Using an instrument having a greater precision
Checking the calibration of the instrument used
Checking for zero error on the instrument used
J m s-1
5×100 kg m s–1
5×101 kg m s–1
5×102 kg m s–1
5×103 kg m s–1
`g=(4pi^2l)/t^2`. The uncertainty in the value of l is 2% and the uncertainty in the value of t is 5%. What is the uncertainty in g?
F = `6pietarv`
where η is a constant. What are the SI units of η?
25.0 ± 0.2 cm2
25.0 ± 0.4 cm2
25 ± 2 cm2
25 ± 4 cm2
T against v
T2 against v
T against v2
T2 against v2
`d=1/2at^2.` The uncertainty in a is negligible.
What is the absolute uncertainty in d?
± 0.2 m
± 1 m
± 2 m
± 4 m
momentum, electric field strength, displacement
momentum, displacement, pressure
pressure, electric current, displacement
electric current, electric field strength, impulse
kg m2 s
kg m2 s-1
kg m2 s-2
kg m2 s-3
amax of an oscillator undergoing simple harmonic motion (SHM) has a percentage uncertainty of 12%. The amplitude x0 of the oscillation has a percentage uncertainty of 20%. `ifk=sqrt(a_(max)/(x0)` what is the percentage uncertainty in the constant k?
J kg−1 m3
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?
s–1 for 20s and then east at a constant speed of 4m s–1 for 20s. What is the average speed of the car during this motion?
Which of the following gives the resultant force on the block?
W sin θ
W cos θ
N sin θ
N cos θ
impulse, kinetic energy
temperature, kinetic energy
kg m–1 s–1
kg m2 s–2
kg m s–2
kg m2 s–1
F=kv2 where k is a constant. What is the unit of k?
These experimental results suggest that the
measurements show a significant systematic error but small random error.
measurements show a significant random error but small systematic error.
measurements are precise but not accurate.
weight of an object is proportional to its mass.
Which of the following is the magnitude of the component of the weight parallel to the plane?
52 mm3. This volume in m3 is
What is a possible pulse shape when the pulses overlap?
kg m2 C–1 s
kg m2 s–1 A
9 .81 ms−2. The displacement is calculated. Which of the following gives the correct number of significant digits for the calculated value of the displacement of the object?
s−1 can be resolved along perpendicular directions XY and XZ.
The component of the velocity in the direction XY is of magnitude 4 m s−1. What is the magnitude of the component in the direction XZ?
4 m s−1
3 m s−1
2 m s−1
1 m s−1
What is the main purpose of the mirror?
To provide extra light when reading the scale
To reduce the risk of parallax error when reading the scale
To enable the pointer to be seen from different angles
To magnify the image of the pointer
Which of the following is the correct relationship between p and q?
p = sq+r
p = rq+s
p = rq−s
p = rs+q
I2 will be
Another 5 N force is applied to O in the plane of the page. Which of the following gives the direction of this force to ensure that O is in equilibrium?
The pattern suggests the presence of
random and systematic uncertainties.
random uncertainties but no systematic uncertainties.
systematic uncertainties but no random uncertainties.
neither random nor systematic uncertainties.
Using the information on the graph, what can be said about the measurements used to find the density of oil?
The length of the cube and the diameter of the sphere are 10.0±0.2cm.
What is the ratio