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3 years ago

The base unit prefix used for 1,000× is _____. kilo milli centi deka

Physics

1 answer:

san4es73 [151]3 years ago

5 0

Answer:

$\Large \boxed{\sf kilo}$

Explanation:

kilo is a prefix that means $1000$ of the base unit.

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3. The soccer kicker kicks a 2 kg football with a force of 68 N. How fast will the ball accelerate down the field?

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Answer:

$\boxed {\boxed {\sf m= 2 \ kg , \\a= 34 \ m/s^2, \\\F= 68 \ N}}$

Explanation:

The formula for force is:

$F=m*a$

If we rearrange the formula to solve for a (acceleration), the formula becomes

$\frac{F}{m} =a$

The force is 68 Newtons. Let's convert the units to make the problem easier later on. 1 N is equal to 1 kg*m/s², so the force of 68 N is equal to 68 kg*m/s².

The mass is 2 kilograms.

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Substitute the values into the formula.

$\frac{68 \ kg*m/s^2}{2 \ kg} =a$

Divide. Note that the kilograms will cancel each other out (hence why we changed the units).

$\frac{68 \ m/s^2}{2}=a$

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The acceleration is<u> </u><u>34 meters per second squared.</u>

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3 years ago

The answer and how to do it

Arturiano [62]

Current = charge per second
2 Coulombs per second = 2 Amperes

Potential difference = (current)x(resistance) in volts.

That's (2 Amperes) x (2 ohms).

That's how to do it.
I think you can find the answer now.

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