TOPIC 1 TOOLKIT

Build numerical fluency.

Change any input and inspect the method, units and result immediately.

Prefix converter

Convert from pico through tera without losing the power of ten.

ValueFromTo

RESULT5.0000e-3

5 × 10^-3 ÷ 10⁰

Connect an absolute uncertainty to the size of the measured value.

MeasurementAbsolute uncertainty

PERCENTAGE UNCERTAINTY0.81%

(absolute uncertainty ÷ measured value) × 100%

For Q = xᵃyᵇ, multiply each percentage uncertainty by its power, then add.

x uncertainty %power ay uncertainty %power b

UNCERTAINTY IN Q7.0%

|a|Δx/x + |b|Δy/y

Resolve a vector measured at angle θ above the positive horizontal.

MagnitudeAngle θ / °

→

HORIZONTAL16.38

V cos θ

VERTICAL11.47

V sin θ