole
cestrela7 [59]
B) droops.

Why?
To maintain balance, you do not need something short so you're balanced well... You need something long and droopy to maintain balance. The pole should be held by your waist and it should be light.

Hope this helps!~
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3 years ago
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