Theme D Flashcards
Keplers first law of orbital motion
Planets orbit in ellipses with the sun at one of the focus points
Keplers Second law of orbital motion
A line segment from the sun to a planet sweeps area at a constant rate
Kepler’s third law of orbital motion
The square of the orbital period of a planet is proportional to the cube of the semi-major axis of its orbit.
Where:
T = period
a = semi major axis (half of the longest ellipse cord)
Law of universal gravitation
Force of attraction between 2 point masses m. G is gravitational constant
Formula for gravitational field strength
gravitational force per unit mass that would act on a test mass in the field created by the source M
The units are Nm^-1 which is equivalent to ms^-2
Law of conservation of charge
Three main ways to electrically charge a body
What is grounding
Polarizing
Coulombs inverse square law
Coulombs constant
Electric field strength
volts per meter
Electric potential difference formula
Electric field strength
Which way do magnetic fields go
North to south
Right hand rule
Magnetic force per unit length
Magnetic field strength unit
Magnitude of magnetic force on current
Magnetic force on a single charge
