Thermodynamics
In the thermodynamics equation, it is related to an objects temperature
What is the internal energy of a system
The cross product of B, v, and F
and the magnetic field in a current carrying wire
It points towards decreasing potential
What is electric field lines
What is a negative focal length
It is the first law of thermodynamics
What is heat is transferred from hot to cold.
What is Len'z law
The magnetic field generated by a loop of wire either opposing an increasing external magnetic field, or matching a decreasing external field.
Both potential energy and voltage
What are scalar quantities?
Produced by a concave mirror with a focal length of 15 cm and a 8 cm object placed 60 cm in front of the mirror.
A real, inverted image 20 cm in front of the mirror with a height of 2.7 cm
(Reference graph)
It is the work done on the system and the change in internal energy for the gas for the cycle?
W = +4,000J
delta U = 0
What is the magnetic field between two wires with equal current moving in opposite directions?
B=0 at the exact middle
or opposing fields at any distance.
A negatively charged rod briefly touches a neutral metal sphere. After the rod is removed. What is the charge on the sphere and why?
Negative, charging by conduction
Three capacitors 3F, 2F, and 5F are wired in series, what is the equivalent capacitance of the circuit?
Ceq = 0.97 F
(draw ray diagram)
It is related to initial length and change in temperature
What type is thermal expansion
L = (alpha)(Lo)(delta T)
How does a magnetic field create motion for an electric motor?
A 40 N/C field is generated by a charge q at a distance of 0.2m. What would be the new electric field if both the charge and distance were doubled?
What is 20 N/C
Q = 23 C
it is the same for all three capacitors since they are wired in series
Particle ejected during alpha decay
Helium atom
4/2 He
A window's dimensions are 0.65m x 1.25m x 2cm thick and has thermal conduction constant 0.84 J/(sm2C). If there is a 15C temperature gradient across the window, how many joules of heat are transferred out of the window in one hour?
Q/time = kA T/L
Occurs when a moving charged particle experiences an external magnetic field perpendicular to its motion.
What is a circular path?
Why do lightening rods work?
Determine the equivalent resistances for the circuit shown (reference paper)
Req = 42.5 Ohms
Used to determine the work function of a metal
The photoelectric effect equation
hf = K + I