D: up to down
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State and explain whether a neutron is a fundamental particle.
The nuclei of common isotopes of hydrogen, helium, lithium and beryllium are shown. Which nucleus contains equal numb…
A positively charged meson consists of a quark and an antiquark. What could be the quark and antiquark?
4 Piezo-electric transducers are used for the generation of ultrasonic waves. (a) State one other use, apart from in …
5 A geostationary satellite orbits the Earth with a period of 24 hours. (a) State (i) the direction of the orbit abou…
A gravitational field may be represented by lines of gravitational force. State what is meant by a line of gravitatio…