physics
posted by lizzy .
A physicist, upon awaking one morning to find his stove out of order, decides to boil the water for his wife's coffee by shaking it in a thermos flask. Suppose that he uses 520 cm3 of tap water at 56oF, that the water falls 1.35 ft each shake, and that the physicist completes 27 shakes each minute. Neglecting any loss of thermal energy by the flask, how long must he shake the flask before the water boils?

Figure the energy in each shake (change ft to meters)
figure the energy the water needs to get to 100C.
divide the second by the first, then divide by 27. That is the time for shaking.
Respond to this Question
Similar Questions

Physics
I was having trouble with two different physics problems when studying for a test. Any help is appreciated. 1.) A 11.6kg block of ice has a temperature of 14.5 °C. The pressure is one atmosphere. The block absorbs 6.87 x 106 J of … 
Physics
I was having trouble with two different physics problems when studying for a test. Any help is appreciated. 1.) A 11.6kg block of ice has a temperature of 14.5 °C. The pressure is one atmosphere. The block absorbs 6.87 x 106 J of … 
Physics
5) An insulated Thermos contains 190 cm3 of hot coffee at 79.0°C. You put in a 11.0 g ice cube at its melting point to cool the coffee. By how many degrees (in Celsius) has your coffee cooled once the ice has melted and equilibrium … 
physics
An insulated Thermos contains 140 cm3 of hot coffee at 89.0°C. You put in a 11.0 g ice cube at its melting point to cool the coffee. By how many degrees (in Celsius) has your coffee cooled once the ice has melted and equilibrium is … 
physics
An insulated Thermos contains 140 cm3 of hot coffee at 89.0°C. You put in a 11.0 g ice cube at its melting point to cool the coffee. By how many degrees (in Celsius) has your coffee cooled once the ice has melted and equilibrium is … 
Physics
A thermos contains 150cm3 of coffee at 85° C. To cool the coffee, you drop two 10g ice cubes into the thermos. The ice cubes are initially at 0° C and melt completely. What is the final temperature of the coffee? 
Physics
A pot containing 2 liters of 5 celsius water is putt on a stove that is 1500 watts. Now the stove is on. How long time will it take for all of the water to boil from the pot? 
PHYSICS
A thermos contains 152 cm3 of coffee at 93.8 °C. To cool the coffee, you drop two 11.6g ice cubes into the thermos. The ice cubes are initially at 0 °C and melt completely. What is the final temperature of the coffee in degrees … 
physics
A thermos contains 147 cm3 of coffee at 95.0 °C. To cool the coffee, you drop two 12.4g ice cubes into the thermos. The ice cubes are initially at 0 °C and melt completely. What is the final temperature of the coffee in degrees … 
Physics
A thermos bottle contains 250 g of coffee at 88 0C. You then decide to add 27 g of milk at 5 0C. What is the equilibrium temperature of the mixture?