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3 years ago

What might happen if a person’s ear canal was blocked?

Physics

1 answer:

mylen [45]3 years ago

7 0

Answer:

D. Sounds would be harder to hear.

Explanation:

if the ear canal is blocked then the sound waves cannot reach the ear drum thus we cannot hear clearly.

hope this helps please mark as brainliest:)

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A 400 W computer is turned on 8 hours per day. If electricity costs 10 cents per kwh. How much does it cost to run the computer

AleksAgata [21]

A 400 W computer is turned on 8 hours per day. If electricity costs 10 cents per kwh then the cost to run the computer annually is 116800 dollars.

Energy is dependent on the power consumed for a given period of time.

Given,

Power = 400W

Time = 8 hours/day

Cost of 1KWh = 10cents

We know that,

Energy consumed = Power × time

So,

Energy consumed in one day = Power × time

Energy consumed in one day = 400 × 8h

Energy consumed in one day = 3200KWh

Now,

Energy consumed in 365 day = Energy consumed in one day × 365

Energy consumed in 365 day = 3200 × 365

Energy consumed in 365 day = 11,68,000 KWh

Also,

Cost of 1 KWh = 10 cents

Cost of 11,68,000 KWh = 11,68,000 ×10

Cost of 11,68,000 KWh = 11680000 cents

Now, 1 Cent = 0.01 dollars

11680000 cents = 116800 dollars

Hence, it will cost 116800 dollars to run the computer 8hours per day anually.

Learn more about Energy here, brainly.com/question/4723473

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6 0

2 years ago

For every action there is an equal and opposite reaction. What does this quote mean?

ivann1987 [24]

Answer:

$\vec F_{action} + \vec F_{reaction} = 0$

$\vec F_{action} = - \vec F_{reaction}$

so it is said that every action has equal and opposite reaction

Explanation:

This is newton's III law which states that if some force is applied in the form of action force to an object then the same magnitude force is applied by the object on the source in reverse direction

so we can say that the reaction force is always applied by object in opposite direction

so in vector form we can say

$\vec F_{action} + \vec F_{reaction} = 0$

$\vec F_{action} = - \vec F_{reaction}$

so it is said that every action has equal and opposite reaction

5 0

3 years ago

A snail crawls at a speed of 0.0004 m/s. How long will ot take to climb a garden stick 1.6m high?

tekilochka [14]

4000 seconds

Explanation:

speed = distance / time

0.0004m/s = 1.6m / time

Subject time

time = 1.6 / 0.0004

time = 4000 seconds.

Hope this helps. Mark as brainliest if possible. tks

5 0

3 years ago

You did 150 joules of work lifting a 75 newton backpack. How high did you life the backpack?

ss7ja [257]

Work/force=150/75
=2 metre

7 0

3 years ago

Which of the following best explains energy transformation in hydrogen fuel cells?Methane reacts with oxygen to produce carbon a

aivan3 [116]

Answer:

Hydrogen reacts with oxygen to produce water, which releases energy.

Explanation:

In any fuel cell chemical bonds are formed and energy is released . It is a redox reaction . Bond energy is converted into electrical energy.

In the given option , first option is not possible because methane reacts with oxygen to give carbon dioxide and water .

third and fourth option are ruled out because chemical reactions are using energy . No energy is released . so they are not possible.

3 0

3 years ago