A DC motor:
The scientist responsible for the first production and detection of radio waves was:
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:
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:
The device below is most probably used to:
The table below contains data on the dwarf planet Eris.
Which of the following is a true statement about the operation of a transformer?
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:
Edison and Westinghouse were involved in competition to supply electricity to homes in the USA. Which of the following is a true statement?
During the early stages of the launch of a rocket, an astronaut typically experiences:
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:
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:
At the end of the Nineteenth Century, Physicists used this piece of equipment to demonstrate that cathode rays:
An electron in a particle accelerator is found to have a mass of 1.42x10-30 kg. The speed of the electron 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.