An ideal gas undergoes two processes in a piston-cylinder device as follows: 1-2 Polytropic compression from T1 and P1 with a polytropic exponent n and a compression ratio of r=V1/V2. 2-3 Constant pressure expansion at P3=P2 until V3=V1. (a) Sketch the processes on a single P−v diagram. (b) Obtain an expression for the ratio of the compression-to-expansion work as a function of n and r. (c) Find the value of this ratio for values of n = 1.4 and r = 6.

Ametal ball with a mass of 0.028 kg is dropped from rest at a height of 1.0 meters above the ground. assuming the energy in the ball is conserved, how much kinetic energy will the ball have when it is 0.5 meters above the ground?

Give your knowledge of these things in your paper, you will compare and contrast analog and digital signals to determine which is more reliable for encoding and transmitting information. you’ll compare these features: signal shape numerical values for signal measurements amount of data that can be transmitted energy requirements privacy and security (ability of the signal to be encoded in a secret code) clarity of signal in the space provided, write down what you already know about any of these features. if you’re not sure, write down questions you might have about the features.

How will the system respond to a temperature increase?