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katovenus [111]
3 years ago
13

On a temperature versus time graph, how does the temperature at the beginning of a change of state compare with the temperature

at the end of the change? always lower always the same usually lower usually higher
Mathematics
1 answer:
vlada-n [284]3 years ago
5 0

Answer:

Always the same

Step-by-step explanation:

The temperature at the beginning of a change of state is always the same as the temperature at the end.

This is because phase change is an isothermal process. it means that all the energy absorbed during the phase change process is utilized in the breaking of the bonds in the compound as it changes from one state of matter to another.

As a result, no increase in the temperature of the material will be detected by the thermometer.

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Lola gets two 20-minute breaks at work each day. She works 5 days a week. How much time does she spend on break each week?
Maslowich

Answer:

200 minutes / 3 hours & 20 minutes.

Step-by-step explanation:

This is quite simple.

First, since we know that Lola takes two 20 minute breaks at work each day, let's multiply 20 and 2.

20 × 2 = 40

This means she is on break for a total of 40 minutes each day.

Finally, let's take that 40 and multiply it by 5.

40 × 5 = 200

This means she spend 200 minutes (3 hours & 20 mins) on break each week.

8 0
3 years ago
Read 2 more answers
600 miles in 8 hours<br><br> _?_ miles per hour<br><br> (number answer only)<br><br> Question
kow [346]

Answer:

75

Step-by-step explanation:

you have 600 = 8 and you want to break it down into just 1 hour so you divide both sides by 8

600/8 = 75

4 0
3 years ago
8 more than a number
Anuta_ua [19.1K]

Answer:

\boxed{ 8 + x}

Step-by-step explanation:

<em>Hey there!</em>

<em />

In most cases "the number" would be x.

So if the statement says 8 <u><em>"more than a number",</em></u>

It is saying 8 plus x or 8 + x.

<em>Hope this helps :)</em>

3 0
3 years ago
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The temperature of a city changed -24 degrees Celsius over a 6 week period. Write an expression the show the average change in t
Ne4ueva [31]

Answer:

The expression is (-24) / 6 = -4degrees which means that in each week the average change in temperature was -4 degrees Celsius.

Step-by-step explanation:

Change in a quantities can as well be interpreted as rate of change which is used in many everyday problems, such as weather forecast, traveling , in science and so on.When we are talking about rate of change it's is usually in ratio such as Miles per hour or feet per second can be used in calculation involving rates of speed. It is how one quality is changing with respect to time , for instance, rate equals distance divided by time: r = d/t.

In finance rate of change is also applicable we can have Unit price which is a particular rate that compares a price to some unit of measure. Example is $64 per dozen.

Therefore, Given from the question,

The temperature of a city changed -24 degrees Celsius ,

Time =6 weeks period.

Then change is r = d/t.

= (-24) / 6

Change = (-24) / 6 = -4 degrees

This means that each week the average change in temperature was -4 degrees Celsius.

3 0
3 years ago
Help me I need help plsss
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Debt is negative, growth is positive, and elevation is a zero
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