A Flashcards
Measured-accepted/accepted x100
Percent error
d=Vot + 1/2 x a x t^2
Object shot off a cliff
Strong force
Holds nucleus together
Weak force
Breaking down neutron into a proton or electron
fg= m x g
Weight (N)
Mass
Amount if material in an object (kg)
a= gxh/d
Acceleration down a ramp
X2=X1 x (y1/y2)^2
Force of attraction or gravitational field strength
Y= locations X= grav field/force of attraction of location
Fg= GMm/d^2
Grav field strength (bottom must be in metres) (M is one location m is the other)
M= ff/fn
Force of friction (bottom is weight in KG and the top is the amount of force in N)
F=kx
HOOKES LAW (elastic forces) k is spring constant and x is distance stretched IN METERS
What else can represent spring constant
Rise over run on a graph
What is newtons 1st law
Inertia
What is newtons second law
F=ma
What is newtons 3rd law
Action reaction
P=mv
Momentum (measured in kg m/s)
~p= ~mc
Change in momentum
~p= m2v2 - m1v1
F x ~t = m2v2 - m1v1
Change in momentum ( therefore impulse is equal to change in momentum)
M1v1* - m1v1 + m2v2* - m2v2 = 0
Classic railway car problem
W=fd
Work (measured in joules)
What is joules
Newtons per meter
P=w/~t
Power
W=~E
Energy (therefore change or transfer if energy would he ~E=mcx~t)
Rutherford
Nucleus and proton
Chadwick
Neutron
Soddy
Isotopes
Becquerel
Radioactivity
Thompson
Electron
SLAC
Quark
Cern
European counsil of nuclear research
Standard atomic notation
M/A E
3.6x10^8J
1kwh
1000W
1kwh
Gravitational potential energy
~Ep=mg~h (for change from poin A to B) or ep= mgh for one point
Ek=1/2mv^2
Kinetic energy
Efficiency
Useful energy output/energy input x100
Heat energy
Energy that is transferred
Critical mass
Amount of fissionable material necessary to produce a self sustaining chain reaction
What are some moderators
Wayer graphite beryllium
What happened in the squash court
Fermi created the first self sustaining controlled nuclear reaction
Relativity
Times and places when events occur as observed from different points of view
What are the two pronciples of relativity
There is no preffered reference frame and the principle of the consistancy of the speed of light
Michelson Morley experiment?
- wanted to find the either
* found that the speed of light wad constant
Speed of light can be determined using
V=d/t
Who suggested that time is relative
Einstein
Moving clocks run
Slower
p=MoV/[1-v^2/c^2
Relativistic momentum (not on formula sheet) Mo is rest mass.
In the āuā relativistic velocity, what are u, u*, and V
U= velocity of second ship wtrt fixed observer U*= velocity if 2nd ship wrr first ship V= velocity of the first ship wrt fixed observer
In allof the special relativity formulas, what is the left side of the equasion representing
The meaurement as measured bu the fixed reference frame
Frequency
1/T (cycles per second)
Speed of a wave in 2 dif medias
V1/v2 = x1/x2
Crest is the ____ and the trough is the ____
Top bottom
Pinhole camera
Hi/Ho=Di/Do
Gravitational potential energy
Ep=mgh
