Search our library of homework questions

Top answers

All subjects

All levels

Why is a water molecule non-linear?

Valence Shell Electron Pair Repulsion Theory (VSEPR) states that lone pairs repel other lone pairs more so than they do bonded pairs. In water, the oxygen atom has two lone pairs. These two lone pairs rep...

Answered by Harry M. • Chemistry tutor

18966 Views

Explain one possible effect on the equilibrium market price of an increase in production costs for firms

An increase in production costs will result in an increase in the equilibrium price. This is because the increase in production cost means that firms will be less willing to supply and therefore there wil...

Answered by Leonie R. • Economics tutor

8989 Views

A linear sequence starts a + 2b, a +6b, a + 10b. The 2nd has a value of 8 and the 5th term has a value of 44. What are the values of a and b?

a + 6b = 8 5th term: a + 18b = 44
term 1: a + 6b = 8term 2: a + 18b = 44
term 2 - term 1: 12b = 36b = 36/12 = 3
a + 6b = 8a + 6(3) = 8a = 8-18 = -10

Answered by Leonie R. • Maths tutor

3038 Views

A person has a suitcase with wheels. The person pulls the suitcase with a horizontal force of 13 N for 110 m. Calculate the work done on the suitcase by the person (3 marks).

Work done = force x distance moved

Work done = 13 N x 110 m

Work done = 1430 J

Answered by Jasmine T. • Physics tutor

4515 Views

What is a world city?

A city that has very significant economic or financial and/or political influence on an international scale. Features: Major centre for finance, trade, businessMajor centre for culture, media Major centre...

Answered by Rose J. • Geography tutor

2712 Views