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3 years ago

What do astronomers mean by the big bang?

1 answer:

8 0

The big band theory is a theory that the universe started from a huge bang throwing all the galaxies out into space. #start of the universe.

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the structure shown in the picture is made of copper. The three thin rods are of equal dimensions. The single main rod is heated

charle [14.2K]

If you are on USA Test prep the answer is B

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3 years ago

Read 2 more answers

Some hydrogen gas is enclosed within a chamber being held at 200^\ { C} with a volume of 0.025 \rm m^3. The chamber is fitted wi

vlada-n [284]

Answer:

The final volume is $0.039 m^3$

Explanation:

Initial temperature: $T1=200C$

Final temperature: $T2=200C$

Initial pressure: $P1=1.50 \times10^6 Pa$

Final pressure: $P2=0.950 \times10^6 Pa$

Initial volume: $V1=0.025m^{3}$

Final volume: $V2=?$

Assuming hydrogen gas as a perfect gas it satisfies the perfect gas equation:

$\frac{PV}{T}=nR$ (1)

With P the pressure, V the volume, T the temperature, R the perfect gas constant and n the number of moles. If no gas escapes the number of moles of the gas remain constant so the right side of equation (1) is a constant, that allows to equate:

$\frac{P_{1}V_{1}}{T_{1}}=\frac{P_{2}V_{2}}{T_{2}}$

Subscript 2 referring to final state and 1 to initial state.

solving for V2:

$V_{2}=\frac{P_{1}V_{1}T_{2}}{T_{1}P_{2}}=\frac{(1.50 \times10^6)(0.025)(200)}{(200)(0.950 \times10^6)}$

$V_{2}=0.039 m^3$

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3 years ago

What is the rotation and axis of the lunar eclipse? Pls summarise in detail and asap

DanielleElmas [232]

Answer:

The Moon revolves around the Earth and rotates on its axis with the same period. • The combined effect of these two motions means that one side of the Moon always faces the Earth.

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3 years ago

Givereasons for the following.

Scrat [10]

a. Pascal is a derived unit because it is depend upon fundamental unit like as Kg, Meter, and Sec.

b. Mass is a fundamental quantity because it is independent with other.

c. Unit of power is a derived unit because it is depend upon fundamental unit like as Kg, Meter, and Sec.

d. Unit of length is a fundamental quantity because it is independent with other.

I hope you understand...

Thanks♥♥

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3 years ago

Newton's first law of motion is also called the law of acceleration true or false

kotykmax [81]

False. Newton first is also called the law of intertia

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3 years ago