INTO Manchester
NCUK International Foundation Programme
Physics
End of Semester 1 Examination January 2016
IM Number ……………………
Question
Max
A1
8
A2
7
A3
7
A4
3
A5
7
A6
6
A7
5
A8
10
A9
7
B1
20
B2
20
B3
20
Marks
Checked
Marks
Agreed
Marks
Time allowed is 2 hours plus 5 minutes reading time.
Section A: Answer all questions. This section carries 60 exam marks
Section B: Answer two questions. This carries 40 exam marks.
Answer all questions in blue or black ink in the spaces provided.
No answers are to be written in the first 5 minutes.
The number of marks for each question is shown in brackets.
Note that there are different marks for each question. Do the questions in any
order.
You may use a calculator in the examination.
Write numerical answers to the correct number of significant figures (three)
and use the correct units.
You will gain maximum marks for answers that are written clearly and show
clearly the reasoning that you have used to obtain the answer.
The total number of marks for the paper is 100.
It is essential that your written English is clear, accurate and expressed in as
few words as possible.
No written material is permitted in the examination room.
No mobile phones are permitted in the examination room.
1 IFY Physics January 2016 | INTO Manchester
Total
100
Section A
Answer all questions from Section A
A1
An ideal gas is contained in a spherical container of diameter 15 cm. Its
temperature is 15 oC and it exerts a pressure of 2.85 atm on the walls of the
container.
a) Calculate the volume of the container in m3.
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[2]
b) Calculate the number of moles of gas in the container.
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[3]
c) The gas is heated to 65 oC. What will be the new pressure inside the
container?
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[3]
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A2 The battery in the circuit below has negligible internal resistance.
A4
A1
A2
A3
Calculate the readings on the ammeters:
i)
A1 _________________________________________________________
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ii)
A2 _________________________________________________________
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iii)
A3 _________________________________________________________
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iv)
A4 _________________________________________________________
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[7]
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A3 A spring has a mass of 2.2 kg attached to it and it extends by 4.0 cm.
a) Calculate the spring constant.
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[3]
b) An identical spring is attached in parallel with the first spring.
i)
What will be the new spring constant of the spring combination?
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ii)
What will be extension of the spring combination in cm, if a mass of
5.7 kg is attached to it?
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[3]
A4 Use dimensional analysis to show that the unit of pressure, the pascal, is
equivalent to kg s-2 m-1.
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A5 Below is a capacitor combination.
a) Calculate the total capacitance of the combination.
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[3]
b) How much charge would be stored on the capacitor combination if a pd of
12 V were applied to it?
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[2]
c) How much energy would be stored by the capacitors?
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A6 a) A coin is dropped from the top of a building of height 17.8 m. Calculate the time
for the coin to hit the ground.
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b) In reality it will take a slightly longer time to hit the ground. Explain why.
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[2]
A7 A wire has a diameter of 0.46 mm.
a) Calculate its cross-sectional area in m2.
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[2]
b) The wire is 2.8 m long and is made of a material with a resistivity of
4.9x10-7 m. Calculate the resistance of the wire.
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[3]
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A8 A kettle is rated at 230 V, 2400 W.
a) What is the resistance of the kettles element?
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[3]
b) The fuse in the plug for the kettle can be either: 3 A, 5 A, 10 A or 13 A.
Choose the appropriate fuse for the plug.
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[2]
c) If the kettle is 85% efficient how much power reaches the water inside the
kettle?
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[1]
d) How long will it take the kettle to bring 1.4 litres of water from 18 oC to boiling
point?
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A9 Below is a velocity/time graph.
10
8
6
4
2
0
0
5
10
15
20
25
30
Time / s
a) Calculate the acceleration for the first 5 seconds.
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[2]
b) Calculate the total distance covered.
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THIS PAGE IS INTENTIONALLY BLANK
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Section B
Answer two questions from Section B
B1
a) A person stands at the edge of the roof of a building that is 15 m high. They
throw a ball at a velocity of 12 m s-1 at an angle 350 above the horizontal.
i) What will be the balls maximum height above the ground?
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ii)
How long will it take for the ball to hit the ground after being thrown?
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iii)
How far from the building will the ball hit the ground?
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10 IFY Physics January 2016 | INTO Manchester
b) A steel wire is 3.16 m long and is attached to a fixed support. A load of
4.65 kg is suspended from the other end and causes the wire to stretch by
0.362 mm.
The Young’s modulus for steel is 2.11 x 1011 N m-2.
Determine the diameter of the wire.
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B2
a) An ice cube of mass 15 g is taken from a freezer at -19 0C. It is placed into
a beaker containing 100 g of water at 25 0C. Assume there is no transfer of
heat between the beaker and the water/ice mixture.
What will be the final temperature of the beaker of water?
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b) A 22 F capacitor is charged to 12 V. It is discharged through a 300 k
resistor. How long will it take for the voltage to fall to 5.8 V?
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12 IFY Physics January 2016 | INTO Manchester
c) The circuit below is a potential divider containing a resistor and thermistor.
The graph shows the electrical/thermal characteristics of the thermistor.
Calculate the output voltage, VOUT, when the temperature is:
i)
30 0C
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ii)
90 0C
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[5]
d) A bulb is rated at 230 V, 40 W. How many electrons will flow through it in 1
minute?
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13 IFY Physics January 2016 | INTO Manchester
[4]
B3 A student conducts an experiment on a cell to investigate its internal resistance.
They use the circuit below.
You will find this equation useful:
V = -r I 
The results of the experiment are in the table below.
Current / A
0
0.5
1.0
1.5
2.0
2.5
3.0
Voltage / V
1.45
1.44
1.36
1.30
1.26
1.23
1.12
Repeat voltage / V
1.49
1.44
1.38
1.32
1.24
1.19
1.14
Average voltage / V
1.47
1.44
1.37
a) Complete the table by calculating the average voltage for the last 4 sets of
data.
[3]
b) Draw a graph of average voltage (y-axis) against current (x-axis) using the
graph paper opposite. Include a line-of-best-fit.
[7]
14 IFY Physics January 2016 | INTO Manchester
15 IFY Physics January 2016 | INTO Manchester
c) Find the gradient of the graph. Do not use values from the table, you
must use the graph.
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d) What is the internal resistance of the cell?
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e) Use the graph to find the emf of the cell.
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f) Two flasks, A and B, are joined by a thin tube with a valve, X, as in the
diagram. The valve is initially closed.
A
x
B
Flask A has a volume of 150 cm3 and contains 0.5 moles of a gas at 30 0C.
Flask B has a volume of 45 cm3 and contains 0.2 moles of the same gas at 30 0C.
i)
Calculate the pressure in each flask.
Flask A _____________________________________________________________
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Flask B _____________________________________________________________
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ii)
The valve is opened and the gases mix. Calculate the pressure in the
flasks. Assume the temperature stays at 30 0C.
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[4]
16 IFY Physics January 2016 | INTO Manchester