J (0) A copper can together with a stirrer of total heat capacity 60JK contains
200g of water at 10 °C. Dry steam at 100 °C is passed in while the water is
stirred until the whole reaches a temperature of 30 °C. Calculate the mass of
steam condensed. Specific heat capacity of water is 4,2001kg K and Specific
latent heat of vaporisation of water is 2,260,000 Jkg ​

Astudent is given an assignment to demonstrate diffraction. he takes a photograph of a straw in a glass of water. the straw appears bent at the water level. which best describes this example? a) this is a good example of diffraction. b) this is an example of dispersion and not diffraction. c) this is an example of refraction and not diffraction. d) this is an example of reflection and not diffraction.

2kg of refrigerant 134a undergoes a polytropic process in a piston-cylinder assembly from an initial state of saturated vapor at 2 bar to a final state of 12 bar, 80 degree c. a)determine the work for the process in kj. b)sketch the process on a p-v diagram.

Two pans of a balance are 24.1 cm apart. the fulcrum of the balance has been shifted 1.33 cm away from the center by a dishonest shopkeeper. by what percentage is the true weight of the goods being marked up by the shopkeeper? assume the balance has negligible mass. answer in units of %.