dimpho

This page lists questions and answers that were posted by visitors named dimpho.

Questions

The following questions were asked by visitors named dimpho.

A large number of hydrogen atoms have electrons to the n=4 state.How many possible spectral lines can appear in the emission spectrum as a result of the electron reaching the ground state(n1=1).Diagram all possible pathways for de excitation from nh=4 to...
11 years ago
2. A box that weighs 10.0 N is being dragged with constant velocity along a horizontal surface of the table by a rope that is at an angle ¥á of 45¨¬ with that surface. The tension in the rope is 5.0 N. What is the coefficient of friction?
11 years ago
a bag contains 10 marbles of which 2 are red and 8 are black.Bag B contains 12 marbles of which 4 are ed and 8 are black.A ball is drawn at random from each bag. 5.1 draw a probability tree diagram to show possible outcome
10 years ago
A motorist travels a certain distance x in five hours at an average speed of 90km/h.what average speed must she maintain to cover the distance in 4 hours?
10 years ago
the cost to travel in a local minibus is R2.50 for each trip and 50cent for each completed kilometre:what would a ticket cost for a journey of 24 kilometre (2):if nomthi paid R6.50 for her ticket how far did she travel
10 years ago
if Catherine gets 100 free minutes on her cellphone each month;how many free minutes will she have in 8 months 2:how many free minutes will she have in x months
10 years ago
expand and simplify:2(x+2)squared-(2x-1)(x+2) 2x(x-2)+5x(x÷3)-x(3x-1) (5x-3)(2xsquared+3x-3) solve for x:(x-2)squared+3x-2=(x+3)squared
10 years ago
if nomthi paid R6.50 HOW FAR DID SHE TRAVEL
10 years ago
factorise the following completely:axsquared-2ax-apx
10 years ago
facorise completely:4(a-3)-xsquared(a-3)
10 years ago
factorise completely:xsquared-4x-5
10 years ago
factorise completely:2ax-4bx-ay-2by
10 years ago
expand and simplify:2(x÷2)squared-(2x-1)(x+2)
10 years ago
2x(x-2)+5x(x÷3)-x(3x-1)
10 years ago
expand and simplify:(5x-3)(2xsquared+3x-3)
10 years ago
If the mine winch drum diameter is 6m calculate how far the counterweight will fit for each single rotation of the drum
6 years ago

Answers

The following answers were posted by visitors named dimpho.