Engineering

Is it safe to microwave c4

i have couple blocks of c4 and i need to microwave it to make it more ply-able so i can mold it-Yes it because the only to make c-4 go off is to use a detonator. C-4 is a plastic expolsive that is ver

How to reduce coefficient of of kinetic friction

It is a pulley system as seen here: http://www.physicsforums.com/showthread.php?t=261208 How can I reduce the coefficient of kinetic friction between the block and the surface? Is this answer right?

What related majors could students majoring in Communication Engineering pursue for a futher degree

I am a student who is majoring in communication engineering in the college, and now I want to pursue for a masters degree in the US. the problem is, there is so few communication engineering degree p

Examples of electromagnets

Need a few examples of electromagnets and why its an electromagnet, where u might find it, and how it works... Thanks and thanks for the other questions too!-Probably the best known example is the cra

A circuit with four 6-ohm resistors wired in series has 12 volts applied to it.

What current flows through this circuit? Answer is 500 mA I dont understand the conversions and steps of this book.-Hi Simply the book uses the formula of ohms law which states that the voltage acro

How do I find the amplitude of a circle

I am doing word problems and I am given that the diameter is 24 inches. How am I supposed to find the amplitude for a sinusoidal function? Is the amplitude the same as the radius 12 inches?-Yes. If th

How much current does the speaker draw? How much power does the speaker use

A 20 ohm speaker is connected in series with a 40 ohm resistor and a 9V DC source. How much current does the speaker draw? How much power does the speaker use? Please show me the math behind it, th

What are the forces acting on a floating balloon

The basic aerodynamic forces are lift, drag, thrust and weight. Weight is the force generated by the gravitational attraction of the Earth on an object. For a floating balloon, weight is a force whic

How do I increase the vcore to a 386/486 processor

Please read fully, before answering. Have already had two slows post useless answers. Id like to increase the voltage going to my 386 (because i am raising the clock speed at the same time, for overc

Uniform Distribution Question

I have been working at this one for a while and its time to enlist some help. The question is as follows. The scheduled commuting time on the Long Island Railroad from Glen Cove to New York City is

Determine the planar area moment of inertia of the area..

Determine the planar area moment of inertia of the area shown on the left with respect to its centroidal x-axis and centroidal y-axis http://imageshack.us/photo/my-images/850/newjv.jpg/ The answers a

Difficult MS Excel problem

OK I have a long column which has names and I want to add either a number sign (#) or some special character prior to and after the names. Lets assume the name is written as Roger Smith, I want to cha

Converting from battery powered to USB

Would I need to use anything like resistors or anything? I plan on removing the battery pack and soldering a USB cable instead. The item takes 3 AAA batteries. But I will have 4 of these going into

In computational fluid dynamics (CFD) what do the U, V, W stand for

I believe it has something to do with velocity.-They are the x-y-z components of the velocity vector.Check the diagrams to know which is which.

Can somebody explain the rotors on an enigma machine simply

Ive read the Wikipedia page for an enigma machine to try to figure out how rotors, work, but it was really confusing. Can somebody explain the rotors a little more simply? Thanks!-In old mechanical t