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Describe how standing waves are formed and explain why nodes and antinodes are formed.

Standing waves are produced from the superposition of 2 progressive waves with the same wavelength, travelling in opposite directions. The pattern consists of nodes and antinodes. Nodes are formed from destr...
MB
Answered by Moin B. • Physics tutor
9627 Views

How do you find the components of a vector?

Sometimes it is more useful for us to represent a vector in terms of other vectors added together. For example, we can split a vector into the vectors pointing in the direction of our axes, we call these sep...
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Answered by Andrew S. • Physics tutor
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An alpha particle is accelerated with 5MeV of kinetic energy towards the nucleus of a gold atom with atomic number 79. What is the distance of closest approach that is reached by the alpha particle?

45 femtometers to two significant figures
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Answered by Joshua M. • Physics tutor
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An object has a mass of 10kg and sits on a slope with an angle of elevation of 45 degrees. work out the reaction force of the object to the slope and the force acting down the slope. (3/4 marks)

step 1: find objects weight by doing 9.81x10= 98kg (2s.f.)step 2: draw a triangle of forces about the object including all information you know e.g. 45 degree angle step 3: force down the slope use the equat...
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Answered by Mikey J. • Physics tutor
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Two forces of 4N and 10N act on a body. Which of the following could not be the resultant magnitude? (14N, 7N, 6N, 3N)

My first thought when dealing with resultant forces is to try out the most common combinations: combined and opposite. In this case 10N + 4N = 14N and 10N - 4N = 6N. This tactic does rule out two of the answ...
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Answered by Aleksandr J. • Physics tutor
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