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Define light, critical and heavy damping in simple harmonic motion.

Damping reduces the amplitude of oscillation of a system over time. Critical damping reduces the amplitude of the oscillations to zero in the shortest possible time, returning the system to the equilibriu...

Answered by Oscar W. Physics tutor
15763 Views

Why do group 1 elements get more reactive as you go down the group?

The atoms are composed of a positive nucleus surrounded by negative electrons. In order to ionically bond, each group 1 element wants to lose its outer electron to whatever it is going to bond to, eg Cl. ...

Answered by Tutor598463 D. Chemistry tutor
2769 Views

Prove by contradiction that 2^(1/3) is an irrational number

Assume 2^(1/3) is rational, so can be written as p/q where p and q are integers with no common factors. p/q = 2^(1/3) (p^3)/(q^3) = 2 p^3 = 2q^3 Hence, p is even. Thus, p can be written as 2r, where r is ...

Answered by Oscar R. Maths tutor
10792 Views

Draw the graph of y=x^2-4x-21

We know that this is going to be a “U” shaped parabola as the graph is a positive x^2 graph. The y intercept is the point at which x=0. Substituting in 0 gives when x = 0, y = -21.Now we need the x interc...

Answered by Tutor598463 D. Maths tutor
3267 Views

Which verbs do I use être with in the perfect tense?

When you use the perfect tense, you use a form of either avoir or être with the past participle of the verb describing the main action. Most verbs use avoir, but some use être and these can be divided int...

Answered by Anna F. French tutor
1647 Views

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