Physics Random Retrieval Y12

Physics Year 12 Random Retrieval

This quiz contains all the questions in the Physics Year 12 section. The website will pick 10 questions at random.

1 / 10

Select the SI unit for Work.

Js^-1

m kg s^-1

m²kg s^-2

m²kg s^-3

2 / 10

A bullet of mass 4.02 g is fired at a speed of 940 ms^-1 from an SA-80 rifle. The bullet strikes a block of hardwood of mass 0.512 kg hanging at rest from a long string. The bullet enters the wood and becomes lodged in the block. Calculate the initial speed the wooden block from rest immediately after impact.

1.28 ms^-1

1.84 ms^-1

7.3 ms^-1

73.2 ms^-1

3 / 10

The International Space Station remains in orbit in space, which Newtonian Law applies, if any?

Newton's First Law

Newton's Second Law

Newton's Third Law

None

4 / 10

Estimate the velocity between 2 s and 6 s on the graph shown.

0.75 ms^-1

1.00 ms^-1

1.25 ms^-1

1.50 ms^-1

5 / 10

The unit for energy is the Joule, what is this in SI base units?

m²kg s^-2

m²kg s^-3

m kg s²

Js^-1

6 / 10

Laura Kenny can reach 1070 W cycling on her bike. If she was a 12 V battery, what would her current be?

0.01 A

12 A

89 A

1284 A

7 / 10

Copper has a resistivity of 1.724x10^-8 Ω m at 20 °C. Calculate the resistance of a piece of copper wire that measures 40 cm long and has a diameter of 0.8 mm.

0.0034 Ω

0.0137 Ω

0.343 Ω

1.372 Ω

8 / 10

A new material is developed and the research team want to know the amount of elastic strain energy it can store. They test the material multiple times and plot a graph with the averages. Estimate from the graph the elastic strain energy that is stored in the wire up to the limit of proportionality.

4.0 J

5.85 J

6.75 J

11.7 J

9 / 10

What is the technique used in ultrasound scanning?

Sonar

Pulse-Echo

US-Reflection

Transducing

10 / 10

Where is the brightest maxima located?

zero order

1st order

2nd order

nth order

Your score is

Working as a Physicist Random Retrieval

This quiz contains all the questions in the Working as a Physicist section. The website will pick 10 questions at random.

1 / 10

How many significant figures are in 1994?

2 / 10

What is 0.0000176700 to 2 significant figures.

0.000017

0.0000177

0.000018

0.0000180

3 / 10

Which is the SI unit for time?

hour

parsec

second

4 / 10

Which unit measures power?

watts

joules

volts

5 / 10

What multiple of unit does kilo (k) have?

1 x 10³

1 x 10⁶

1 x 10 ⁹

6 / 10

What multiple of unit does pico (p) have?

1 x 10^-9

1 x 10^-12

1 x 10 ^-15

7 / 10

What multiple of unit does femto (f) have?

1 x 10^-15

1 x 10¹²

1 x 10 ¹⁵

8 / 10

What multiple of unit does centi (c) have?

1 x 10^-1

1 x 10^-2

1 x 10 ^-3

9 / 10

What is a fair test?

A fair test is when only the independent variable has been allowed to affect the dependent variable.

A fair is when you repeat the experiment until you have concurrent results.

A fair test is when results are taken three times and an average is found.

10 / 10

Which is not an action to reduce random errors in an investigation.

Calibrate apparatus by measuring a known value.

Take 3 repeats and calculate a mean.

Use equipment with an appropriate scale.

Use a computer/data logger where available.

Your score is

Mechanics Random Retrieval

This quiz contains all the questions in the Mechanics section. The website will pick 10 questions at random.

1 / 10

A VW campervan cruises along a straight, flat Autobahn at a speed of 130 kmh^-1. The total resistive force, due to air resistance, is 900 N.

If the overall efficiency of the campervan is 18%, calculate the energy obtained from its fuel during 42 km journey.

3.25x10⁷ J

5.85x10⁷ J

1.23x10¹⁰ J

6.81x10¹⁰ J

2 / 10

Sheffield is famous for its snooker. A 170 g white ball is struck with a cue and travels along the snooker table at 12 ms^-1. Calculate it's momentum.

2.04 kg ms^-1

204 kg ms^-1

2040 kg ms^-1

3 / 10

The International Space Station remains in orbit in space, which Newtonian Law applies, if any?

Newton's First Law

Newton's Second Law

Newton's Third Law

None

4 / 10

You can feel your phone in your hand, which Newtonian Law applies, if any?

Newton's First Law

Newton's Second Law

Newton's Third Law

None

5 / 10

This graph shows a falling object at its terminal velocity. Calculate its velocity.

0.75 ms^-1

0.78 ms^-1

1.5 ms^-1

1.56 ms^-1

6 / 10

A climber falls from a rock face and accelerates due to gravity for 3 seconds before his rope stops his fall. What distance did he fall?

14.7 m

29.4 m

44.1 m

88.3 m

7 / 10

A diver steps off the end of the 10 m board, free falls, then hits the water before travelling underwater 4 m in 2 seconds. Calculate his speed upon hitting the water. g = 9.81 ms^-2

5.09 ms^-1

8.00 ms^-1

14.01 ms^-1

19.62 ms^-1

8 / 10

Select if the following is a scalar or a vector: energy

Scalar

Vector

9 / 10

Select if the following is a scalar or a vector: momentum

Scalar

Vector

10 / 10

Select if the following is a scalar or a vector: mass

Scalar

Vector

Your score is

Electric Circuits Random Retrieval

This quiz contains all the questions in the Electric Circuits section. The website will pick 10 questions at random.

