What is the equivalent of $80 \mathrm{years}$ in $\mathrm{seconds}$?

Important Questions on Measurement and Uncertainties

EASY

Diploma

IMPORTANT

Physics for the IB Diploma 6th Edition>Chapter 1 - Measurement and Uncertainties>Exam-style questions>Q 2

A book has $500$ pages (printed on both sides). The width of the book excluding the covers is $2.5 \mathrm{cm}$. What is the approximate width in $\mathrm{mm}$ of one sheet of paper?

EASY

Diploma

IMPORTANT

Physics for the IB Diploma 6th Edition>Chapter 1 - Measurement and Uncertainties>Exam-style questions>Q 3

The speed of sound is approximately $330 \mathrm{m} {\mathrm{s}}^{-1}$. A storm is $3 \mathrm{km}$ away. Approximately how much later after seeing lightning will thunder be heard?

EASY

Diploma

IMPORTANT

Physics for the IB Diploma 6th Edition>Chapter 1 - Measurement and Uncertainties>Exam-style questions>Q 4

In which of the following diagrams do the three forces add up to zero?

EASY

Diploma

IMPORTANT

Physics for the IB Diploma 6th Edition>Chapter 1 - Measurement and Uncertainties>Exam-style questions>Q 5

Three forces act on a body as shown.

MEDIUM

Diploma

IMPORTANT

Physics for the IB Diploma 6th Edition>Chapter 1 - Measurement and Uncertainties>Exam-style questions>Q 6

A force of $25 \mathrm{N}$ acts normally on a surface of area $5.0 {\mathrm{cm}}^2$. What is the pressure on the surface in $\mathrm{N} {\mathrm{m}}^{-2}$.

EASY

Diploma

IMPORTANT

Physics for the IB Diploma 6th Edition>Chapter 1 - Measurement and Uncertainties>Exam-style questions>Q 7

The side of a cube is measured with an uncertainty of $2\%$. What is the uncertainty in the volume of the cube?

EASY

Diploma

IMPORTANT

Physics for the IB Diploma 6th Edition>Chapter 1 - Measurement and Uncertainties>Exam-style questions>Q 8

The flow rate $Q$ through a tube length $L$ and radius $r$ whose ends are kept at a pressure difference $∆P$ is given by $Q=\frac{c{r}^4∆P}{L}$, where $c$ is constant. The percentage uncertainty of which quantity has the largest effect on the percentage uncertainty in $Q$?

EASY

Diploma

IMPORTANT

Physics for the IB Diploma 6th Edition>Chapter 1 - Measurement and Uncertainties>Exam-style questions>Q 9

The force of air resistance $F$ on a car depends on speed $v$ through the formula $F=a{v}^2+bv$, where $a$ and $b$ are constants. Which of the following graphs will result in a straight-line graph?