Dave runs 2000 m in 25 minutes what is the speed

Answers

Answer 1

Answer:

Answer: To find Dave's speed, you can use the formula for speed, which is:

Speed = Distance / Time

In this case, Dave ran 2000 meters in 25 minutes. First, you'll need to convert the time to hours, as speed is typically measured in meters per second or meters per hour. There are 60 minutes in an hour, so:

25 minutes = 25 / 60 = 5/12 hours

Now, you can calculate Dave's speed:

Speed = 2000 meters / (5/12) hours

To divide by a fraction, you can multiply by its reciprocal (flip it):

Speed = 2000 meters / (5/12 hours) = 2000 meters * (12/5) hours

Now, calculate the speed:

Speed = 4800 meters per hour

So, Dave's speed is 4800 meters per hour.

Explanation: hope this helps :D

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For example: The solid is not completely submerged in the water. Will this technique error increase, decrease, or have no effect on the reported density of the solid?

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What is the percent by mass of carbon in C10 H14 N2?

Answers

Answer: The percentage by mass of carbon in the given compound is 45.8 %

Explanation:

We are given a chemical compound having chemical formula $C_(10)H_(14)N_2$

To calculate the percentage composition of an element in a compound, we use the equation:

$\%\text{ composition}=\frac{\text{Mass of carbon element}}{\text{Mass of compound}}* 100$

In 1 mole of given compound, 10 moles of carbon atoms are there.

Mass of $C_(10)H_(14)N_2= [(10* 12)+(14 * 1)+(2* 14)]=262g/mol$

Mass of carbon element = $[10* 12]=120g/mol$

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Multiply the number of each element by its mass on the periodic table.

Add them together.

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Answers

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FALSE

Answers

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What is the highest quantum number for Silicon

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Answers

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