AnswersTX-Physics CRCumulative Exam

Cumulative Exam — Cumulative exam Answers

0 verified answers2 views
43
Free Preview

Why is it advisable to wear long sleeves when students work in a chemistry lab?

A
to provide warmth near the lab refrigerator
B
to protect the arms from lab chemicals
C
to minimize burns from hot water at the lab sink
D
to prevent burns when using a Bunsen burner
44
Free Preview

What is the horizontal acceleration of a ball that is launched horizontally with a velocity of 5.6 m/s?

A
–9.8 m/s2
B
0 m/s2
C
5.6 m/s2
D
9.8 m/s2
45

Which is an example of conduction?

A
Soup is warmed in a microwave oven.
B
A hand is burned when touching a pot handle.
C
Air above an ocean warms up and rises.
D
A stone gets hot from sitting outside on a sunny day.
47

A stretched spring has 5184 J of elastic potential energy and a spring constant of 16,200 N/m. What is the displacement of the spring?

A
0.57 m
B
0.64 m
C
0.80 m
D
1.25 m
48

In which scenario is the greatest amount of work done on a wagon?

A
A force of 55 N moves it 8 m.
B
A force of 60 N moves it 6 m.
C
A force of 50 N moves it 5 m.
D
A force of 40 N moves it 10 m.
49

In a lab experiment, a student is trying to apply the conservation of momentum. Two identical balls, each with a mass of 1.0 kg, roll toward each other and collide. The velocity is measured before and after each collision. The collected data is shown below.Which trial shows the conservation of momentum in a closed system?

Question illustration
A
Trial 1
B
Trial 2
C
Trial 3
D
Trial 4
50

Which is the best example of kinetic energy?

A
A picture of a field of flowers in the sunlight.
Option A
B
A picture of an owl sitting on a branch.
Option B
C
A picture of a dog running.
Option C
D
A picture of some rocks sitting on grass.
Option D

Did you find these answers helpful?

More from this Course

Assignment
22 verified answers

Lab: Circuit Design

Assignment
22 verified answers

Lab: Circuit Design

Quiz
16 verified answers

Unit Test