increase Definition and 843 Threads

I need to increase the surface area of the glass which will be used in a solar still with the intention of keeping the glass as cool as possible. My first thought was bubble wrap because it's transparent and I thought it would not interfere with the light but then I remembered it is a good...

If the length and width of a rectangle garden plot were each increased by 20 percent, what would be the percent increase in the area of the plot? My Work: Here I am thinking geometry mixed with algebra. The area of a rectangle is found by using A = bh. A = (0.20)(0.20) Correct set up?

Increasing the original price of an article by 15 percent and then increasing the new price by 15 percent is equivalent to increasing the original price by what percent? The only thing I can do here is let x be the original price percent increase. Honestly, this percent question is ridiculously...

I am doing MS in Electrical Engineering. Would joining student organizations help build my career? People do advice me to join few organization but I have zero or less experience (i am more of an introvert) being in them. What kind of organizations would you expect me to join? Do they need to...

Why wouldn't a brown dwarf grow in radius if it started to gain mass?

Suppose you have a glass of water, and you beat a spoon on the bottom layer of glass through the mouth of glass, repeated beatings in a regular fashion will cause in increased frequency of sound produced due to the spoon beating?What causes such increase in frequency?

Can a setup be made such that the efficiency of spontaneous parametric downconversion approaches 100%? From what I have been told, this would be possible using classical input fields matching both the pump and output frequencies, but I am unsure if one could simply use laser of both frequencies...

I want to know how many time I have to increase 30 by 3% before it is greater or equal to 500. I think this is the correct formula: 30 * 1.03^x >= 500 What steps do I have to take to solve it?

I have a plate capacitor with a given charge. It is then dipped in a dielectric fluid and I must determine which height the fluid reaches(all the necessary parameters are given). I can solve this problem if I make the following assumption: the polarization of the dielectric does not( or...

Hi; Let's imagine that I have an antenna and a biological tissue. The antenna emits the frequency of 1e7 Hz and I have a temperature increase x. When the antenna emits the frequency of 3e7 and 6e7 Hz the temperature increase is the same. How can I explain?

Hello, in class we learned about the hydrogen atom and in particular the quantum states describing the electron in hydrogen atom (we denoted them as usual by 1s, 2s, 2p etc.). Whenever we talked about state transitions of the electron, like transition from 1s to 2p state, we imagined an...

The deuterium exists only with the proton and neutron of aligned spin, which suggests that the residual strong force is greated with aligned spins, i.e. the binding energy is greater if the spins are aligned. On the other hand the mass of ##\Delta^{+}## is greater than the mass of proton ##p##...

Hi all. Hopefully this is in the right place. I tried using an online percentage calculator, but it's not giving me the correct results, and was hoping someone here could help me. From 300 to 3,850 - what percentage increase is that? -and- From 300 to 5,000 - what percentage increase is...

This year in Kolkata, we are facing severe trouble from lightning. In the previous years when it rained, lightning was much less. This time, even before it starts raining, lightning starts, and it reaches the ground, taking lives. As soon as the clouds start appearing, lightning bolts reach out...

Good morning all, Ever since I encountered biomass brick presses I've had a renewed fascination with the use of compound levers to increase mechanical advantage. So my question is about the fulcrum location and its impact on MA. Let's say we have a simple class 1 lever A and we wish to...

Complete question: Will flow ever reverse or stop if we increase resistance in this pipe scenario? There are 2 comunicating vessels. The highest vessel is coninuosly alimented with new water. Water in excess flows down on the sides. Water will try to reach the same height in both vessels, so...

I am extremely confused by the use of the term coefficient of increase of something. For example , if it is stated that the index of refraction varies linearly with a coefficient of 2.5×10^-5, how is this coefficient defined? Is it simply the slope of the line plotted with index of refraction on...

Pretty self explanatory really. If a photon has a mass (1.67 * 10^-27 kg), and it travels at the speed of light, why does it's mass not increase to infinity?

Wondering if I have a sealed steel tank filled with air and the air temp is 0C and the air pressure in the tank is 0, then heat is applied to the tank - what will the pressure be 100C? At 200C? At 300C? I assume the rate of expansion is constant, but correct me if this is wrong. Thanks.

If a product costs a retailer \$2.20 and it is sold at \$3.19 what is the % mark-up and how does one arrive at that? thx

Homework Statement A person turns up the volume on a radio. Which aspects of the motion of a point on the diaphragm must increase? a. maximum displacement only b. average speed only c. both maximum displacement and average speed d. neither maximum displacement nor average speed Homework...

I used sailcylic acid and acetic anhydride to produce aspirin and preformed recrystalisation to purify the aspirin. I need to evaluate why I have a higher/lower melting point. In this case, the melting point was 143°C whereas the true meling point is 135°C. I thought one of the reasons my...

Homework Statement Homework EquationsThe Attempt at a Solution This looks to be a simple problem but the answer key has left me wondering whether I am thinking correctly . I get option 1) whereas answer key states option 3) . Since the variable resistance R increases , the resistance...

If energy is released during nuclear fission, why is the mass of the products (the two new nuclei and fission neutrons) greater than the mass of the original nuclei? In accordance to E=mc^2, shouldn't the release of energy result in the products having a lesser mass than the original nuclei?

Hi folks, My question relays on the difference of consumption power of a coil when it's on AC and CC regime. A coild is made of copper wire with air core, aplied on it a CC current of 1 amp, a measure was taked and nottice a 5W of power consumption. Then the power supply is changed to and AC...

