Q: Which of the following is the correct calculation for the speed of light in miles per hour, given $3.00 \times 10^8$ m/s and $1$ mile $= 1609.3$ m?

$3.00 \times 10^8 \div 1609.3 \times 3600$

Question 1

Which of the following numbers is correctly written in scientific notation?

Accepted Answer

$2.14 	imes 10^{-3}$

Question 2

How many significant figures are in the measurement $0.003050$ g?

Accepted Answer

4

Question 3

Which of the following is an exact number?

Accepted Answer

1000 mg = 1 g

Question 4

A student multiplies $6.00$ m $	imes$ $0.03799$ m $	imes$ $120$ m. To how many significant figures should the answer be reported?

Accepted Answer

3

Question 5

Convert $0.0150$ mg to micrograms ($\mu$g).

Accepted Answer

$15.0 \ \mu g$

Question 6

Which of the following prefixes represents the smallest quantity?

Accepted Answer

Pico-

Question 7

A saltwater solution has a mass of $11.29$ g and a volume of $10.4$ mL. What is its density in $g/mL$?

Accepted Answer

$1.09 \ g/mL$

Question 8

How many kilometers are in $78,000$ millimeters?

Accepted Answer

$0.078$ km

Question 9

A section of railroad track has a volume of $88,000$ cm$^3$. If the steel has a density of $7.80$ g/cm$^3$, what is the weight in pounds? ($1 \ kg = 2.205 \ lb$)

Accepted Answer

$1,510$ lb$

Question 10

Which of the following is the correct relationship for converting meters to feet?

Accepted Answer

$1 \ m = 3.280 \ ft$

Question 11

Your new car has a fuel consumption of $39.0$ miles/gallon. What is this in km/L? ($1 \ mi = 1.609 \ km$, $1 \ gal = 3.785 \ L$)

Accepted Answer

$16.5$ km/L

Question 12

Which of the following numbers has 4 significant figures?

Accepted Answer

$0.004200$

Question 13

What is the volume in cm$^3$ of $20.0$ g of ethanol? (Density of ethanol = $0.79$ g/cm$^3$)

Accepted Answer

$25.3$ cm^3$

Question 14

Which of the following is NOT a base SI unit?

Accepted Answer

Gram

Question 15

How many minutes are in a year? (Assume 1 year = 365.0 days)

Accepted Answer

$525,600$ min

Question 16

Which of the following is the correct calculation for the speed of light in miles per hour, given $3.00 	imes 10^8$ m/s and $1$ mile $= 1609.3$ m?

Accepted Answer

$3.00 	imes 10^8 \div 1609.3 	imes 3600$

Question 17

Which of the following is a correct statement about significant figures in addition and subtraction?

Accepted Answer

The answer should have as many decimal places as the number with the least decimal places.

Question 18

A student adds $0.432$ mi and $18.1$ mi. What is the correct answer with the proper number of significant digits?

Accepted Answer

$18.5$ mi

Question 19

Which of the following is the correct scientific notation for $0.000160$?

Accepted Answer

$1.60 	imes 10^{-4}$

Chapt 2. Measurement and Problem Solving: Scientific Notation, Units, Significant Figures, and Dimensional Analysis

Study Guide - Practice Questions

Study Guide - Flashcards