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a) 600N arrow down for weight, no air resistance arrow, acceleration = 10m/s^2
b) 600N arrow down, 300N arrow up for air resistance, acceleration = 5m/s^2 (Using F = ma)
c) 600N arrows up...
Atmospheric pressure is an expression for the force exerted on a surface (in this case the water surface) per unit area caused by air particle collisions on the surface. In a cup of water, there is a unif...
Heat transfer by conduction and convection works by particles colliding and transferring energy, as there are no particles in a vacuum heat transfer can only occur by radiation. This is because radiati...
All EM waves travel at the same speed in a vacuum.
To answer this we need to use the equation Q = MC(T1-T2)
We want to know what T2 is (ie the temperature after one hour).
So rearrange the equation to get T2 = T1 - Q/MC
No substitute ...
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