Homework Statement An object is moving to the right in a straight line. The net force acting on the object is also directed to the right, but the magnitude of the force is decreasing with time. What happens to the object? The answer states that the object continues to move to the right with...

The past year and a half have seen an unexplained increase in MLB home runs. Interesting article. Bounciness, weight, and air resistance seem to be involved.

In reading about the photoelectric effect I noted that frequency accounts for the energy of the photon which must be high enough to liberate free electrons and the amplitude is the cause of intensity.Now, how can the amplitude be responsible for more than the liberation of more than one photon...

Why is entropy lost by hot water less than the entropy gained by the cold water?From perspective of energy,why is it better to take water and heat it to a temperature than it is to mix hot water and cold water to get a particular temperature.

we planning to heat water directly using microwave for industrial purpose. we need only 33deg Celsius for that I need this.

Why does an iron core increase magnetism? Apologies if this more advanced than high school. EDIT: Disregard, found article on magnetic reluctance.

Well, maybe that's a simple question, but it has been pissing me off for some time ... Does entropy increase with improbability?

In special relativity, an object moving at higher speed experiences time dilation, length contraction, and mass increase, compared to an object moving at slower speed. In general relativity, for an object in stronger gravitational field (i.e., with higher acceleration due to gravity), time runs...

Suppose a body is held stationary at a height h above earth, having some PE Now if the same body is in orbit around Earth at same height, owing to its velocity its mass increases causing the PE at that height to be more than what it was when the body was stationary. Where did the extra energy...

i know there is a certain probability for an electron to fall to a lower energy level,without an exciting event,like a collision. Is the reverse also true I.e that a electron could jump to a higher level,without absorbing any extraneous energy..if so are the lifetimes in the new state the same...

Homework Statement If I have two current carrying conductor carrying current is same direction, they move towards each other so kinetiisc energy increases. So which force does work here? Homework EquationsThe Attempt at a Solution I know magnetic force can't do work, is work done by some...

Not sure this should go here (you guys need a thermodynamics section). But there is quite the debate going on about cooler objects being able to increase the temperature of warmer objects here: https://wattsupwiththat.com/2017/11/24/can-a-cold-object-warm-a-hot-object/comment-page-1 They are...

Hi! As we know air bubble in the water rises due to buoyancy and quickly reaches its terminal velocity. What is more, as bubble rises the pressure decreases, consequently the volume of the bubble increases resulting in buoyancy becoming larger. So the terminal velocity doesn't remain constant...

Hi, I'm new to the forum and i am encountering a problem with my wifi router I am using RT-AC68U in a house that farthest place to the router is about 15 meter away but with 3 walls between it and my cellphone. I am getting weak signal and sometimes it disconnects from 5GHz band but 2.4GHz is...

Homework Statement Estimate the pressure increase required to impart 1 J of mechanical work in reversibly compressing 1 mol of silver at room temperature. What pressure rise would be required to impart 1 J of work to 1 mol of alumina at room temperature? For alumina take the molar volume to be...

Will placing a solenoid inside another solenoid increase it's over all strength? While doing research into solenoids I came across the MagLab (The National High Magnetic Field Laboratory) where they place coils one inside another to bolster the field, and reach upwards of 45 Tesla. They use an...

Homework Statement Estimate the pressure increase required to impart one joule of mechanical work in reversibly compressing 1 mol of silver at room temperature. Same process for alumina. Homework Equations W=-PdV dV=V(alpha)dT-V(beta)dP dT=0 The Attempt at a Solution I used the work...

I understand that you need to increase the pressure in an IV bag to overcome the pressure in a vein so fluid pumps into it. But why does lifting the bag at some height increase the pressure?

hi, I read somewhere that if we increase the PID gains unnecessarily, it will cause more energy consumption of the controller and it will lead to noise and distortion in the practical. May someone please give me more explanation on this?? that how it lead to noise or distortion in practical??

<Moderator's note: Moved from a technical forum and therefore no template.> A simple pendulum of length l (supported by a light, rigid rod) is released from rest at a small angle to the upward vertical. Show that the time taken for the angular displacement to increase by a factor of 10 is...

Homework Statement How much do you need to increase the pendulums length by to double the pendulums period Homework Equations T = 2PI sqrt(length/gravity) The Attempt at a Solution Answer is 2sqrt(l). But I don't know how to get there. Any help would be greatly appreciated, thanks.

Hi, I have yet another question in the field of the special relativity theory. I always thought that the derivation of the relativistic mass is trivial. But I discovered that there is some complexity due to the transverse and longitudinal relativistic mass derivation. I saw a thread where...

In a spectrum from an MCA (that is hooked up to a scintillator and PMT), does an increase in amplifier gain cause the peak to shift towards higher channels? I have a source and its really weak so while calibrating my detector, I had to turn the gain up way high to see a peak, but I'd preferably...

Homework Statement [/B] At high temperatures the nitrogen molecule behaves like a one-dimensional harmonic oscillator. In this situation, estimate how much heat must be added to the system in order to increase the temperature of 1 mole of nitrogen gas by 10 degrees Celsius (for constant volume...

Hello everybody, I am currently working on desinging a tool, and I would like to get your advice on how to increase it's stiffness. The tool will be used for correct positioning of a component. It consists of 2 parts : And