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Questions and Answers
A sphere falls through air at terminal velocity. If the upthrust is negligible, which statement is correct regarding the forces acting on the sphere?
A sphere falls through air at terminal velocity. If the upthrust is negligible, which statement is correct regarding the forces acting on the sphere?
- The weight of the sphere is greater than the drag force.
- The weight of the sphere is less than the drag force.
- The weight of the sphere is equal to the drag force. (correct)
- The weight of the sphere is constantly changing.
The drag force ((F_D)) on an object is defined by the equation (F_D = \frac{1}{2} C \rho A v^2). If the drag coefficient ((C)) is dimensionless, what are the base units of the drag force?
The drag force ((F_D)) on an object is defined by the equation (F_D = \frac{1}{2} C \rho A v^2). If the drag coefficient ((C)) is dimensionless, what are the base units of the drag force?
- kg m s^-1
- kg m^-2 s^-2
- kg m^2 s^-2
- kg m s^-2 (correct)
A ball is thrown at an angle of $40^\circ$ to the horizontal with an initial velocity of 22 m/s. What is the vertical component of the initial velocity?
A ball is thrown at an angle of $40^\circ$ to the horizontal with an initial velocity of 22 m/s. What is the vertical component of the initial velocity?
- 22 / sin(40) m/s
- 22 * cos(40) m/s
- 22 / cos(40) m/s
- 22 * sin(40) m/s (correct)
An object of mass (2m) collides with an object of mass (3m). If the system is isolated, which statement about the total momentum is correct?
An object of mass (2m) collides with an object of mass (3m). If the system is isolated, which statement about the total momentum is correct?
An object moving at 6.0 m/s is brought to rest by a constant force over a distance of 0.050 m. If the mass of the object is 4.2 kg, what is the magnitude of the force?
An object moving at 6.0 m/s is brought to rest by a constant force over a distance of 0.050 m. If the mass of the object is 4.2 kg, what is the magnitude of the force?
A copper wire of length 4.0 m and cross-sectional area (4.5 imes 10^{-7} \text{ m}^2) is subjected to a tensile force. What effect does the wire's extension have on its Young Modulus?
A copper wire of length 4.0 m and cross-sectional area (4.5 imes 10^{-7} \text{ m}^2) is subjected to a tensile force. What effect does the wire's extension have on its Young Modulus?
Two copper wires have the same length, but one has a larger diameter. If both wires are subjected to the same tensile force, which statement about the stress and strain in the wires is correct?
Two copper wires have the same length, but one has a larger diameter. If both wires are subjected to the same tensile force, which statement about the stress and strain in the wires is correct?
A stretched string is attached to a vibration generator at one end and a wall at the other. What phenomenon is primarily responsible for the formation of a stationary wave along the string?
A stretched string is attached to a vibration generator at one end and a wall at the other. What phenomenon is primarily responsible for the formation of a stationary wave along the string?
A stationary wave has a wavelength of 1 m. What is the distance between two adjacent nodes?
A stationary wave has a wavelength of 1 m. What is the distance between two adjacent nodes?
Two points, R and T, on a stationary wave are separated by a horizontal distance of 0.30 m. If these points are in phase, what could their phase difference be?
Two points, R and T, on a stationary wave are separated by a horizontal distance of 0.30 m. If these points are in phase, what could their phase difference be?
Kirchhoff's first law is based on the principle of...
Kirchhoff's first law is based on the principle of...
A cell with internal resistance is connected to two resistors in series. What is an effect of increasing the internal resistance of the cell?
A cell with internal resistance is connected to two resistors in series. What is an effect of increasing the internal resistance of the cell?
A cell with an e.m.f. of 1.50 V has a terminal p.d. of 1.35 V when connected to two resistors with values (10 \Omega) and (15 \Omega) in series. What can be inferred about the internal resistance of the cell?
A cell with an e.m.f. of 1.50 V has a terminal p.d. of 1.35 V when connected to two resistors with values (10 \Omega) and (15 \Omega) in series. What can be inferred about the internal resistance of the cell?
In a radioactive decay, a copper isotope ((^{66}_{29}Cu)) emits a (\beta^-) particle. What happens to the nucleon number and proton number of the resulting nucleus?
In a radioactive decay, a copper isotope ((^{66}_{29}Cu)) emits a (\beta^-) particle. What happens to the nucleon number and proton number of the resulting nucleus?
What is the term used to describe a Helium nucleus that is emitted during radioactive decay?
What is the term used to describe a Helium nucleus that is emitted during radioactive decay?
Which of the following quantities is NOT a base SI unit?
