Top answers

All subjects
All levels

How do you calculate efficiency?

The efficiency is calculated using the equation:
((Total useful output energy)/(Total input energy)) *100
We are essentially trying to calculate what percentage of the input energy is converted...

RM
Answered by Rachel M. Physics tutor
1977 Views

Calculate 27^(-3/2)

The question asks you to calculate 27-3/2.
Due to the presence of the negative sign, 27-3/2 is the same as 1/273/2.
The fractional power is a little more tricky...

RM
Answered by Rachel M. Maths tutor
3590 Views

Expand the following expression: (2x+3)(x+1)

In order to answer this question, we will follow the FOIL procedure. First, Outter, Inner, Last. Using the 'F' we will multiply the first 2 numbers of each bracket. In most cases, these 2 variables will h...

NH
Answered by Namrata H. Maths tutor
3694 Views

Solve simultaneously 2x+3y=8, 3x+2y=7 to calculate values of x and y.

First of all, we must multiply each equation by a suitable number in order to get the same leading coefficient. In simple terms, we must make the coefficient of the x or the y in...

VL
Answered by Vasant L. Maths tutor
5963 Views

Explain the lock and key hypothesis of chemical reactions.

The lock and key hypothesis explains how each enzyme acts specifically on a certain substrate. The lock is the enzyme. The key is the substrate. The lock has a site where a specific subst...

CH
Answered by Charlotte H. Biology tutor
2531 Views

We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences