CSEC Physics - Redo 01, 02, 03, 04

Which of the following are fundamental quantities?

• Area

• Luminous Intensity

• Time

• Speed

What is the UNIT for acceleration?

• ms−²

• Nm

• ms−¹

• Nm−¹

What is the unit for weight?

• kilogram

• Newton

• torque

• kilograms per second

Answer explanation

weight is a measure of the size of the pull of gravity on the object

ms^-1 is the unit for ...

• force

• velocity

• momentum 

• acceleration

There may be one or more answers: - Joule is the unit for...

• Work

• Kinetic Energy

• Elastic Potential Energy

• Gravitational Potential Energy

What is the unit for work, w?

• meters per second

• Joule

• Torque

• Newton

What is the unit for momentum, ρ?

• Moments

• kg ms−¹

• kg ms−²

• inertia

Determine the significant figure(s) of: 100010

• 6

• 5

• 4

• 3

Answer explanation

Zeroes between nonzero digits are significant:

1002 kg has 4 significant figures,

3.07 mL has 3 significant figures.

For the following, determine the fundamental quantity.

• Volume

• Area

• Length

• Depth

Which law states:

For a fixed mass of gas at constant volume, the pressure is directly proportional to its absolute temperature.

• Pressure Law

• In 1787, Jacques Charles

• In 1678, Robert Hooke

• In 1662, Robert Boyle