Heat
The amount of energy required to raise 1Kg of a substance by 1K.
What is Specific Heat Capacity?
Type of radiation that has the best penetration.
What is Gamma Radiation?
A Truck moves with a constant Velocity are the forces acting on it balanced? Justify your response.
What is Yes? No acceleration therefore net force=0, forces are balanced.
What Force is Holding the Atom Together?
What is Strong Nuclear Force
What type of waves need a medium to travel through?
Mechanical Waves
The amount of energy required to change the state of 1Kg of a substance.
What is Latent Heat?
This radiation releases a helium nucleus.
What is Alpha Radiation?
Mr Smith paddles across a channel he moves 20m North and at the same time 5m East. Find his displacement.
20.62m at 14 degrees North, Northeast
A linear Trend Between Voltage and Current Indicates what sort of a resistor?
What is an Ohmic Resistor?
What happens when waves hit a boundary?
Explain why the temperature of a substance does not change when changing state.
Energy is used to break the bonds and change the state/phase of the substance.
Look at the graph Mr Smith will show.
Determine the half life.
What is 20 Hours?
A construction Worker drops a brick from a building and it falls 50m. Calculate the Time it takes for the brick to reach the ground
3.2seconds
Resistance in a wire can be reduced by.
Increasing Length, Increasing cross sectional Area and Decreasing Temperature.
Two waves of interacting leaving an area of no disturbance.
What is destructive Interference?
Determine the heat energy when 250ml of water is raised from 20C to 90C.
What is 73500J?
Half Life Equation
N=N0(1/2)n
A 20kg Sled travelling at 9m/s collides with a stationary sled of 40kg. The sled then moves away at 6m/s. Find the Velocity of the 20Kg sled after the collision.
Daily Double!!!!
3m/s
Find the Resistance when 12 Volts and 4 Amps.
3 Ohms
What is 5 Hz?
The final temperature of a mixture of 20ml of cold milk (SHC=4200) at an initial temperature of 4C, mixed into 230ml of hot coffee (SHC=4200) at 80C. Round to nearest Whole number.
What is 74C?
Look at the Graph.
Predict the time it would take for 85% of nuclei to decay.
What is 60 Hours?
A 2.4Kg object at rest has 10N applied over 5 Seconds. Find the final Velocity of the object.
20.8m/s
If a 1000Watt Micro Wave is 85% Efficient. Find how much energy is supplied over 2.5 Mins.
127500J
What is the formula to find refractive index?
ni sin I = nr Sin r