decrease Definition and 231 Threads

A cubical block of ice is melting in such a way that each edge decreses steadily by 8.8 cm every hour. At what rate is its volume decreasing when each edge is 5 meters long? this is my work Let l=l(t) be the length of each edge at time t then volume = l^3 dl/dt = 8.8cm/h = .088m/h...

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...

why does magnetic field strength decrease much faster than the inverse square of the distance like gravity? Is it because the force lines have to curve back to the source? Is magnetism also carried by an "imaginary" particle? Thanks. Mr Beh

Homework Statement A thin copper ring rotates about an axis perpendicular to a uniform magnetic field H_{0} =200G. Its initial frequency of rotation is \omega_{0} . Calculate the time it takes the frequency to decrease to 1/e of its original value under the assumption that the energy...

Lets say that there's a bucket swinging on a string (the top of the bucket is connected to the string) and there's a small hole in the bottom of the bucket, will the frequency get bigger or smaller? i think that it will get smaller because as the bucket leaks the water gets closer to the bottom...

Does a magnet's field strength decrease when it interactes with an object? Say I had a magnet and It pulled on a metal bar with 1 Newton of force then i put another bar by it. would it continue to pull on the first bar with 1 Newton of force?

Im having a problem with curve sketching i can't figure out how to do this problem. I am confused. Heres the question 1. For the following curve find: a)the domain b)the intercepts c)the asymptotes d)intervals of increase or decrease: local maximum and minimum e)concavity and the...

Sir, 1) A thick plane mirror shows a number of images of the filament of an electronic bulb. It is said that of these images the first image is the brightest. Is it true? If so, is it because some energy is lost in traversing through the dense medium? 2) It is said that the...

A dipole lies on the X axis , with the positive charge q at x=d/2 and negative charge -q at x=-d/2 .i know that the electric flux through the surface in YZ plane (midway between the charges) will be zero .now this surface is rotated so that the normal to the surface is no longer parallel to the...

We have a pair of capacitor plates that are being pulled apart against their attractive force at constant potential difference. We find that the energy stored between the plates decreases when this happens, and we are asked to explain why the energy decreases even though work is being done...

In an Oscillating system,as damping increases, the amplitude of the system at the resonance frequency decrease and the resonance frequency also decreased. However why does the reasonce freq decrease? I know how to solve for the new amplitude and ang. freq. mathematically but i do not know how to...

hi everybody how are you?:smile: this is the first time i write here , i hope i be good frind for you , & I'm sorry about my language , but i think I'm not very bad:wink: :smile: . i have a quetion about the special theory of relativity? Einstein sied" when the speed is increase the...

Driving along a crowded freeway, you notice that it takes a time t to go from one mile marker to the next. When you increase your speed by 4.0 mi/h, the time to go one mile decreases by 9 s. What was your original speed in mi/h? (this is from chapter 1 in my physics book, but it's been a long...

When two electrons move away from each other, does the potential energy of the system increase or decrease?

hi, i was just wondering if a wave's wavelength will change when it goes from a light string to a heavier one. I think it wouldn't affect it, however I know that velocity will be affected as the linear density will be changed. But am I right, will the wavelength remain unaffected?

If one could observe the individual atoms making up a piece of matter and note that during a process of change their motion somehow became more orderly, than one may assume which of the following in regard to the system? a. increase in entropy b. decrease in entropy c. gains in thermal energy...

One of the issuses adresed by the organising committee for the World year of Physics is the decrease in the number of physics students worldwide. (see [PLAIN]www.wyp2005.org/overview.html[/URL]) In my country India, a few people with post graduate degrees in Physics complete their Ph.D 's and...

I would like to understand why my 100uF 6.3V X5R dielectric ceramic capacitor decreases to ~60uF under a 5V applied DC bias. Can anyone explain the physical phenomenon?

This question is really bugging me. If water is in a sealed and insulated container and is stirred will the temperature slightly increase, slightly decrease or stay the same? Explain your answer. I'm really stuck. I was going to say slighty increase, but I'm not sure because can you...

Small question: The capacitance of parrallel plates decreases as you increase the distance between them, why? I know the voltage increases, because the electric field is constant, but how does this stop more charge from entering the plate? I mean our voltage relative to some far-off charge is...

I am not a physicist nor a mathematician. I am not familiar with Einstein's actual equations so I don't know. This is simply a thought in the form of a question. Photons and electromagnetic waves travel at c. At the speed of light time goes to 0 (zero); also, time is negative in the equations...

Does the force of gravity tend to decrease as an object's acceleration increases on a plane?

why does the potenial decrease in case of a capacitor

Hello, I have a question about these things What is the local Max, local Min, when is the function increasing and decreasing! the function is: G(x)= x - 4 sqrt[x]

An expanding universe is a solution to Einstein's equations. So particles become farther apart with time. I wonder how the conservation of energy is accounted for in this expansion. Does the gravitational potential energy increase as the expansion of space creates greater distance between...

if we introduce a conductor b/w the plates of a capacitor then what will happen? will the capcitance increase or decrease?

I've been reading about the physics of sound. Perhaps I'm just reading an overly simplified version of the truth, but it would seem to me that as the particles of the medium sound is traveling through compress and expand, inevitably bumping into each other, that they would loose some kinetic...

Problem 25. A railroad car with a mass of 2.31*10^4kg moving at 3.59m/s collides and joins with two railroad cars already joined together, each with the same mass as the single car and initially noving in the same...

Is it possible, even though highly improbable, that entropy could decrease with time i.e. particles randomly form a more ordered state to 'unbreak' something. If so I realize that they are incredibly unlikely to do so and it only is hypothetical but since this is a law of physics (I think) then...

My computer is (supposed to be) 1.8GHz, a few weeks ago when I viewed the information in "My Computer" it said I had 1.46 GHz.. and a few days ago it fell to 1.10GHz, and hasn't changed since. What causes the GHz of my computer to decrease? How can I fix it?

Yo, d00ds, my Physics book mentions the concept of Heat Death (All the energy in the universe going to an unusable form) but says that it might not be valid if the universe is bounded in certain ways Does that just mean that if the universe hits a Big Crunch, it won't experience Heat Death...