Q. Suppose the flame on a gas burner stove emits light just like a blackbody. The flame appears blue, emitting most of its light at a wavelength of 475 nanometers. What is the temperature of the flame?
Q. A boy whirls a stone using an r-m long string in a horizontal circle h m above the ground. The string broke, and the stone flies off horizontally and strike the ground x m away.The speed with which the stone flies off the circle is? The centripetal acceleration of the Stone while in circuler motion is?