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PHS1001 - Foundation physics - S1 2025
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What is the current through R1 in the circuit below?
What is the code for today's quiz?
Consider the circuit shown below:
How do the voltage drops across resistors one and two and three compare?
Consider the circuit below:
Which statement correctly describes this circuit?
Which of the following describes the type of graph you'd expect when plotting voltage across an electrical component vs current through the component, if it followed Ohm's Law?
The quantities EMF and potential difference have the same units, Volts. Which of the following correctly explains the difference between these two quantities.
Which of the following is Ohm's Law?
Two hockey pucks (150g each) are travelling across the ice in a straight line. Puck 1 is travelling faster than Puck 2 and catches up with, and collides with, Puck 2. The initial velocity of Puck 1 was 3 ms-1 and the initial velocity of Puck 2 was 2 ms-1, both to the right. Following the collision the velocity of Puck 1 is 2 ms-1 to the right. Puck 2 experiences an impulse of 0.15 kg m/s right from puck 1.
What is the speed of Puck 2 after the collision?
Two hockey pucks (150g each) are travelling across the ice in a straight line. Puck 1 is travelling faster than Puck 2 and catches up with, and collides with, Puck 2. The initial velocity of Puck 1 was 3 ms-1 and the initial velocity of Puck 2 was 2 ms-1, both to the right. Following the collision the velocity of Puck 1 is 2 ms-1 to the right.
What is the impulse of Puck 1 on Puck 2?
At a crash test facility scientists run a car of mass m into a wall at a velocity v. The car comes to rest following the collision. The experiment is repeated several times at the same velocity for several different cars (all of mass m). Given that the mass of the cars and the velocity of the cars are all the same, the only way to alter the average force exerted on the passenger is to change the duration of the collisions.
Which of the following features of cars/roads act to increase the collision time directly (i.e. while a collision is occurring)?