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3 years ago

What is a benefit of fossil fuel consumption?

Physics

1 answer:

arlik [135]3 years ago

8 0

Answer:

increased greenhouse gases

Explanation:

I think this is the right answer...

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Radio telescopes measure the galaxy’s distribution of

dmitriy555 [2]

Radio Telescopes measures the galaxy's distribution of stars, galaxies, blackholes and other astronomical objects. It is used to study naturally -occuring radio light which is emitted by these astronomical bodies. Radio observatories are located far away from major cities to avoid electromagnetic interference from radio, televisions and radar.

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4 years ago

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What is the process of nuclear fusion?

Leto [7]

C. I think so :))) ISHSBSHAIWUWHSBSJJSWBSBSNJA

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3 years ago

Different types of waves travel at different speeds. For example, sound waves travel more slowly than light waves. Have you ever

trapecia [35]

Answer:

A). Light moves faster than sound, so you hear thunder after you see lightning.

Explanation:

The lightning and thunder demonstrate that 'light travels faster than sound' which clearly portrays the relationship between the light and the soundwaves. When we see lightning in the sky before hearing the sound of thunder as the speed of light much higher than the speed of sound. Sound travels ~ 343 m/s or 1235 km/hr while light travels 300000 km/s. This difference in speed prevents us from considering lightning and thunder as the same thing. The 'sound is a pressure wave and therefore, takes time to travel and bounce back to our ears.' Thus, we happen to witness lightning first. Hence, <u>option A</u> is the correct answer.

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3 years ago

A trumpet player on a moving railroad flatcar moves toward a second trumpet player standing alongside the track both play a 490

labwork [276]

Answer:

The value is $v_s = 1.394 \ m/s$

Explanation:

From the question we are told that

The frequency of the second player is $f_2 = 490 \ Hz$

The beat frequency is $f_b = 2.0 \ Hz$

The speed of sound is $v_s = 343 \ m/s$

Generally the frequency of the note played by the first player is mathematically represented as

$f_1 = f_2 + f_b$

=> $f_1 = 490 + 2.0$

=> $f_1 = 492 Hz$

From the relation of Doppler Shift we have that

$f_1 = \frac{ f_2 (v+ v_o )}{v-v_s }$

Here $v_o\ is\ the\ velocity\ of\ the\ observer\ with\ value\ 0 \ m/s$

$492 = \frac{ 490 (343+0 )}{343 -v_s }$

=> $v_s = 1.394 \ m/s$

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3 years ago

what happens to the current in a circuit if the resitance of the components in the circuit is increased

Anit [1.1K]

Answer:

The current decreases.

Explanation:

Current and resistance are inversely proportional. The equation connecting current, resistance and voltage is $V = IR$ , where V is voltage, I is current and R is resistance.

Rearranging this equation, you get:

$I = \frac{V}{R}$

and

$R = \frac{V}{I}$

If the value of voltage in both equations remains constant, and the value of R decreases, the value of I will increase. Conversely, if in the second equation $R = \frac{V}{I}$ , the value of V remains constant the value of I decreases, then the value of R, resistance will increase.

Thus, it can be seen that the current will decrease as resistance increases and vice versa.

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3 years ago