1State what is meant by the term longitudinal wave.
2
Microwaves and X-rays are both electromagnetic waves. Which of the following are properties shared by all electromagnetic waves in a vacuum?
3A beam of blue light has a wavelength of 4.69 x 10^-7 m in air. Given the speed of light in air is 3.00 x 10^8 m/s, calculate the frequency of this blue light.
4In the context of refraction and the semi-circular glass block experiment, describe what happens to the refracted ray when the angle of incidence is increased beyond the critical angle.
5A student plots a graph of extension (x) on the y-axis versus mass (M) on the x-axis for a spring system. If the relationship is x = (Mg/k) + R, what does the gradient of the graph represent?
6Based on a displacement-time graph for a car braking to a stop after a reaction period, which of the following statements are true?
7A heater is constructed from nichrome wire. If the heater has a power of 150 W and a current of 1.5 A, calculate its electrical resistance.
8Compare the number density of charge carriers (n) and the resistivity (rho) of a semiconductor like silicon to a metal like nichrome.
9Calculate the cost in pence of using a 150 W heater for 5.0 hours if the cost of 1 kWh of energy is 16p.
10In an electron diffraction experiment, how does the diffraction pattern change if the potential difference used to accelerate the electrons is increased?
