Search our library of homework questions

Top answers

All subjects

All levels

How can I use the normal distribution table to find probabilities other than P(z<Z)?

The normal distribution tables show, for a given Z value, the probability that the random variable z takes a value less than Z or P(z<Z). This is also the area under the normal distribution curve up to...

Answered by Holi A. • Maths tutor

4099 Views

I am finding it hard to come up with idea's during my speaking exam. How can I make the conversation flow better?

This is a problem many people deal with, so you are not alone. During oral exams, we can feel so under pressure that our minds go blank and we forget everything we learnt. There are several ways to overc...

Answered by Lucie G. • French tutor

1961 Views

What's the difference between the 'lock and key' and 'induced fit' models for enzymes?

The lock and key hypothesis suggests that the enzyme has a fixed shape/structure and the substrate has to fit into this exactly for catalysis to occur. The induced fit hypothesis is different in that it s...

Answered by Harriet W. • Biology tutor

10044 Views

What steps occur during glycolysis?

Glycolysis is a metabolic process that takes place in the cytoplasm of a cell and occurs in both aerobic and anaerobic respiration pathways. One six-carbon compound is converted into two three-day on mol...

Answered by Isabelle S. • Biology tutor

10680 Views

Using Newton's law of universal gravitation, show that T^2 is proportional to r^3 (where T is the orbital period of a planet around a star, and r is the distance between them).

(Lets consider a simple planetary system composed of a planet orbiting a star. the gravitational force between the two is given by F=(GMm)/(r²). Assuming the planet also moves in a circular orb...

Answered by Karanvir S. • Physics tutor

28641 Views