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
53356 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
24570 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
3908 Views

Factorise x^2 + 3x +2

You want two numbers that multiply to give 2 and add to give 3. Looking at factors is always easiest, so start by listing pairs of numbers that multiply together to give 2. There are only two such pairs, 1x2...
CH
Answered by Chloe H. • Maths tutor
6424 Views

How do you form the imperfect tense?

With AR verbs, first take off the AR from your infinitive to get the stem of the verb, then add the imperfect endings as follows:Yo .....abaTú .....abasél/ella/usted .....abaNosotros ábamosVosotros abaisEllo...
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Answered by Tom P. • Spanish tutor
4354 Views