1. A 0.600-kg piece of metal is heated to 100C and placed in an aluminum can of mass 0.200-kg
which contains 0.500 kg of water initially at 17.3C. The final equilibrium temperature of the
mixture is 20.2C, what is the specific heat of the metal?
B) 140 J/
The internal energy decreases by the amount equal to the heat of vaporization of the water vapor. Heat
energy has left the water vapor which makes it condense and then heat energy is transferred to the
water inside the glass causing it to become warmer. N
PH220
Week 8 Assignment
Grantham University
Week-8 Assignment
#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. (25 Points)
How much heat was added to the gas?
Q = U + W
U = 0
#1. A diamond has a mass of 56.6 g and the gold ring in which it is set has a mass of 125.6 g.
How many carbon atoms are there compared to gold atoms? (10 points)
Carbon
56.6g / 12 g/mol = 4.72mol
Gold
125.6g / 197 g/mol = 0.63mol
#2. On a warm summer day
The real spring has mass, which is greater than the mass oscillating at the end of an ideal spring results in
a smaller frequency, as the frequency is inversely proportional to the given mass
F = (1/2) * (k/m)
The frequency will be smaller than that of an
The reason steam has more heat, in the same amount of mass, is because water takes on additional heat
to change from its liquid state into its gas state. Up to 100 C the heat raises the temperature of the
water. At 100 C, when the water changes to steam,
PH220
Week 5 Assignment
Grantham University
Week-5 Assignment
1. A street light is supported by two 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
1.
net speed = 3cos(55)i +(3sin(55)-2)j
=1.72i+.46 j
net velocity = 1.78 m/s
direction=14.97 degree N of west
2.
D = sqrt(50000^2+2100^2+1500^2) = 50066.56m or 500.67 km
Angle with X-axis = 90 + acos(2100/50066.55) = 177.6 deg
Angle with Y = 90 + acos(150
1
#1. One lightyear is defined to be the distance light can travel in one year. (10 points)
What is this distance in meters?
9.4607 1012 km, 1km = 1 x 103m
9.4607 x 1012 x 1 x 103 = 9.4607 x 1015 m
How long does it take for light to get to the Moon from t
4
#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?
(10 points)
m1*v1 = (m1 + m2)* v
4500kg * 12.4m/s = (4500kg
#1. A 5600kg 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? (10 points)
f=mv^2/r= 44000=5600*72^2/r
r=659.782 m
#2. Up where the ISS (International Space Station) orbits at 387 km
#1. A spring with negligible mass stretches 34.0 cm when a 144gram 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? (10 points)
kx = mg
k = (.144kg*9.81m/s2)/.34m
Lab Project Answer Sheet
Name: Lucky Ekukpe
Student # G00119310
E-mail address: [email protected]
Lab 7
Red
Blue
A = -0.009m
A = -0.046m
T = 1/f =
T = 1/f =
T = 3.640s
T = 2.140s
f = 0.275Hz
f = 0.467Hz
= 3.460m
= 3.060m
v = * f = 0.9525m/s
1.42902m/
1. Mass of diamond md = 56.6g
Mass of gold mg = 125.6g
Number of carbon atoms n = Number of moles * Avogadro Number N A
Mass of diamond md
56.6 g
Number of moles for carbon atoms = Molar mass of Carbon = 12 g/ mol = 4.72mol
n = (4.72mol) * (6.023 x
n = 28
Lab Project Answer Sheet
Lab 1
Data Table and Graph
Data Table EXP #! C1
Distance VS TIME data table and Graph
Instantaneous Velocity VS TIME data table and Graph
Instantaneous Velocity =
(Y/X) = (0.250m -0.050m) / (0.25s - 0.05s) =
1.000m/s
X
Time (sec)
Week 6 Assignment
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?
kx = mg
k = .144*9.81/.34
w
Week 4 Assignment
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?
m1*v1 = (m1 + m2)* v
4500*12.4 = (4500 + 6700
Week 4 Lab
In this simulation, an object traverses the hills and valleys of a frictionless roller
coaster in the realm of zero air resistance. You will be asked to find measurements and
make calculations concerning total mechanical energy and whether it i
Week 3 Lab Atwoods Machine
For Lab 3, please review Chapter 4 in your textbook. Lab 3 involves Atwoods Machine.
In this simulation m1 is 1.0 kg and m2 is 1.1 kg. Mass m2 is 1.1 kg. Mass m2 rests on the floor that
exerts a normal force, FN, on m2 g =). The
Week 2 Assignment
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 o
Week 3 Assignment
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?
F=
mv
r
2
2
m v 2 5600( 72 )
r=
=
=659.78 m
F
44000
659.78m
2. Up where the ISS (International Space
Week 8 Assignment
The Law of Thermodynamics
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 = 331.2
Week 1 Assignment
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 * 3 x 108 meters /second
1 light year = 9460730472580800 meters ~ 9.46 x 1015 meters
Week 5 Assignment
Static Equilibrium and Fluids
1. A street light is supported by two 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 st