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 correct definition for the phrase "Dependent Variable"

what is changed in an investigation

what is kept the same

what is measured

2 / 10

This diagram shows the direction of force for four students pushing on a door at different distances from the hinge, d_pivot. Which student is applying the greatest moment?

3 / 10

A house attached to lots of balloons takes flight at 5.20 ms ^-1 and, due to a cross wind, at an angle of 56° from the horizontal. What would it's vertical speed be assuming there was no wind.

1.59 ms^-1

2.91 ms^-1

4.31 ms^-1

8.11 ms^-1

4 / 10

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

Scalar

Vector

5 / 10

A spring extends by 12 cm when a mass of 87 g is attached to it. Calculate the spring constant. g = 9.81 ms^-2

0.01 Nm^-1

0.10 Nm^-1

1.02 Nm^-1

10.24 Nm^-1

6 / 10

Electrons can show can show wave light properties.

TRUE

FALSE

7 / 10

The work functions of four metals are shown above. These metals are irradiated by incident light of 5.2x10¹⁴ Hz, which metals will emit electrons?

All four metals.

Potassium, Sodium and Zinc only.

Potassium only.

None of the metals.

8 / 10

Which condition is not necessary for the production of a stationary wave?

The waves are travelling in opposite directions.

An equal ratio of nodes to antinodes.

The waves are coherent.

The waves are in the same medium.

9 / 10

What is 40011 to 2 significant figures.

40000

40001

40010

40011

10 / 10

What is 0.0000176700 to 2 significant figures.

0.000017

0.0000177

0.000018

0.0000180

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 100?

2 / 10

What is 74235.44 to 3 significant figures.

74000

74000.000

74200

74200.000

3 / 10

How many significant figures are in 0.056?

4 / 10

What is 3.1415 to 1 significant figure.

3.1

3.10

3.14

5 / 10

What multiple of unit does giga (G) have?

1 x 10⁶

1 x 10⁹

1 x 10 ¹²

6 / 10

What is 300 μm in meters?

0.0003 m

0.003 m

0.03 m

7 / 10

Identify the independent variable: Investigating the absorption of gamma radiation by lead

Radiation Source

Thickness of Lead

Count rate of radiation

8 / 10

In the equation of a straight line, y = mx + c , select the letter that represents the gradient.

9 / 10

Select the missing word: _______ errors affect precision.

Random

Systematic

10 / 10

A ruler with an uncertainty of ± 0.5 mm measures the length of a Subway Footlong to be 292 mm, what is the uncertainty in the measurement.

± 0.50 mm

± 1.00 mm

± 2.00 mm

± 2.50 mm

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

Select the SI unit for Energy.

Js^-1

m kg s^-1

m²kg s^-2

m²kg s^-3

2 / 10

You're down the allotment and are carrying your 65 kg Nana in a 20kg wheelbarrow. Your Nana's and the wheelbarrow's weight acts 60 mm from the centre of the wheel. What force do you need to apply to the end of the handle, 1.2 m from the centre of the wheel, to move your Nana about? g = 9.81 ms^-2

9.8 N

31.9 N

41.7 N

50.3 N

3 / 10

The Soyuz (Russian: Сою́з) descent module, of mass 2900 kg, re-enters the atmosphere at an angle of 1.35° to the horizontal, and travels 4200 km until it reaches 10.7 km before deploying it's parachutes. Calculate the change in E_g from the point of atmospheric re-entry to parachute deployment.

2.5x10⁶ J

2.5x10⁹ J

1.2x10¹¹ J

1.2x10⁸ J

4 / 10

Which of the following quantities has the same unit as the rate of change of momentum?

energy

weight

work

acceleration

5 / 10

Select the best statement for Newton's 1st Law:

An object will remain at rest unless acted on by a resultant force.

An object will remain at rest or at a constant velocity unless acted on by a resultant force.

The rate of change in momentum of a body is directly proportional to the resultant force applied.

When two objects interact they will exert equal and opposite forces on each other.

6 / 10

The SI unit for a Newton is _______ .

kgs^-1

kgms^-1

kgms^-2

7 / 10

A Y7 drags behind them their cooking, PE kit and textbooks behind them with a force of 676 N and an angle of 30°. Calculate the vertical component of the force.

