### Average Potential Energy for Electron

Just some analysis/explanation please. (See attached file for full problem description).

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Just some analysis/explanation please. (See attached file for full problem description).

Find the coordinates x*,y* of the center of gravity of a mass of density f(x,y)=1 in a region R, where R is a triangle with vertices (0,0), (b,0), (b,h).

A centrifugal pump is run under test at 1500 rev/min and returns the following performance figures... The pump is required to transfer water from a lake to a reservoir with a water level... See attached file for full problem description

Consider the scalar field (pressure field) given by the function f(x,y)=9x2 + 4y2 Q: Find the isobars (curves of constant pressure) and sketch some of them. Complete problem in attached file...

See the attached file. a) What is the resistance of the wire? (see attachment for diagram and full questions) b) If a voltage of 1mV=10^-3volts is applied across the wire, what is the current (I) and current density (J) along the wire? c) Taking 1 electron per atom as conducting (we will justify later, why most of the C

In the attached problem, there is a solution to part a attached. Please solve part b completely. In an air conditioning system for a precision gauge laboratory, atmospheric air at 32 C, 101.3 kPa and 80% relative humidity is first chilled to 10 C to remove moisture.

The package slides down a ramp and contacts the spring at a velocity of 20 ft/s. The spring has a mass that can be considered negligible. The spring constant is 1800 lb/ft. How many inches does the spring compress in order to stop the package? (150 lb package) (See attached file for full problem description)

The following pulley system is released from rest. The acceleration in ft/sec2 of block B is what? See attached

Rod AB is rotating 4rad/s clockwise. The speed in m/s of the slider is what in m/s? (See attached file for full problem description)

A motor is running at 12 rpm and the switch is flipped and cuts the power. The rotor weighs 75 lbs. The radius of gyration of the rotor is 6``. The rotor experiences an average friction moment 6 lb/in. How many seconds does it take for the rotor to come to rest?

A circular cross sectional bar with a diameter of 3.25 inches is loaded with a uniform axial compressive load of 22,750 pounds. What is the compressive stress along a cross section of the bar? A. Cannot be determined because the length of the bar is unknown B. Over 10,000 psi C. Less than 1,000 psi D. Between 2,000 and 9

1. Why is it possible to consider the vertical and horizontal motion of a projectile independently of each other. 2. A mortar shell fired with an angle of elevation of 50 degrees ahs a range of 2.5 km. Neglecting air resistance determine: a. The time of flight. b. The shells initial velocity. c. The shells range and heig

A cylindrical steel beam is 2 inches diameter and 6 feet long. The modulus of elasticity is 30 x 1,000,000 psi. If the beam is subjected to a tensile force of 1000 lbs, what will be the resulting unit strain? A. 16,000 psi B. .002 ft-lbs/sq-in C. 0.000064 ft/ft D. .0000106 in/in

Two cars split onto seperate roads. One goes straight and the other peels ot the right. What is the acceleration of B with respect to A in mi/hr^2 at the point shown in the figure? --- (See attached file for full problem description)

A pulley system is released from rest. Find the acceleration of both of the weights on the pulleys. --- (See attached file for full problem description)

What value of x will maximize: r(x)=r^2*(ln(1/x)? x can take values between 1/4 and 1

A picture of the system has been attached. There is no friction between m and m1. How would you determine the coordinates to describe the system and the equations of motion?

The length of cast-iron pipe is to be 4200 ft., and the head causing flow is to be 12.6ft. After the pipe has been in service 5 years, it is expected to discharge water at a rate equal to 3.2 cfs. Using a Hazen-Williams Formula Chart in which C = 160 What is the diameter of the pipe? 16 in., 12 in., 14 in., 10 in. The head fl

Please show each step of your solution. When you use theorems, definitions, etc., please include in your answer. If there is anything unclear in the problem, let me know. Thank you. (See attached file for full problem description)

The two 10-Kg slender bars (10-m long each) are released from rest in the position shown. Assuming the floor to be smooth, determine the angular acceleration of the bar AB, right after release. See attached

A pendulum consists of a uniform 10-lb plate and a 3-lb slender rod, the whole system swinging around a pin at 0 as shown. At the instant shown (theta = 30) the pendulum has a counterlockwise angular velocity of 5 rad/s. Determine the pin reactions at 0. see attached

Bar ABCD is guided by two blocks at B and C moving in slots as shown. Block B moves downward at a constant speed of Vb = 10ft/s. Using the method of instantaneous center of zero velocity, determine (a) the angular velocity of the link, (b) the velocity of the block C at the instant when theta = 35 degrees, and (c) the angular ac

Water is the working fluid in an ideal Rankine cycle. Saturated vapor enters the turbine at 18 MPa. The condenser pressure is 6 kPa. How to determine the quality of the fluid at the turbine exit, and the heat transfer to the steam passing through the boiler in kJ per kg of steam flowing? The enthalpy of the steam entering the

Ever wonder if you can build a machine to heat up your house using the heat from the outside environment? Well you'll need to start with the heat pump concept. In this example, you'll learn how to determine the maximum theoretical coefficient of performance for a heat pump operating at steady state between a dwelling at 70 de

You have a box that contains 100 kmoles of dry air and 1 kmole of water vapor. The contents are at a pressure of 100 kPa. Someone says that they need to have the enthalpy of the mixture to be 63.8 kJ/kg dry air where 0 degrees Celsius is the reference temperature at which enthalpy is zero. Find the following: a.) The Specif

A vapor-compression heat pump system uses R-134a as the working fluid. The refrigerant enters the compressor at 0.24 Mpa, 0 degrees Celsius, with a volumetric flow rate of 0.6m^3/min. The compression process is adiabatic to 0.9 MPa, 60 degrees Celsius, and saturated liquid exits the condenser at 0.9 MPa. Find the following:

Water is the working fluid in an ideal Rankine cycle. Saturated vapor enters the turbine at 18 MPa. The condenser pressure is 6 kPa. How do I determine the quality of the fluid at the turbine exit, and the heat transfer to the steam passing through the boiler in kJ per kg of steam flowing. The enthalpy of the steam entering the

How do I determine the maximum theoretical coefficient of performance for a heat pump operating at steady state between a dwelling at 70 deg F and a pond at 40 deg F? For the dwelling, if heat transfer through the walls and roof is 6.5x10^5 Btu per day, how would I determine the minimum theoretical power, in hp, to drive a he

At steady state, a new power cycle is claimed by its inventor to develop 6 horsepower for a heat addition rate of 400 Btu/min. If the cycle operates between reservoirs at 2400 and 1000 deg R, is the claim feasible?

Air enters a 0.6 m diameter fan at 16 deg C, 101 kPa, and is discharged at 18 deg C, 105 kPa, with a volumetric flow rate of 0.35 m^3/s. Assuming ideal gas behavior, how do I determine for steady-state operation, the mass flow rate of air, in kg/s? How do I figure the volumetric flow rate at the inlet, in m^3/s and the inlet ve