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What is global dimming and why does it occur?

Global dimming occurs due to light being reflected off the Earth's atmosphere and back into space.Light is reflected off the Earth's atmosphere due to the build up of Soot (C).Soot (C) is a product of incomp...
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Answered by Fazna R. • Chemistry tutor
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There is a Wheel of Fortune. The Wheel is numbered 1-15. Each section is equal in size. If the spinner lands on your number you win a prize. Ali has the number 6. What is the probability that he wins a prize? Give answer as percentage to 2 d.p

So because the wheel is split into equal segments. We can assume that if Harry has a single number then there is a 1/15 chance of Harry's number being chosen. To find the percentage you need to type 1 divide...
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Answered by Ama O. • Maths tutor
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Solve the second order differential equation d^2y/dx^2 - 4dy/dx + 5y = 15cos(x), given that when x = 0, y = 1 and when x = 0, dy/dx = 0

As we know, a general solution for a given differential equation is the complimentary solution + the particular solution/integral, this case is no different. To solve for the complimentary solution, form the...
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Describe the reflex arc in response to the hand touching a burning hot stove. Include the names and a description of location and function of all neurons involved. Bullet points are sufficient.

All bold text gives marking points Stimulus (burning hot stove) Receptor (thermoreceptor in skin) detects stimulus Sensory neurone - relays sensory information in the form of electrical impulses from recepto...
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Answered by Jonathan V. • Biology tutor
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LOWER TIER a) Multiply the following out: (x+3)(x-4). b) Factorise the following equation into two bracket form: x^2+7x+12

a) Use FOIL to multiply out these bracketsF: x 2 O: -4xI: +3xL: -12 x 2 -4x+3x-12 = x 2 -x-12b) Find two common numbers that ADD UP to give +7, and MULTIPLY TOGETHER to give 12 MULTIPLY TO 12 1 and 122 and 6...
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Answered by Jonathan V. • Maths tutor
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