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Physics Examples

$P = \frac{W}{t}$

$P$	$=$	$?$
$W$	$=$	$1020 J$
$t$	$=$	$3 s$

Step 1

Substitute the given values into $P = \frac{W}{t}$ .

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Step 1.1

Substitute $1020 J$ for $W$ .

$P = \frac{1020 J}{t}$

Step 1.2

Substitute $3 s$ for $t$ .

$P = \frac{1020 J}{3 s}$

$P = \frac{1020 J}{3.00 s}$

Step 2

Simplify the right side.

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Step 2.1

Cancel the common factor of $1020$ and $3.00$ .

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Step 2.1.1

Factor $3.00$ out of $1020 J$ .

$P = \frac{3.00 (340 J)}{3.00 s}$

Step 2.1.2

Cancel the common factors.

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Step 2.1.2.1

Factor $3.00$ out of $3.00 s$ .

$P = \frac{3.00 (340 J)}{3.00 (1 s)}$

Step 2.1.2.2

Cancel the common factor.

$P = \frac{3.00 (340 J)}{3.00 (1 s)}$

Step 2.1.2.3

Rewrite the expression.

$P = \frac{340 J}{1 s}$

$P = \frac{340 J}{1 s}$

$P = \frac{340 J}{1 s}$

Step 2.2

Rewrite $J$ as $W s$ .

$P = \frac{340 (W s)}{1 s}$

Step 2.3

Cancel $s$ .

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Step 2.3.1

Cancel $s$ .

$P = \frac{340 (W s)}{1 s}$

Step 2.3.2

Divide $340 (W)$ by $1$ .

$P = 340 (W)$

$P = 340 W$

$P = 340 W$

Step 3

Round to $3$ significant figures.

$P = 3.40 \cdot 10^{2} W$

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$[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]$