Describe two possibilities of what will happen to the universe in the future.

1 answer:

4 0

In our current view of the Universe there are 2 possible futures. One possiblity is that the Universe will come to an end in the opposite of a Big Bang called The Big Crunch. The other possibility is that we live in an Eternal Universe that will never come to end.

i hope this helps :)

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T/F all compounds are molecules but NOT all molecules are compounds.

Solnce55 [7]

True because molecules don't have to be compounds but compounds have to be molecules

7 0

2 years ago

A spring with a spring constant of 50 N/m is stretched 15cm. What is the force and energy associated with this stretching?

Olenka [21]

Data:
F (force) = ? (Newton)
k (<span>Constant spring force) = 50 N/m
x (</span>Spring deformation) = 15 cm → 0.15 m

Formula:
$F = k*x$

Solving:
$F = k*x$
$F = 50*0.15$
$\boxed{\boxed{F = 7.5\:N}}\end{array}}\qquad\quad\checkmark$

Data:
E (energy) = ? (joule)
k (Constant spring force) = 50 N/m
x (Spring deformation) = 15 cm → 0.15 m

Formula:
$E = \frac{k*x^2}{2}$

Solving:(Energy associated with this stretching)
$E = \frac{k*x^2}{2}$
$E = \frac{50*0.15^2}{2}$
$E = \frac{50*0.0225}{2}$
$E = \frac{1.125}{2}$
$\boxed{\boxed{E = 0.5625\:J}}\end{array}}\qquad\quad\checkmark$

7 0

3 years ago

What must occur for work to be done on an object?

katrin2010 [14]

The answer is D) the object must move. The definition of work is movement (in any form).

Hope this helped! If it did, would you mind marking my answer as Brainliest? Thanks :D

8 0

3 years ago

Please answer and ill give brainliest

slavikrds [6]

Answer:

12:00 A.M. (midnight)

Explanation:

If it is the middle of the night, not many people will use electricity because most people are sleeping

Hope this helps! :)

PLEASE MARK ME AS BRAINLIEST

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2 years ago

what is most likely to be studied by direct observation? brown and white spots on dog, tail 25 cm. long, dog eating organic food

mote1985 [20]

I think it would be brown and white spots, because you can see that immediately and it's a color. Hope that helps!

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3 years ago