Engineering

Engineering 111 - Homework 2

Instructions: Complete this form and click submit. The answers and grades will be posted on the course home page after the due date. If you want to change any of your answers after you click submit, then go back and fill in all of the text boxes again and click submit. Check your spelling and use capital letters when appropriate.

Your Name: e.g. John Doe

Your Campus ID: e.g. 12345678

Your SFA Email Address: e.g. doejd@titan.sfasu.edu

Due Date 9/12/2007 5:00PM

Problem 2.1(a) (Type 1 word)

Problem 2.1(b) (Type 1 word)

Problem 2.1(c) (Type 1 word)

Problem 2.1(d) (Type 1 word)

2. Work Problem 3.5. Give units on your answer.
Hint: Label the depth of the water 'd' in your sketch. Then label the length of the diagonal line r and then write r in terms of d and 10cm. Next use the Pythagorean Theorem that is printed on the first page of Homework 2. Solve for d.

3. Work Problem 3.19. Describe the shape of each area of land in the box to the right.

4. Work Problem 3.25. Give units on your answer.
Hint: N = V_Log/V_Toothpick
Assume that the volume of a log and the volume of a toothpick is given by the volume of a cylinder provided on the first page of Homework 2.
Note: For your answer to the right, you must use the following dimensions.
R=1.5ft
H=20ft
r=1/16 inch
h=2 inches
1 foot=12 inches

5. Work Problem 3.34. Give the total amount for all students at SFA for a Fall semester. Hint: Layout the ratios below side by side in a way that everthing cancels except "$/semester". Note that the number of students below is not a ratio.
Note: For your answer to the right, you must use the following:
There are 15 weeks per semester.
There are about 11,000 students at SFA the Fall.
Assume that the cost is $7 per meal per student.
Assume that students have 7 fast food meals per week on average.

6. Work Problem 3.37. Express your answer in hours in the blank to the right. Hint: Use the circumference of the Earth found in Table 3.2 of your book. Mach 1 is the speed of sound which is 340 m/s. Note: For your answer to the right, you must use the following:
Assume that the plane also stops 2 hours for refueling.

7. Work Problem 3.22.
Note: For your answer to the right, you must use the following: Assume that Larry and Flourence both run 20 yards/second with no wind. Who wins? By how many seconds?

Optional Comments:

Your Name:	e.g. John Doe
Your Campus ID:	e.g. 12345678
Your SFA Email Address:	e.g. doejd@titan.sfasu.edu

Due Date	9/12/2007 5:00PM
Problem 2.1(a) (Type 1 word)
Problem 2.1(b) (Type 1 word)
Problem 2.1(c) (Type 1 word)
Problem 2.1(d) (Type 1 word)
2. Work Problem 3.5. Give units on your answer. Hint: Label the depth of the water 'd' in your sketch. Then label the length of the diagonal line r and then write r in terms of d and 10cm. Next use the Pythagorean Theorem that is printed on the first page of Homework 2. Solve for d.
3. Work Problem 3.19. Describe the shape of each area of land in the box to the right.
4. Work Problem 3.25. Give units on your answer. Hint: N = V_Log/V_Toothpick Assume that the volume of a log and the volume of a toothpick is given by the volume of a cylinder provided on the first page of Homework 2. Note: For your answer to the right, you must use the following dimensions. R=1.5ft H=20ft r=1/16 inch h=2 inches 1 foot=12 inches
5. Work Problem 3.34. Give the total amount for all students at SFA for a Fall semester. Hint: Layout the ratios below side by side in a way that everthing cancels except "$/semester". Note that the number of students below is not a ratio. Note: For your answer to the right, you must use the following: There are 15 weeks per semester. There are about 11,000 students at SFA the Fall. Assume that the cost is $7 per meal per student. Assume that students have 7 fast food meals per week on average.
6. Work Problem 3.37. Express your answer in hours in the blank to the right. Hint: Use the circumference of the Earth found in Table 3.2 of your book. Mach 1 is the speed of sound which is 340 m/s. Note: For your answer to the right, you must use the following: Assume that the plane also stops 2 hours for refueling.
7. Work Problem 3.22. Note: For your answer to the right, you must use the following: Assume that Larry and Flourence both run 20 yards/second with no wind. Who wins? By how many seconds?