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If fusing hydrogen nuclei together puts them into a lower energy state, and matter always wants to be in a lower energy state, then why hasn't all the hydrogen in the universe already done this?

We first need to look at why fusion of hydrogen nuclei results in a lower energy state. On the face of it, hydrogen nuclei are just protons, which all carry an equal positive electric charge. This means they...
CC
Answered by Callum C. • Physics tutor
2256 Views

How do I use the chain rule for differentiation?

Let’s say we’re given the equation y=(2x-6)^4we would know how to differentiate x^4, therefore we can take the substitution u=2x-6 to give us the equation y=u^4we then differentiate this equation (dy/du) to ...
NA
Answered by Natasha A. • Maths tutor
3873 Views

A box is at rest on a slope with an angle ϴ. Find an expression for the static friction coefficient, μ, of the box.

Begin by drawing a diagram with all the vectors that act on the box. This should include the normal vector (N), the weight of the box (G), and the static friction force (F s ). Write down the equation for th...
OL
Answered by Oliver L. • Physics tutor
4943 Views

H(x)=(x^3)*(e^x) what is H'(x)

Using the product rule H(X) = f(x)*g(x) and H'(X) = f'(x)*g(x) + f(x)*g'(x) Where, in this case f(x) = x 3 and g(x) = e x We can easily determine the derivative of the above function.f'(x) = 3x 2 and g'(x) =...
AF
Answered by Antonio F. • Maths tutor
2073 Views

How does an increase in government expenditure affect Real GDP in the short-run?

Government Expenditure is an injection into the circular flow of income and can be represented in an Aggregate Demand/Aggregate Supply Diagram as an increase in aggregate demand. (Shows on diagram shift in a...
AF
Answered by Antonio F. • Economics tutor
4177 Views