Vladimir

What does "Kc" mean?

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 te...

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) F...

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 dire...

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?

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?

The marginal function is define by C’(x) = 6x where C’(x) is the number of hundreds of dollars total cost of “x” hundred of unit of a certain commodity if the cost of 200 unit 2,000 dollars. Find (a) the total cost function (b) the overhead cost.

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.

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

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.

Thank you both.

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/mol) = 0.0043...