Modern Physics
Unit for electricity
Volts
Difference of velocity and speed
Velocity is speed with direction and speed is the distance over time
2 types of Conservation Laws
Kinetic and potential enery
How strong are alpha particles
They're the weakest and the gamma rays are the strongest
What is Newton's 3rd Law of Motion
Every action there is equal and opposite reaction
efinition of Alpha particle
2 neutrons and protons released
What is quantity of Motion
Momentum
The pendulum 1.5 long is pulled aside to the position where the bob has been raised vertically a distance of 12 cm. If the bob weighs 250 grams calculate the potential energy of the bob before the release.
0.21 J
What is positive charge?
A particle that carries a positive charge
The one who discover 3 laws of motion
Isaac newton
What is planck constant
The ratio of energy of a quantum of electromagnetic radiation to the frequency
If you're travelling into circular track what is contantly changing.
Velocity
What do you need to add to kinetic energy in order to find an object’s mechanical energy?
The distance between the magnetic field lines indicate this.
Strength of the magnetic field
Which has more friction? A. When you go down a slide. B. When you go down the sidewalk on a metal sled. C. When you skate on ice. D. When you swim through water.
B
AS LIGHT STRIKES A SURFACE OF AN OBJECT, WHICH SUBATOMIC PARTICLES ARE EJECTED FROM THE OBJECT?
Electrons
What pulls back to earth
Gravity
The force that makes a roller coaster roll is...
Gravity
What is a magnetic domain
A grouping of atoms that have their magnetic fields aligned
When did Issac Newton died
March 31, 1727
If a critter had 1000 atoms of Carbon-14 when it died and now has 125 C-14 atoms remaining, how long has the critter been dead? The half-life of C-14 is 5730 years.
17,190 years
A push or pull that causes an object to move, stop, or change direction.
Force
The Law of Conservation of Energy states:
Energy cannot be created or destroyed, it can only transformed
What is a ferromagnetic material ?
A material that shows strong magnetic properties.
What is inertia
The tendency of an object to resist a change in motion.