increase Definition and 866 Threads

Homework Statement By means of a hand pump, you inflate a tire from 0 psi to 35 psi (overpressure). The volume of the tire remains constant at 3.5 ft^3. How much work must you do on the air pump? Assume each stroke of the pump is an adiabatic process and that the air is initially at STP...

I don't get why the tension force should increase up to a point in a stretched metal wire as the wire is extended surely whatever attractive force exist within the wire (I am familiar with metallic bonding) should get less as you increase the average distance between the particles. I am very...

What processes, mechanisms or basic physics could experience an increase in efficiency best for world society?

Need help guys, not understanding this at all. Can anyone help me out? Two sides of a triangle and their included angle are changing with respect to time. The angle increases at the rate of 1 radian/sec, one side increases at the rate of 3ft/sec, and the other side decreases at the rate of...

1) Is there any way for the entropy to increase in an closed adiabatic syatem? 2) what are the mechanisms of entropy generation within a closed thermodynamic system? Thank you

i have two UPS's that protect my computers and entertainment system. I'm at less than half the kva rating of each of the UPS's but the runtime is too low for my liking. they both run with 4 qty 6V sealed lead acid batteries. my question is: can i simply use higher AH capacity batteries...

I know working out will certainly help...as well as meditation. But what else? Is there a certain yoga, tai chi,etc. or exercise which will benefit the most?

How can you increase the mechanical advantage of geared jib crane machine?

When light propagates in a dielectric its wavevector is given by: k = \frac{\omega n}{c} where n is the refractive index. If light propagates in vacuum n=1 the momentum is \omega / c but if light propagates in a dielectric of for example n=1.33 the momentum is increased beyond the...

We've got some small mass on the string which is in rotatory movement in horizontal plane. let,s say that the velocity is v and the radius is r. Let's increase the speed of the mass by 'doing some movements with our hand'( we hold the string). Now the potential energy is greater than it was...

do you think your iq is higher when you're 25 or older compared to when you're in your late teens?

As a helium balloon increases in altitude, the density of the air inside decreases. However, the density of the air surrounding it (The atmosphere) also decreases with altitude p=p0*exp(-z/z0), where z0 is the scale height of the atmosphere. So does this mean the lift force acting on the...

hey guys, I am new i didnt exactly which section to put this in...but i know it involves math so whatever ok i was on a paintball forum and this guy came up with a modification to do to a gun to increase air effiency (which is a very important aspect in a gun) In the firing chamber of...

Homework Statement How do you express work in an isothermal increase of pressure of a solid in terms of the initial and final pressure? Homework Equations van der waals equation W=Integral of PdV (P-na/v^2)(v-nb)=nKT P=pressure V=volume n=number of molecules(constant)...

Two vectors A→ and B→ have precisely equal magnitude .For the magnitude of A→ +B→ to be larger than the magnitude of A→ - B→ by the factor n, what must be the angle between them?

hmmm... i was just wondering, if we increased the area of a wing and sacrifice drag, we should get more lift right? and if we got more lift, should we not be fly with a low velocity? And I am not talking like gliders and increasing the wingspan, I am thinking about increasing their area...

Can't the phenomenon of increasing entropy be explained as a result of the fact that in a collision of two particles the higher-energy particle always passes energy to the lower-energy particle (and never vice versa)? Hence energy becomes more evenly distributed in space...

Just a some easy questions from a newbie here, in hopes of settling an argument. If the mass of the Earth were to suddenly double, what effect would that have on it's spin and it's orbit around the sun? (My answers ()) Would the length of a year change and how much? (Shorter)...

my question is that.. is there any way to increase the pressure from 25 psi to 125 psi...is the volume is 5.2m3/min...

An increase in the OH- in a solution would result in an increase in alkalinity (baseness). an increase in acidity. a pH of 7. a decrease in pH. i think it would be - an increase in alkalinity, but I am not sure help!

Homework Statement Will an increase of voltage also increase Amps? The Attempt at a Solution I always hear this water analogy where voltage is equivalent to pressure. If I picture a pipe with some water coming out the end, increasing pressure will result in more water coming out the...

I'm reading this article (the link is to the PDF file), and I got stuck on a detail right away. There's a clock at A and a mirror at B. We want to measure the distance L between A and B by measuring the time it takes a light signal to travel from A to B and back. The mass of the clock is m. Its...

Homework Statement Suppose a power plant delivers energy at 9.7E2 MW using steam turbines. The steam goes into the turbines superheated at 665 K and deposits its unused heat in river water at 298 K. Assume that the turbine operates as an ideal Carnot engine. a. If the river flow rate is...

What are different ways I can increase the chance of getting into the college I want to go to? I'm in grade 11 right now.

Ok, so there were these things I was reading about. Mental chunks of memory. I also remember "five, plus or minus one." How can I work to directly increase the size of my chunks?

Homework Statement How much larger than 2000 is 2184 in percent? 2. The attempt at a solution I'm struggling with understanding what figure should be divided by the other. If I do 2000/2184*100 I get 91.6, obviously not the right answer. If I do 2184/2000*100 I get 109.2, leading me...

me and my friend are having an argument about this. I say that because frictional force is less than or equal to the coefficient of friction times the normal force, and that neither the coefficient of friction nor the normal force can be increased while an engine is running(until it's oil is...

