Vocabulary
It measures how long it takes for half of the unstable atoms in a radioactive substance to undergo decay and transform into a different, more stable nucleus.
What is half-life
A 80 g sample of a radioisotope has a half-life of 3 days. How much remains after 12 days?
What is 5 g?
The type of heat transfer when the sun warming the earth
What is radiation?
A current of 2 A flows through a 12 Ω resistor. What is the voltage?
What is 24 V?
In Newton's First Law of Motion, Newton states that a body at rest...what?
This law states that the electric current flowing through a conductor between two points is directly proportional to the voltage across those points, as long as the temperature and other physical conditions remain constant
What is Ohm's Law
A 200 g sample has a half-life of 5 years. How much remains after 20 years?
What is 12.5 g?
Heating water by boiling water is which form of heat transfer?
What is convection?
A 9 V battery is connected to a 3 Ω resistor. What current flows?
What is 3 A?
What is the Force Equation?
What is Force = Mass x Acceleration?
F=ma
the process by which heat is transferred through a substance by direct physical contact between its atoms or molecules
What is conduction
A sample starts at 64 g. After 3 half-lives, how much remains?
What is 8 g?
Heating a metal spoon in a hot bowl of soup is an example of which kind of heat transfer?
What is conduction?
A lamp draws 0.5 A from a 120 V source. What is its resistance?
What is 240 Ohms?
In Newton's Third Law of Motion, Newton states that for every action there is...
What is "an equal and opposite reaction?"
the transfer of heat through the physical movement of a fluid with hot fluids rising and cold fluids falling
What is convection
A radioisotope has a half-life of 6 days. Starting with 48 g, how much is left after 24 days?
What is 4 g?
Heating a room with an HVAC is an example of which kind of heat transfer?
What is convection?
What voltage is needed to push 4 A through a 15 Ω resistor?
What is 60 V?
How much force is applied to a 100 kg football player hitting a blocking dummy at 5 m/s2?
What is 500 N of force?
The transfer of heat through electromagnetic waves
What is radiation
After 4 half-lives, 3 g of a sample remains. What was the original mass?
What is 48 g?
Feeling the heat of a fire while sitting across the room from the fireplace is which kind of heat transfer?
What is radiation?
If resistance doubles and voltage stays the same, what happens to current?
What is it is cut in half?
If a 1,000 kg car hits wall with 20,000 N of force, how much was it accelerating when it hit the wall?
What is 20 m/s2?