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Nadusha1986 [10]
3 years ago
13

A motorcycle running on gasoline wastes a large amount of energy mainly as A) heat energy and sound energy. B) light energy and

kinetic energy. C) heat energy and chemical energy. D) sound energy and chemical energy.
Physics
1 answer:
vlada-n [284]3 years ago
3 0

A motorcycle mainly wastes energy as heat <u>energy</u> and <u>sound</u> energy. In the engine, chemical energy is transformed into mechanical energy. However, the engine is inefficient and much of the chemical energy is lost as heat energy. Also, some of the energy is transformed to sound energy. This explains why the motorcycle is noisy and has an exhaust pipe.

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Which of the following is not a form of an inclined plane?
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Answer: piece of paper cut into a triangle  

Explanation:

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How many seconds will it take to travel 3,600 meters if your speed is 90 meters per second?
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People hoping to travel to other worlds are faced with huge challenges. One of the biggest is the time required for a journey. T
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The travel would take 6.7 years.

Explanation:

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t = time

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x = x0 + v t

where v = velocity

Let´s calculate the position from the Earth after half a year moving with an acceleration of 1.3 g = 1.3 * 9.8 m/s² = 12.74  m/s²:

Seconds in half a year:

1/2 year = 1.58 x 10⁷ s

x = 0 m + 0 m/s + 1/2 * 12.74 m/s² * (1.58 x 10⁷ s)²  = 1.59 x 10¹⁵ m

Now let´s see how much time it takes the travel to the nearest star after this half year.

The velocity will be the final velocity achived after the half-year travel with an acceleration of 12.74 m/s²

v = v0 + a t

Since the spacecraft starts from rest, v0 = 0

v = 12.74 m/s² * 1.58 x 10⁷ s = 2.01 x 10 ⁸ m/s

Using the equation for position:

x = x0 + v t

4.1 x 10¹⁶ m = 1.59 x 10¹⁵ m + 2.01 x 10 ⁸ m/s * t

(4.1 x 10¹⁶ m - 1.59 x 10¹⁵ m) / 2.01 x 10 ⁸ m/s = t

t = 2.0 x 10⁸ s * 1 year / 3.2 x 10 ⁷ s = 6.2 years.

The travel to the nearest star would take 6.2 years + 0.5 years = 6.7 years.

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Answer:

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