Vocabulary
Vector vs Scalar
A vector has magnitude and direction
A scalar has magnitude
In the absence of air resistance which will hit the ground first when dropped at the same time? A lead ball or a feather?
They will hit at the same time (acceleration due to gravity on Earth is 'g' 9.8m/s^2. It does not matter what the object is)
What happens to the current in a circuit if the voltage is doubled?
Current doubles.
What is the truth table for an AND gate?
A B Q
0 0 0
1 0 0
0 1 0
1 1 1
Convert 17 to binary
10001
a circuit with no load (a circuit with very little resistance)
They hit at the same time (horizontal and vertical motion are independent of each other)
The voltage of a circuit is 9V. The current flowing through the circuit is 4.5A. What is the resistance?
2 Ohms
What is DeMorgans theorm?
(A.B)' = A'+B'
(A+B)' =A'.B'
Convert 1101 to decimal
13
Velocity
How quickly something is moving and in what direction
A person is walking north at 5 m/s directly into a 1 m/s south wind. What is the person's overall velocity?
4 m/s north.
A circuit has two 3 ohm resistors in series. Compared to a circuit that has a single 6 ohm resistor what would the current be through the circuits if both circuits have the same voltage?
The same
Simplify (A+B).(A+C)
A+B.C
How does the speed of a radio wave compare to the speed of red light?
They are the same (3*10^8 m/s)
Linear Regression
a way to model the relationship between an independent and dependent variable by finding the line of best fit
A person walks at 5 m/s north into a 1 m/s wind blowing east. What is the person's overall velocity?
5.1 m/s north east
Click this link https://docs.google.com/document/d/1E9aNZQv9Zcn6BLNi0EUCky1uvnQ_-TD3LPQAthBjcZQ/edit?usp=sharing
What is the current through the 2 ohm resistor?
4A
Simplify (A + B’ + C’).(A + B’ + C).(A + B + C’)
A + B’C’
Describe how electricity can created from magnetism
Move a magnet in the presence of a wire (A change in magnetic field corresponds to a change in electric field *** the relationship is governed by Maxwell's 4 equations, while straightforward they are not easy to describe without multivariable calculus)
Ferromagnets
Can be magnetized with an external magnetic field
Maintain magnetization after the field is removed
Spin is aligned
An object's movement is modeled by a velocity time graph that is an upward sloping line. What is the object's acceleration?
A positive constant (the acceleration is the slope of the line)
Click this link https://docs.google.com/document/d/1E9aNZQv9Zcn6BLNi0EUCky1uvnQ_-TD3LPQAthBjcZQ/edit?usp=sharing
What is the voltage of the battery on the left?
9V
Draw the circuit for: C.(A+B)
Should look like an OR gate with inputs A, B connected to an AND gate with the other input being C
An alpha particle with charge +2e is sent at high speed toward a gold nucleus with charge +79e. What is the electric force acting on the alpha particle when it is 2*10^-14 m away from the gold nucleus?
91N (repulsive)