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Live wires are dangerous because they carry current to the appliance they're connected to, at very high voltages. This means the wire has a high potenti...
This question is best solved using conservation of energy, since it is stated that friction and drag (non-conservative forces) can be ignored.When the ball is released at the top of the slope, its initial...
First, let's define what the ionisation energy is. The ionisation energy is the minimum amount of energy required to remove an electron from the ground state of an atom. That means, if we give an...
It is helpful to break down questions and draw a diagram. Here we know we have a ball that is being dropped, so it will initially be stationary. Gravity will cause it to accelerate towards the ground at 9...
a) A vector quantity is a quantity with both magnitude and direction. (opposite would be a "scalar quantity")
b) examples could include acceleration, weight, displacement, velocity etc.<...
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