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

Shoaib Akhtar is the fastest bowler ever. He throws a cricket ball of 163 g at a speed of 161.3km h^-1 which strikes a stationary cricket bat. Calculate the momentum of the ball before the collision.

7.3 kg ms^-1

26.3 kg ms^-1

1.6x10⁴ kg ms^-1

7.3x10⁴ kg ms^-1

2 / 10

A student moves a table in class by pushing it at an angle of 11° with a force of 200 N. Calculate the vertical component.

38.1 N

38.2 N

196.3 N

196.4 N

3 / 10

A bride excitedly throws a bouquet of flowers behind her back at 12 ms^-1 her wedding at an angle of 45°. They are released from a height of 2.1 m and are caught just off the floor by her best man Sam.

Calculate how far away Sam was stood. g_Earth = 9.81 ms^-2

3 m

10 m

11 m

17 m

4 / 10

David walks 6 km west then 8 km north. Calculate his displacement.

6 km

8 km

10 km

14 km

5 / 10

A battery of e.m.f. 7 V is connected across a 42 Ω resistor. If the potential difference across the resistor is 6 V, calculate the internal resistance of the cell.

6 A

7 A

8 A

9 A

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

How should you connect a potential difference measuring piece of equipment in a circuit?

It doesn't need connecting to the circuit.

In parallel to the battery.

In parallel to the component you want to know the potential difference over.

In series.

8 / 10

The unit for charge is Coulombs, what is this in SI base units?

A s^-1

A s

A s²

9 / 10

Which way does current flow in a circuit?

Negative to positive

Positive to negative

Clockwise

Anti-clockwise

10 / 10

What is 1291 to 2 significant figures.

1000

1200

1290

1300

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

What is 100.249 to 2 decimal places.

100.00

100.20

100.25

100.30

2 / 10

What is 3.1415 to 1 significant figure.

3.1

3.10

3.14

3 / 10

What is 40011 to 2 significant figures.

40000

40001

40010

40011

4 / 10

Which unit measures force?

Newtons

kilograms

pascals

5 / 10

What is 300 μm in meters?

0.0003 m

0.003 m

0.03 m

6 / 10

Identify the dependent variable: Investigating the braking distance of different cars.

Type of car

Braking distance

Road surface

7 / 10

Select the graph that best represents the algebraic expression: y = b

8 / 10

Calculate the gradient of the graph shown.

0.25

0.4

0.6

1.2

9 / 10

Calculate the gradient of the graph shown.

-1.28

-0.80

1.28

2.32

10 / 10

Select the missing word: _______ errors affect precision.

Random

Systematic

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 bungee jumper of mass 74 kg, falls 68.5 m before the bungee cord begins to stretch. Calculate the gravitational potential energy lost by the bungee jumper in falling 68.5 m. g = 9.81 Nkg^-1.

4.97x10⁴ J

5.07x10⁴ J

4.97x10⁵ J

5.07x10⁵ J

2 / 10

Physical Disability Rugby League (PDRL) is a format of rugby league for those with impairments. Anthony Seward (Warrington Wolves) has a mass of 70 kg and Sam Zeller (Leeds Rhinos) has a mass of 65 kg. Anthony is at rest and Sam runs towards him at a speed of 8 ms^-1. They move together in the same direction, calculate at what speed.

0 ms^-1. They do not move.

1.45 ms^-1

2.8 ms^-1

3.0 ms^-1

3 / 10

Select the missing phrase. "A joiner uses a hammer to hit a nail into wood. When the hammer strikes the nail, _____________

the nail exerts an equal force back on the hammer and doesn't move.

the nail exerts an equal force back on the hammer and moves into the wood.

the nail exerts a force proportional to its size back on the hammer and doesn't move.

the nail exerts a force proportional to its size back on the hammer and moves into the wood.

4 / 10

A mug of tea (T_m) is at rest on a table. Select the correct pairing of forces.

Gravitational force pulls (T_m) towards the table. (T_m) pushes on the table in the opposite direction.

(T_m) pushes on the table. The table pushes back on (T_m) in the opposite direction.

(T_m) pulls the table towards it with gravitational force. The table pushes back on (T_m) in the opposite direction.

(T_m) pushes on the table. The table is pulled down by gravitational force.

5 / 10

A mass of 3 kg is hung on a forcemeter then dropped from the top of a building 10m high. Select the reading shown on the balance while the mass and the balance are falling together. g = 9.81 ms^-2.

0 N

3 N

29 N

294 N

6 / 10

A student moves a table in class by pushing it at an angle of 11° with a force of 200 N. Calculate the vertical component.

38.1 N

38.2 N

196.3 N

196.4 N

7 / 10

Choose the best graph that matches the following scenario: A rugby player accelerates for 3 seconds before making contact and coming to a complete stop. She then accelerates again, until a team mate makes contact with another player and she retreats 10 metres before accelerating forward again.

8 / 10

Estimate the displacement shown on this velocity-time graph for a Y7 trying to find a classroom during their first week in secondary.

