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The equation for finding the period of the wave is the reciprocal of the frequency
hence th eperiod T =1/f
substitute this into the wave speed equation
v=f x lambda
solve for...
The National Grid is how electricity is distributed from suppliers to consumers (commercial or private household). Power stations produce power in the region of Mega Watts (the order of millions of watts)...
The energy contained in a photon is given by the formula E = hf, where h is the Planck constant and f is the frequency of the photon. Since h = 4.110−15 eVs, f = E/h = 1.0103<...
First, we change the units of the datas:
v=120 km/h = 120 km/h x 1 h / 3600 s x 1000 m /1 km = 33.333 m / s
d=15 mm = 15x10-3 m
Using the formula of the angular velocity: w...
Formally speaking, the definition required in an exam would be that the second law of thermodynamics states that the entropy of an isolated system never decreases. The second law was conceived with the co...
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