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3 years ago

6

Which of these black holes exerts the weakest tidal force on an object near its event horizon? Which of these black holes exerts

the weakest tidal force on an object near its event horizon?
A.a 100MSun black hole
B. a 10MSun black hole
C. a 106MSun black hole

1 answer:

ratelena [41]3 years ago

6 0

Answer:

THA ANSWER IS B

Explanation:

YEH ITS B

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3 years ago

An object falls a distance h from rest. If it travels 0.560h in the last 1.00 s, find (a) the time and (b) the height of its fal

VashaNatasha [74]

Answer:

(a) t = 2.97s

(b) h = 43.3 m

Explanation:

Let t be the time it takes to fall a distance h, then t - 1 (s) is the time it takes to fall a distance of h - 0.56h = 0.44 h

For the ball to fall from rest a distance of h after time t

$h = gt^2/2$

Also for the ball to fall from rest a distance of 0.44h after time (t-1)

$0.44h = g(t-1)^2/2$

We can substitute the 1st equation into the 2nd one

$0.44gt^2/2 = g(t-1)^2/2$

and divide both sides by g/2

$0.44t^2 = (t-1)^2$

$0.44t^2 = t^2 - 2t + 1$

$0.56t^2 - 2t + 1 = 0$

$t= \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}$

$t= \frac{2\pm \sqrt{(-2)^2 - 4*(0.56)*(1)}}{2*(0.56)}$

$t= \frac{2\pm1.33}{1.12}$

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3 years ago

What is the concentration of a solution if 65 g of sugar is dissolved into 200 ml of water?

DIA [1.3K]

Answer:

the concentration in g/L 325 while in molarity is 0.6398(M).

Explanation:

hope this helps

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2 years ago