Part A) Convection occurs in liquids. In this process, more energetic particles move from warmer regions to cooler ones and take their energy with them.

A convection current happens because …

In the LHC protons are accelerated to almost the speed of light. They are contained in the circular accelerator by the 1232 superconducting dipole magnets. How strong does the magentic …

An infinite square well is a region with constant potential energy (inside the well) surrounded by a region of infinite potential energy (outside the well). Therefore, it is impossible for …

The horizontal position x (measured from the optical axis) of a point on the screen at distance D from the double slit with slit separation a is related to the …

Temperature is the macroscopic effect of the average kinetic energy of the subatomic particles that compose a material. Kelvins are therefore used because they are the only true scale that …

When most students start their physics courses the first form of energy they learn about is kinetic energy which is related to the velocity that an object has. Conversely, potential …

Just equate the centripetal force and gravitational force acting on the ISS and find v.

P. S. Google the radius and mass of the Earth, the distance to the ISS …

The electromotive force or emf of a cell in a circuit is, for a start, not a force at all: it has the unit of volts. A good definition is …

This question refers to the behavior of gases under compression. In IB we model such situations using the ideal gas equation, which states that:

pV = nRT,

where:

p - …

In Physics, there are two types of numbers: scalars and vectors. Scalars are just a normal number, as we are used to. Vectors also have a direction associated with them. …

A typical transformer consists of an iron core with two coils wound around it - the primary and the secondary. Any current-carrying wire produces a magnetic field around it, but …

This is a common IB question- fairly tricky the first time you com across it!

The electron in a box model uses the idea that the energy of the electron and that of a standing wave in a box are analogous. So using your knowledge …

In order to answer this question it is important to remember that an atom has energy in two forms: kinetic (energy that allows the atom to move) and potential (energy …

When I initially met this problem, I was slightly confused because of the car analogy above. So the way to think about this is that your body and the car …

If asked to give the units of some complicated quantity in more basic units, try to think of a physical equation you know that relates the complicated quantity (i.e. energy, …

Answer: 25. Explanation: In the binary system, each digit can be one of two values: 0 and 1. That's two possibilities ('bi' is Latin for 'twice'). In the decimal system, …

always draw free-body diagram. This will clarify the forces that are acting on the object

Determine whether newton's 1st law or 2nd law that are in play, and use the …

When working out unit equivalences the most straightforward approach is to use formulas (often in the data booklet) to help reach a correct answer. We start by looking at Joules; …

Separate vertical and horizontal velocity vectors, calculate vertical acceleration (due to gravity), calculate time before object hits the ground, use time to calculate horizontal distance. Use 'the big three' equations.