course MTH 164
......!!!!!!!!................................... 22:24:52
......!!!!!!!!...................................
RESPONSE --> distance bwtween peaks will be 2pi/3 maximum vertical point will be 12+r minumum vertical point wil be 12-r confidence assessment: 3
.................................................
......!!!!!!!!...................................
22:34:18 Given the values between which a cyclical quantity varies, how you determine where to position the circle that models the quantity, and how the determine the radius of the circle?
......!!!!!!!!...................................
RESPONSE --> the circle will be centered at halfway between the maximum and minimum, the radius will be half the difference between the maximum and minimum. confidence assessment: 3
.................................................
......!!!!!!!!...................................
22:41:12 What is the vertical coordinate of the center of the circle, and what is the angular velocity of the reference point, for the daylight model?
......!!!!!!!!...................................
RESPONSE --> I an assuming this refers to the exercise at: http://www.vhcc.edu/pc2fall9/lectures/980114/class_exercise.htm The vertical coordinate of the center of the circle will be at 12, assuming the max and min vertical points are 15 and 9. The angular velocity of the reference point will be 2pi/12 or pi/6, which will have the circle complete every 12 cycles, representing the 12 months. confidence assessment: 3
.................................................
......!!!!!!!!...................................
22:44:01 What is the vertical coordinate of the center of the circle, and what is the angular velocity of the reference point, for the temperature model?
......!!!!!!!!...................................
RESPONSE --> The vertical coordinate of the center of the circle will be (75 - 35)/2 or 40/2 or 20. The angular velocity of the reference point will be 2pi/52 or pi/26 which will make 52 points 1 for each ween in a year. confidence assessment: 3
.................................................
......!!!!!!!!...................................
22:45:57 What is the vertical coordinate of the center of the circle, and what is the angular velocity of the reference point, for the tide model?
......!!!!!!!!...................................
RESPONSE --> The vertical coordinate of the center of the circle will be -5. The angular velocity of the reference point will be 2pi/10 or pi/5. confidence assessment: 3
.................................................
......!!!!!!!!...................................
22:48:33 What is the vertical coordinate of the center of the circle, and what is the angular velocity of the reference point, for the ocean wave model?
......!!!!!!!!...................................
RESPONSE --> The vertical coordinate of the center of the circle will be 38. The angular velocity of the reference point will be 2pi/(60/5) or 2pi/12 or pi/6 which will have 1 cycle every 12 seconds. confidence assessment: 3
.................................................
......!!!!!!!!...................................
23:01:37 query ch. 5 # 78 15 in wheels at 3 rev/sec. Speed in in/s and mph: rpm?
......!!!!!!!!...................................
RESPONSE --> I believe you are referring to a different book. I have Precalculus, seventh edition, by Sullivan. I found the problems listed at: http://www.vhcc.edu/pc2fall9/frames%20pages/ch%205%20problems/chapter_5.htm r = 15, 3 revolutions per second 2pi15*3 in/sec 2pi45 in/sec pi90 in/sec 3.14*90 in/sec 282.6 in/sec 23.55 ft/sec 1413 ft/min 84780 ft/hr 16.01 mi/hr This should be correct unless I got lost in the conversions. confidence assessment: 2
.................................................
......!!!!!!!!...................................
23:05:00 Explain your solution to this problem.
......!!!!!!!!...................................
RESPONSE --> Oh, ok. radius times 2 pi = circumference the car is moving at circumference * 3 revolutions per second, so 2pi * 15*3/ second. The rest was simplyfing and converting into MPH. confidence assessment: 3
.................................................
......!!!!!!!!...................................
23:10:46 Comm on any surprises or insights you experienced as a result of this assignment.
......!!!!!!!!...................................
RESPONSE --> I was actually trying to work on Assignment 0, but i couldn't enter 0 into this program. I entered 1, like I did with the q_a program. All the references I found in this were to assignment 1. Also the question at the end i had to find online as it does not match up with my book at all. This was all a bit frustrating at first, but most likely I have overlooked something again. I'm enjoying the course so far, I'm understanding all the content. confidence assessment: 3
.................................................
"