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50.0 g of superheated steam at 375 0C flows into a container holding 725 g of water at 20.0 0C.  Assuming no energy was lost, what was the equilibrium temperature of the mixture? (LV)water = 539 cal/g, csteam = 0.363 ca/g 0C

A rock is suspended from a scale reads 20.0 N. A beaker of water is raised up so the rock is totally submerged in the water. The scale now reads 12.5 N. What is the density of the rock?

p1.(1).pngFig. 15-2 shows the displacement of a wave at a given position as a function of time and the displacement of the same wave at a given time as a function of position. Determine the speed of the wave.

As a rock sinks deeper and deeper into water of constant density, what happens to the buoyant force on it?

A 50 mL L air bubble escapes from a fissure at the bottom of the sea where the pressure is 15 atm and the temperature is 5.0 0C.  What is the volume of the air bubble at the surface where the temperature is 30.0 0C?

2. Describing personalities. Use each of the following adjectives to describe someone you may know. Justify your answer and use a COMPLETE sentence. Your sentence must prove you know the meaning of the word. (15 points. 3 points each answer) ejemplo: codicioso/a/e Answer: Mi prima Susana es muy codiciosa porque no es generosa y no comparte nada con sus amigos y su familia.   Adjectives you must use: mimado/a/e exitoso/a/e puntual parrandero/a/e torpe   En caso de que los necesiten (copiar y pegar): á  é  í  ó  ú  Á É Í Ó Ú    ñ  ¿ ?  ¡  !

30.0 calories is equal to how many joules of energy?

A gas absorbs 375 J of heat and expands performing 450 J of work.  What was the change in internal energy of the gas?

How much energy does it take to heat 4.0 moles of a monoatomic ideal gas from 20.0 0C to 100 0C at constant pressure? 

How much energy does it take to heat 4.0 moles of a monoatomic ideal gas from 20.0 0C to 100 0C at constant volume?