The following conversion equivalents are given: 1 gal = 231 in3 1 ft = 12 in 1 min = 60 s A pipe delivers water at the rate of 95 gal/min.The rate,in in3/s,is closest to:

A) 0.21 B) 0.19 C) 0.17 D) 0.15 E) 0.14 A) 0.21 B) 0.19 C) 0.17 D) 0.15 E) 0.14 A

Express [ 2.2 × 106]-1/2 in scientific notation.

A) 6.7 × 10-4 B) 1.5 × 103 C) 1.5 × 10-5 D) 1.5 × 104 A) 6.7 × 10-4 B) 1.5 × 103 C) 1.5 × 10-5 D) 1.5 × 104

The wavelength of a certain laser is 0.66 microns,where 1 micron = 1 x 10-6 m.What is this wavelength in nanometers? (1 nm = 10-9m)

A) 6.6 × 102 nm B) 6.6 × 103 nm C) 6.6 × 101 nm D) 6.6 × 104 nm A) 6.6 × 102 nm B) 6.6 × 103 nm C) 6.6 × 101 nm D) 6.6 × 104 nm

The following conversion equivalents are given: 1 kg = 1000g 1 l = 1000 cm3 11 = 0.0353 ft3 The density of a liquid is 0.83 g/cm3.The density of the liquid,in kg/ft3,is closest to:

A) 24 B) 19 C) 21 D) 26 E) 28 A) 24 B) 19 C) 21 D) 26 E) 28

Exam 1: Representing Motion

The length of a certain piece of wood is stated as 12.946 cm.Thinking in terms of accuracy and significant figures,what value would you obtain if you measured this board with a ruler whose smallest division is the millimeter?

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Question 1

Correct Answer:

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Since 1 cm = 10 mm,you could only measure this board to 1/10 of a centimeter,therefore,12.9 cm.

A possible unit for the measure of time would be the period of your own pulse.Why might this unit not be a good choice for a time standard?

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Question 2

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In general,the human pulse rate often changes.Also,other people would,in general,have different pulse rates,so it would be difficult to reproduce the standard.

The following conversion equivalents are given: 1 gal = 231 in³ 1 ft = 12 in 1 min = 60 s A pipe delivers water at the rate of 95 gal/min.The rate,in in3/s,is closest to:

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(Multiple Choice)

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Question 3

Correct Answer:

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Add 3685 g and 66.8 kg and express your answer in milligrams (mg).

(Multiple Choice)

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Question 4

A plot of land contains 5.8 acres.How many square meters does it contain? [1 acre = 43,560 ft².]

(Multiple Choice)

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Question 5

The change in the position vector of a moving object is equal to the distance it has moved.

(True/False)

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Question 6

Express [ 2.2 × 10⁶]^-1/2 in scientific notation.

(Multiple Choice)

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Question 7

If you needed to estimate the number of gallons of gasoline burned in the United States each year by automobiles,what quantities would you need to assume? What formula would you need to use?

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Question 8

If the final position vector of a moving object has a smaller magnitude than the initial position vector,then the change in the object's position vector has a positive magnitude.

(True/False)

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Question 9

What is to the proper number of significant figures?

(Multiple Choice)

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Question 10

If the average speed of an object is zero,then its average velocity must be zero;but if its average velocity is zero,its average speed is not necessarily zero.

(True/False)

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Question 11

The wavelength of a certain laser is 0.66 microns,where 1 micron = 1 x 10-⁶ m.What is this wavelength in nanometers? (1 nm = 10^-9m)

(Multiple Choice)

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Question 12

What is 0.205^2/3,to the proper number of significant figures?

(Multiple Choice)

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Question 13

Estimate the number of times an average person's heart beats in a lifetime.Assume the average heart rate is 69 beats/min and a life span of 75 yr.

(Multiple Choice)

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Question 14

A person on a diet loses 1.6 kg in a week.How many micrograms/second (µg/s)are lost?

(Multiple Choice)

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Question 15

The following conversion equivalents are given: 1 kg = 1000g 1 l = 1000 cm³ 11 = 0.0353 ft³ The density of a liquid is 0.83 g/cm³.The density of the liquid,in kg/ft³,is closest to:

(Multiple Choice)

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Question 16

An equation that you will use later is x = at²,where a has units of acceleration,t has units of time,and x has units of distance.If t = 61.9 s,find the difference between the values of x obtained when a = 9.81 m/s² and when a = 10.0 m/s².

(Multiple Choice)

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Question 17

The following conversion equivalents are given: 1 mile = 5280 ft 1 ft = 12 in 1 m = 39.37 in 1 hour = 60 min 1 min = 60 s A particle has a velocity of 4.7 miles per hour.The velocity,in m/s,is closest to:

(Multiple Choice)

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Question 18

If a vector pointing to the right has a positive magnitude,then one pointing to the left has a negative magnitude.

