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2013 Physics – Sydney Grammar Trial ( Practise Mode Multiple Choice )

Which of the following is a true statement about the operation of a transformer?

Below, which shows an electron travelling to the right between a pair of charged parallel metal plates.If it was desired for the electrons to be undeflected using a magnetic field in addition to the electric field above, then the direction of the magnetic field would need to be:

At the end of the Nineteenth Century, Physicists used this piece of equipment to demonstrate that cathode rays:

Wikipedia uses the following phrase: “the use of the relative movement and gravity of a planet or other celestial body to alter the path and speed of a spacecraft, typically in order to save propellant, time, and expense.” to describe:

The table below contains data on the dwarf planet Eris.

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In the diagram of a cathode ray tube below, what is the function of the components labelled X?

A square coil of side length 0.5 m sitting in a perpendicular field, experiences a magnetic flux of 100 Wb. If both the magnetic field strength and the side length are doubled, the new magnetic flux will be:

Edison and Westinghouse were involved in competition to supply electricity to homes in the USA. Which of the following is a true statement?

A transformer designed to convert Australian domestic voltage (240 V AC) to a voltage compatible in the USA (120 V AC) has 200 turns in its primary coil. What is the number of turns in its secondary coil?

Below, which shows a projectile launched at an angle of 30° above a horizontal surface at a speed of 27.0 ms^-1.The horizontal component of the initial velocity of the projectile is:

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An electron in a particle accelerator is found to have a mass of 1.42x10-30 kg. The speed of the electron is:

A DC motor:

Below, which shows a projectile launched at an angle of 30° above a horizontal surface at a speed of 27.0 ms^-1.The horizontal range of the projectile is:

A satellite of mass 1500 kg is orbiting a planet at an orbital radius of 2.6x107 m. It experiences a centripetal force of 4.7x103 N. The speed of the satellite is:

Below, which shows an electron travelling to the right between a pair of charged parallel metal plates.If the voltage between the plates is 100V and their separation is 0.10 m then the magnitude of the force on an electron fired between the plates is:

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The diagram below shows a current carrying wire inclined at 30° to a magnetic field. The force that the wire experiences as a result of its interaction with the field is 1.2 N. The length of the wire in the field is:

The following diagram shows a single loop of wire in a magnetic field. The initial strength of the magnetic field is 1.5T and it is directed into the page. A galvanometer is connected to the loop to measure any current that flows in it.

During the early stages of the launch of a rocket, an astronaut typically experiences:

The device below is most probably used to:

The scientist responsible for the first production and detection of radio waves was:

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