2015 J2 H2 June Revision Package 2
2015 JC2 H2 Physics June Revision Package
Measurement Techniques
J02/P2/Q1
1.
Make reasonable estimates of the following quantities.
(a) mass of an apple
[1]
(b) number of joules of energy in 1 kilowatt-hour
[1]
(c) wavelength of red light in a vacuum
[1]
(d) pressure due to a depth of 10 m of water
[1]
J02/P2/Q2
2.
A student uses a micrometer screw gauge to measure the diameter of a wire. He fails to notice that, with the gauge fully closed, the reading is not zero.
(a)
State and explain whether the omission introduces a random error or a systematic error into the readings of the diameter.
[2]
(b)
Explain why the readings are precise but not accurate.
N02/P2/Q1
3.
(a)
(i) Define density.
[1]
(ii) State the base units in which density is measured.
(b)
[2]
[2]
The speed v of sound in a gas is given by the expression
where p is the pressure of the gas of density ρ. is a constant.
Given that p has the base units of kgm1s2, show that the constant has no unit.
[3]
N02/P2/Q2
4.
A student uses a metre rule to measure the length of an elastic band before and after stretching it.The lengths are recorded as length of band before stretching, L0 = 50.0 0.1 cm length of band after stretching, LS = 51.6 0.1 cm
Determine
(a) the change in length (LS L0), quoting your answer with its uncertainty,
1
[1]
2015 JC2 H2 Physics June Revision Package
(b) the fractional change in length,
,
(c) the uncertainty in your answer in (b).
J04/P2/Q1
5.
(a)
State the difference between a scalar quantity and a vector quantity.
(b)
[1]
[3]
[2]
Two forces of magnitude 6.0 N and 8.0 N act at a point P. Both forces act away from point P and the angle between them is 40°. Fig. 1.1 shows two lines at an angle of 40° to one another.
On Fig. 1.1, draw a vector diagram to determine the magnitude of the resultant of the two forces.
[4]
N04/P2/Q1
6.
A student takes readings to measure the mean diameter of a wire using a micrometer screw gauge.
(a)
Make suggestions,
Measurement Techniques
J02/P2/Q1
1.
Make reasonable estimates of the following quantities.
(a) mass of an apple
[1]
(b) number of joules of energy in 1 kilowatt-hour
[1]
(c) wavelength of red light in a vacuum
[1]
(d) pressure due to a depth of 10 m of water
[1]
J02/P2/Q2
2.
A student uses a micrometer screw gauge to measure the diameter of a wire. He fails to notice that, with the gauge fully closed, the reading is not zero.
(a)
State and explain whether the omission introduces a random error or a systematic error into the readings of the diameter.
[2]
(b)
Explain why the readings are precise but not accurate.
N02/P2/Q1
3.
(a)
(i) Define density.
[1]
(ii) State the base units in which density is measured.
(b)
[2]
[2]
The speed v of sound in a gas is given by the expression
where p is the pressure of the gas of density ρ. is a constant.
Given that p has the base units of kgm1s2, show that the constant has no unit.
[3]
N02/P2/Q2
4.
A student uses a metre rule to measure the length of an elastic band before and after stretching it.The lengths are recorded as length of band before stretching, L0 = 50.0 0.1 cm length of band after stretching, LS = 51.6 0.1 cm
Determine
(a) the change in length (LS L0), quoting your answer with its uncertainty,
1
[1]
2015 JC2 H2 Physics June Revision Package
(b) the fractional change in length,
,
(c) the uncertainty in your answer in (b).
J04/P2/Q1
5.
(a)
State the difference between a scalar quantity and a vector quantity.
(b)
[1]
[3]
[2]
Two forces of magnitude 6.0 N and 8.0 N act at a point P. Both forces act away from point P and the angle between them is 40°. Fig. 1.1 shows two lines at an angle of 40° to one another.
On Fig. 1.1, draw a vector diagram to determine the magnitude of the resultant of the two forces.
[4]
N04/P2/Q1
6.
A student takes readings to measure the mean diameter of a wire using a micrometer screw gauge.
(a)
Make suggestions,