A copper calorimeter of mass 150g was half filled with water of mass 300g at temperature 0°c.5g of ice at 0°c was added to the content, later some quantity of steam was passed into the mixture and temperature rise by 20°c. calculate the quantity of steam added Lv of steam=2•26×10^6 Joule per kilogram
S•H•C of copper=400 joule per Kilogram per kelvin
S•H•C of water=4200 joule per kilogram per kelvin
Lf of ice= 3•36×10^5 joule per kilogram

Asynthetic fiber used in manufacturing carpet has tensile strength that is normally distributed with mean 75.5 psi and standard deviation 3.5 psi. how is the standard deviation of the sample mean changed when the sample size is increased from n equals 8 to n equals 47

Which is the most accurate name for the ionic compound cas?

On a horizontal frictionless surface, a small block with mass 0.200 kg has a collision with a block of mass 0.400 kg. immediately after the collision, the 0.200 kg block is moving at 12.0 m/s in the direction 30° north of east and the 0.400 kg block is moving at 11.2 m/s in the direction 53.1° south of east. use coordinates where the +x-axis is east and the +y-axis is north.(a) what is the total kinetic energy of the two blocks after the collision (in ) what is the x-component of the total momentum of the two blocks after the collision? (indicate the direction with the sign of your ) what is the y-component of the total momentum of the two blocks after the collision? (indicate the direction with the sign of your answer.)