Current Event: Quarter 1
Felix Baumgartner: The Physics of Supersonic Falling
So to start off this Current Event I will describe what the source is speaking of,
this source is describing Felix Baumgartners physics defying leap from a capsule that
was atta
M =N 2
L=N
21
12
=N 1
i1
i2
( nl ) ( BA )
L
=
= L sol = =0 n2 A
i
i
l
Energy
i final
p=vi= U B=L i
0
2
q
U E=
2C
di 1 2
= Li
dt 2
i q ; L
mem:
1
C
Energy density
B=0
<-solenoid
After 1.2 time constants, energy will be halved.
( 12 Li )= L i =L
( l )2A
Energy of an electron is
quantized.
Band-gap pattern for metal
c)
d)
e)
all electrons and atoms
electrons with energy much less than the Fermi
energy and atoms
atoms and other atoms
Ans: b
What is the mean free time t between collisions for
partially fill
1. Work is equal to the change in kinetic energy.
W = Fd
F = ma
d = (vf2 vi2)/2a
KE = (1/2)mv2
W = Fd = (ma)(vf2 vi2)/2a = (1/2)mvf2 - (1/2)mvi2 = KEf KEi = KE
W = KE
2. W = Fcos()d
As the angle goes up, work done by applied force increases because cos()
1. For an object in UCM, tangential velocity is a constant magnitude with centripetal acceleration
being perpendicular. If a non-zero acceleration was applied parallel to the velocity, the
magnitude of tangential velocity would change.
It took approximate
_
Title: Angle Effects on Projectile Range
_
Abstract: The purpose of this experiment was to determine what angle would give our
projectile the greatest range. Looking at the range equation, we hypothesized that 45-degrees
would give the largest value of
Question 1
4 out of 4 points
The official unit of time in the SI system of measurement is the:
Selected
Answer:
d.
seco
nd
Question 2
4 out of 4 points
An automobile manufacturer claims that its product will, starting from rest,
travel 400 m in 9.0 s. Wha
V = IR
= IV
R = (L)/A
= V2/R
= IV = I2R = V2/R
C = (0A)/d
I = I0e-t/RC
RC = Time Constance = Resistance x Capacitance
F= (Gm1m2)/r2
F = (q1q2)/(40r2)
Resistor
Capacitor
Series = Rf = R1 + R2 + R3.
Parallel = 1/Rf = 1/R1 + 1/R2 + 1/R3
Series = 1/Cf = 1/
Physics Chapter 15 Equations
= m/L
vstring = (Ts/)0.5
vrms = (3kBT/m)0.5
vsound = (kBT/m)0.5 = (RT/M)0.5
t = d/v
c = 3.00 x 108 m/s
v = f
= v/f
t = mv
f = w/2
y(x) = A cos (2 x/)
y(t) = A cos (2 t/T)
y(x, t) = A cos (2 (x/ t/T)*
Wave Speed
Sinusoidal Wa
STP = 0C and 1atm
1atm = 1.015 X 10 5 Pa R=8.31
CHAPTER 12
12.9
Many cultures around the world still use a simple weapon called a blowgun, a tube with a dart that fits
tightly inside. A sharp breath into the end of the tube launches the dart. When exhalin