Date | November 2020 | Marks available | 1 | Reference code | 20N.1.SL.TZ0.1 |
Level | Standard level | Paper | Paper 1 | Time zone | 0 - no time zone |
Command term | Question number | 1 | Adapted from | N/A |
Question
Which quantity has the same units as those for energy stored per unit volume?
A. Density
B. Force
C. Momentum
D. Pressure
Markscheme
D
Examiners report
Syllabus sections
- 17N.1.SL.TZ0.1: How many significant figures are there in the number 0.0450? A. 2 B. 3 C. 4 D. 5
- 18M.1.SL.TZ2.1: What is the best estimate for the diameter of a helium nucleus? A. 10–21 m B. 10–18...
- 18M.1.SL.TZ2.10: Which is a unit of force? A. J m B. J m–1 C. J m s–1 D. J m–1 s
- 17M.1.SL.TZ1.1: What is the unit of electrical energy in fundamental SI units? A. kg m2 C–1 sB. kg m s–2C....
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17M.3.SL.TZ1.1e:
The equation in (b) may be used to predict the pressure of the air at extremely large values of . Suggest why this will be an unreliable estimate of the pressure.
- 16N.1.SL.TZ0.1: A boy jumps from a wall 3m high. What is an estimate of the change in momentum of the boy...
- 16N.1.SL.TZ0.2: Light of wavelength 400nm is incident on two slits separated by 1000µm. The interference...
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22M.2.SL.TZ1.2a:
Estimate the power input to the heating element. State an appropriate unit for your answer.
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22M.2.HL.TZ2.8a.ii:
State the fundamental SI unit for your answer to (a)(i).
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17M.3.SL.TZ1.2b:
In a different experiment a student investigates the dependence of the period T of a simple pendulum on the amplitude of oscillations θ. The graph shows the variation of with θ, where T0 is the period for small amplitude oscillations.
The period may be considered to be independent of the amplitude θ as long as . Determine the maximum value of θ for which the period is independent of the amplitude.
- 22M.1.SL.TZ1.1: What is the order of magnitude of the wavelength of visible light? A. 10−10 m B. ...
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22M.1.HL.TZ1.1:
The intensity of a wave can be defined as the energy per unit area per unit time. What is the unit of intensity expressed in fundamental SI units?
A. kg m−2 s−1
B. kg m2 s−3
C. kg s−2
D. kg s−3
- 17M.1.SL.TZ1.15: Two pulses are travelling towards each other. What is a possible pulse shape when the...
- 18N.1.SL.TZ0.1: What is the unit of power expressed in fundamental SI units? A. kg m s–2 B. ...
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18N.1.SL.TZ0.15:
The graphs show the variation of the displacement y of a medium with distance and with time t for a travelling wave.
What is the speed of the wave?
A. 0.6 m s–1
B. 0.8 m s–1
C. 600 m s–1
D. 800 m s–1
- 18N.3.SL.TZ0.2a: Outline why, during the experiment, V and I should be kept constant.
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18M.3.SL.TZ1.1b.ii:
A student forms a hypothesis that the period of one oscillation P is given by:
where K is a constant.
Determine the value of K using the point for which B = 0.005 T.
State the uncertainty in K to an appropriate number of significant figures.
- 19N.1.SL.TZ0.1: Which quantity has the fundamental SI units of kg m–1 s–2? A. EnergyB. ForceC. MomentumD....
- 18N.3.SL.TZ0.2b: Outline whether the value of Lv calculated in this experiment is expected to be larger or...
- 19N.1.SL.TZ0.28: What are the units of specific energy and energy density?
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18N.2.SL.TZ0.2a:
Each rod is to have a resistance no greater than 0.10 Ω. Calculate, in m, the minimum radius of each rod. Give your answer to an appropriate number of significant figures.
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18M.3.SL.TZ2.2c:
Explain the disadvantage that a graph of I versus has for the analysis in (b)(i) and (b)(ii).
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19M.1.SL.TZ1.2:
A student models the relationship between the pressure p of a gas and its temperature T as p = + T.
The units of p are pascal and the units of T are kelvin. What are the fundamental SI units of and ?
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18M.3.SL.TZ2.2a:
This relationship can also be written as follows.
Show that .
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18N.2.HL.TZ0.4b:
The speed of sound c for longitudinal waves in air is given by
where ρ is the density of the air and K is a constant.
A student measures f to be 120 Hz when the length of the pipe is 1.4 m. The density of the air in the pipe is 1.3 kg m–3. Determine the value of K for air. State your answer with the appropriate fundamental (SI) unit.
- 16N.3.SL.TZ0.2a: The graph shows the data recorded. Identify the fundamental SI unit for the gradient of...
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18N.2.HL.TZ0.2a:
Each rod is to have a resistance no greater than 0.10 Ω. Calculate, in m, the minimum radius of each rod. Give your answer to an appropriate number of significant figures.
