3 years ago

Can someone please help me answer these questions

1 answer:

4 0

Answer:

the First one i think is D: it increases

The second i think it is B

i think

Explanation:

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ryzh [129]

I think the answer is B

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sveticcg [70]

70x(50-30) = W x (90-50)
1400 = W x 40
W = 35N

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uysha [10]

It will have 100 radioactive particles.

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zlopas [31]

We know

$\\ \sf\longmapsto a=\dfrac{dv}{dt}$

$\\ \sf\longmapsto a=\dfrac{dv}{dx}.\dfrac{dx}{dt}$

$\\ \sf\longmapsto a=v\dfrac{dv}{dx}$

$\\ \sf\longmapsto adx=vdv$

$\\ \sf\longmapsto a{\displaystyle{\int}^x_{x_0}}dx=\displaystyle{\int}_u^v vdv$

$\\ \sf\longmapsto a(x-x_0)=\dfrac{v^2-u^2}{2}$

Here

$\\ \sf\longmapsto v^2-u^2=2as$

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kati45 [8]

Most objects move at a constant speed because of friction and acceleration. The constant speed keeps them in place, and keeps a balance.

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