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3 years ago

Use the linear equation, y = mx + b and solve for B (the y-intercept).

Physics

1 answer:

Korolek [52]3 years ago

3 0

Answer:

$b=-\frac{141}{13}$

Explanation:

Given the following question:

$y=mx+b$

In order to find the answer, we substitute the given information into the slope intercept then solve for b.

$y=mx+b$
$m=\frac{-9}{-13}$
$y=-6$
$x=7$
$(7,6)=(x1,y1)$

<u>Substitute:</u>
$-6=\frac{-9}{-13} (7)+b$
$\frac{-9}{-13} \times\frac{7}{1} =\frac{63}{13}$
$\frac{63}{13}+b=6$
$\frac{63}{13} -\frac{63}{13} =0$
$6-\frac{63}{13} =-\frac{141}{13}$
$b=-\frac{141}{13}$

Hope this helps.

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jeka57 [31]

Answer:

The answer is below

Explanation:

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b) the mass moment of inertia about z axis passing the rotation center O is:

$I_G=\frac{1}{12}*3(0.8)(0.8)^2+ 3(0.8)(0.888)^2-\frac{1}{2}*(12)(\pi)(0.1)^2(0.1)^2 -(12)(\pi)(0.1)^2(1.8-\\0.888)^2+\frac{1}{2}*(12)(\pi)(0.3)^2(0.3)^2 +(12)(\pi)(0.3)^2(1.8-0.888)^2+\frac{1}{12}*3(1.5)(1.5)^2+\\3(1.5)(0.888-0.75)^2\\\\I_G=13.4\ kgm^2$

c) The mass moment of inertia about z axis passing the rotation center O is:

$I_o=\frac{1}{12}*3(0.8)(0.8)^2+ \frac{1}{3}* 3(1.5)(1.5)^2+\frac{1}{2}*(12)(\pi)(0.3)^2(0.3)^2 +(12)(\pi)(0.3)^2(1.8)^2-\\\frac{1}{2}*(12)(\pi)(0.1)^2(0.1)^2 -(12)(\pi)(0.1)^2(1.8)^2\\\\I_o=13.4\ kgm^2$

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3 years ago

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3 years ago

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zhuklara [117]

Answer:

B - Person A's chair rolls backwards.

Explanation:

This can be seen simply through the Conservation of Momentum. When the ball is thrown to be, the ball's momentum(+m) is transfererd to B, so B's chair moves forward(think about it - it makes sense, doesn't it?), meaning A's chair moves backwards.

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3 years ago

An electron in the n = 7 level of the hydrogen atom relaxes to a lower energy level, emitting light of 397 nm. what is the value

Dimas [21]

Answer:

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Explanation:

It is given that,

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Solving above equation we get the value of final n is,

$n_f=2.04$

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$\huge\underline{\underline{\boxed{\mathbb {EXPLANATION}}}}$

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