A single sheet of aluminium foil is folded twice to produce a stack of four sheets. The total thickness of the stack of sheets is measured to be (0.80 ± 0.02)mm. This measurement is made using a digital caliper with a zero error of (–0.20 ± 0.02) mm. What is the percentage uncertainty in the calculated thickness of a single sheet?

A byte (b) comprises 8 bits. How many bits are there in 1 terabyte (1Tb)?

Which pair of quantities contains both a scalar and a vector?

A micrometer is used to measure the diameters of two cylinders. diameter of first cylinder = (12.78 ± 0.02) mm diamet…

A coil contains N turns of insulated copper wire wound on to a cylindrical iron core of diameter D. The copper wire h…

Which row describes the relative ionizing power and the relative penetration power per unit length in air of α-partic…

A nucleus of sodium-21, ²¹₁₁Na, decays to form a new nucleus containing 10 protons and 11 neutrons. Which leptons are…