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That's a great question, and one that we, as non-native French speakers, ask quite a lot. The most important thing to remember about the imperfect tense is that it is not perfect. And it's not perfect bec...

PED stands for Price Elasticity of Demand. It refers to the percentage change of quantity demanded (Qd) of a product as a result of a change in price (P) of that product. It is calculated by dividing the ...

Newton's law of gravitation -> GPE = GMm/r - GMm/(r+h)GPE = GMm(1/r - 1/(r+h))GPE = GMm(h)/(r(r+h))r >> h -> GPE ~ (m)(GM/r^2)h = mgh

By 1871 Italy had come into being as a legally unified country. Disparate states and kingdoms were brought together under one unified legislative and executive body. This question examines the extent to w...

When the object is at rest on the platform it has no kinetic energy, but only potential energy. The potential energy is mgh where m is the mass of the object, g the gravitational acceleration and...