Speaking About Nature
This unit prefix is used to mean one-millionth
What is micro?
If a vector has a positive number next to its i-hat, it's referring to this direction
What is East or +X
The sign you'd give Prof. Austen's velocity as he walks to the right while he yaps
What is positive
Unless otherwise specified, we always assume these TWO measurements are zero
What are x = 0 and y = 0 (initial positions)?
If an object is positively charged, it has a(n) _______ of electrons
What is deficiency (or too few)?
The four SI units introduced in this class
what are meters (m), seconds (s), kilograms (kg), and coulombs (C)
The rule used to get the proper angle for a vector in the 4th quadrant.
What is add 360 degrees
The reason we fall. This is the value we assume for gravity in 1D vertical motion
What is 9.8m/s^2
The top of a projectile's motion is always associated with this value
What is a final vertical velocity of zero (0)?
Discovered by Millikan, this is the charge of a single electron (in coulombs)
What is -1.6E-19C
The value of 350,000mm expressed in kilometers (km)
What is 0.35km?
The x-component of a vector with a magnitude of 12 and a standard angle of 210 degrees.
What is -10.39
The list of 1D variables in the phrase: "Starting 5m to the left of the door, you accelerate from rest at a constant 0.35m/s^2 until you reach the door"
What is xi, xf, vi, and a
The initial vertical velocity of a projectile launched at a speed of 36m/s angled 25 degrees above the ground.
What is +15.12m/s
As if struck by Cupid's arrow, this is the force that 2C charge feels when placed next to a -4.2C charge
What is attractive?
When a dog strides at a rate of 15 miles per hour, this is the distance (IN METERS) covered in 6 minutes.
What is 2400m?
The magnitude of the vector created when 4i + 6j is vector-added to 5i - 18j
What is 15?
The acceleration needed to start from rest at a position 5m to the left and end moving 20m/s to the right at a position 15m to the right.
What is 10m/s^2
The max height of a projectile launched at a speed of 27m/s at an angle of 72 degrees above the horizontal.
What is 33.64m?
The amount AND SIGN of a charge that experiences a repulsive force with a strength of 67 kN (kilo-Newtons) when placed 2cm away from a -3.28C charge.
What is -8.17C
Bacteria can swim at rates of 50 micrometers per second. This is the time it takes an average bacteria to travel 1 millimeter
What is 20s?
Your distance from your starting position after first traveling 10m at an angle of 330 degrees and then following the vector (-5i+3j)m
What is 4.17m?
The time it takes a bouncy ball to come back to its starting position after being thrown straight upward with a velocity of 35m/s.
What is 7.14s?
The horizontal position of a projectile when it reaches a height of 5m above the ground after being launched at a speed of 20m/s angled 68 degrees above the horizontal. Hint: Solve for the time to reach the height first.
What is 2.19m or 26.16m?
The force vector on a 2 micro-Coulomb charge placed at a position of (0i + 0j)cm due to a -5 micro-Coulomb charge at (-5i + 12j)cm.
What is (-2.05i + 4.91j)N?