Showing 11 results
Cell Membrane Transport
Simulate four types of membrane transport: simple diffusion, facilitated diffusion, active transport (ATP-powered), and osmosis. Adjust inside/outside concentrations and watch particles move across an animated phospholipid bilayer. ATP pump and channel proteins are rendered for each mode.
Friction on Inclined Plane
Drag the incline angle and watch force arrows update live: normal force, gravity components, and friction. Computes the critical angle where the block begins to slide. When the angle exceeds μₛ, the block slides with kinetic friction. Shows mg sin θ, N, and static vs kinetic friction with real-time labels.
Impulse & Momentum
Apply a force pulse to a block and verify J = FΔt = Δp. Adjust force magnitude, duration, mass, and initial velocity. The F-t graph builds in real time with the shaded area labeled as impulse. Compares impulse to change in momentum to confirm the theorem.
Spring Potential Energy
Release a spring-mass system and watch elastic PE and KE trade off perfectly. Adjust spring constant k, mass, initial displacement, and damping. Live energy bars and dual KE/PE time plots confirm Us + KE = constant. Includes the SHM period formula T = 2π√(m/k).
Work-Energy Theorem
Push a block across a surface and verify W_net = ΔKE. Adjust force magnitude, angle (−60° to +60°), mass, friction, and distance. Live KE-vs-displacement graph and a work breakdown bar chart show W_applied, W_friction, and W_net. Confirms the theorem at every step.
Binomial Distribution
Explore B(n, p) via PMF bars, CDF, or live simulation. Adjust n (1–60), p (0.01–0.99), and highlight any k to see P(X = k), P(X ≤ k), and other tail probabilities. Normal approximation curve overlaid for large n. Simulation mode runs up to 2000 trials and compares empirical vs theoretical.
Least-Squares Regression Line
Generate data with a controlled true slope β and noise σ. The LSRL is computed live with slope b, intercept a, r, r², and SE(b). Toggle residuals on the scatter plot, then switch to the residual plot tab to check model fit. Add an influential outlier to see how it shifts the regression line.
Gas Laws
Interactive gas law explorer with five tabs: Boyle's Law (PV = const), Charles's Law (V∝T), Gay-Lussac's Law (P∝T), Ideal Gas Law (PV=nRT), and Dalton's Law (partial pressures pie chart). Each tab shows an animated particle container, a live graph (hyperbola/linear/PV), and computed result values.
Intermolecular Forces
Explore London dispersion, dipole-dipole, and hydrogen bonding through animated particle simulations. Flickering electron clouds show temporary dipoles for London forces; polar arrows show permanent dipoles; dashed H-bond lines connect water molecules. A boiling point bar chart at the bottom compares H₂O, HF, NH₃, H₂S, HCl, and CH₄ to illustrate IMF effects on BP.
Electron Configuration
Click any element (Z=1–36) to see its animated Bohr-model atom with color-coded s/p/d shells, orbital-box diagram applying Aufbau, Pauli exclusion, and Hund's rules, and full spdf notation. Stat card shows valence electrons, period, group, and configuration. Includes special cases Cr (Z=24) and Cu (Z=29).
Mendelian Genetics
Interactive Punnett square builder with four cross types: monohybrid (3:1), dihybrid (9:3:3:1), testcross (1:1), and incomplete dominance. Select parent genotypes via dropdowns to regenerate the square and ratio donut chart instantly. Simulate 100 offspring to compare empirical vs expected ratios. Color-coded cells distinguish dominant, heterozygous, and recessive genotypes.