The captain of the ship views the top of a lighthouse at an angle of 60 degrees with the horizontal at an elevation of 6 meters above sea level. Five minutes later, the same captain of the ship views the top of the same lighthouse at an angle of 30 degrees with the horizontal. Determine the speed of the ship if the lighthouse is known to be 50 meters above sea level.
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Scalar and vector quantities give magnitude, and that makes them similar. The difference is that the vector quantity gives direction as well as magnitude.
Hope this helps!
In solving ideal gas law problems with a formula of PV=nRT
P = pressure
V = volume
n = amount of gas in moles
T = kelvin temperature
R = is constant and its value is depending on the unit of pressure given.
When the unit of pressure given is atm, the R = 0.0821 L.atm / mol.K
Here are the value of R depending of the unit of pressure:
Unit kPa = 8.31 L.kPa/K.mol
Unit mmHg = 62.4 L.mmHg/K.mol
Unit atm = 0.0821 L.atm / mol.K
Hope it helps...=)