SI Units · CAPE Physics Unit 1

35 past-paper questions on SI Units, part of Mechanics, from every CAPE Physics Unit 1 paper on Quelpr.

1. Q11 mark · multiple choice· CAPE Physics Unit 1 · 2007 · Paper 1Which S.I. unit could be used to express the power of a light bulb?
2. Q11 mark · multiple choice· CAPE Physics Unit 1 · 2007 (Specimen) · Paper 1Which of the following pairs of units are SI base units?
3. Q351 mark · multiple choice· CAPE Physics Unit 1 · 2007 (Specimen) · Paper 1What is the SI base unit for specific heat capacity?
4. Q31 mark · multiple choice· CAPE Physics Unit 1 · 2008 (Rest of Region) · Paper 1The base SI units of specific heat capacity are
5. Q41 mark · multiple choice· CAPE Physics Unit 1 · 2008 (Rest of Region) · Paper 1An object of mass, m, is moving with kinetic energy E. Which of the following has the same base units as its momentum?
6. Q11 mark · multiple choice· CAPE Physics Unit 1 · 2008 (T&T) · Paper 1The unit of the universal gravitational constant, G, could be written as
7. Q131 mark · multiple choice· CAPE Physics Unit 1 · 2008 (T&T) · Paper 1If p is the momentum of an object of mass m, then the expression \frac{p^2}{m} has the same unit as
8. Q31 mark · multiple choice· CAPE Physics Unit 1 · 2009 · Paper 1Which of the choices below gives the dimensions of the universal gravitational constant G?
9. Q51 mark · multiple choice· CAPE Physics Unit 1 · 2009 · Paper 1If x = 3\text{ mg} and y = 9\text{ kg} then
10. Q31 mark · multiple choice· CAPE Physics Unit 1 · 2010 · Paper 1Given that the following quantities have the base units shown P: \text{kg m}^{-3} Q: \text{kg m s}^{-2} R: \text{kg}^2 \text{m}^{-3} \text{s}^{-1} What quantity does \frac{PQ}{R} represent?
11. Q31 mark · multiple choice· CAPE Physics Unit 1 · 2011 · Paper 1Item 3 refers to the following quantities with their base units. P: \text{kg m}^{-3} Q: \text{kg m s}^{-2} R: \text{kg}^2\text{ m}^3\text{ s}^{-1} What quantity does \frac{PQ}{R} represent?
12. Q31 mark · multiple choice· CAPE Physics Unit 1 · 2012 · Paper 1Item 3 refers to the following quantities with their base units. P: \text{kg m}^{-3} Q: \text{kg m s}^{-2} R: \text{kg}^2\text{ m}^{-3}\text{ s}^{-1} What quantity does \frac{PQ}{R} represent?
13. Q41 mark · multiple choice· CAPE Physics Unit 1 · 2012 · Paper 1Which of the following is NOT an S.I. base unit?
14. Q71 mark · multiple choice· CAPE Physics Unit 1 · 2012 · Paper 1If p is the momentum of an object of mass, m, then the expression \frac{p^2}{m} has the same unit as
15. Q31 mark · multiple choice· CAPE Physics Unit 1 · 2013 · Paper 1Which of the choices below gives the dimensions of the universal gravitational constant G?
16. Q51 mark · multiple choice· CAPE Physics Unit 1 · 2013 · Paper 1If x = 3\text{ mg} and y = 9\text{ kg} then
17. Q11 mark · multiple choice· CAPE Physics Unit 1 · 2014 · Paper 1Which of the following quantities are dimensionless? I. Relative density II. Force III. Length IV. Refractive index
18. Q31 mark · multiple choice· CAPE Physics Unit 1 · 2014 · Paper 1Item 3 refers to the following quantities and their base units. P: \text{kg m}^{-3} Q: \text{kg m s}^{-2} R: \text{kg}^2\text{ m}^{-3}\text{ s}^{-1} What quantity does \frac{PQ}{R} represent?
19. Q51 mark · multiple choice· CAPE Physics Unit 1 · 2014 · Paper 1If x = 3\text{ mg} and y = 9\text{ kg} then
20. Q71 mark · multiple choice· CAPE Physics Unit 1 · 2014 · Paper 1If p is the momentum of an object of mass, m, then the expression \frac{p^2}{m} has the same unit as
21. Q71 mark · multiple choice· CAPE Physics Unit 1 · 2015 · Paper 1The frequency of a transverse wave travelling along a stretched string of length, l, with tension, T, is given by f = \frac{1}{2l}\sqrt{\frac{T}{\mu}} Which of the following units of \mu will make the…
22. Q11 mark · multiple choice· CAPE Physics Unit 1 · 2016 · Paper 1Which of the following sets of measures consists of ONLY dimensionless quantities?
23. Q151 mark · multiple choice· CAPE Physics Unit 1 · 2017 · Paper 1Which of the following quantities is dimensionless?
24. 1(d)(i)3 marks· CAPE Physics Unit 1 · May/June 2022 · Paper 2Determine the units of k.
25. 1(a)(ii)4 marks· CAPE Physics Unit 1 · May/June 2026 · Paper 2Complete the table by inserting the missing quantities, unit names and unit symbols for the given SI base units.
26. 1(b)(i)3 marks· Physics · Unit 1 Q1 1(b)(i)Determine the units of k.
27. 3(a)2 marks· Physics · Unit 1 Q3 3(a)Show that both sides of the relation PV = (1/3) N mc² have the same fundamental units.
28. 4(a)(i)1 mark· Physics · Unit 1 Q4 4(a)(i)State the SI base unit of volume.
29. 4(a)(ii)2 marks· Physics · Unit 1 Q4 4(a)(ii)The value of radial acceleration is given by the expression v²/r, where v is the speed and r is the radius of the path. Using base units, show that this expression is dimensionally correct.
30. 4(a)(ii)3 marks· Physics · Unit 1 Q4 4(a)(ii)Determine the base unit of C.
31. 4(c)3 marks· Physics · Unit 1 Q4 4(c)By comparing the units, find the value of x.
32. 5(a)(i)7 marks· Physics · Unit 1 Q5 5(a)(i)Three important 'base quantities' are mass, length and time. Explain the term 'base quantity' and give another example of a 'base quantity'.
33. 5(a)(ii)1 mark· Physics · Unit 1 Q5 5(a)(ii)If in another system of units the base quantities and units are mass/kg, length/m, and force/N, what would be the unit of time?
34. 5(a)(iii)1 mark· Physics · Unit 1 Q5 5(a)(iii)How would you use base quantities or units to check the homogeneity of physical equations? State ONE way in which an equation that is homogeneous may, nevertheless, be physically incorrect.
35. 5(b)(i)13 marks· Physics · Unit 1 Q5 5(b)(i)Assuming the given equation to be homogeneous, show that the SI unit of η is N s m⁻².