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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
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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
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Explain the Rule of Law doctrine.

1) Definition of the Doctrine The Rule of Law (ROL) is one of the three central doctrines of the English constitution, alongside the Separation of Powers and Parliamentary Sovereignty. It was first explained...
AJ
Answered by Arron J. • Law tutor
21561 Views

Complete the following nuclear equation p+ -----> n + ... + ...

This is a proton decaying into a neutron and two other subatomic particles. Here you have to consider various conservation laws, including: baryon number, lepton number and charge. (Energy and momentum are a...
RS
Answered by Ryan S. • Physics tutor
4201 Views

The potential difference in a circuit is 5V. There are two resistors connected in series of resistance 10 Ohms. Calculate the current I in the circuit.

Ohm's law states that V=IR ; where V is p.d., I is current and R is resistance. Firstly the two resistors are in series so the total resistance is just the sum of the two resistances. Therefore R = 10+10 = 2...
RS
Answered by Ryan S. • Physics tutor
5369 Views