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3 years ago

Why do you think energy usage is different at different times of the day

Physics

2 answers:

g100num [7]3 years ago

7 0

People are asleep at 3 am so energy would be less then.

OverLord2011 [107]3 years ago

3 0

Peak usage times, the more applicances that are used, the larger the pull and demand for energy. Therefore creating a larger load. Which in term causes more energy to be used. Hope that helped

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Compressional stress on rock can cause strong and deep earthquakes, usually at _____.

valentinak56 [21]

The answer is reverse faults.

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3 years ago

The pressure and absolute temperature of an ideal gas are both tripled, the volume is __________. not changed

ankoles [38]

Answer:

Not Changed

Explanation:

To know what happened with the volume you need to know the Ideal gas Law

$\frac{P_{1}V_{1}}{T1} =\frac{P_{2}V_{2} }{T2}$

This law is a combination of the other four laws: Boyles's, Charles's, Avogadro's, and Guy-Lussac's.

The initial state is represented by P1, V1, T1 and the final by P2, V2, T2.

In this case:

$T_{2} =3T_{1} \\P_{2} =3P_{1}$

Replacing on the equation

$\frac{P_{1}V_{1}}{T1} =\frac{3P_{1}V_{2}}{3T_{1} }$

If we clear from the equation V2

$\frac{P_{1}V_{1}3T_{1}}{T_{1} 3P_{1}} ={V_{2}}$

Then cancel both P1 and T1

$\frac{3V_{1}}{3} =V_{2}$

You will found that

$V_{1} =V_{2}$

3 0

3 years ago

What explains the key difference between a bomb calorimeter and a coffee cup calorimeter?.

Virty [35]

The key difference between a bomb calorimeter and a coffee cup calorimeter is high temperature.

<h3>What is bomb calorimeter?</h3>

A bomb calorimeter is an apparatus that can measure heats of combustion, used in various applications such as calculating the calorific value of foods and fuels.

<h3>What is coffee cup calorimeter?</h3>

A coffee cup calorimeter is a cup used to provide insulation when materials are mixed inside of it.

<h3>Difference between the two calorimeter</h3>

The coffee cup calorimeter can't be used for high-temperature reactions, either, because they would melt the cup.
A bomb calorimeter is used to measure heat flows for gases and high-temperature reactions

Learn more about calorimeter here: brainly.com/question/1407669

#SPJ1

3 0

2 years ago

A 12cm candle is placed 6cm from a converging lens with a focal length of 15cm. What is the height of the image of the candle? S

amm1812

Answer:

The height of the image of the candle is 20 cm.

Explanation:

Given that,

Size of the candle, h = 12 cm

Object distance from the candle, u = -6 cm

Focal length of converging lens, f = 15 cm

To find,

The height of the image of the candle.

Solution,

Firstly, we will find the image distance of the candle. Let it is equal to v. Using lens formula to find the image distance.

$\dfrac{1}{f}=\dfrac{1}{v}-\dfrac{1}{u}$

v is image distance

$\dfrac{1}{f}=\dfrac{1}{v}-\dfrac{1}{u}\\\\\dfrac{1}{v}=\dfrac{1}{f}+\dfrac{1}{u}\\\\\dfrac{1}{v}=\dfrac{1}{15}+\dfrac{1}{(-6)}\\\\v=-10\ cm$

If h' is the height of the image. Magnification is given by :

$m=\dfrac{h'}{h}=\dfrac{v}{u}$

$h'=\dfrac{vh}{u}\\\\h'=\dfrac{-10\times 12}{-6}\\\\h'=20\ cm$

So, the height of the image of the candle is 20 cm.

3 0

2 years ago

An aircraft flying from a region of warmer air towards a region of colder air will _____ altitude, and the altimeter will read a

Step2247 [10]

Answer:

lose, higher

Explanation:

An aircraft lose altitude when flying from a region of higher temperature to a region of cooler temperature, hence making the reading on the altimeter to be high.

5 0

3 years ago

Read 2 more answers