36 m

45 m

60 m

63 m

9 / 10

A scuba diver surfaces after a dive. She begins to swim towards the boat at a constant speed of 67 cms^-1 and due to a current in the water this takes her 70 seconds an an angle of 32°. Calculate the time taken if there was no current at the same speed.

40 s

47 s

59 s

67 s

10 / 10

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

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

The unit of resistance is the ohm. A correct alternative unit is:

VW^-2

WV^-2

V²W^-2

V²W^-1

3 / 10

Select a use for this circuit when the temperature fluctuates. Assume V_out is the location of external circuitry

A fan to switch on in warm temperatures.

Street lights to switch on in darkness.

Operate a heater in a reptile house.

A speaker that operates upon sunrise.

4 / 10

Select effect on V_out when the light intensity increases on this circuit.

V_out increases.

V_out decreases.

V_out remains constant.

5 / 10

Calculate the current at A₃ in the circuit shown.

0.55 A

1.37 A

1.43 A

1.5 A

6 / 10

The current at A₁ is 4 A and the current at A₂ is 1 A. Select the current at A₃.

1 A

2 A

3 A

4 A

7 / 10

A battery with internal resistance 0.4 Ω and an e.m.f. of 15 V powers a portable speaker with a resistance of 9 Ω. Calculate the voltage across the speaker when it is being used.

13.4 V

14.4 V

15.3 V

15.9 V

8 / 10

A cell of e.m.f. 3.0 V and internal resistance 0.3 Ω is connected in a series with an ammeter reading 0.25 A and a motorised hula girl who dances when the circuit is complete. Calculate the power supplied by the cell.

0.71 W

0.73 W

0.75 W

0.77 W

9 / 10

Which of these circuit symbols represents an LDR?

10 / 10

Which of these circuit symbols represents a thermistor?

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

A ball bearing of diameter 5.6 mm is dropped into a liquid which has a viscosity of 5.4 Pa s and a density of 1.38 kgL^-1. In the liquid, it reaches a terminal velocity of 0.023 ms^-1. Calculate the mass of the ball bearing. g=9.81 Nkg^-1

0.055 g

0.059 g

0.541 g

0.589 g

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 diagram is showing laminar flow?

4 / 10

A 4.2 g balloon is inflated with 1.8 g of air until it is 1.4x10^-3 m³ in volume. Calculate the density of the inflated balloon.

1.3 kgm^-3

3.0 kgm^-3

4.3 kgm^-3

8.4 kgm^-3

5 / 10

Which material on the graph above is the weakest?

6 / 10

A wire has a diameter of d and a when a force of F is applied, it breaks at σ. What would the value of σ be if the diameter was halved?

^F/₂

^4F/_A

^F/_2A

^AF/₂

7 / 10

A copper wire has a length of 25 cm and a force of 400 N is applied to the wire, which causes it to stretch to 28.9 cm. Calculate the elastic strain energy stored in the wire.

7.8 J

15.6 J

78 J

156 J

8 / 10

When plotting a force extension graph for the loading and unloading of a material, when would the unloading line not pass through the origin?

When the limit of proportionality has been passed.

When the elastic limit has been passed.

When a metallic material is used.

When synthetic material is used.

9 / 10

What is another term for tensile deformation?

Extension

The Limit of Proportionality

Compression

The Elastic Limit

10 / 10

Under a 4 N force, two identical springs, in parallel, stretch 130 mm. Calculate the spring constant for one of the springs.

7.7 Nm^-1

15.4 Nm^-1

30.7 Nm^-1

61.5 Nm^-1

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

What is meant by the threshold frequency for a metal?

The frequency of light required to cause electrons to eject from any metal at the speed of light.

The frequency of light required to cause electrons to eject from any metal.

The frequency of light required to cause electrons to eject from a specific metal at the speed of light.

The frequency of light required to cause electrons to eject from a specific metal.

2 / 10

Where is the brightest maxima located?

zero order

1st order

2nd order

nth order

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 lens has a focal length of 4.8 cm. Calculate the lens' power.

0.21 D

2 D

4.8 D

8.3 D

6 / 10

An small child's toy is 4 cm from a lens with focal length of 6 cm. How far away from the lens is the image formed?

0.67 cm

1.5 cm

2.4 cm

12 cm

7 / 10

In a fibre optic cable the core has a refractive index of 1.52 and it's cladding is 1.34. Calculate the critical angle at the boundary between the core and cladding of the cable.

0.02°

41.1°

44.7°

69.1°

8 / 10

What is the wavelength of the fifth harmonic of a stationary wave on a string of length 4m fixed at both ends?

0.67 m

0.8 m

1.25 m

1.6 m

9 / 10

Calculate the intensity of a wave of power 1.6 KW and falling on an area of 2.1×10⁴ m²?

0.131 Wm^-2

0.762 Wm^-2

0.076 Wm^-2

1.31 Wm^-2

10 / 10

Select the wave with the highest frequency.

Your score is

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