Top answers

Why does resistance increase with temperature?

So, when an electrical charge passes through a resistor, some of that electrical energy is transferred into heat, increasing the temperature. This extra energy causes the particles in the resistor to vibrate...
FF
Answered by Fergus F. • Physics tutor
53381 Views

What are emergent properties?

Multicellular organisms show emergent properties; these are properties that exist due to many different components working together. For example, your lungs work and help you breathe due to all of the cells ...
HA
Answered by Helen A. • Biology tutor
24582 Views

How do we form the present tense endings for regular 'er', 'ar' and 'ir' verbs?

The present tense is used to describe actions that are happening in the present, and is the most commonly used tense in Spanish To form it, first you must remove the infinitive endings of the verb - er, ar a...
CA
Answered by Charlie A. • Spanish tutor
3915 Views

When do you use the Past Perfect (das Plusquamperfekt) and how to you construct it?

The Past Perfect is used to describe events that happened before another event in the past. It is constructed like the present perfect tense, except that "haben" or "sein" is in its simpl...
MS
Answered by Marie S. • German tutor
3562 Views

Differentiate y^3 + 3y^2 + 5

When you differentiate, you multiply by the old power and decrease the power by 1. If the expression has a constant in it, this differentiates to 0. So the answer is 3y^(3-1) + (3x2)y^(2-1) + 0 = 3y^2 +6y
CH
Answered by Chloe H. • Maths tutor
4902 Views