D: +2/3 e
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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?
Which flavours of quark have charge +⅔ e?
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…
In radio communication, the bandwidth of an FM transmission is greater than the bandwidth of an AM transmission. Stat…