Of the quarks of the Standard Model, up, down, top, strange, charm, bottom. Which quark was the first one to be discovered, and which one was most recently discovered?

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

What is special about a dc circuit ?

The magnitude of the amount of energy released by burning a fuel source, measured in energy per unit mass, is called its fuel value. note that the fuel value is the negative of the isobaric specific heat of combustion for the fuel. if all the energy obtained from burning 1.23 pounds of butane with a fuel value of 10.85 kcal/g is used to heat 128.0 kg of water at an initial temperature of 18.3 °c, what is the final temperature? note that 1 lb = 453.6 g.