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A pendulum has a frequency of 0.80 Hz, calculate the periodic time of the pendulum.

You need to use the equation that relates frequency and period; period = 1/frequency Then all you need to do is plug in the frequency to get the periodic time: period = 1/0.80 Hz = 1.25 s [NOTE: If you're co...
MV
Answered by Mia V. • Physics tutor
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Solve: 3(x - 2) = 21

First you look at BIDMAS, which determines the order in which functions are completed, [Brackets, Indices, Division, Multiplication, Addition, Subtraction], which says we deal with the brackets first, so we ...
MV
Answered by Mia V. • Maths tutor
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Explain why fluorine and chlorine are in the same group of the periodic table.

These elements are in the same group in the periodic table due to their electron configurations: fluorine: 2, 7 chlorine: 2, 8, 7 They both have 7 electrons in their outer shell, so therefore are both in gro...
MV
Answered by Mia V. • Chemistry tutor
47688 Views

Expand and simplify (3x+2) (x-5)

We expand this term by term. To make sure we expand every term, I use the beak method. To do this, draw 2 curves over the equation from the 3x to the x , and then a second curve from the x to the + 2 . Then ...
DS
Answered by Dominic S. • Maths tutor
20044 Views

What is the subjunctive and when do I use it in Spanish?

While different tenses describe when an action happened, different moods describe how the speaker feels about the action. There are three moods in Spanish: the indicative (which will be the tense you normall...
AJ
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