Top answers

In a fluorescent tube, how are the atoms in the tube excited?

As there is a potential difference in the fluorescent tube. Electrons will flow from negative to the positive . These electrons collide with the orbital electrons in the atoms of the fluorescent tube. As the...
SW
Answered by Shaun W. • Physics tutor
5732 Views

Solve x^2-5*x+6=0

There are 2 methods we can use here. Method 1 - Factorisation If we can rewrite the equation so that it looks like (x+a)*(x+b)=0, where 'a' and 'b' are numbers, then we can easily find a solution. If one or ...
HD
Answered by Hannah D. • Maths tutor
8586 Views

what are the energy changes when a car rolls from the top of a hill to the bottom? Name two forces that would slow the acceleration of the car?

At first as the car is on the top of the hill, it has GRAVITATIONAL POTENTIAL ENERGY As the car rolls down the hill, GRAVITATIONAL POTENTIAL ENERGY changes to KINETIC ENERGY. Friction and Air resistance
SW
Answered by Shaun W. • Physics tutor
14047 Views

expand the brackets (x+5)(x+3) furthermore what are the two values of x

X 2 +3X+5X+15 Take the first X in the first bracket and multiply by every number or letter in the second bracket. Take the Second number in the first bracket and multiply by every number or letter in the sec...
SW
Answered by Shaun W. • Maths tutor
10660 Views

Find D when 8x^3-12x^2-2x+D is divided by 2x+1 when the remainder is -2

8x 3 -12x 2 -2x+D...(1) 2x+1...(2) Assume 2x+1=0 so x=-1/2 8x 3 -12x 2 -2x+D=-2... when divided by (2) substitute -1/2 into all X values rearrange to find D
SW
Answered by Shaun W. • Maths tutor
4702 Views