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 * 3 x 10 8 meters /second
1 light year = 94607
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
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
1. One lightyear is defined to be the distance light can travel in one year.
o
What is this distance in meters?
9.461x1015m=9,461,000,000,000,000m
o
How long does it take for light to get to the Moon
Earth to Moon, 3.8 x 108m / 3.00x108=1.26s
Sun to Moon,
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?
659.78m
2. Up where the ISS (International Space Station) orbits at 387 km, even though they are weightless
there still
5.1 THE NATURE OF THERMODYNAMICS Thermodynamics is concerned with the relationship between the energy changes that occur in chemical and physical processes. In effect, the laws of thermodynamics are the embodiment of the totality of the experimental facts
Lab 6
t = 0.761 seconds
h = y = 0.195 m
v(bullet-calculated) = 99.7 m/s
Initial height = -0.984 m
Maximum height = - 0.789
so height achieved = -0.789 (-0.984) = 0.195 m
Velocity of bullet can be calculated by formula
v=
mM
m
2 gh
0.001 0.050
2 * 9.8 * 0
Ball Position
A
B
C
D
E
F
PE (J)
0.028
0.548
0.329
0.198
0.442
0.006
KE (J)
0.575
0.055
0.274
0.405
0.16
0.596
TE or E (J) m = .01 (kg)
0.603
0.603
0.603
0.603
0.602
0.602
Ball Position
A
B
C
D
E
F
PE (J)
0
5.391
3.662
2.138
4.162
0.045
KE (J)
6.031
0.638
Lab 4
Data Tables & Short Answers:
Fill in the charts below:
Ball Position
A
B
C
D
E
F
PE
0.60
0.05
0.25
0.40
0.16
0.60
KE
0.00
0.55
0.35
0.20
0.44
0.01
TE or E
0.60
0.60
0.60
0.60
0.60
0.60
Is total energy (T.E.) conserved in every case (within experimen
Lab 5
Weightyou=
107 Kg
Workyou =
10447 J
Poweryou =
950 Wat
Poweryou(in kW) =
.9497 kWh
Money that this climb is worth =
Money that climbing for an hour is worth =
$0.0002
$0.86
235lbs
Work = mgh, 107*9.8*10
Power = work/time (11 Seconds)
kW = Power/1000
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