Physics for the IB Diploma 6th Edition>Chapter 1 - Measurement and Uncertainties>Test yourself>Q 42

MEDIUM

Diploma

IMPORTANT

Earn 100

In a certain collision, the momentum vector of a particle changes direction but not magnitude. Let $p$ be the momentum vector of a particle suffering an elastic collision and changing direction by $30 °$ . Find, in terms of $p (= | p |)$ , the magnitude of the vector representing the change in the momentum vector:

Important Questions on Measurement and Uncertainties

MEDIUM

Diploma

IMPORTANT

Physics for the IB Diploma 6th Edition>Chapter 1 - Measurement and Uncertainties>Test yourself>Q 45

Vector

A

has a magnitude of

6.00 units

and is directed at

60 °

to the positive x-axis. Vector

B

has a magnitude of

6.00 units

and is directed at

120 °

to the positive x-axis. Find the magnitude and direction of vector

C

such that

A + B + C = 0

. Place the three vectors so that one begins where the previous ends. What do you observe?

EASY

Diploma

IMPORTANT

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

What is the equivalent of

80 years

in

seconds

?

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 cm

. What is the approximate width in

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 m s^{- 1}

. A storm is

3 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.

Question Image

MEDIUM

Diploma

IMPORTANT

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

A force of

25 N

acts normally on a surface of area

5.0 {cm}^{2}

. What is the pressure on the surface in

N 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?