Monday
December 9, 2013

# Posts by emma

Total # Posts: 983

Math
Please help me understand this question, thanks! 10. Write the slope-intercept form of an equation of the line perpendicular to the line in Exercise 7 with a y-intercept of -3. 7. (4, -9), (-3, 2)

Physics
Three uniform thin rods, each of length L = 16 cm, form an inverted U. The vertical rods each have mass of 14 g; the horizontal rod has mass of 50 g. Where is the center of mass of the assembly (x, y)?

Physics Q
If a water heater has a capacity of 54.4 gallons and a 4910 W heating element, how much time is required to raise the temperature of the water from 19.8oC to 60.0oC? Assume that the heater is well insulated and no water is withdrawn from the tank during this time.

Physics Help!
An air bubble has a volume of 1.51 cm3 when it is released by a submarine 102 m below the surface of a lake. What is the volume of the bubble when it reaches the surface? Assume that the temperature of the air in the bubble remains constant during ascent.

PHYSICS!
0.115 kg of water at 81.0o C is poured into an insulated cup containing 0.220 kg of ice initally at 0o. Calculate the mass of liquid when the system reaches thermal equilibrium.

Physics
If a sonar echo takes 2.20 seconds to return from a whale, how faw away is the whale?

Math
Actually it's 12 because you have to divde 24 by 2 and it leaves you with 12.

Math
8 / 10 = x / 15 times 15 on each side =24

Literature
Please help me understand this, thanks. The way a topic is handled is called its treatment. Review the chart you completed as you read the speech. Then describe Obama's treatment of his family in the speech. By speech, it's referring to Out of Many, One.

Math Vocab
I am doing vocabulary for math and one of the words are negative correction. I search all over the place and didn't find a definition for that word. Help please.

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