A mass 3kg at the temperature 850°c is quickly transferred into a lead calorimeter of negligible heat capacity containing water of mass 500g at 20°c. Evaluate the mass of that boils away given the specific heat capacity as 400JKg-1K-1 and specific heat of vaporization steam as 2.26 × 10^5kg.

An object weigh 40n in air ,weigh 20n when submerged in water,and 30n when submerged in a liquid of unknown liquid density.what is the density of unknown of liquid?

Which is an example of an exothermic process?

This chart shows characteristics of three different types of waves. which statement is best supported by the information in the chart? wave x and wave y are mechanical waves, and wave z is an electromagnetic wave. wave x and wave y are electromagnetic waves, and wave z is a mechanical wave. wave x and wave z are electromagnetic waves, and wave y is a mechanical wave. wave x and wave z are mechanical waves, and wave y is an electromagnetic wave.