Physics Random Retrieval Y12

The diagram shows Harry and Dudley on a see-saw. Harry is sat 120 cm away from the pivot. How far away from the pivot must Dudley sit to balance with Harry?

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

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

Select the effect on V_out when the surrounding temperature decreases for circuit.

Calculate the total resistance of the circuit shown.

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.

Which material on the graph above is the strongest?

Diffraction is an example of light behaving as a __________.

How many significant figures are in 103000?

How many significant figures are in 1994?

What is 26.794 to 1 decimal places.

What is 0.0000176700 to 2 significant figures.

What is 4.9999 to 3 decimal places.

Which unit measures work?

Which unit measures electrical resistance?

What multiple of unit does micro (μ) have?

What multiple of unit does centi (c) have?

Identify the a control variable: How does bulb brightness vary with bulb type?

Select the graph that best represents the algebraic expression: y = mx^-1 + c

A student places an item onto a balance in order to obtain its mass. They record the mass as 12.54 g. What’s is their absolute uncertainty for the mass reading?

The diagram above shows a uniform rod of negligible mass. At which position on the rod is no moment exerted?

A crane lifts a Rolls-Royce Trent 1000 engine into place. The engine has a mass of 5,936 kg and is lifted vertically 10 m by the crane in 12 seconds. Calculate the power of the crane. g = 9.81 Nkg^-2.

Complete the sentence: "Frictional forces reduce _________ "

A ball bearing is dropped in various mediums with various densities. Select the graph that shows the ball bearing dropped in a vacuum.

These graphs show test results of four different parachute setups, A, B, C and D for the Crew Dragon capsule (the landing portion of SpaceX's Dragon X). Select the parachute setup that has the largest air resistance for the Crew Dragon Capsule.

A strong woman lifts a car at an angle of 25° and horizontal component of force is 1300 N. Calculate vertical component of the lift.

A game of tug of war occurs between the English and Mathematics departments. The English department pull westerly with a force of 120.50 N and the Mathematics department pull easterly with a force of 108.25 N.

Calculate who wins and with what resultant force.

Neil Armstrong uses a catapult to horizontally shoot a rock at Buzz Aldrin on the Moon from a height of 2 m. He misses and it lands at Buzz's feed, 20 m from where it was fired.

Calculate the velocity the rock was fired at from the catapult. g_Moon = 1.62 ms^-2

An ill prepared student asks for a pen to write with in class, and the teacher grudgingly lends one out. Instead of walking over to the student, the teacher decides to throw them the pen. The teacher throws the pen at angle of 14° and a speed of 23 ms^-1. Sadly, the teacher misses and the pen continues on it's projected path out the window and takes 5 seconds to hit the car park outside.

Calculate the height different between the point of release and the car park floor. g_Earth = 9.81 ms^-2

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

The unit of power is the watt. A correct alternative unit is:

The unit of current is the ampere. A correct alternative unit is:

Select the effect on V_out when the surrounding temperature increases for circuit.

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

Your phone charger supplies a current of 2.1 A and has a power rating of 6 W. What is the potential difference?

Select the missing word: "The shallower the gradient of a I-V characteristic graph, the ____________ the resistance of the conductor.

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

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

Which of these circuit symbols represents a thermistor?

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

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

The ship, Queen Elizabeth 2, was a cruise ship from 1969-2008. She currently resides in Mina Rashid, Dubai as a floating hotel. When fully laden she held 70,327 tonnes and therefore displaces that weight of fluid when afloat. If the the density of seawater is 1024 kgm^-3, calculate the upthrust exerted on the ship when she was afloat fully laden. g = 9.81 NKg^-1

In order to calculate viscous drag (F), the equation above is used. What is a unit for η?

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

Which material on the graph above is the weakest?

A wire has a diameter of 0.5 mm and a breaking stress of the wire is 7.4x10¹⁰ Nm^-2. Calculate the mass that would break the wire. g = 9.81 ms^-2

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

Two springs attached in series extend by 5 cm when a load of F is applied to them. They have different constants of 76 Nm^-1 and 31 Nm^-1 respectively. Calculate the value of F.

At which point on the graph shown above is the elastic limit?

If the deformation of the material is plastic, the material __________.

The electromagnetic spectrum is an example a ____________.

Which sentence is true of ultrasound transducers?

What is the technique used in ultrasound scanning?

Which diagram represents a concave lens?

The refractive index of glass is 1.52, what speed does light travel through it?

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

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

Calculate the speed of a wave with a time period of 1x10^-3 s and a wavelength of 250 cm.

Select the wave with the smallest amplitude.

Select on the diagram which arrow represents the wavelength of the wave.