Question 1

Magnetic hysteresis reflects the change in the magnetization, M, vs. applied field, H, when the applied field is increased then decreased in a cyclic fashion. The area between the M vs. H curves for increasing and decreasing H is related to the energy needed to take the material through the cycle. Use Simpson's rule on the M vs. H behavior listed in the table to calculate the area between the curves for the different directions of change of H.

Accepted Answer

A)  0.210 
B)  0.123 
C)  0.083 
D)  0.165

Question 2

Use the best method available to find the volume of the solid formed by revolving the region bounded by the y-axis,   and  about the y-axis. Write the integral that is used to find the volume.

Accepted Answer

The answer of Use the best method available to find...

Question 3

An object propelled from the ground with an initial velocity of 50 ft/s will reach a maximum height of 39.1 ft. If the initial velocity is increased 18%, by what percentage will the maximum height increase? Round percentages to the nearest integer.

Accepted Answer

A)  18% 
B)  39% 
C)  3% 
D)  28%

Question 4

Identify the initial conditions y(0) and y'(0) for the vertical motion of an object , if the object thrown downward at a velocity of 6 feet per second from a height of 30 feet. [Take the origin to be on the ground.]

Accepted Answer

A)  y(0) = 30, y'(0) = -6 
B)  y(0) = 0, y'(0) = -6 
C)  y(0) = 30, y'(0) = 6 
D)  y(0) = 0, y'(0) = 6

Question 5

Identify the integral used to determine the surface area of the surface of revolution for the shape described by  ,  , revolved about the x-axis.

Accepted Answer

A)   
B)   
C)   
D)

Question 6

Identify the graph and area of the region bounded by the curves  . Use only one integral. The figures below are not necessarily to scale.

Accepted Answer

A)    
B)    
C)     
D)

Question 7

Use Simpson's Rule to estimate the volume of the shape obtained by revolving the cross-section given in the table about the y-axis.

Accepted Answer

A)  43 
B)  268 
C)  3899 
D)  421

Question 8

In a movie stunt, a car is driven off a cliff and falls into the ocean 200 feet below. If the car is going 50 feet/second (horizontally) when it goes over the cliff, its horizontal position is described as x = 50 t, where t is the time in seconds. Its vertical position is described as y = 16 t2, where y is the distance below the cliff (i.e. y = 200 when the car hits the ocean). Compute the length of the path traversed by the falling car. Round to the nearest foot. [Hint: The two equations will need to be combined, eliminating t so that y is expressed as a function of x.]

Accepted Answer

A)  274 feet 
B)  279 feet 
C)  284 feet 
D)  289 feet

Question 9

Let R be the region bounded by  , the x-axis, and the y-axis. Compute the volume of the solid formed by revolving R about the x-axis.

Accepted Answer

A)   
B)   
C)   
D)

Question 10

Compute the volume of a solid formed by revolving the region bounded by

Accepted Answer

A)   
B)   
C)   
D)

Question 11

Identify the graph and the area of the region determined by the intersections of the tabulated curves using Simpson's Rule.

Accepted Answer

A)    
B)    
C)    
D)

Question 12

When a certain spring is stretched 0.10 m, 4  of work is done. What is the spring's "spring constant"?

Accepted Answer

A)  800.0 N/m 
B)  400.0 N/m 
C)  40.0 N/m 
D)  20.0 N/m

Question 13

A baseball pitcher releases the ball horizontally from a height of 5 ft with an initial speed of 140 ft/s. Find the height of the ball when it reaches home plate 60 feet away. Round to two decimal places. (Hint: Determine the time of flight from the x-equation, then use the y-equation to determine the height.)

Accepted Answer

A)  2.33 ft 
B)  2.06 ft 
C)  3.67 ft 
D)  2.67 ft

Question 14

Use two straight line segments to estimate the length of the line segment described by the function  from  . Choose x = 0 as the middle point.

Accepted Answer

A)  3.02 
B)  3.07 
C)  3.12 
D)  3.17

Question 15

Find the median of x, given the pdf  ,  . [Hint: Do not waste time trying to find an analytic solution. Once you determine the expression you would like to solve, just identify which of the choices is close to the correct answer.]

Accepted Answer

A)  4.000 
B)  0.336 
C)  0.420 
D)  8.392

Question 16

Find the value of c which will make the function  a pdf on the interval  .

Accepted Answer

A)  none, since the cosine can be positive or negative 
B)   
C)   
D)

Question 17

Identify the graph and the area bounded by the curves

Accepted Answer

A)  area = 5/3  
B)  area = 1/6  
C)  area = 1/3  
D)  area = 1/3

Question 18

Sketch and find the area of the region determined by the intersections of the curves.

Accepted Answer

The answer of Sketch and find the area of the...

Question 19

When pumping water out of a full hemispherical basin with radius r feet, how far down will the water level be when 1/5 of the work has been done? [The density of water is 62.4 lbs/ft3.]

Accepted Answer

A)   
B)   
C)   
D)

Question 20

Let R be the region bounded by  , the x-axis, and the y-axis. Compute the volume of the solid formed by revolving R about the y-axis.

Accepted Answer

A)   
B)   
C)   
D)

Exam 6: Applications of the Definite Integral

Use the best method available to find the volume of the solid formed by revolving the region bounded by the y-axis, and about the y-axis. Write the integral that is used to find the volume.

An object propelled from the ground with an initial velocity of 50 ft/s will reach a maximum height of 39.1 ft. If the initial velocity is increased 18%, by what percentage will the maximum height increase? Round percentages to the nearest integer.

Identify the initial conditions y(0) and y'(0) for the vertical motion of an object , if the object thrown downward at a velocity of 6 feet per second from a height of 30 feet. [Take the origin to be on the ground.]

Identify the integral used to determine the surface area of the surface of revolution for the shape described by , , revolved about the x-axis.

Identify the graph and area of the region bounded by the curves . Use only one integral. The figures below are not necessarily to scale.

Use Simpson's Rule to estimate the volume of the shape obtained by revolving the cross-section given in the table about the y-axis.

Let R be the region bounded by , the x-axis, and the y-axis. Compute the volume of the solid formed by revolving R about the x-axis.

Compute the volume of a solid formed by revolving the region bounded by

Identify the graph and the area of the region determined by the intersections of the tabulated curves using Simpson's Rule.

When a certain spring is stretched 0.10 m, 4 of work is done. What is the spring's "spring constant"?

Use two straight line segments to estimate the length of the line segment described by the function from . Choose x = 0 as the middle point.

Find the median of x, given the pdf , . [Hint: Do not waste time trying to find an analytic solution. Once you determine the expression you would like to solve, just identify which of the choices is close to the correct answer.]

Find the value of c which will make the function a pdf on the interval .

Identify the graph and the area bounded by the curves

Sketch and find the area of the region determined by the intersections of the curves.

When pumping water out of a full hemispherical basin with radius r feet, how far down will the water level be when 1/5 of the work has been done? [The density of water is 62.4 lbs/ft³.]

Let R be the region bounded by , the x-axis, and the y-axis. Compute the volume of the solid formed by revolving R about the y-axis.