1.A spring with negligible mass stretches 34.0 cm when a 144 g gram mass i
s suspended from it. Now I suspend a mass m from the spring. If it oscillates
at an angular frequency of 4.51 rad/s, what is the mass?
kx = mg
k = .144*9.81/.34
w = sqrt(k/m)
4.51^
1.A diamond has a mass of 56.6 g and the gold ring it is set in has a mass of
125.6 g. How many carbon atoms are there compared to gold atoms?
number of carbon atoms=6*10^23*56.6/12
=2.83*10^24 atoms
number of gold atoms=6*10^23*125.6/197
=3.825*10^23 ato
1.A 10.0 cm radius piston compresses a gas isothermally from a height of 15.
0 cm to 2.50 cm at a constant pressure of 2.0 atm.
W = PdV = 2*(3.14* 0.1^2 * 0.15 - 3.14*0.1* 0.025)
W =331.25 J
dQ = dU + dW = 331.25 J
2.Sketch a PV diagram for the following
1. A street light is supported by two vertical wires and each makes a different angle
from each other. The one on the left is 32 degrees and the one on the right is 43
degrees. Find the tension in each wire if the street light has a mass of 60.0 kg.
T1*si
Week-6 Assignment
Vibrations, Waves, and Sound
1. A spring with negligible mass stretches 34.0 cm when a 144 g gram mass is
suspended from it. Now I suspend a mass m from the spring. If it oscillates at an
angular frequency of 4.51 rad/s, what is the mass
1. A ship has a top speed of 3.0 m/s in calm water. The current of the ocean tends to push
the boat at 2.0 m/s on a bearing of due South. What will be the net velocity of the ship if
the captain points his ship on a bearing of 55 North or West and applies
Lab 4
Data Tables & Short Answers:
Fill in the charts below:
Ball Position
-3.66,3.02
-.77,.27
.69,1.37
1.93,2.02
3.57,.80
3.77,2.97
PE
.60J
.05J
.27J
0.4J
.16J
0.59J
KE
0J
.55J
.33J
0.2J
.44J
.01J
TE or E
.60J
.60J
.60J
.60J
.60J
.60J
Is total energy (T.
Chap. 1, #1.
The age of the universe is thought to be about 14 billion years. Assuming two significant figures,
write this in powers of ten in (a) years, (b) seconds.
(a) 1.4 10 Years
10
(b) 4.4 17 seconds
10
Chap. 1, #9.
Multiply 2.079 2 m by 0.082 1 , t
PH220
Week 8 Assignment
Grantham University
Week-8 Assignment
The Law of Thermodynamics
1. A10.0cmradiuspistoncompressesagasisothermallyfromaheightof15.0cmto2.50cm
ataconstantpressureof2.0atm.
W=PdV=2*(3.14*0.1^2*0.153.14*0.1*0.025)
W=331.25J
dQ=dU+dW=331
PH220
Week 3 Assignment
Grantham University
Week-3 assignment;
Circular Motion, Gravitation, and Work and Energy
1. A 5600 kg mass car is taking a turn at 72 m/s. If the frictional force here is 44,000N,
what is the radius of curvature of the turn?
So the
PH220
Week 1 Assignment
Grantham University
Week-1 assignment;
Introduction, Measurement, Estimating
1. One lightyear is defined to be the distance light can travel in one year.
o
What is this distance in meters?
1 light year = 365 days * 86400 seconds *
PH220
Week 2 Assignment
Grantham University
Week-2 assignment;
Kinematics in Two Dimensions; Vectors and Dynamics: Newton's Laws of Motion
1. A ship has a top speed of 3.0 m/s in calm water. The current of the ocean tends to push
the boat at 2.0 m/s on a
Linear Momentum and Rotational Motion
1.
A rail car of mass 4500 kg is moving with a velocity of 12.4 m/s collides with a stationary rail car of mass
6700 kg. What is the velocity of the two cars if they stick after they collide?
2.
A tennis player hits a
Lab Project Answer Sheet
Name: _
E-mail address: _
Lab 2
Excel Data Table: (To be supplied by student)
= _
R (at v0 = 10 m/s & g = 10m/s2) = _
Graph of R (y-axis) vs. : (To be supplied by student)
Student # _
Lab 3
T (at t = 2.54 s) = _
FN = _
Lab 4
Data