Physical Quantities & Measurement Techniques Assessment

7 questions · 14 parts · 15.999999999 marks

0/15.999999999 marks

0Correct0Partial0Wrong14Unattempted

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Questions

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1aEasy1 mark

Which quantity is a vector?

1bMedium1 mark

A pendulum takes 18.6 s for 15 oscillations. Its period is ____ s.

Answer

2aHard3 marks

Create a clear annotated answer on the canvas. Use a diagram, graph, flowchart, equation layout and/or concise labels to show your reasoning.

Two perpendicular forces are 6 N east and 8 N north. Calculate the resultant magnitude and describe its direction.

Draw with the mouse or a finger.

3aEasy1 mark

What is a scalar?

3bEasy1 mark

What is a vector?

3cEasy1 mark

Why measure several oscillations rather than one?

4aEasy1 mark

How is volume of a liquid measured?

4bEasy1 mark

How are perpendicular vectors combined?

5aMedium1 mark

Use the lesson knowledge to answer precisely: What is a scalar?

5bMedium1 mark

Use the lesson knowledge to answer precisely: What is a vector?

6aMedium0.999999999 marks

A student investigates how the length of a pendulum affects its period, keeping the mass of the bob and the angle of swing the same each time. Sort each quantity by its role in the investigation.

Independent variable

Dependent variable

Control variable

6bEasy1 mark

What makes an investigation a fair test?

7aMedium1 mark

A student repeats her own experiment with the same equipment and gets the same result each time. A different student, using different apparatus, also gets the same result. What do these two facts show in turn?

7bMedium1 mark

A student times a pendulum but forgets to keep the release angle the same each time. Her repeated readings agree closely with each other. Is her conclusion valid?