- 17N.1.HL.TZ0.1: What is a correct value for the charge on an electron? A. 1.60 x 10–12 μC B. 1.60 x 10–15...
- 19N.3.SL.TZ0.1a: Suggest, by reference to the graph, why it is unlikely that the relationship between T and v...
- 19N.3.SL.TZ0.1c: The student hypothesizes that the relationship between T and v is T = a + bv2, where a and b...
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18M.3.SL.TZ2.2b.ii:
Determine P, to the correct number of significant figures including its unit.
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18N.3.SL.TZ0.2c:
A student suggests that to get a more accurate value of Lv the experiment should be performed twice using different heating rates. With voltage and current V1, I1 the mass of water that vaporized in time t is m1. With voltage and current V2, I2 the mass of water that vaporized in time t is m2. The student now uses the expression
to calculate Lv. Suggest, by reference to heat losses, why this is an improvement.
- 19M.1.SL.TZ2.2: What is the unit of electrical potential difference expressed in fundamental SI units? A. kg...
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16N.3.SL.TZ0.2b:
The experiment is repeated using a different gas in the glass jar. The pressure for both experiments is low and both gases can be considered to be ideal.
(i) Using the axes provided in (a), draw the expected graph for this second experiment.
(ii) Explain the shape and intercept of the graph you drew in (b)(i).
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19M.3.SL.TZ2.2bi:
Determine the fundamental SI unit for k.
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17M.3.SL.TZ2.1c.i:
State the fundamental SI unit of the constant a and of the constant b.
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17M.3.SL.TZ1.1b:
The following graph of p versus was obtained. Error bars were negligibly small.
The equation of the line of best fit is .
Determine the value of b including an appropriate unit.
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18M.3.SL.TZ2.2b.i:
Estimate C.
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22M.2.HL.TZ2.9b:
Estimate, using the result in (a)(iii), the volume of a tin-118 nucleus. State your answer to an appropriate number of significant figures.
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20N.3.SL.TZ0.1b(ii):
Identify the fundamental units of .
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20N.2.SL.TZ0.3a(ii):
Estimate the specific heat capacity of the oil in its liquid phase. State an appropriate unit for your answer.
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18N.2.SL.TZ0.4b:
The speed of sound c for longitudinal waves in air is given by
where ρ is the density of the air and K is a constant.
A student measures f to be 120 Hz when the length of the pipe is 1.4 m. The density of the air in the pipe is 1.3 kg m–3. Determine, in kg m–1 s–2, the value of K for air.
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21M.2.SL.TZ2.3a:
The charge per unit area on the surface of the wall is σ. It can be shown that the electric field strength E due to the charge on the wall is given by the equation
.
Demonstrate that the units of the quantities in this equation are consistent.
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21M.2.HL.TZ2.10a:
Calculate, for the surface of , the gravitational field strength gIo due to the mass of . State an appropriate unit for your answer.
- 21M.1.HL.TZ1.31: Which is a correct unit for gravitational potential? A. m2 s−2 B. J kg C. m s−2 D....
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19M.3.SL.TZ1.2a:
Suggest why the student’s data supports the theoretical prediction.
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21M.1.SL.TZ2.2:
What is the unit of power expressed in fundamental SI units?
A.
B.
C.
D.
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21M.2.SL.TZ2.3c:
The centre of the ball, still carrying a charge of , is now placed from a point charge Q. The charge on the ball acts as a point charge at the centre of the ball.
P is the point on the line joining the charges where the electric field strength is zero.
The distance PQ is .Calculate the charge on Q. State your answer to an appropriate number of significant figures.
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19N.3.SL.TZ0.2a(i):
Estimate the resistivity of the material of the wire. Give your answer to an appropriate number of significant figures.
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21M.2.HL.TZ2.3a:
The charge per unit area on the surface of the wall is σ. It can be shown that the electric field strength E due to the charge on the wall is given by the equation
.
Demonstrate that the units of the quantities in this equation are consistent.
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21M.2.SL.TZ2.1d:
The player kicks the ball again. It rolls along the ground without sliding with a horizontal velocity of . The radius of the ball is . Calculate the angular velocity of the ball. State an appropriate SI unit for your answer.
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21M.2.SL.TZ1.1d.ii:
Player B intercepts the ball when it is at its peak height. Player B holds a paddle (racket) stationary and vertical. The ball is in contact with the paddle for 0.010 s. Assume the collision is elastic.
Calculate the average force exerted by the ball on the paddle. State your answer to an appropriate number of significant figures.
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19M.1.SL.TZ2.5:
An object has a weight of 6.10 × 102 N. What is the change in gravitational potential energy of the object when it moves through 8.0 m vertically?
A. 5 kJ
B. 4.9 kJ
C. 4.88 kJ
D. 4.880 kJ
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22M.2.SL.TZ1.1c.ii:
The radius of the pulley is 2.5 cm. Calculate the angular speed of rotation of the pulley as the load hits the floor. State your answer to an appropriate number of significant figures.