A resultant force of 20 N has accelerated a body of mass 4.0 kg from rest, until the present moment, at which time its kinetic energy is 1800 J. If…

The addition of N0 as a catalyst to a mixture of S02 and 02 speeds up the following reaction: S02 + ½02 � S03The following reactions could be involved in…

Manx cats with two recessive alleles have a tail. Heterozygous Manx cats lack a tail. Individuals with both dominant alleles die before birth. Which answer shows the percentage of Manx…

A bag contains 8 blue and 2 red balls. Three balls are chosen at the same time at random from the bag. What is the probability that exactly two of…

Consider this graph. Which one of the following could the graph not represent if all quantities are in S.I. units? Answer: 23) D A – WrongWith the equation F =…

By using standard techniques to balance chemical equations and ensuring that the net charge is equal on both sides, find the correct value for ' e ' in the balanced…

Which of the following could be found in an adult liver cell? gene for amylase sex chromosomes starch Answer: 21) E The complete set of genes of an organism is…

A solid shape is made by joining three cubes together with the largest cube on the bottom and the smallest on the top. Where the faces of two cubes join,…

19 Two resistors of R1 ohms and R2 ohms are connected in series to a battery which has an e.m.f. of V. Which formula gives the power dissipated by resistor…

18 An impure sample of sodium hydroxide has a mass of 1.20 g. All the sodium hydroxide completely reacts with a minimum of 50.0 cm3 of 0.50 mol dm-3 hydrochloric…