Question 1

A physics class in a large lecture hall has 150 students.The total mass of the students is about ____ kg.

Accepted Answer

A) 104 
B) 105 
C) 106 
D) 107 
E) ​108 
A) 104 
B) 105 
C) 106 
D) 107 
E) ​108

Question 2

The nuclei of atoms contain

Accepted Answer

A) electrons only. 
B) neutrons only. 
C) protons and electrons. 
D) protons and neutrons. 
A) electrons only. 
B) neutrons only. 
C) protons and electrons. 
D) protons and neutrons.

Question 3

When was the existence of the neutron confirmed?

Accepted Answer

A) in ancient times 
B) in 1895 
C) in 1932 
D) in 1969 
A) in ancient times 
B) in 1895 
C) in 1932 
D) in 1969

Question 4

How many significant figures does the number 3 600 have?​

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
E) ​One cannot tell with certainty when the number is written in the given form,but it will be one of the other given answers. 
A) 1 
B) 2 
C) 3 
D) 4 
E) ​One cannot tell with certainty when the number is written in the given form,but it will be one of the other given answers.

Question 5

A high fountain of water is in the center of a circular pool of water.You walk the circumference of the pool and measure it to be 190 meters.You then stand at the edge of the pool and use a protractor to gauge the angle of elevation of the top of the fountain.It is 55°.How high is the fountain?

Accepted Answer

A) 25 m 
B) 53 m 
C) 86 m 
D) 43 m 
E) 48 m 
A) 25 m 
B) 53 m 
C) 86 m 
D) 43 m 
E) 48 m

Question 6

​What is the distance between the two polar coordinates (2.0,30°)and (9.0,145°)?

Accepted Answer

A) ​6.0 
B) ​10.0 
C) ​9.8 
D) ​9.2 
A) ​6.0 
B) ​10.0 
C) ​9.8 
D) ​9.2

Question 7

Vector 1 is 7 units long and is at 70°.Vector 2 is 5 units long and is at 155°.Vector 3 is 3 units long and is at 225°.Which vector has equal-magnitude components?

Accepted Answer

A) Vector 1 
B) Vector 2 
C) Vector 3 
D) None of the vectors has equal-magnitude components. 
A) Vector 1 
B) Vector 2 
C) Vector 3 
D) None of the vectors has equal-magnitude components.

Question 8

Which type of quantity is characterized by both magnitude and direction?

Accepted Answer

A) scalar 
B) vector 
C) trigonometric 
D) algebraic variable 
A) scalar 
B) vector 
C) trigonometric 
D) algebraic variable

Question 9

A room in a house has a floor area of 110 ft2.Which of the following is most likely the approximate volume of the room?

Accepted Answer

A) 3 m3 
B) 30 m3 
C) 300 m3 
D) 3 000 m3 
E) ​10 m3 
A) 3 m3 
B) 30 m3 
C) 300 m3 
D) 3 000 m3 
E) ​10 m3

Question 10

If the displacement of an object,x,is related to velocity,v,according to the relation x = Av,the constant,A,has the dimension of which of the following?

Accepted Answer

A) acceleration 
B) length 
C) time 
D) area 
A) acceleration 
B) length 
C) time 
D) area

Question 11

A cereal box has the dimensions of 0.14 m × 0.22 m × 0.070 m.If there are 3.28 feet per meter,then what is the volume of the box in cubic feet?

Accepted Answer

A) 7.6E-2 cubic feet 
B) 2.3E-2 cubic feet 
C) 2.7E-1 cubic feet 
D) 3.9E-3 cubic feet 
E) ​1.3E-2 cubic feet 
A) 7.6E-2 cubic feet 
B) 2.3E-2 cubic feet 
C) 2.7E-1 cubic feet 
D) 3.9E-3 cubic feet 
E) ​1.3E-2 cubic feet

Question 12

Terrence goes for a walk.He walks 2.0 km north,then turns and walks 4.0 km south of east.What is his displacement vector? Take east to be in the +  
-direction and north to be in the +  
-direction.

Accepted Answer

A) (2.0   + 4.0   )km 
B) (2.8   - 0.8   )km 
C) (4.8   + 5.7   )km 
D) (5.7   - 2.8   )km 
A) (2.0   + 4.0   )km 
B) (2.8   - 0.8   )km 
C) (4.8   + 5.7   )km 
D) (5.7   - 2.8   )km

Question 13

Which of the following is an example of a vector quantity?

Accepted Answer

A) velocity 
B) temperature 
C) volume 
D) mass 
A) velocity 
B) temperature 
C) volume 
D) mass

Question 14

Find the sum of the following two vectors: (i)50 units due east and (ii)100 units 30° south of west.

Accepted Answer

A) 100 units 30° south of west 
B) 62 units 54° south of west 
C) 87 units 60° south of west 
D) 62 units 15° south of west 
A) 100 units 30° south of west 
B) 62 units 54° south of west 
C) 87 units 60° south of west 
D) 62 units 15° south of west

Question 15

​Which of the following is not a vector quantity?

