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Dmitrij [34]
3 years ago
9

PLEASE HELPPPPP I WILL GIVE POINTS AND BRAINIEST

Physics
2 answers:
Elza [17]3 years ago
5 0
I agree^ fjidnsnwjskocucuhrebnaosicuej
UNO [17]3 years ago
3 0

Answer:

Graph A

Explanation:

I hope this is right

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What is the most power in watts the ear can receive before the listener feels pain?
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The softest sound a human ear can hear is at 0dB. Sounds above 130dB causes pain.
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Which of the following statements is not supported by the plate tectonic theory?
evablogger [386]
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8 0
3 years ago
Someone pls answer this
andriy [413]

Answer:

<em>The speed of metal block B is 5 m/s after the collision</em>

Explanation:

<u>Law Of Conservation Of Linear Momentum </u>

The total momentum of a system of bodies is conserved unless an external force is applied to it. The formula for the momentum of a body with mass m and velocity v is  

P=mv.  

If we have a system of bodies, then the total momentum is the sum of them all

P=m_1v_1+m_2v_2+...+m_nv_n

If some collision occurs, the velocities change to v' and the final momentum is:

P'=m_1v'_1+m_2v'_2+...+m_nv'_n

In a system of two masses, we have:

m_1v_1+m_2v_2=m_1v'_1+m_2v'_2

The metal block A has a mass of m1=3.2 Kg and moves at v1=4 m/s. Metal block b has a mass of m2=1.6 Kg and is initially at rest v2=0.

After the collision occurs, block A moves at v1'=1.5 m/s. We need to calculate the speed of the metal block B. Solving for v2':

\displaystyle v'_2=\frac{m_1v_1+m_2v_2-m_1v'_1}{m_2}

Substituting the given values:

\displaystyle v'_2=\frac{3.2*4+1.6*0-3.2*1.5}{1.6}

\displaystyle v'_2=\frac{8}{1.6}

\displaystyle v'_2=5\ m/s

The speed of metal block B is 5 m/s after the collision

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3 years ago
If a triangle is a right triangle, then the other two angles must be acute. true or false
skelet666 [1.2K]
That depends on which angle you picked first, because that determines
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If you picked the right angle (90°) first, before you asked the question,
then the other two are acute angles, and they're also complementary
5 0
3 years ago
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