2 years ago

PLEASE HELP !!! I NEED TO PASS

Physics

1 answer:

zhannawk [14.2K]2 years ago

7 0

Answer:

Sorry I don't know the answer .Hope other help you.sorryyyyyyyy

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Halp me please i will give brainly

Delicious77 [7]

Answer: It should be the 3rd option down!

Explanation:

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2 years ago

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What is the only bone of the skull that moves?

Darina [25.2K]

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Mandible.

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The mandible in the bone that allows you to open and close your mouth, otherwise known ad the jawbone.

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Assuming all object are moving with the same velocity, witch statement describes the object with the largest intertia?

Kisachek [45]

Answer:

Mass is the quantitative measure of inertia of any object.

Explanation:

The object that have largest mass will have largest inertia as well as largest momentum.

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2 years ago

The 8 kg block is then released and accelerates to the right, toward the 2 kg block. The surface is rough and the coefficient of

natita [175]

Answer:

3.258 m/s

Explanation:

k = Spring constant = 263 N/m (Assumed, as it is not given)

x = Displacement of spring = 0.7 m (Assumed, as it is not given)

$\mu$ = Coefficient of friction = 0.4

Energy stored in spring is given by

$U=\dfrac{1}{2}kx^2\\\Rightarrow U=\dfrac{1}{2}\times 263\times 0.7^2\\\Rightarrow U=64.435\ J$

As the energy in the system is conserved we have

$\dfrac{1}{2}mv^2=U-\mu mgx\\\Rightarrow v=\sqrt{2\dfrac{U-\mu mgx}{m}}\\\Rightarrow v=\sqrt{2\dfrac{64.435-0.4\times 8\times 9.81\times 0.7}{8}}\\\Rightarrow v=3.258\ m/s$

The speed of the 8 kg block just before collision is 3.258 m/s

7 0

2 years ago

Could anyone can help me for this question I don’t understand how I can do?!! Please it really important!!

stiv31 [10]

Im sry i cant help u

6 0

3 years ago