Friday
May 6, 2016

Total # Posts: 13

mathematical literacy
Are there available degrees relating to comerce, that can be done with Maths Lit, and not Maths. Preferably at a good institute like uct, uj, ukzn, etc.
January 12, 2015

Chemistry
Supposing all the "gas" is water vapor. The source below gives the specific heat of water vapor and liquid water: (2.000 J/(g·°C) x ((0.07796 g) x (125 ºC - 100 ºC) = 3.898 J from cooling the vapor to 100 ºC (0.07796 g H2O) / (18.01532 g H2O...
March 10, 2014

PHysics
What is the total energy of a 15-kg mass attached to a spring oscillating horizontally with an amplitude of 20 cm and an angular frequency of 32 rad/s?
July 28, 2012

Physics
Thank you both.
July 20, 2012

Physics
I'm not too sure how to add the latent heat part in there, but I'll reread that section in my book and see if I can figure something out.
July 20, 2012

Physics
The specific heat of ice and water is given as 2.06 kJ/(kg K) and 4.19 kJ/(kg K) respectively.
July 20, 2012

Physics
The answers are 21.9 degree c and 14.2 degree c. I've tired figuring out a way to use the dE = Q - W equation to solve this problem, but it hasn't been working.
July 20, 2012

Physics
A 6-g ice cube at −8°C is dropped into 70 g of water at 31°C. (a) After enough time has passed to allow the ice cube and water to come into equilibrium, what is the temperature of the water? (b) If a second ice cube is added, what will the temperature be?
July 20, 2012

Physics
Suppose the slope of a beach underneath the ocean is 20 cm of dropoff for every 1.6 m of horizontal distance. A wave is moving inland, slowing down as it enters shallower water. What is its acceleration when it is 12 m from the shoreline? (Let the +x direction be towards the ...
July 13, 2012

Physics
A 0.51-kg mass is attached to a horizontal spring with k = 108 N/m. The mass slides across a frictionless surface. The spring is stretched 26 cm from equilibrium, and then the mass is released from rest. (a) Find the mechanical energy of the system. (b) Find the speed of the ...
June 2, 2012

Physics
Three identical blocks, A, B, and C, are on a horizontal frictionless table. The blocks are connected by strings of negligible mass, with block B between the other two blocks. If block C is pulled horizontally by a force of magnitude F = 28 N, find the tension in the string ...
May 29, 2012

physics
A crate of oranges slides down an inclined plane without friction. If it is released from rest and reaches a speed of 4.476 m/s after sliding a distance of 2.33 m, what is the angle of inclination of the plane with respect to the horizontal?
May 24, 2012

Chemistry
What does "Kc" mean?
April 6, 2008

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