Two cells are viewed and measured under a microscope. The approximate diameter of each cell is listed.

Question

Cell P: 5.0×10
−4
m
Cell Q: 3.0×10
−5
m

What is the difference in the diameters of the two cells?
(1 point)

0.047 m
0.002 m
0.00047 m
0.05 m

Answer 1

To find the difference in the diameters of Cell P and Cell Q, we need to subtract the diameter of Cell Q from the diameter of Cell P.

• Diameter of Cell P: \( 5.0 \times 10^{-4} \) m
• Diameter of Cell Q: \( 3.0 \times 10^{-5} \) m

First, let's convert Cell Q's diameter to the same order of magnitude as Cell P's for easier subtraction.

The diameter of Cell Q is \( 3.0 \times 10^{-5} \) m, which can be rewritten as \( 0.000030 \) m, and the diameter of Cell P is \( 5.0 \times 10^{-4} \) m, which is \( 0.00050 \) m.

Now, perform the subtraction:

\[ 5.0 \times 10^{-4} \text{ m} - 3.0 \times 10^{-5} \text{ m} = 0.00050 \text{ m} - 0.000030 \text{ m} = 0.00047 \text{ m} \]

So, the difference in the diameters of the two cells is:

0.00047 m.

Thus, the correct answer is 0.00047 m.