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29/11/22

Homework to build your HSC Foundations

This week in the edzion email homework answers:

Biology

Genetic flow is a gradual change in:

a) the alleles of an individual due to mutation.

b) the geographical distribution of alleles

c) the genes of a population due to natural selection

d) the alleles of a population due to natural selection

b

Chemistry

How does the addition of heat affect a reversible reaction, with the forward reaction being exothermic?

a) It will decrease the rate of the forward reaction

b) It will decrease the rate of the reverse reaction

c) It will increase the rate of the reverse reaction more then the forward reaction

d) It will increase the rate of the forward reaction more then the reverse reaction

c

Physics

Which of the following are an example of maximizing torque

a) Using a long, narrow screw driver to unscrew a screw

b) Using a small stirring wheel in a sports car

c) Putting the door handle as far from the hinge as possible

d) None of the above options

c

Science Extension

Compare and contrast inductive and deductive reasoning, using examples. [6 marks]

Which interval gives the range of the function y = 5 + 2 cos 3 x ?

a) [2, 8 ]

b) [3, 7]

c) [4, 6]

d) [5, 9]

b

Mathematics Extension 1

For what value(s) of a are the vectors (2, 3a) and (-2, -1 – 5a) perpendicular?