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2 years ago

How energy efficiency can reduce energy consumption?

Physics

1 answer:

LuckyWell [14K]2 years ago

8 0

Answer:

The energy efficiency represents the things you can do with some amount of energy, and if you can do more with less, than it reduces the energy consumption.

Explanation:

The answer to this question is actually very simple. Imagine that you use only the half of the energy you produce, an efficiency of 50%. Lets say you need 5kJ, so you would need to produce 10kJ, because you can consume only the half. Now, imagine you increase the efficiency, you use exactly what you can generate, (efficiency of 100%). In this case, if you needed only 5kJ you would need to generate only 5kJ.

You might be interested in

In what condition do acceleration and deaccelration<br>

Vera_Pavlovna [14]

Im not sure what are you asking about. But in physic/ mechanic usually when the object against gravity, its deceleration but when the object follow the gravity its acceleration

Also usually when the object move to the left side the speed will be negative (-) this is probably because of deceleration? since deceleration = -acceleration.

5 0

3 years ago

A basketball player spins the ball with an angular acceleration of 10 rad/s2. What is the ball’s final angular velocity if the b

Lena [83]

Explanation:

It is given that,

The angular acceleration of the basketball, $\alpha=10\ rad/s^2$

Time taken, t = 3 seconds

We need to find the ball’s final angular velocity if the ball starts from rest. It can be calculated using definition of angular acceleration i.e.

$\alpha=\dfrac{\omega_f-\omega_i}{t}$

$\omega_i=0\ (rest)$

$\omega_f=\alpha t$

$\omega_f=10\ rad/s^2\times 3\ s$

$\omega=30\ rad/s$

So, the ball's final angular velocity is 30 rad/s. Hence, this is the required solution.

8 0

3 years ago

01:16:1

Talja [164]

Answer:

Hurricane

Explanation:

Hurricane can be described as a huge storm that came with a strong and harsh wind. This wind tends to move in a circular motion over warm ocean water that are found in tropical regions.

Hurricane comes with strong winds that move at the rate of over 60 miles per hour, this results in the formation of a heavy rainfall. Hurricanes are also referred to as cyclones depending on where they take place. In places like Florida, which is surrounded by the Atlantic ocean the type of natural hazard that occurs there is known is hurricane.

Hurricane is formed when warm air that emanates from the ocean begins to rise up to a very high temperature, When it comes across a much more cooler air the steam condenses and results in a heavy downpour.

3 0

3 years ago

Read 2 more answers

Study the drawings below. Choose the drawing that is most likely a mixture.

ratelena [41]

There is no attached picture. Please insert one so I can help out! :)

4 0

3 years ago

You have been sent to a new home. The homeowner reports that sometimes the electric furnace trips the 240-V, 60-A circuit breake

Zarrin [17]

Answer:

Explanation:

We should know that, Power is given as

P = IV

Where

P is power in watts

I is current in amps

And V is potential difference in Volts

The circuit breaker is design to be

240V, 60A.

So current above 60A will trip the circuit breaker off. Circuit breaker trips OFF when much current is flowing through the breaker.

Now,

The furnace that do trip the circuit breaker off has three heating element each of 5000W

And this element do not trip ON at once it is stage by stage.

When the first element is ON, the current it will draw from the MAINS is

We know that the first heating element has a power rating of 3000W.

P = IV

I' = P/V = 3000 / 240

I' = 20.833Amps

The circuit breaker is still OK with this because it has a capacity of 60A

After a while, the second, the second heating element is trip ON

And this will also draws a current of

I'' = P/V = 3000/240

I'' = 20.833amps

So, the total current drawn now is

I = I' + I" = 20.833 + 20.833

I = 41.667 amps

Again, the circuit breaker is still okay with this because it has a 60A capacity

After a while again, the third element is trip ON and this will also draw current of

I"' = P/V = 3000/240

I"' = 20.833 amps

Now, the total current drawn is

I = I' + I" + I"'

I = 20.833+20.833+20.833

I = 62.5 Amps

Wow, this is above the circuit rating of the breaker, then it will trip off.

Recommendation

I will recommend they get a new circuit breaker of higher capacity maybe 240V, 80-100A circuit breaker, since changing the furnace might cause a fortune.

7 0

3 years ago