Which of the following quantities is NOT a base SI unit?
A square solar panel receives light with a power of 750 W. Each side of the panel is 1300 mm long. What is the intensity of the light?
A square solar panel receives light with a power of 750 W. Each side of the panel is 1300 mm long. What is the intensity of the light?
The percentage uncertainty in the power incident on a solar panel is $\pm 3$% and the uncertainty in the length of each side is $\pm 5$%. What is the percentage uncertainty in the intensity of the light?
The percentage uncertainty in the power incident on a solar panel is $\pm 3$% and the uncertainty in the length of each side is $\pm 5$%. What is the percentage uncertainty in the intensity of the light?
A skydiver jumps from an aircraft. After some time, she opens her parachute. Why does the skydiver's acceleration change when the parachute opens?
A skydiver jumps from an aircraft. After some time, she opens her parachute. Why does the skydiver's acceleration change when the parachute opens?
A skydiver of mass 68 kg opens a parachute at time (t_1), experiencing a drag force of 1800 N. What is the direction of the acceleration at that time?
A skydiver of mass 68 kg opens a parachute at time (t_1), experiencing a drag force of 1800 N. What is the direction of the acceleration at that time?
Lightning strikes occur when there is a potential difference between the ground and atmosphere. During a lightning strike there is an average current of (3.3 imes 10^4 \text{ A}) for a (2.6 \times 10^{-5} \text{ s}). What quantity is determined by multiplying these two numbers together?
Lightning strikes occur when there is a potential difference between the ground and atmosphere. During a lightning strike there is an average current of (3.3 imes 10^4 \text{ A}) for a (2.6 \times 10^{-5} \text{ s}). What quantity is determined by multiplying these two numbers together?
A lightning rod is attached to a tall building. The potential difference between the ground and atmosphere is (3.0 \times 10^7 \text{ V}) during a lightning strike. If the average current of (3.3 imes 10^4 \text{ A}) flows during the strike, what is the average power transferred during the lightning strike?
A lightning rod is attached to a tall building. The potential difference between the ground and atmosphere is (3.0 \times 10^7 \text{ V}) during a lightning strike. If the average current of (3.3 imes 10^4 \text{ A}) flows during the strike, what is the average power transferred during the lightning strike?
The radius of a copper lightning rod is doubled. What effect does this have on the rods electrical Resistance?
The radius of a copper lightning rod is doubled. What effect does this have on the rods electrical Resistance?
A pinball machine contains a spring to launch the ball. What form of energy is stored in the compressed spring?
A pinball machine contains a spring to launch the ball. What form of energy is stored in the compressed spring?
A pinball machine uses a spring to launch a 4.5 10^-2 kg ball up a ramp. The spring has a spring constant of 29 N/m and is compressed. What could explain a situation where the ball fails to reach the expected height on the ramp?
A pinball machine uses a spring to launch a 4.5 10^-2 kg ball up a ramp. The spring has a spring constant of 29 N/m and is compressed. What could explain a situation where the ball fails to reach the expected height on the ramp?
A ball comes to rest on a horizontal trapdoor. A force acts vertically downwards at 2 cm from the pivot. The trapdoor is in equilibrium then the force decreases by 1.7 N. What happens to trapdoor?
A ball comes to rest on a horizontal trapdoor. A force acts vertically downwards at 2 cm from the pivot. The trapdoor is in equilibrium then the force decreases by 1.7 N. What happens to trapdoor?
Which statement accurately outlines Kirchhoff's second law?
Which statement accurately outlines Kirchhoff's second law?
A battery of e.m.f. 9.0V is connected in series with a variable resistor X and a thermistor Y. The temperature of thermistor Y is changed to (190^{\circ} \text{C}). The resistance of X remains unchanged. At(190^{\circ} \text{C}), the potential difference across Y increases. What deduction can you make regarding Y?
A battery of e.m.f. 9.0V is connected in series with a variable resistor X and a thermistor Y. The temperature of thermistor Y is changed to (190^{\circ} \text{C}). The resistance of X remains unchanged. At(190^{\circ} \text{C}), the potential difference across Y increases. What deduction can you make regarding Y?
A circuit contains a diffraction grating. The resulting interference pattern of bright and dark fringes form into what pattern on a semicircular screen?
A circuit contains a diffraction grating. The resulting interference pattern of bright and dark fringes form into what pattern on a semicircular screen?
Light is replaced with red light of a single frequency. What happens to that light?
Light is replaced with red light of a single frequency. What happens to that light?
Select the option that accurately describes quarks.
Select the option that accurately describes quarks.
