You have a 4.7kg block of ice that is at -23 deg C. If you w…

You have a 4.7kg block of ice that is at -23 deg C. If you want to end up with 4.7kg of liquid water at 93 deg C, how much heat do you need to add to the ice? (Specific heat of liquid water = 4,186J/kg degC; Specific heat of Ice = 2090 J/kg degC; Latent heat of fusion for ice = 334,000J/kg)

Bonus:  Which theorist studied suicide to prove that sociolo…

Bonus:  Which theorist studied suicide to prove that sociology could be considered an academic discipline?  What was the objective behind the Stanford Prison Experiment? Give two ways that research ethics were violated in the Tuskegee Study?   Before we developed the need for written contractual agreements in the US, how did men seal a contract? (from the culture lecture) Explain why English is the most widely spoken language in the world?   

A 2-month-old girl presents for a well-child check.  She was…

A 2-month-old girl presents for a well-child check.  She was born to a 24-year-old G4P3 mother through normal spontaneous vaginal delivery. Her mother reports that the infant was in the breech position during the third trimester.  On physical exam, she has asymmetrical thigh creases in the groin and when the hip is externally rotated under stress a pop is felt. Which of the following is most appropriate intervention at this time?

A block of wood has these dimensions: length = 0.45m, width…

A block of wood has these dimensions: length = 0.45m, width = 0.25m, height = 0.15m. It has a density of 850kg/m^3. The block is floating in a tub of water. What is the mass of the block of wood? How much extra mass would have to placed on top of the block so that the top surface of the block is even with the surface of the water?