247 N

338 N

585 N

923 N

8 / 10

A bus is slowing down to stop at a bus stop. Select the graph which shows best describes it's motion.

9 / 10

A school decided to go paintballing for staff team building. The Head of Science aims her paintball gun horizontally 1.6 m above ground at the Headteacher, launching the paintball at 92 ms^-1. She hits him on his thigh, 90cm from the ground. Calculate the distance away the Headteacher was stood. g_Earth = 9.81 ms^-1

34.8 m

39.4 m

52.5 m

65.7 m

10 / 10

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

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 power is the watt. A correct alternative unit is:

VCs^-1

Ω²V^-2

V²Ω

V²Ω^-2

2 / 10

Calculate the current at A₁ in the circuit shown.

0.13 A

1.37 A

2.05 A

2.93 A

3 / 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

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

When the LHC is full operational in the summer months, it accounts for 115 MW of CERN's 200 MW requirements. Calculate the total energy transferred over 28 days for the LHC.

2.78x10¹⁴ J

3.81x10¹⁴ J

4.84x10¹⁴ J

7.62x10¹⁴ J

6 / 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

7 / 10

The unit for resistance is Ohms, what is this in SI base units?

kg s^-2 A^-1

m^-2 kg^-1 s⁴ A²

m² kg s^-3 A^-1

m² kg s^-3 A^-2

8 / 10

Which of the following options is the unit for resistivity?

Ωm

Ω²

Ωm²

9 / 10

If the area (A) of a material was to doubled, what would the resistance be?

R/2

R²

10 / 10

Calculate the potential difference of a battery that has 230 J of energy and moves 120 C of charge.

0.52 V

1.92 V

2.76 V

27600 V

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

Which diagram is showing laminar flow?

3 / 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

4 / 10

Which material is the densest?

5 / 10

A copper wire of diameter 0.6 mm, X, is joined in series to the end of another copper wire of diameter 0.125 mm, Y. Both wires are 80 cm in length when no load is applied. A 15 N load is hung on the end of the wires as shown in the diagram below. If the Young's Modulus of copper is 128 GPa, calculate the extension for each wire.

ExtensionX = 0.3 mm, ExtensionY = 7.6 mm

ExtensionX = 0.4 mm, ExtensionY = 9.5 mm

ExtensionX = 1.4 mm, ExtensionY = 1.6 mm

ExtensionX = 2.3 mm, ExtensionY = 11.9 mm

6 / 10

When investigating Young's modulus, why should you use a long wire?

To help maintain social distancing.

To reduce the absolute uncertainty in your measurements.

To reduce the percentage uncertainty in your measurements.

To reduce random errors.

7 / 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

8 / 10

Which material on the graph above is the stiffest?

9 / 10

Select the graph with the correct labels.

10 / 10

A meteor traveling through space has a k = 4.2x10⁶ Nm^-1 and a force of 5x10⁸ N. Calculate the extension of the meteor.

8.4x10^-3 m

8.4 m

11.9 m

119.0 m

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

Electrons are accelerated through a potential difference of 230 V. Calculate their velocity.

3.68x10^-7 ms^-1

21 ms^-1

8.89x10⁷ ms^-1

7.91x10¹³ ms^-1

2 / 10

Select the missing phrase: "For an object to be resolved in the body, the ultrasound wavelength must be ________ the object."

Larger than

Smaller than

The same size as

Half the size of

3 / 10

What is the technique used in ultrasound scanning?

Sonar

Pulse-Echo

US-Reflection

Transducing

4 / 10

An image of a perfectly circular object of radius 25.8 cm is projected onto a screen. The object is also perfectly circular and has an area of 16.3 cm. Calculate the magnification on the lens.

1.58

5.24

32.6

128.9

5 / 10

Which lens causes light to diverge?

Convex

Concave

6 / 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

7 / 10

The image above shows two wave fronts before, during and after meeting. What is this an example of?

Constructive interference

Destructive interference

Stationary wave

8 / 10

Which wave is being described here: The motion of energy is along the same direction as the direction of travel.

Transverse Wave

Longitudinal Wave

9 / 10

Which wave is being described here: The motion of energy is perpendicular to the direction of travel.

Transverse Wave

Longitudinal Wave

10 / 10

Select the wave with the highest frequency.

Your score is

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