Adventures of Mr. Hopkins
(not on final)
(not on final)
Weird Physics stuff
(not on final)
(not on final)
Unit 6 Energy
Unit 7 Electricity
Unit 8 Light/Waves
100
What is Mr. Hopkins's dog's name?
Fable
100
What theory of the universe is the basis for films such as The Matrix?
"Simulation Theory"
100
What must be true about the total amount of energy at the beginning and end of a situation?
They must be the same; energy is conserved.
100
What is the difference between a conductor and an insulator?
A conductor allows electrical energy to pass through it but an insulator blocks the flow of electrical energy.
100
What type of doppler shifting does this distant galaxy show?
Red shifting; the galaxy is moving away from Earth
200
Where did Mr. Hopkins go for his bachelors in Mechanical Engineering?
Cal Poly SLO
200
What would happen to the motion of the Earth if the Sun were replaced by a black hole with equal mass?
Nothing would change about the motion.
200
A small rock is dropped off of a bridge into a river below. The moment it is released, what type of energy does it have (what would be our largest bar on the LOL diagrams)?
Gravitational Potential (I will not accept just "potential")
200
What will adding resistors to a circuit in series do to the total resistance?
It will increase the total resistance
200
Why does the image of the tree get flipped (use your particle model of light and include some of the particle properties of light in your explanation)?
You may use a drawing on your whiteboard to help with your explanation.
The light travels in a straight line and is blocked everywhere except on the opposite side of the sheet
300
How long is the longest bike ride Mr. Hopkins has done (answer in miles to the nearest 5 miles)?
60 miles a couple of weeks ago. I am training to do 100 miles for a ride this summer!
300
What do astronomers call the substance that must exist in order to keep fast moving bodies at the edges of galaxies and galactic clusters from flying off into space?
"Dark Matter"
It is exerting a gravitational pull
300
If you triple the mass of a moving object but keep its velocity the same, what happens to the amount of kinetic energy of the object?
you triple the energy
300
What will adding resistors to a circuit in parallel do to the total resistance?
It will decrease the total resistance.
300
How do astronomers look for stars with large planets orbiting them?
They look for planets that have show cyclic doppler shifting.
400
What are all of the classes that Mr. Hopkins teaches this year? (you must give the course title for all 4)
1. Physics/Green Academy Physics
2. Intro to Engineering Design
3. Engineering Design and Development
4. Computer Integrated Manufacturing
400
What do astronomers call the substance that accounts for the accelerating expansion of the universe?
Dark Energy
400
A small rock is dropped off of a bridge into a river below. Some of the energy it had at the start is "lost" because of air resistance as it falls. What type of energy would you represent those "losses" as on your LOL diagram?
Heat or Thermal energy
400
Current flows out of a battery and into two lights in parallel. How does the current coming out of the lights compare to the current coming out of the battery?
It must be the same.
400
Why do most astronomers thing the universe started with "the big bang"?
answer includes:
- Most galaxies appear redshifted, meaning they are moving away
- If things will be spread out more in the future (see point 1 above), that means they must have been closer together in the past.
500
What is Mr. Hopkins doing this weekend (that he doesn't normally do)?
Attending a wedding.
500
What is the breakdown of "stuff" in the universe according to astrophysics (you can round to the nearest 5%)
500
How much energy is stored in a spring that is compressed 0.1 meter and has a stiffness of 10N/m?
0.05 Joules
500
What is the current flowing into the 600Ω resistor? Include units in your answer.
0.02 Amps
500
The length of the blue string below is 0.3 meters long. Waves travel through this string at 248 m/s. What is the frequency of the cord?
1240 Hz