The diagram below shows a mercury manometer. Some dry gas is present in the closed space in limb A, while limb B is open. If
atmospheric pressure P, = 100 000 Nm, h = 20 mm and density of
mercury is 13 600 kgm”, determine pressure P, of the gas in mmHg/
(Take g = 10 Nkg-')
Gas
Pa
h
А
B
Mercury​

Which is not a source of noise pollution? a)airplanes b)acid rain c)machines d)cars

Selma made a diagram to compare convection and radiation. which label belongs in the area marked x? must involve temperature differences between substances or objects only occurs when molecules are in direct contact involves the movement of fluids based on density differences can occur where there is little or no matter

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.