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Why do some verbs take 'sein' in the past tense?

The verbs that take sein in the past tense are usually (there are some exceptions) verbs that indicate a change of state or movement. For example, fahren is referring to movement, so you'd say ich bin gefahr...
JS
Answered by Jack S. German tutor
3663 Views

How does sodium chloride (salt/grit) lower the freezing point of water?

Water is a highly ordered material. When something dissolves in water, some of these O-H bonds are broken. This requires heat energy. The water molecules can then form attractive interactions to solute ions ...
OO
7940 Views

How should I structure my history essay?

Structure is key to gaining top marks at A-Level History. First, it is very important that you have a strong, short introduction which sets out your line of argument and the key debate surrounding the questi...
TD
4540 Views

Work out the value of 2a^2 + b^3 when a = 5 and b = –3

It is best to approach this question in parts, then combine the parts to find your solution. This question may be split into parts, as follows: Firstly, if a = 5, then a 2 = 5 2 = 5 x 5 = 25. So a 2 = 25 Sec...
TD
Answered by Tutor51449 D. Maths tutor
14867 Views

Integrate x^2sin(x) between -pi and pi

It is possible to solve this question using integration by parts. However, we note that sin(x) is an odd function, meaning that sin(-x) = -sin(x). Thus x 2 sin(x) is also an odd function. This means that the...
HL
7894 Views