Search our library of homework questions

Top answers

All subjects

All levels

Describe two leadership styles?

Autocratic: An autocratic leader is a dictator. He/she refuses to listen to his/her employees and does not value their opinion. He can motivate employees by threats. Democratic: A democratic leader values...

Answered by Alannah D. • Business Studies tutor

1623 Views

At time t = 0, a particle is projected vertically upwards with speed u m s–1 from a point 10 m above the ground. At time T seconds, the particle hits the ground with speed 17.5 m s–1. Find the value of u and T and evaluate the model. (AS mechanics)

This is a classic suvat question that will most definately appear in the studnets exam without fail. To begin I would list all the values I have and notice that the ball being modelled as a particle denot...

Answered by • Maths tutor

7477 Views

How would you represent the decimal number 143 in 7 bit binary?

First look at the leftmost digit, which represents how many 128s are in the number. There is one 128 in 143, so we mark that as a 1. Then take the remainder of the value - in this case 143-128 = 15, and m...

Answered by Joel C. • Computing tutor

3029 Views

A quantity N is increasing with respect to time, t. It is increasing in such a way that N = ae^(bt) where a and b are constants. Given when t = 0, N = 20, and t = 8, N = 60, find the value: of a and b, and of dN/dt when t = 12

N = ae^bt When N = 20, t = 0. We can substitute this in.20 = ae^{b x 0} ...

Answered by Jack C. • Maths tutor

3519 Views

How would you use the following expression to approximate [(4-5x)/(1+2x)(2-x)] when x=5 (A2 pure)

So I cant really answer this question over text however, the method would be using partial fractions to split the two fractions into two, then using a binomial expansion, but the indicies will be negative...

Answered by • Maths tutor

3039 Views