What is the half-life of a substance?

time for half the number of nuclei to decay

What does 'Fnet = ma' represent?

Force equals mass times acceleration

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Overall 5105 Formula Sheet Revision

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Put your physics knowledge to the test with questions ranging from laws of motion to energy and waves. Are you ready to show off your understanding of the physical world?

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Questions 17

Answers

1
What is the formula for gravitational potential energy?
Ep = Fd
Ep = mgh
Ep = mv^2
Ep = 1/2 mv^2
2
What is the main component of an atom's nucleus?
Electrons and protons
Protons and neutrons
Neutrons only
Electrons only
3
True or false: Alpha particles are the least ionising.
False
True
4
What is the formula for work done?
W = Pd
W = mv
W = Fd
W = mgh
5
What is the unit of mass?
kg
A
m
s
6
What is the half-life of a substance?
time for half the number of nuclei to decay
half the energy in atom's initial internal store
half the mass of the initial mass of atoms
time for all of the nuclei to decay
7
What does 'Fnet = ma' represent?
Frequency equals mass times acceleration
Force equals mass times acceleration
Force equals radius times area
Friction equals mass times area
8
What is the formula for kinetic energy?
Ek = Fd
Ek = 1/2 mv^2
Ek = mv
Ek = mgh
9
What is the effect of increasing the length of a pendulum?
Period stays the same
None of the above
Period decreases
Period increases
10
What does 'density' measure?
Volume per mass
Mass per volume
Force per area
Weight per area
11
Which law states that an object at rest stays at rest?
Law of Gravity
Newton's 2nd Law
Newton's 3rd Law
Newton's 1st Law
12
What is the relationship between current and voltage?
V = IR
I = VR
R = IV
P = VI
13
What is the best conductor of heat?
Liquid
Gas
Solid
Vacuum
14
What is the unit of power?
Watts
Joules
Volts
Amperes
15
Which type of wave has particles vibrating perpendicular to wave motion?
Sound waves
Transverse waves
Longitudinal waves
Electromagnetic waves
16
True or false: Energy can be created or destroyed.
False
True
17
What happens to hot gas when heated?
Expands and rises
Contracts and sinks
Cools down
Stays the same

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