B: upthrust
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An object is fully submerged in a liquid. A student determines the ratio upthrust acting on the object weight of th…
Forces of 3 N, 4 N and 5 N act at one point on an object. The angles at which the forces act can vary. What is the va…
An object, immersed in a liquid in a tank, experiences an upthrust. What is the physical reason for this upthrust?
5 (a) State two advantages of the transmission of data in digital form, rather than analogue form. (b) Optic fibres …
11 Electrons are accelerated through a potential difference of 100kV. They are then incident on a metal target, they …
12 (a) Explain what is meant by the binding energy of a nucleus. (b) The following nuclear reaction takes place: ²³⁵…