Q: Which of the following groups of units forms a compatible set for the equation $$F = m \times a$$?

$$[\text{kg}]$$, $$[\text{m}]$$, $$[\text{s}]$$

Q: The speed of light is approximately $$3.00 \times 10^8$ m/s. Convert this speed to yards/week (yd/wk).

$$1.84 \times 10$$^{12}$$ yd/wk

Q: When converting $$100 ft$^2 to m$^2$$, which conversion factor should be squared?

$$1 \text{ ft} = 0.305 \text{ m}$$

Question 1

Which of the following is a correct definition of a physical quantity in physics?

Accepted Answer

A property that can be measured and must have both a number and a unit.

Question 2

Which of the following groups of units forms a compatible set for the equation $$F = m 	imes a$$?

Accepted Answer

$$[	ext{kg}]$$, $$[	ext{m}]$$, $$[	ext{s}]$$

Question 3

Express 6.5 hm (hectometers) in meters using the correct metric prefix conversion.

Accepted Answer

$$650 m$$

Question 4

Astronomers detect radio waves with wavelengths of $$3,000,000,000 nm. $$What is this wavelength expressed in decameters (dam)?

Accepted Answer

$$0.03$$ dam

Question 5

Rewrite $$299,800,000 m/s in $$scientific notation.

Accepted Answer

$$2.998 	imes 10^8$ m/s

Question 6

Express $$0.0000529 	imes 10^6$ m in scientific notation.

Accepted Answer

$$5.29 	imes 10^2$ m

Question 7

Convert $$22$$ lbs to kilograms using the appropriate conversion factor.

Accepted Answer

$$9.98 kg$$

Question 8

The speed of light is approximately $$3.00 	imes 10^8$ m/s. Convert this speed to yards/week (yd/wk).

Accepted Answer

$$1.84 	imes 10$$^{12}$$ yd/wk

Question 9

How many significant figures are in the number $$0.013200972000$$?

Accepted Answer

10

Question 10

Which of the following measurements is a vector?

Accepted Answer

"I walked 10 ft east"

Question 11

A block has side lengths $$0.50 m$$, $$0.875 m$$, and $$2.250 m. $$Block B has a volume of $$2.6 m$^3. $$What is the combined volume of the blocks, expressed with the correct number of significant figures?

Accepted Answer

$$3.0 m$^3$$

Question 12

Which of the following statements about distance and displacement is correct?

Accepted Answer

Distance is always positive, while displacement can be negative.

Question 13

If you walk $$10 m $$east and then $$6 m $$west, what is your total displacement?

Accepted Answer

$$4 m $$east

Question 14

Which of the following is the correct scientific notation for the mass of Earth, $$5,972,000,000,000,000,000,000,000 kg$$?

Accepted Answer

$$5.972 	imes 10$$^{24}$$ kg

Question 15

When converting $$100 ft$^2 to m$^2$$, which conversion factor should be squared?

Accepted Answer

$$1 	ext{ ft} = 0.305 	ext{ m}$$

Question 16

Which of the following numbers has the greatest precision?

Accepted Answer

$$10.27 kg$$

Question 17

If you add $$5.389$$, $$-4.3$$, and $$0.103$$, what is the answer rounded to the correct number of decimal places?

Accepted Answer

$$1.2$$

Question 18

Which of the following is NOT a base SI unit?

Accepted Answer

Pound (lb)

Question 19

When converting non-SI units to SI units before using equations, what must you do?

Accepted Answer

Convert all units to SI units

Question 20

Which of the following is a scalar quantity?

Accepted Answer

Temperature

Physics Foundations: Measurement, Units, and Scientific Notation

Guida di studio - Domande di pratica

Study guide - Flashcard