Subject Answers

A: Before I dive into the relationship between resistance and voltage in a filament lamp, it is important to first understand what type of a conductor a filamen...

In order to understand what 1 volt is, we have to first see what is a “volt” used for!The volt - or V - is the SI unit for potential difference, which is define...

A: In order to understand the validity of the Big Bang Theory, we would like to first understand what the red shift is. The red shift is a phenomenon wherein wa...

To understand this, we have to take it step by step. Firstly, if the speed is doubling, then that means kinetic energy increases by a factor of 4, since:K.E = 1...

A: Here we will use the specific heat capacity - i.e. the amount of heat energy needed to raise or lower the temperature of a substance of mass 1 kg by 1 deg C...

A: a) Voltage in essence is a measure of the amount of work done per unit charge as it moves through a circuit. Now, voltage can be differentiated into two type...

There are two types of waves: transverse and longitudinal. Light is a transverse wave, therefore its oscillations are perpendicular to the direction of motion....

This is a classic forces question, which is seen in different variations throughout the past papers. To calculate the answer we will need to re-arrange the forc...

This is an ideal gas question, so the equation PV=NKT will be used. Here P tells us Pressure, V=volume, N=number of particles, K= Boltzmann's constant and T=Tem...

Remember, that in all collisions momentum is conserved; that is, the momentum before the collision will always be equal to the momentum after the collision in a...