Physics
What is the velocity of a car that traveled 35mi in 15minutes? (units count)
2.3mi/min
What is the energy transformation of a toaster?
Electrical --> Thermal
List the three types of thermal energy?
conduction, convection, radiant.
List all 3 of Newton's Laws.
1st Law of inertia
2nd Law of acceleration
3rd Law of action/reaction
What type of reaction is this? Ax + B --> A + Bx
single
A meteor traveling 20m/s with a mass of 15,000kg. What is the kinetic energy of the meteor? (units count)
3,000,000J
What is the energy transformation of a microwave?
Electrical --> Radiant or/and Thermal
What type of thermal energy is when a pan heats up on the stove?
conduction
Which Newton Law is when you jump off a diving board?
3rd Law of action/reaction
What type of energy is an archer with his bow drawn?
potential
What is the difference between velocity and speed?
Velocity has vectors and direction, speed does not.
What is the energy transformation of a cellphone?
What is thermal conduction?
heating by direct contact
Which Newton Law is when you have to peddel on your bike faster because your friend is on the back?
2nd Law of acceleration
What is the potential energy of a rock 10m high with a mass of 5kg. (g = 10m/s/s) units count
500J
What is the displacement of a runner who ran 20m east, then 12m west?
8m
What is the energy transformation of a nuclear powerplant powering a house?
Nnuclear --> Thermal --> Mechanical --> Electrical --> Radiant
What type of thermal energy is in the formation of clouds?
convection, radiation
How much force is in a baseball moving 10m/s with a mass of 0.5kg? (units count)
5N
When a solution becomes more acidic, its pH will____?
decrease
What happens to our kinetic energy if we double our velocity?
kintetic energy is quadrupled, 4x greater.
What is the enery transformation of a self-winding watch (no batteries)?
Mechanical potential or Elastic --> Mechanical kinetic
The heat island effect is made by what type of thermal energy(s)?
All 3: convection, conduction, and radiation
What is the acceleration of a train with a mass of 500,000kg with a force of 2,500,000N? (units count)
5m/s/s
More acidic solutions or liquids have a pH of?
6 and less