Nuclei of an isotope of samarium each contain 62 protons and 85 neutrons. Which option is the correct nuclide notation in the form $\frac{A}{Z}X$ for this isotope of samarium?
Nuclei of an isotope of samarium each contain 62 protons and 85 neutrons. Which option is the correct nuclide notation in the form $\frac{A}{Z}X$ for this isotope of samarium?
An isotope of samarium is radioactive and decays by emitting particles, but not gamma-radiation. According to the figure, which particle is emitted?
An isotope of samarium is radioactive and decays by emitting particles, but not gamma-radiation. According to the figure, which particle is emitted?
A baryon is composed of three quarks which all have different flavours, and charge of 0. What would be the charge of the third quirk give that up quark and a bottom quark?
A baryon is composed of three quarks which all have different flavours, and charge of 0. What would be the charge of the third quirk give that up quark and a bottom quark?
In a medium, when the drag force is defined, which are the correct statements.
In a medium, when the drag force is defined, which are the correct statements.
Which formula does not represent the upthrust acting on a body?
Which formula does not represent the upthrust acting on a body?
An object is projected horizontally at a speed of 6.0ms. The slope is at an angle 8 to the horizontal. What is air resistance?
An object is projected horizontally at a speed of 6.0ms. The slope is at an angle 8 to the horizontal. What is air resistance?
A graph presents Hook's law. What does the letter X indicate?
A graph presents Hook's law. What does the letter X indicate?
A wave moves from left to right. Where and what way does point T move?
A wave moves from left to right. Where and what way does point T move?
What do dippers to a water?
What do dippers to a water?
Flashcards
Drag Force
Drag Force
Force that opposes the motion of an object through a fluid.
Displacement
Displacement
Distance traveled in a specified direction.
Conservation of Momentum
Conservation of Momentum
States that in an isolated system, total momentum remains constant.
Young Modulus
Young Modulus
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Strain
Strain
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Stationary Wave
Stationary Wave
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Kirchhoff's First Law
Kirchhoff's First Law
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Kirchhoff's Second Law
Kirchhoff's Second Law
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Baryon
Baryon
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Wavelength
Wavelength
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Hooke's Law
Hooke's Law
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Study Notes
- Cambridge International AS & A Level Physics, Paper 2 AS Level Structured Questions, May/June 2024, with a duration of 1 hour 15 minutes
- Paper has total marks of 60
- Instructions include answering all questions, using a black or dark blue pen (HB pencil can be used for diagrams/graphs), writing details in the top boxes, answering in the space provided, not using erasable pens/correction fluid, not writing on bar codes, using a calculator, and showing all workings with appropriate units
Constants and Conversions
- Acceleration of free fall (g): 9.81 m/s²
- Speed of light in free space (c): 3.00 × 10⁸ m/s
- Elementary charge (e): 1.60 × 10⁻¹⁹ C
- Unified atomic mass unit (1 u): 1.66 × 10⁻²⁷ kg
- Rest mass of proton (mp): 1.67 × 10⁻²⁷ kg
- Rest mass of electron (me): 9.11 × 10⁻³¹ kg
- Avogadro constant (NA): 6.02 × 10²³ mol⁻¹
- Molar gas constant (R): 8.31 J K⁻¹ mol⁻¹
- Boltzmann constant (k): 1.38 × 10⁻²³ J K⁻¹
- Gravitational constant (G): 6.67 × 10⁻¹¹ N m² kg⁻²
- Permittivity of free space (ε₀): 8.85 × 10⁻¹² F m⁻¹
- Constant related to permittivity: (1 / 4πε₀) = 8.99 × 10⁹ m F⁻¹
- Planck constant (h): 6.63 × 10⁻³⁴ J s
- Stefan–Boltzmann constant (σ): 5.67 × 10⁻⁸ W m⁻² K⁻⁴
Equations
- Uniformly accelerated motion:
- s = ut + (1/2)at²
- v² = u² + 2as
- Hydrostatic pressure: Δp = ρgΔh
- Upthrust: F = ρgV
- Doppler effect for sound waves: f₀ = (fs v) / (v ± vs) Note: (v!v) is used to represent the Doppler effect formula with v ± vs
- Electric current: I = Anvq
- Resistors in series: R = R₁ + R₂ + ...
- Resistors in parallel: 1/R = 1/R₁ + 1/R₂ + ...
Drag Force
- Describes the drag force FD on a sphere falling through a liquid
- Given by: FD = 6πηrv
- r is the sphere's radius
- v is the speed in the liquid
- η is the liquid's viscosity
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