Exam 1 review
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C- \n Read through Example 8.6 in Section 8.3 before answering this question: In the
example the text discusses the springs in the heel of the running shoes. Are these springs
considered 'stiff" or "soft" and why?
A. The springs are considered soft because they compress by 1.2 cm during a heel strike
B. The springs are considered stiff because they compress by 1.2 cm during a heel strike
C. The springs are considered stiff because the spring constant is large, almost 300,000 N/m
D. The springs are considered soft because the spring constant is 300,000 N/m, which is a large
number
✅
B- \n In Section 8.3, the text describes Hooke's Law and provides an equation for it (page 253
if you can see page numbers, otherwise, its just above Example 8.6). Reading the equation
from left to right, the three physical quantities shown in the equation are:
A. The restoring force of the spring; the spring constant; and the position of the end of the
spring.
B. The restoring force of the spring; the spring constant; and the displacement of the end of the
spring.
C. The force exerted on the spring; the Boltzmann constant; and the displacement of the end of
the spring.
D. The spring constant; the restoring force of the spring; and the displacement of the end of the
spring.
✅
B- Read Section 8.4 and see if you can answer this question from the description there:
Complete the following statement: Young's modulus and elastic deformation cannot be applied
to understand:
A. how a solid beam bends
B. how a liquid compresses
C. how bones deform
D. how a wire elongates
✅
E- \n In section 8.4, the text provides an equation that relates "Stress" and "Strain". Complete
the following statement: In general, the term stress refers to:
A. a change in length.
B. a change in volume.
C. a fractional change in length.
D. a force per unit length.
E. a force per unit area.
✅
A- Dr. Jones demonstrates the energy transformations in an octopus spring-toy that oscillates
up and down. Imagine that he let the toy continue to oscillate for a long time. The best
explanation of what happens to the oscillations in terms of energy is:
A. All the energy of the toy is transformed into thermal energy and the toy stops oscillating since
it has no more kinetic energy.
✅
C- \n Read through Example 8.6 in Section 8.3 before answering this question: In the
example the text discusses the springs in the heel of the running shoes. Are these springs
considered 'stiff" or "soft" and why?
A. The springs are considered soft because they compress by 1.2 cm during a heel strike
B. The springs are considered stiff because they compress by 1.2 cm during a heel strike
C. The springs are considered stiff because the spring constant is large, almost 300,000 N/m
D. The springs are considered soft because the spring constant is 300,000 N/m, which is a large
number
✅
B- \n In Section 8.3, the text describes Hooke's Law and provides an equation for it (page 253
if you can see page numbers, otherwise, its just above Example 8.6). Reading the equation
from left to right, the three physical quantities shown in the equation are:
A. The restoring force of the spring; the spring constant; and the position of the end of the
spring.
B. The restoring force of the spring; the spring constant; and the displacement of the end of the
spring.
C. The force exerted on the spring; the Boltzmann constant; and the displacement of the end of
the spring.
D. The spring constant; the restoring force of the spring; and the displacement of the end of the
spring.
✅
B- Read Section 8.4 and see if you can answer this question from the description there:
Complete the following statement: Young's modulus and elastic deformation cannot be applied
to understand:
A. how a solid beam bends
B. how a liquid compresses
C. how bones deform
D. how a wire elongates
✅
E- \n In section 8.4, the text provides an equation that relates "Stress" and "Strain". Complete
the following statement: In general, the term stress refers to:
A. a change in length.
B. a change in volume.
C. a fractional change in length.
D. a force per unit length.
E. a force per unit area.
✅
A- Dr. Jones demonstrates the energy transformations in an octopus spring-toy that oscillates
up and down. Imagine that he let the toy continue to oscillate for a long time. The best
explanation of what happens to the oscillations in terms of energy is:
A. All the energy of the toy is transformed into thermal energy and the toy stops oscillating since
it has no more kinetic energy.