Accepted Answer

A) ​mass 
B) ​acceleration 
C) ​displacement 
D) ​velocity 
A) ​mass 
B) ​acceleration 
C) ​displacement 
D) ​velocity

Question 16

On planet Z,the standard unit of length is the foose.Ann the Astronaut is 5.2 feet tall on Earth.She lands on planet Z and is measured to be 88 foosi tall.Her partner Rachael is 92 foosi tall.How tall is Rachael on Earth?​

Accepted Answer

A) 5.9 feet 
B) 5.4 feet 
C) 5.2 feet 
D) 5.1 feet 
E) 5.6​ feet 
A) 5.9 feet 
B) 5.4 feet 
C) 5.2 feet 
D) 5.1 feet 
E) 5.6​ feet

Question 17

Assume when using a meter stick measuring can be done so that the last significant figure is in the tenth of a millimeter digit.If you are measuring an object with length between 6 and 7 cm,how many significant figures will result if you only use the part of the meter stick between the 1-cm and 9-cm positions?

Accepted Answer

A) 2 
B) 3 
C) 4 
D) 5 
E) ​more than 5 
A) 2 
B) 3 
C) 4 
D) 5 
E) ​more than 5

Question 18

A train slowly climbs a 400-m mountain track which is at an angle of 8.0° with respect to the horizontal.How much altitude does it gain?

Accepted Answer

A) 55.7 m 
B) 200 m 
C) 60.7 m 
D) 396 m 
E) ​400 m 
A) 55.7 m 
B) 200 m 
C) 60.7 m 
D) 396 m 
E) ​400 m

Question 19

Note the expression: y = x2.Which statement is most consistent with this expression?

Accepted Answer

A) If y doubles,then x quadruples. 
B) y is greater than x. 
C) If x doubles,then y doubles. 
D) If x doubles,then y quadruples. 
A) If y doubles,then x quadruples. 
B) y is greater than x. 
C) If x doubles,then y doubles. 
D) If x doubles,then y quadruples.

Question 20

​Which is smallest,an atom,a nucleus,a proton,or an electron?

Accepted Answer

A) ​atom 
B) ​electron 
C) ​nucleus 
D) ​proton 
A) ​atom 
B) ​electron 
C) ​nucleus 
D) ​proton

Exam 1: Units, Trigonometry, and Vectors

A physics class in a large lecture hall has 150 students.The total mass of the students is about ____ kg.

The nuclei of atoms contain

When was the existence of the neutron confirmed?

How many significant figures does the number 3 600 have?​

A high fountain of water is in the center of a circular pool of water.You walk the circumference of the pool and measure it to be 190 meters.You then stand at the edge of the pool and use a protractor to gauge the angle of elevation of the top of the fountain.It is 55°.How high is the fountain?

​What is the distance between the two polar coordinates (2.0,30°)and (9.0,145°)?

Vector 1 is 7 units long and is at 70°.Vector 2 is 5 units long and is at 155°.Vector 3 is 3 units long and is at 225°.Which vector has equal-magnitude components?

Which type of quantity is characterized by both magnitude and direction?

A room in a house has a floor area of 110 ft2.Which of the following is most likely the approximate volume of the room?

If the displacement of an object,x,is related to velocity,v,according to the relation x = Av,the constant,A,has the dimension of which of the following?

A cereal box has the dimensions of 0.14 m × 0.22 m × 0.070 m.If there are 3.28 feet per meter,then what is the volume of the box in cubic feet?

Terrence goes for a walk.He walks 2.0 km north,then turns and walks 4.0 km south of east.What is his displacement vector? Take east to be in the + -direction and north to be in the + -direction.

Which of the following is an example of a vector quantity?

Find the sum of the following two vectors: (i)50 units due east and (ii)100 units 30° south of west.

​Which of the following is not a vector quantity?

On planet Z,the standard unit of length is the foose.Ann the Astronaut is 5.2 feet tall on Earth.She lands on planet Z and is measured to be 88 foosi tall.Her partner Rachael is 92 foosi tall.How tall is Rachael on Earth?​

A train slowly climbs a 400-m mountain track which is at an angle of 8.0° with respect to the horizontal.How much altitude does it gain?

Note the expression: y = x2.Which statement is most consistent with this expression?

​Which is smallest,an atom,a nucleus,a proton,or an electron?

Motion in One Dimension

Motion in Two Dimensions

Newtons Laws of Motion

Energy

Momentum, Impulse, and Collisions

Rotational Motion and Gravitation

Rotational Equilibrium and Dynamics

Fluids and Solids

Thermal Physics

Energy in Thermal Processes

The Laws of Thermodynamics

Vibrations and Waves

Sound

Electric Forces and Fields

Electrical Energy and Capacitance

Current and Resistance

Direct-Current Circuits

Magnetism

Induced Voltages and Inductance

Alternating-Current Circuits and Electromagnetic Waves

Reflection and Refraction of Light

Mirrors and Lenses

Wave Optics

Optical Instruments

Relativity

Quantum Physics

Atomic Physics

Nuclear Physics

Nuclear Energy and Elementary Particles

Filters

How many significant figures does the number 3 600 have?

What is the distance between the two polar coordinates (2.0,30°)and (9.0,145°)?

A room in a house has a floor area of 110 ft².Which of the following is most likely the approximate volume of the room?

Which of the following is not a vector quantity?

On planet Z,the standard unit of length is the foose.Ann the Astronaut is 5.2 feet tall on Earth.She lands on planet Z and is measured to be 88 foosi tall.Her partner Rachael is 92 foosi tall.How tall is Rachael on Earth?

Note the expression: y = x².Which statement is most consistent with this expression?

Which is smallest,an atom,a nucleus,a proton,or an electron?