A wire is designed to ensure that its strain does not exceed 4.0 × 10–4when a force of 8.0kN is applied. The Young modulus of the metal of the wire is 2.1 × 1011Pa. It may be assumed that the wire obeys Hooke’s law. For a force of 8.0kN, calculate, for the wire:a)the maximum stress, (15%)b)the minimum cross-sectional area. (15%

answer: 2×10^-2kg

explanation: density= mass per volume

vol=mass/density

converting to s.i units we have;

3÷1000kg = 0.003

1.5÷100m = 0.15

0.003/0.15 = 0.02kg

float.

archimedes' principle

denser than water sinks in water.

denser than mercury would sink in it

the following is queen elizabeth’s purposes:

- to encourage the parliament that the technique of picking successors to the seat based merely on birthright needs to be reviewed.

- (not) to convince the parliament that her kid should not be measured as a likely choice for heir to the english power.

- to persuade the parliament that merely since she has a child does not assure that the kid will be a capable leader.

- to sway the parliament how shattering it could be if they proceeded discourteously concerning her or her child.