Search our library of homework questions

Top answers

All subjects

All levels

Describe the role of tRNA in the production of a protein

tRNA molecules transport a specific amino acid to a ribosome for translation of mRNA. A tRNA molecule carries an anti-codon (at the opposite end of the amino acid) that pairs wi...

Answered by Megan W. • Biology tutor

7675 Views

Find Dy/Dx of (x^2+4x)^3

So here we need to use the chain rule in order to differentiate the equation. To start you take the function inside the bracket x²+4x and differentiate it to Du/Dx= 2x + 4 this is known as u. d...

Answered by Sam O. • Maths tutor

3219 Views

Lily goes on a car journey. For the first 30 min. her average speed is 40 mph. She then stops for 15 min. She then completes the journey at an average speed of 60 mph. The total journey time is 1 h. What is her overall average speed?

average speed=total distance/time taken ; distance=speed x timeFor the first part of her motion the distance she travelled, d₁=40 x 1/2 (as 30 minutes represent half an hour), so d₁=...

Answered by Stefania-Alexandra J. • Maths tutor

7477 Views

How the 'Wizard of Oz' Film Influenced Fashion

The “The Wizard of Oz” has had a large influence on fashion, both in design and in photos. Just look at Vogue’s December 2005 photo shoot taken by famed photographer, Annie Leibovitz. It features actress ...

Answered by Emily B. • Design & Technology tutor

2922 Views

Describe energy transformations in a oscillating pendulum, which undergoes simple harmonic motion. How this implies the velocity at critical (lowest and highest) points?

Our object will have a combination of potential energy (due to it's position relative to the ground) and kinetic energy (due to it's velocity).Consider the potential energy first. It depends on the height...

Answered by Ksenija K. • Physics tutor

2219 Views