WorksheetsA-LEVEL PHYSICS
Total questions: 25
Worksheet time: 16mins
Denisty it measured in what units?
kgm3
kg2m
kgm−3
inchyards
Which of the following are vector quantities? I. Work II. Displacement III. Acceleration IV. Electric field V. Magnetic induction
I, II and III only
II, III and IV only
III, IV and V
II, III, IV and only
____________is a million times smaller than the thickest human hair
Atom
Cell
Sand
Compound
When a quantity is raised to a power, you...
multiply the percentage uncertainty by that power
divide the percentage uncertainty by that power
add the percentage uncertainty to that power
multiply the absolute uncertainty by that power
When you multiply or divide two quantities, you...
add the percentage uncertainties
subtract the percentage uncertainties
add the absolute uncertainties
When you add or subtract two quantities, you...
add or subtract the uncertainty
add or subtract the percentage uncertainty
multiply the two percentage uncertainty
Any measurement will have some ____________. This will come from variation in the data obtained and be subject to systematic or random effects. This can be estimated by considering the instruments and the method and will usually be expressed as a range such as 20 ± 2 °C.
Error
Precision
Reproducibility
Uncertainty
A quality denoting the closeness of agreement (consistency) between values obtained by repeated measurement. It is influenced by random effects and can be expressed numerically.
Repeatability
Precision
Uncertainty
Resolution
A measurement result is considered ________ if it is judged to be close to the true value. It is influenced by random and systematic errors.
Precise
Accurate
An error
Resolution
The ∑0 baryon, composed of the quark combination uds, is produced through the strong interaction between a π+ meson and a neutron.
π+ + n → ∑0 + X
What is the quark composition of X?
u s̅
u d
u d̅
u d s̅
Which answer does not give the correct force and exchange-particle combination?
gravitational attraction: W boson
electrostatic repulsion of electrons: virtual photon
strong interaction: pion
β− decay: W boson
Which answer shows the correct interactions experienced by a hadron or a lepton?
Hadron: Strong = Yes. Weak = Yes
Lepton: Strong = Yes. Weak = Yes
Hadron: Strong = Yes. Weak = No
Lepton: Strong = Yes. Weak = No
Which of the following statements about muons is incorrect?
A muon is a lepton.
A muon has a greater mass than an electron.
A muon is made up of a quark and an anti-quark
A muon decays via the weak interaction
Which particle is correctly described?
neutron: baryon, ūd
neutron: meson, udd
proton: baryon, uud
positive pion: meson, ūd
Which statement concerning the forces between particles is incorrect?
Leptons experience the weak interaction.
Leptons experience the strong interaction.
Hadrons experience the weak interaction.
Hadrons experience the strong interaction.
What of the following is a hadron of zero charge?
neutrino
photon
proton
neutron
What is the quark structure for an anti-proton?
Which of the following is not made of quarks?
kaon
muon
neutron
pion
If there are 146 neutrons in 238U, how many neutrons
are found in the nucleus of 235U?
141
143
145
147
What is the number of neutrons in Cesium?
55 neutrons
76 neutrons
84 neutrons
106 neutrons
139 neutrons
What kind of force holds the nucleus together?
Strong Nuclear Force
Weak Nuclear Force
Gravitational Force
Electromagnetic Force
Neutrons ......
has positive electric charge with equal magnitude to that of an electron.
has no net electric charge.
has negative electric charge.
orbiting the nucleus.
