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asambeis [7]
3 years ago
15

As the bell rings, which energy transformation occurs? A. Mechanical energy is converted into sound energy. B. Chemical energy i

s converted into heat energy. C. Mechanical energy is converted into heat energy. D. Chemical energy is converted into sound energy.
Physics
2 answers:
nalin [4]3 years ago
7 0

Answer:

A) Mechanical energy is converted into sound energy.

Explanation:

kherson [118]3 years ago
4 0

Answer:

Mechanical Energy.

Explanation:

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3 years ago
The engine of a locomotive exerts a constant force of 6.8 105 N to accelerate a train to 80 km/h. Determine the time (in min) ta
Setler [38]

Answer:

t = 6 minutes

Explanation:

Given that,

Force,F=6.8\times 10^5\ N

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The mass of the train, m=1.1\times 10^7\ kg

We need to find the time taken by the train to come to rest. We know that,

F = ma

F=\dfrac{m(v-u)}{t}\\\\t=\dfrac{m(v-u)}{F}\\\\t=\dfrac{1.1\times10^7\times (22.22-0)}{6.8\times 10^5}\\\\t=359.44\ s

or

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3 0
2 years ago
A bus travelling at a speed of 40 kmph reaches its destination in 8 minutes and 15 seconds. How far is the destination? a. 5.43
exis [7]

Answer:

c. 5.50 km

Explanation:

8 min * 1h/(60 min) = 8/60 = 2/15 h

15 sec* 1 min/60 sec = 1/4 min * 1h/(60 min) =  1/240 h

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5 0
2 years ago
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sveticcg [70]

Answer:

Exposing it to a very strong magnetic field

Explanation:

Aluminium is a non magnetic metal thus it is not magnetic under normal conditions. This is because it interacts with other magnets. The only condition that magnetism can be induced in aluminium is exposing it to a very strong magnetic field.

8 0
3 years ago
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