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Unit 1 - Measurement

Authored by Neil Lithgo

Physics

12th Grade

Used 23+ times

Unit 1 - Measurement
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15 questions

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1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

A student models the relationship between the pressure p of a gas and its temperature T as p = x + yT.

The units of p are pascal and the units of T are kelvin. What are the fundamental SI units of x and y?

A

B

C

D

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is the unit of electrical potential difference expressed in fundamental SI units?

kg m s-1 C-1

kg m2 s-2 C-1

kg m2 s-3 A-1

kg m2 s-1 A

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is the best estimate for the diameter of a helium nucleus?

10–21 m

10–18 m

10–15 m

10–10 m

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Which is a unit of force?

J m

J m–1

J m s–1

J m–1 s

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

How many significant figures are there in the number 0.0450?

2

3

4

5

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is a correct value for the charge on an electron?

1.60 x 10–12 μC

1.60 x 10–15 mC

1.60 x 10–22 kC

1.60 x 10–24 MC

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

A swimming pool contains 18×106 kg of pure water. The molar mass of water is 18gmol–1. What is the correct estimate of the number of water molecules in the swimming pool?

104

1024

1025

1033

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