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3 years ago

Which occurrence would contradict the big bang theory?

Physics

2 answers:

Papessa [141]3 years ago

8 0

Answer:

Explanation:

The answer is either B or D . if scientest discover something they havent known , itll cause the world to collapse into shorter things due to the max of the hydrogen. galaxies move farther apart from the earth itself.

san4es73 [151]3 years ago

3 0

Answer:

B) Scientist discover that 99% of the universe’s mass is hydrogen

Explanation:

Hydrogen and helium represent almost all nuclear matter in the current state of the universe. This is consistent with the Big Bang theory. This theory indicates that approximately 25% of the universe’s mass is helium, while hydrogen constitutes approximately 73% of the universe’s mass.

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In which scenario will an athlete's wrists be under tension?

Oxana [17]

Answer:

I think the answer would be D.

Explanation:

It could be b or d, the reason that I think that it is d is because lifting does not directly involve your wrist.

Hope this helps!

6 0

3 years ago

Read 2 more answers

Red light of wavelength 630 nm passes through two slits and then onto a screen that is 1.4 m from the slits. The center of the 3

VARVARA [1.3K]

Answer:

Part a)

$f = 4.76 \times 10^{14} Hz$

Part b)

$d = 3.48 \times 10^{-4} m$

Part c)

$\theta = 0.311 degree$

Explanation:

Part a)

As we know that the speed of light is given as

$c = 3 \times 10^8 m/s$

$\lambda = 630 nm$

now the frequency of the light is given as

$f = \frac{c}{\lambda}$

so we have

$f = \frac{3 \times 10^8}{630 \times 10^{-9}}$

$f = 4.76 \times 10^{14} Hz$

Part b)

Position of Nth maximum intensity on the screen is given as

$y_n = \frac{n\lambda L}{d}$

so here we know for 3rd order maximum intensity

$y_3 = 0.76 cm$

n = 3

L = 1.4 m

$0.76 \times 10^{-2} = \frac{3(630 \times 10^{-9})(1.4)}{d}$

$d = 3.48 \times 10^{-4} m$

Part c)

angle of third order maximum is given as

$d sin\theta = 3 \lambda$

$3.48 \times 10^{-4} sin\theta = 3(630 \times 10^{-9})$

$\theta = 0.311 degree$

8 0

3 years ago

Which strategies maximize recovery following an intense bout of resistance training?

RoseWind [281]

Answer:

The answers are:

a) drinking 20–24 ounces of water for every pound of body mass lost,

b) stretching muscle groups, holding each stretch for 30 seconds or more, and

c) replenishing low blood sugar with carbohydrates

Explanation:

I just took the exam and got this correct.

8 0

3 years ago

5. A little boy tries to push a heavy cupboard. He uses a force of 400 N, but he is unable to move

ad-work [718]

Answer:

NO HAY TRABAJO REALIZADO YA QUE EL NIÑO NO PUDO MOVER

EL ARMARIO, PARA QUE HAYA TRABAJO DEBE HABER DESPLAZAMIENTO.

Explanation:

8 0

3 years ago

A crew team rows a boat at a rate of 20 km/h in still water. Beginning at time = 0 minutes, the team rows for 30 minutes up a ri

umka21 [38]

Since they are rowing against the current, their velocity realtive to the groud is 20-1.5 = 18.5km/h
So the distance travelled is 18.5km/h*0.5h = 9.25km
Going back with the current their ground realative velocity is 20+1.5 = 21.5km/h so the time it takes them to return 9.25 km is 9.25km/(21.5km/h) = 0.43h ~= 26 min

7 0

3 years ago