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Physics

How Do You Use the Radioactive Decay Law? (HL)

Learn how to apply the radioactive decay law, calculate undecayed nuclei and elapsed time, link decay constant to half-life, and avoid common IB HL errors.

A.5 Galilean and special relativity (HL only)

What Is an Inertial Reference Frame?

Learn what an inertial reference frame is, how Newton's laws apply within it, and how to distinguish inertial from accelerating frames in IB Physics HL.

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Every question IB students actually ask.

Physics

How Do You Use the Radioactive Decay Law? (HL)

What Is an Inertial Reference Frame?

MYP Subjects

Physics

How Do You Use the Radioactive Decay Law? (HL)

What Is an Inertial Reference Frame?

What Is the Second Law of Thermodynamics?

What's the Difference Between Spontaneous and Neutron-Induced Fission?

How Do You Calculate Entropy Change (ΔS = ΔQ/T)?

How Does the Decay Constant (λ) Relate to Half-Life (T½ = ln2/λ)? (HL)

What's the Difference Between Isovolumetric, Isobaric, Isothermal, and Adiabatic Processes?

How Does a Heat Engine Work and How Do You Calculate Its Efficiency?

How Does the Continuous Spectrum of Beta Decay Provide Evidence for the Neutrino? (HL)

Can Entropy Decrease Locally? How?

How Does Background Radiation Affect Measured Count Rate?

What Is an Adiabatic Process in a Monatomic Ideal Gas?

Why Does the Neutron-to-Proton Ratio Affect Nuclear Stability? (HL)

What Evidence Supports the Existence of the Strong Nuclear Force? (HL)

Why Can No Engine Be 100% Efficient?

What Is EMF and How Is It Different from Voltage?

What Are Neutrinos and Antineutrinos, and Why Were They Proposed?

What Is Half-Life and How Do You Calculate Activity/Count Rate Over Time?

What's the Difference in Penetrating and Ionizing Power of Alpha, Beta, and Gamma Radiation?

What Is the Carnot Cycle and What's the Maximum Possible Efficiency of a Heat Engine?

What's the Difference Between a Chemical Cell and a Solar Cell?

How Do You Write a Radioactive Decay Equation?

What Happens to a Nucleus During Alpha, Beta, and Gamma Decay?

How Do You Calculate the de Broglie Wavelength (λ = h/p)?