Saturday
December 7, 2013

Total # Posts: 271

Physics
Some hydrogen occupies 120 ft at 60.0°F. Find the temperature when its volume is 132ft^3 if the pressure remains constant.

math
a jar contains 27 blue blocks 18 red blocks 12 orange blocks and 43 green blocks You put your hand in the jar and without looking pull out a block. About what fraction on the time would you expect to get a red block?

Physics
How many kcal of heat are required to vaporize 25.0kg of water at 100°C?

Physics
Find the increase in Volume of 50.0L of acetone when heated from 40.0°C to 75.5°C.

Physics
How many Btu of heat must be added to 900lbs of steel to raise its temperature from 20.0°F to 500°F? Specific heat of steel .115Btu/lb°F

Physics
A Brass rod 50.0 cm long expands 0.0734 cm when heated. Find the temperature change.

Physics
A 100 kg steam boiler is made of steel and contains 200 kg of water at 5.00°C. How much heat is required to raise the temperature of both the boiler and water to 100°C? The specific heat of Steel is 0.115kcal/kg°C. The specific heat of Water is 1.00kcal/kg°C

math
if you have a piece of string 11 ft. long and you cut it into 15 equal pieces how long will each piece be?

Physics
A ball is thrown horizontally from the top of a building 21.6 m high. The ball strikes the ground at a point 123 m from the base of the building. Find the x component of its velocity just before it strikes the ground. Find the y component of its velocity just before it strikes...

Math
Pamela and David walk on the same track. It takes Pamela 9 minutes and David 6 minutes to walk one lap. If they start walking at the same time, how many laps will each have walked when they cross the starting point together for the first time?

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