Cory Poynter
Homework May 4
16-2, 3, 7, 9, 12, 15, 22, 35
2)
yx,t=.8msin(.628x-vt)
Velocity (v) = 1.20m/s
a)
t= 0
yx,t=.8msin(.628x)
b)
t = 2s; v = 12m/s; so that vt= 2.4m
yx,t=.8msin(.628x-2.4m)
The differences between picture a & b:
The distance between
General Physics III
Homework Assignments
Cory poynter
17- 33, 34, 35, 37, 53, 54
Speed of observer vo=25 m/s
33)
Speed of source vs=40 m/s
Frequency (f) = 2500Hz
Speed of sound (v) = 343m/s
Maximum sound level max=60dB
a) f1= v-vov-vsf
b)
c)
= 343+25343-4
General Physics III
Homework Assignments
Cory poynter
18-1, 7, 11, 14, 18, 21 and Chapter 34 Question 12 and Problem 11
1)
a) y1=3cos4x-1.6t
y2=sin(5x-2t)
x = 1cm
t = 1s
y= y1+ y2
=3cos4x-1.6t+ 4sin(5x-2t)
=3cos4 x 1-1.6 x 1+ 4sin(5 x 1-2 x 1)
=-2.212+ .5
q
General Physics III
poynter
F
I0
p
f
Section # 1
x
Homework Assignments
Cory
5/22/2009
Problems 35-1, 7, 9, 21, 26, 32, 34; 36-3, 6, 9, 12, 29, 33
Chapter 35
1)
Radius of Moon (Rm) = 1.74 x 106m
Radius of Earth (Re) = 6.37 x 106m
Center to center (S) =
General Physics III
poynter
Homework Assignments
Cory
Homework Due Date: April 6
Problems: 19-10, 23, 25, 34, 41, 54
10)
Original temperature of ring Tr= 20C
Original diameter of the inside of ring Lr=5cm
Diameter of rod L=5.05cm
Linear expansion =24 x 10
General Physics III
poynter
Homework Assignments
Homework Due Date: April 13
Problems: 20-6,9,15,23,26,33,35,52
6)
aluminum cup (ma) = 200g
Specific heat of aluminum (ca) = 900 J/kgC
Water (mw) = 800g
Specific heat of water (cw) = 4186 J/kgC
Starting temp
General Physics III
Homework Assignments
Cory poynter
21- 4, 11, 19, 26, 28, 43, 45, 59
4)
Time t = 1s
Number of nitrogen molecules (N) = 5 x 10^23
Mass of one mole(m) = 4.68 x 10^-26 kg
Velocity vi = 300m/s
Area of wall (A) = 8 x 10^-4 m^2
Average force
Cory Poynter
Due 04/27/09
22-2, 11, 12, 21, 48,55,57,59
2)
Mass of the gun M = 1.80kg
Mass of the bullet m =2.40g
Speed of the bullet u = 320m/s
Energy of bullet =1.10
Ciron = 448 J/kgC
K= 12mu2
K= 12(.0012)320m/s2
K= 122.88J
K= 1.10100T
T= 1.10100122.88J
General Physics III
Spring 2009
Brian T. Meadows (2009)
Home Work Assignments
Date Due
Problems
Sample Solutions
April 6
19-10, 23, 25, 34, 41, 54
1
April 13 20-6, 9, 15, 23, 26, 33, 35, 52
2
April 20 21- 4, 11, 19, 26, 28, 43, 45, 59
3
April 27
TBA
4
May