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VARVARA [1.3K]
3 years ago
13

Which statements describe the principles of the big bang theory? Select two options. The universe is continuing to expand. The u

niverse stretched from a single point. The universe resulted from the collision of light and dark energy. The universe expanded, but its size is now remaining constant. The universe is slowly collapsing and getting smaller.
Physics
2 answers:
Hitman42 [59]3 years ago
6 0

Answer A and b

Explanation:

irina1246 [14]3 years ago
3 0

Answer:

a. The universe is continuing to expand.

b. The universe stretched from a single point.

Explanation:

An explanation by the astronomers of how the universe was formed or began is referred to as the big bang theory. They posited that the universe stretched from a single point and then expanded to how it is right now.

Basically, it was stated by the astronomer known as Georges Lemaître.

The statements which best describe the principles of the big bang theory are;

I. The universe is continuing to expand.

II. The universe stretched from a single point.

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Which two statements explain reasons to use a computer program to encode
Paraphin [41]

Answer:a

Explanation:why not

8 0
3 years ago
Read 2 more answers
Four vehicles approach an intersection with a 4 way stop at the same time. Car B is ahead of Car A and both are in the same lane
garik1379 [7]

Answer: car D

Explanation:

4 0
3 years ago
A speeding car is pulling away from a police car. The police car is moving at 30 m/s. The radar gun in the police car emits an e
Gekata [30.6K]

Answer:

65.625 m/s

Explanation:

F=20\times 10^9 Hz

\Delta F=F_r-F_t=4750 Hz

c = Speed of light = 3×10⁸ m/s

Relative speed

v=\frac{\Delta F}{2F}\times c\\\Rightarrow v=\frac{4750}{2\times 20\times 10^9}\times 3\times 10^8\\\Rightarrow v=35.625\ m/s

Relative speed = 35.625 m/s

Velocity of speeder = Velocity of police car + Relative speed

⇒Velocity of speeder = 30 + 35.625 = 65.625 m/s

∴ Velocity of speeder is 65.625 m/s

6 0
3 years ago
on a standard position vs time graph, the distance between two points on the horizontal axis represents the time interval, and t
Stels [109]

Answer: true

Explanation: I got the question and guessed true and it was right

3 0
3 years ago
Leash a block of 0.5 kg down the entire length of an inclined plane forming a name of 37 ° with the horizontal. Friction with th
castortr0y [4]
The potential energy of the block is given by:
V = m*g*h
m mass
g = 9.81m/s²
h height

The potential energy of a spring is given by:
V = 0.5 * k * x²

k spring constant
x compression of the spring

If the block starts from rest it has potential energy, but no kinetic energy. As it slides down the incline potential energy is converted into kinetic energy. When the block hits the spring the kinetic energy is converted into spring's potential energy. If the spring is fully compressed and the block is at rest again, the block has transferred all its energy into the spring. No energy is lost. So we can write:

m * g * h = 0.5 * k * x²

m = 0.5 kg
g = 9.81 m/s²
h = 2.5m * sin 37° = 1,5 m
x = 0,6 m

Solve for k.

k = 2 * m * g * h / x² = 40.8 N/m
6 0
3 years ago
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