So say, I'm writing a program with an infinite loop, and that I'm trying to write a file that is as large as the disk drive is, in the smallest possible time. What would be the best algorithm to do it? Clearly, such an algorithm would consume as many system resources as it possibly could. So...

a spherical balloon is being inflated. find the rate of increase of the surface area (S=4 pie r squared) with respect to radius r when r is (A) 1 ft, (B) 2 ft, (C) 3ft. Here's what i did i found the derivative of s and i put 4 2R and then i plugged in the numbers in R and i got 8 ft...

Homework Statement A man (weighing 915 N) stands on a long railroad flatcar (weighing 2805 N) as it rolls at 18.0 m/s in the positive direction of an x axis, with negligible friction. Then the man runs along the flatcar in the negative x direction at 40.00 m/s relative to the flatcar. What...

The other day I saw a report indicating that the Saudis have now begun protecting their interests by increasing production, thus moderating the price of crude so as to keep alternative fuels out of reach. I don't recall exactly where I saw this, probably on PBS or a Sunday news show, but I did...

A large aquarium of height 5.00m is filled with fresh water to a depth of 2.00m. One wall of the aquarium consists of thick plastic of 8.00m wide. By how much does the total force on that wall increase if the aquarium is next filled to a depth of 4.00m.

I was explaining the construction of Thomson's apparatus for determination of specific charge for an exam today and suddenly something popped up: Consider 2 oppositely charged plates held using insulated handles (They're not connected to a battery). If an electron moving with a velocity v...

Anybody else noticed the sudden increase in homework help type question posted here. Anybody got any suggestions as to why?

Here's the question: If the pressure of a substance is increased during a boiling process, will the temperature also increase or will it remain constant? It seems like it would increase because boiling is basically the release of pressure to create equilibrium. Is this right? Thanks a lot.

I have a car with a switchable transfercase that will allow me to choose between running FWD and AWD. I'll be putting the car on the dyno shortly, and I was just theorizing drivetrain output differences. Obviously HP numbers should drop roughly 15% because of the increase of mass on the...

I have heard of people using liquid nitrogen to boost their processor speed quadruple. Why? My best guess is because the electrons start to move so fast it makes it harder for them to merge and transfer energy. This may be completely off, I know. :rolleyes:

Everytime I plug something into my laptop USB port it tells me "This device can perform faster". Is that something I can do without replacing any hardware?

i'm looking for help to a question that i have, i have tried every thing to find an answer to it. the qustion is "how would would an increase in fuel burned affect the PV daigram of a given engine. i belief it has to do with changing of the pressure and volume figures on the PV diagram. if...

Homework Statement A motor attached to a 120 V/60 Hz power line draws an 7.60 A current. Its average energy dissipation is 840 W. How much series capacitance needs to be added to increase the power factor to 1.0? (in micro F) Homework Equations Don't know which to use at all. The...

Homework Statement How much work must be done to increase the speed of an electron from rest to 0.52c? Homework Equations I don't know :) The Attempt at a Solution I tried E=Ymc^2 where Y = 1/[1-(v/c)^2]^1/2 and got 3.19821x10^-22 J which translates to 1.998x10^-9 MeV, but I don't...

Here I describe one mechanical engineering situation that is very useful in any kind of mechanical and energy consumed industries.I hope you will try to understand it and use it. If you find any difficulty to understand ,feel free to ask me. we can increase efficiency of rotating shaft...

oic. thanks a lot. y is directly proportional to x2 x is increased by 100% find the percentage increase in y. so, y= k x2 then y= k x2 y=k 4 x2 so 4 x2 is already increased by 100%? then to find k which is y=k 4 x2 k= y/ 4 x2 find the percentage increase in y, so what i...

y is directly proportional to x2. x is increased by 100%. Find the percentage increase in y. so, y=k x2 y= k (100 + x2) then i went to find the k, which is k= y/ (100 + x2) so i put back the k which i found into y= k (100 + x2) which is : y= y/(100 + x2) (100 + x2) them I...

If a spinning ball hits the floor is it possible for it to increase in velocity in the direction it is travelling? If so could you please explain with an example? And what Equations would you use? Thanx.

Hello, I was wondering if anyone knew a calculation or method to determine the amount of current moving through a given material, knowing the resistance of the material, the specific heat and the temperature (while the material is actually being heated by current). Thanks, -scott

Is it possible for a wheels forward velocity to increase when separated from a moving vehicle? If so please describe what makes this possible?

Well the author claims you can vastly increase your intelligence by simply swimming underwater for a couple of weeks. I want to know what you guys think, and if it would even be safe to try: http://www.geniusbydesign.com/other/windocs/guarante/guaran3.shtml My own opinion right now is a...

Im not sure if anyone can help me with this, I haven't seen a question like this I am guessing its easy. I tried just taking the integral and evaluating, bu tthat gave me a wrong answer. Q:The marginal cost of producing x units of a certain product is 74+1.1x-0.002x^2+0.00004x^3. Find the...

Hi everyone, I'm given a graph of the object's displacement and frequency and the object is executing SHM. The question asks what would the graph look like when the mass of the object is increased to lower the amplitude of the oscillation. Personally I think that the natural frequency...