increase Definition and 843 Threads

Homework Statement By how much does the mass of the Earth increase each year as a result of sunlight reaching it? Radiation from the sun reaches the EArth at a rate of 1400W/m^2 of area perpendicular to the energy flow. Assume 100% absorption. Homework Equations I'm sorry but I haven't...

Inspired by http://www.news.com.au/story/0,23599,23696646-13762,00.html" . Would running before you spit increase the distance your spit travels? I figure, most of the energy comes from your mouth, and you'd probably stop at the end of your run, so would a "running start" increase the distance?

how can we increase the efficiency of brakes in an ATV specially? I'm working on an ATV these days n plan to use disc brakes... i read about cross-linked braking circuit...can someone tell me how efficient is this system...should i try to employ it?iv heard it has been used in Audi before...can...

If gravity on Earth were to increase overnight by 10% how do I go about calculating the way this would affect my movements, how fast I could walk, run, swim etc and how this would affect my muscles? I'm presuming my body would be working harder so I would find movement more tiring and would be...

Hello, could someone help on this question?? ok, I'm trying to find out how much a piece of wood expands and contracts with changes in humidity and temperature, I'm sticking a strain gauge on the wood to detect the expansion and contraction of it. my question is if the temperature increase...

Hello All, glad to be a part of this elite community, i have been following the forum threads for quite few days now, i am really interested to hear from Mr.Berkeman. here is my problem: we are facing a problem at the rectified output of our power supply, we have used a bridge rectifier to...

If an atom with more protons have tighter electron orbitals than atoms with fewer protons, why doesn't the "atomic radius" decrease up the periodic table? Instead it increases, why is this?

Hi all - this (seeming) paradox has been brought up on a few other forums with less than illuminating results. I'm curious to see what the solution is. Okay, so, you're watching a massive object approach the speed of light. From your reference frame, you are measuring the increase in apparent...

Ok, I need to calculate the increase in temperature of a nail hit by a hammer with force of 500N. The length of the nail is .06m, so the work done and, I'm assuming, the energy added to the nail (Q) is 30 Joules. The specific heat capacity of the nail is 450 J/kg *C(degrees Celsius). By using...

I'm relatively new to physics. I know that dropping 2 objects, at the distance from the ground, they will land at the same time. But what would happen if you dropped objectA at 2 meters height, and held objectB at one meter height, and only let go of objectB, when ObjectA has already...

In testing the loss through a fiberglass panel I experienced instances where the received power level increased. I have checked and double checked my setup and changed the distances between the horn and panel, I still am seeing odd results. Has anyone had any experiences such as this. I am...

What I've learned is that when going at a fraction of C, the energy put into the acceleration is transferred into mass. However what is strange is that its gravitational strength does not increase. People keep saying that gravity is a property of the invarient mass and that alone. So then...

hi, I am 21 years old 180cm tall and 73kg, I'm an ex smoker. I'm in the process of an army application but need to improve my peak flow. will increasing my vo2 max help and are there any other ways to increase peak flow.

an experiment^^ in a closed container, means tat it has a constant volume. when i increase the air pressure inside(without heating), the result is the temperature will increase. why? can i hav a theoretical explanation? thx for reading

Homework Statement A freight train has a mass of 1.2e+7 kg. If the locomotive can exert a constant pull of 8.4e+5 N, how long does it take to increase the speed of the train from rest to 82 km/h? Homework Equations (mass*velocity)/time=force The Attempt at a Solution (1.2e+7 *...

A warning is often given that if one wants to have a spaceship traveling at relativistic speeds (usually to get to another star), the ship's mass increases, making acceleration more difficult. But if it where an antimatter propelled ship, with mass being turned into energy, then wouldn't the...

Does knocking out SCH9 and SIR2 in mice increase their lifespans by 6 times? Longo said age-dependent mutations increase at a remarkably low pace in organisms lacking both SCH( and SIR2 but does that apply to mice as well as yeast?

OK, i have a final coming up, and i need a little help... i need to know how and why an object moving faster acquires more mass... it doesn't make sense... mass is how much matter somethign has as far as i know, but when you speed up, you acquire more mass? this goes hand in hand with the length...

Alright, i have a final and i have to explain just three parts to einstein's theory of relativity... they are space travel (time slowing nearing the speed of light), increase of mass with speed, and length contraction... the space travel makes no sense, and the mass one, i have mixed feelings...

Situation: Start pressure: p1=1 bar; Volume: V=36m3; Temp.: T1=T. Now I need to increase the pressure to 6 bar, but the volume remains unchanged. So: End pressure: p2=6 bar; Volume: V=36m3; Temp.: T2=T. So volume and temperature remain unchanged. What amount of gas (m3) do I need...

How can we increase our interpersonal skills?

I understand that physics is mostly based on empirical evidence, but sometimes it's interesting to know how some things are explained. My questions about friction are: 1. Why does friction increase as velocity increases? 2. Why does it take time for friction to become equal to the...

Suppose we have box with a volume V which is divided down its middle. So the box is split in two sides with equal volume (V_1 = V_2) and gas molecules (n_1 = n_2). Now, we remove the partition and the gas from both sides mix. Is there an entropy increase in the system? The whole process is...

Homework Statement You're in an airplan whose two engines are running at 560rpm and 570 rpm. How often do you hear the sound intesity increase as a result of wave interference? Well, i know that the intensity will increase when the wave interference is constructive, but point me in the...

I know this is a simple problem, but I don't know where to begin. Please help! A small immersion heater is rated at 350W. Estimate how long it will take to heat a cup of soup (assume this is 250 mL of water) from 15 degrees celsius to seventy-five degrees celsius

I'm trying to design a synchronous logic that uses a negative edge flop to shift data out of a chip (as part of the IEEE1149.1 standard). The input to this negedge flop is muxed from a whole bunch of shift registers within the chip, and these registers are all on posedges. Ideally, if...

hey guys imm new here i got a question in my book i can't figure out it says: an athlete executing a long jump leaves the ground at a 30 degree angle and travels 7.80m (a) what was the takeoff speed? (b) if this speed were increased just 5.0 % how much longer would the jump be? anyone...

an increase of $0,15 on a price of 2,50 is an increse by a fraction of 0.15/2.50=0,06 expressed as a percentage,therefore a 6% increase I don,t understand this and why we put 0.15 is numerator

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...