mechanics
What's a vector?
Something that has both direction and magnitude
What is the energy unit of eV?
1.6 x 10^-19 J
Is a proton attracted to a positive or negative?
Negative
Does frequency change or stay the same?
Stays the same
Fill in the blank: A photon is a particle of -----.
What's something equivalent to mass?
Inertia
What are the units for power?
Joules/second
What is the charge of a neutron?
Neutral !
What's the speed of all electromagnetic waves?
3x10^8 m/s
What force holds electrons near the nucleus?
The electrostatic force
Does weight increase or decrease as you move away from Earth?
Decreases
What is the sum of potential and kinetic energy?
Mechanical energy
What is the direction of a magnetic field defined by?
The direction the needle points
What are all the angles in wave problems measured to?
The normal
What three quarks make up a proton?
UUD
What must an unbalanced force produce?
Acceleration
Fill in the blank: Kinetic energy changes if ------- also changes.
Is an electron attracted to positive or negative?
Positive
Fill in the blank: As the frequency of a wave increases, its wavelength -------.
decreases
What classification of matter is an electron?
A Lepton
What direction do centripetal forces and centripetal accelerations point toward in a circle?
The center
What is the connection between gravitational potential energy and height?
As one increases, the other also increases.
What are selenoids stronger with?
More current
Fill in the blanks: Wave behavior is proven by ------ and -------
Diffraction and interference
What is the lowest energy state of an atom?
The ground state