Saturday
July 26, 2014

Posts by Lyra


Total # Posts: 17

Science
What should be the focal length of a double concave length 60 that an object placed 25 cm from it will produce 3/4 times large as the object?

Physics
Two protons, an infinite distance apart are brought together to a separation of 1 nm. What is the initial potential energy of the system?

Physics
The figure shows portions of two large, parallel, non-conducting sheets, each with a fixed uniform charge on one side. The magnitudes of the surface charge densities are σ(+) = 4 μC/m2 for the positively charged sheet and σ(-) = 10 μC/m2 for the negatively ...

Physics
Consider hydrogen gas, H2, at 24.3°C. What percentage of hydrogen molecules have a speed within 1.00 m/s of the most probable speed?

Physics
Two equal-volume compartments of a box are joined by a thin wall as shown in the figure. The left compartment is filled with 0.050 mole of helium gas at 403 K, and the right compartment contains 0.025 mole of helium gas at 213 K. The right compartment also has a piston to whic...

Physics
A copper sheet of thickness 2.49 mm is bonded to a steel sheet of thickness 1.51 mm. The outside surface of the copper sheet is held at a temperature of 100.0°C and the steel sheet at 24.1°C. a) Determine the temperature (in °C) of the copper-steel interface. b) Ho...

Physics
Two copper cylinders, immersed in a water tank at 46.3°C contain helium and nitrogen, respectively. The helium-filled cylinder has a volume twice as large as the nitrogen-filled cylinder. a) Calculate the average kinetic energy of a helium molecule at 46.3°C. b) Calcul...

Physics
But the question requires a number answer. What should I do for that?

Physics
A 2.2 kg otter starts from rest at the top of a muddy incline 93.9 cm long and slides down to the bottom in 0.60 s. What net external force acts on the otter along the incline? Does anyone know how to do this?

Physics
Two blocks (M1 = 2.57 kg and M2 = 6.71 kg) are in contact on a frictionless, horizontal tabletop. An external force, $\vec{F}$, is applied to block 1, and the two blocks are moving with a constant acceleration of 2.59 m/s2. What is the contact force between the blocks? What is...

business law
What type of case was silkwood v. kerr-mcgree?

business law
What was the verdict and judgment of the Silkwood v. Kerr-McGree case?

social studies
Thanks

social studies
what did thomas jefferson and benedict arnold have to do with the Revolutionary War?

English
The Great Gatsby-Why doesn't Daisy stop the car for Myrtle? I don't know why she didn't stop. Thanks

Science
We are currently studying water. My teacher said there is a difference between clean and pure water. I forget which is which, though. Would you be able to explain? Thank you!

English
need to write a paper arguing something with a specific purpose, and the paper needs to be directly toward someone I know. I was thinking of writing it to my friend about video games, but I'm having trouble thinking about an overall purpose for that paper. Are there any o...

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