Physics Answers

A gas on a piston cylinder has a constant pressure of 10 psig vacuum. The

piston undergoes expansion which makes the volume of the gas from 0.05 m3

to 0.10 m3. Calculate the non-flow work in kJ

Derive schrodinger wave equation in its time dependent form

A point particle of charge 2.5nC and mass 3.25x10^-3 kg is in a uniform electric field directed to tje right .It is released from rest and moves to the right.After it has traveled 12.0cm,its speed is 25 m/s. Find the

a) work done on the partcle

b) change in tje electric potential energy of the particle and

c) magnitude of the electric field.

Calculate the electric flux for each of the closed surfaces a,b,c and d.

Find the flux through the top,left,and right side of a cube of side 0.5 m when placed in a horizontal uniform electric field of 8.0N/C directed to the right.

 If 10 kg/min of air are compressed isothermally from P1=96kPa and V1=7.65m^3/min to P3=620kPa, find the work change of entropy and the heat for: a) nonflow process and b) steady flow process with v1=15m/s and v2=60m/s.

f 10 kg/min of air are compressed isothermally from P1=96kPa. Find the work change entropy and the heat for

(A) non flow process with v1=15m/s and v2=60m/s

Three pounds of perfect gas with R=38 ft.lb/lb.R and k= 1.667 have 300 Btu of heat added during a reversible nonflow constant pressure change of state. The initial temperature is 100 °F. Determine the

(A) final temperature

(B) change in heat ∆H

(C) W

(D) ∆U

(E) ∆S

A cylindrical drum 2-ft diameter and 4ft height is filled with fluid whose density is 40lb/ft^3.

Determine

(A) the total volume of

(B) its total mass in pounds and slugs

(C) its specific volume and

(D) its specific weight where g=31.90 fps^2

15 cubic ft of air at 300 psia and 420°F at constant volume. What are

(a) the final pressure

(b) the work

(c) the change of internal energy

(d) the transferred heat

(e) the change of enthalpy and

(f) the change entropy?