1 / 10

The unit of charge is the coulomb. A correct alternative unit is:

JAΩ

JA^-1Ω^-1

JAΩ^-1

JA^-1Ω

2 / 10

Select the correct potential divider equation.

3 / 10

Calculate the current at A₁ in the circuit shown.

0.21 A

0.51 A

0.79 A

1.37 A

4 / 10

Which of these expressions is not a correct expression for calculating the electrical power of a circuit?

Expression A

Expression B

Expression C

Expression D

5 / 10

A resistor in a circuit has a current through it of 0.20 A when the potential difference across it is 15 V. Calculate the resistance of the resistor.

0.013 Ω

3 Ω

75 Ω

130 Ω

6 / 10

In this diagram, what should the potential difference of the missing value be?

2 V

4 V

8 V

0 V

7 / 10

A microwave runs off the mains in the U.K. and has an efficiency of 98%. Calculate how much electric charge will pass through the microwave per second if it transfers 1.31kJ of energy.

5.58 C

5.70 C

5.81 C

5.94 C

8 / 10

Which piece of equipment can be used to measure the potential difference in a circuit?

Ammeter

Voltmeter

Luxmeter

Newton Meter

9 / 10

The current in a circuit depends on the mean drift velocity of the charge carriers. This can be defined by this equation, what is the current if the cross sectional area of the material doubles?

I/2

I²

10 / 10

Calculate the the time taken for a current of 5.2 mA to reach a charge of 25 C.

0.13 seconds

4.8 seconds

2 minutes 10 seconds

80 minutes 8 seconds

Your score is

Materials Random Retrieval

This quiz contains all the questions in the Materials section. The website will pick 10 questions at random.

1 / 10

HMS Astute is a nuclear-powered submarine in service with the Royal Navy, she can dive to depth of 300 m in seawater of density 1024 kgm^-3. If the pressure inside the submarine is kept at sea level (1.01x10⁵ Pa), calculate the resultant force on a section of the hull of area 20 m² at her maximum depth.

2.1x10⁸ N

3.4x10⁸ N

5.8x10⁸ N

6.0x10⁸ N

2 / 10

When a ball bearing is dropped through a liquid of unknown viscosity, the sum of all the forces equal ___________.

Zero

The overall weight.

The overall drag.

The overall upthrust

3 / 10

Which material is the densest?

4 / 10

Stress and strain are used to calculate the Young's modulus of a material up to its _____________.

elastic limit.

limit of proportionality.

yield point.

breaking point.

5 / 10

The Young's Modulus for a single walled carbon fibre nanotubes of diameter 4 nm is 1000 GPa. If it is placed under 75% strain, what force is required to break it?

3.8x10^-6 N

9.4x10^-6 N

3.8x10³⁰ N

9.4x10³⁰ N

6 / 10

A material has a stress of 6x10⁸ Nm^-2 and is placed under a 5% strain. Calculate the value for the materials Young's modulus.

1.2x10⁸ Nm^-2

3x10⁹ Nm^-2

1.2x10¹⁰ Nm^-2

3x10¹¹ Nm^-2

7 / 10

A 500 mm material undergoes a strain of -3.2%, when measured what is the materials length?

484 mm

492 mm

508 mm

516 mm

8 / 10

Which material on the graph above is the weakest?

9 / 10

4.0 J

5.85 J

6.75 J

11.7 J

10 / 10

Two nichrome wires, A and B, have a load of 30 N placed on them each. The original lengths of the wires are 3 m and 2 m. Each wire shows the same extension. Find the ratio of A_k to B_k.

1 : 1

3 : 2

1.5 : 1

Unable to calculate from information given.

Your score is

Waves & the Nature of Light Random Retrieval

This quiz contains all the questions in the Waves & the Nature of Light section. The website will pick 10 questions at random.

1 / 10

Which phenomenon is not an example of light as a wave?

Diffraction

Reflection

Photoelectric effect

Polarisation

2 / 10

Photons are an example of light as a __________.

Wave

Particle

3 / 10

Calculate the wavelength of a monochromatic light incident on a diffraction grating of 2.67x10⁶ lines per metre with an angle of 17° to the first order maxima.

5.40x10^-8 m

1.09x10^-7 m

4.54x10³ m

7.81x10⁵ m

4 / 10

Reducing the width of a single slit that has monochromatic light passing through affects the central maximum, how?

The width and intensity both increase

The width and intensity both decrease

The width is unchanged but intensity decreases

The width increases but the intensity decreases

5 / 10

A diffraction grating has 350 slits per metre, what the slit spacing, d?

¹/₃₅₀

175

350

700

6 / 10

Which lens causes light to diverge?

Convex

Concave

7 / 10

Light travelling through air is incident on glass at an angle of 23°. The refractive index of the glass is 1.52. Calculate the angle of refraction.

0.3°

14.9°

23.0°

25.7°

8 / 10

Calculate the critical angle for the boundary when light leaves a medium of refractive index 1.52 and enters air.

0.01°

0.65°

41.1°

65.7°

9 / 10

The speed of light in the core of a fibre optic cable is 2.04x10⁸ ms^-1. Calculate the refractive index.

0.68

1.27

1.47

10 / 10

Soumya plays a note of wavelength 25 cm on her synthesiser. She knows the speed of sound is 340 ms^-1 in air. Calculate the frequency.

13.6 Hz

85 Hz

1360 Hz

8.5 kHz

Your score is

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