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Musya8 [376]
3 years ago
11

Help me with number 3 and 4 pleaseeeeeeeee

Physics
2 answers:
Andrej [43]3 years ago
6 0

i think its b cause if you were talking about ice it freezes the melts the evaporates to gas

Roman55 [17]3 years ago
3 0
Number three I think might be b
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ValentinkaMS [17]

Answer:

<u>20 Minutes</u>

<u></u>

Explanation:

Well we know Mph (Miles per hour) is distance over time : \frac{distance}{time} \\

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d (distance) = 20

t (time) = Unknown

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

 R = \frac{d}{t}  

   ↓

60 = \frac{20}{t}

   ↓

 t = \frac{20}{60}

    ↓

 t = \frac{1}{3}  or 0.3333

<em>So basically it would take one third of an hour. Lets change these units to minutes.</em>

60 * 0.333333 = 20

<em>So it would take you </em><u><em>20 minutes</em></u><em> to drive 20 miles on a bus that drives 60 mph</em>

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Hope that helps

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an electric current of 285.0 ma flows 674. milliseconds. Calculate the amount of electric charge transported. Be sure your answe
yulyashka [42]

Answer:

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Explanation:

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Q = It..................... Equation 1

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<em>       (ii) convert from 674 milliseconds to seconds = (674/1000) s = 0.674 s          </em>

Substituting these values into equation 1

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<em>Therefore the amount of electric charge transported = 0.192 C</em>

<em></em>

<em></em>

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