(True/False)

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Question 19

Which of the following is a reasonable estimate of the number of characters (typed letters or numbers) in a 609 page book? Assume an average of 194 words/page and a reasonable average number of letters/word.

(Multiple Choice)

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Question 20

Showing 1 - 20 of 30

Exam 1: Representing Motion

The length of a certain piece of wood is stated as 12.946 cm.Thinking in terms of accuracy and significant figures,what value would you obtain if you measured this board with a ruler whose smallest division is the millimeter?

A possible unit for the measure of time would be the period of your own pulse.Why might this unit not be a good choice for a time standard?

The following conversion equivalents are given: 1 gal = 231 in3 1 ft = 12 in 1 min = 60 s A pipe delivers water at the rate of 95 gal/min.The rate,in in3/s,is closest to:

Add 3685 g and 66.8 kg and express your answer in milligrams (mg).

A plot of land contains 5.8 acres.How many square meters does it contain? [1 acre = 43,560 ft2.]

The change in the position vector of a moving object is equal to the distance it has moved.

Express [ 2.2 × 106]-1/2 in scientific notation.

If you needed to estimate the number of gallons of gasoline burned in the United States each year by automobiles,what quantities would you need to assume? What formula would you need to use?

If the final position vector of a moving object has a smaller magnitude than the initial position vector,then the change in the object's position vector has a positive magnitude.

What is to the proper number of significant figures?

If the average speed of an object is zero,then its average velocity must be zero;but if its average velocity is zero,its average speed is not necessarily zero.

The wavelength of a certain laser is 0.66 microns,where 1 micron = 1 x 10-6 m.What is this wavelength in nanometers? (1 nm = 10-9m)

What is 0.2052/3,to the proper number of significant figures?

Estimate the number of times an average person's heart beats in a lifetime.Assume the average heart rate is 69 beats/min and a life span of 75 yr.

A person on a diet loses 1.6 kg in a week.How many micrograms/second (µg/s)are lost?

The following conversion equivalents are given: 1 kg = 1000g 1 l = 1000 cm3 11 = 0.0353 ft3 The density of a liquid is 0.83 g/cm3.The density of the liquid,in kg/ft3,is closest to:

An equation that you will use later is x = at2,where a has units of acceleration,t has units of time,and x has units of distance.If t = 61.9 s,find the difference between the values of x obtained when a = 9.81 m/s2 and when a = 10.0 m/s2.

The following conversion equivalents are given: 1 mile = 5280 ft 1 ft = 12 in 1 m = 39.37 in 1 hour = 60 min 1 min = 60 s A particle has a velocity of 4.7 miles per hour.The velocity,in m/s,is closest to:

If a vector pointing to the right has a positive magnitude,then one pointing to the left has a negative magnitude.

Which of the following is a reasonable estimate of the number of characters (typed letters or numbers) in a 609 page book? Assume an average of 194 words/page and a reasonable average number of letters/word.

Motion in One Dimension

Vectors and Motion in Two Dimensions

Forces and Newtons Laws of Motion

Applying Newtons Laws

Circular Motion,orbits,and Gravity

Rotational Motion

Equilibrium and Elasticity

Momentum

Energy and Work

Using Energy

Thermal Properties of Matter

Fluids

Oscillations

Traveling Waves and Sound

Superposition and Standing Waves

Wave Optics

Ray Optics

Optical Instruments

Electric Fields and Forces

Electric Potential

Current and Resistance

Circuits

Magnetic Fields and Forces

Electromagnetic Induction and Electromagnetic Waves

Ac Electricity

Relativity

Quantum Physics

Atoms and Molecules

Nuclear Physics

Filters

The following conversion equivalents are given: 1 gal = 231 in³ 1 ft = 12 in 1 min = 60 s A pipe delivers water at the rate of 95 gal/min.The rate,in in3/s,is closest to:

A plot of land contains 5.8 acres.How many square meters does it contain? [1 acre = 43,560 ft².]

Express [ 2.2 × 10⁶]^-1/2 in scientific notation.

The wavelength of a certain laser is 0.66 microns,where 1 micron = 1 x 10-⁶ m.What is this wavelength in nanometers? (1 nm = 10^-9m)

What is 0.205^2/3,to the proper number of significant figures?

The following conversion equivalents are given: 1 kg = 1000g 1 l = 1000 cm³ 11 = 0.0353 ft³ The density of a liquid is 0.83 g/cm³.The density of the liquid,in kg/ft³,is closest to:

An equation that you will use later is x = at²,where a has units of acceleration,t has units of time,and x has units of distance.If t = 61.9 s,find the difference between the values of x obtained when a = 9.81 m/s² and when a = 10.0 m/s².