increase Definition and 843 Threads

by how much will single-slotted Fowler-type flaps increase the drag coefficient of an aerofoil?

my uncle has been watching the videos on youtube with all of the people who supposedly gained gas mileage by installing a water electrolizer on their car and running the gases emitted into the intake. now I've tried telling him about the conservation of energy law and how that little bit of HHO...

I have propelled a wagon by a spring that gives out a constant force with various weights added and the wagons acceleration when the first weight is added increases from what it was with no weights. When the next weights are added the acceleration fall from what it rose to but I'm stumped...

Approximetly how much is the drag coefficient if orginally the coefficient is 0.02689. I know it depends on aircraft etc but I am only looking a rough estimate.

1. Wind turbine produces 8MWatts (If wind speed is proportional to the 7th root of altitude) (Wind power is proportional to the cube of wind speed First the turbine is at 450ft then reconstructed at 650ft, how much faster is wind speed? and how much more power?2. Sw= 7√Altitude, Pw= (Sw)33...

Hi, I'm having trouble understanding what exactly the gradient of a scalar field represents. According to wikipedia and the textbooks I have it points in the direction of greatest increase and has a magnitude of greatest increase. This by itself seems fine. However, I have also been using it to...

Homework Statement At Earth’s location, the intensity of sunlight is 1.5 kW/m^2. If no energy escapes Earth, by how much would Earth’s mass increase in a day? (Radius of Earth is 6.37 × 10^6 m.) The Attempt at a Solution ok so, at anyone time, half of the Earth is lit. so surface area lit =...

Homework Statement Does the current drawn by an electric motor increase or decrease as the motor starts from rest? Homework Equations The Attempt at a Solution I can't find an answer anywhere. I would think it would decrease because less power would be required to keep the motor...

y=-(x-3)^5(x+1)^4 For this function currently i have: degree: 9 sign: negative ? quadrants: I, II and 4 Roots: x=3 and -1 y-intercept= 243 domain: x belongs to E range: y belongs to E INTERVALS of INCREASE : ? INTERVALS of DECREASE : ? End Behaviors: As x approaches -infinity, y...

I am a trumpet player at a conservatory and I've been told for years that reducing the amount of air pressure through the trumpet will increase the volume of air that flows through the instrument. The people that have told me this always cite Boyle's law, but my understanding is that Boyle's...

In normal conditions, it takes a long time for wood to burn. But if you add some oil (or something similar like butter) it tends to burn faster. So, does adding such additives increase the calorific value? What makes the wood burn faster? Is the "faster" burning of wood and calorific value...

Homework Statement Consider the behavior of the circuit, when various values increase or decrease. (Select I-increases, D-decreases, If the first is I and the rest D, enter IDDDDD). A) If R3 decreases, the current through R4 ___. B) If R3 decreases, the current from the battery ___. C)...

We were covering Lorentz Transformations yesterday in class and going over the derivation from Gallilean transformations. Obviously everyone knows that in Gallilean Transform, it is basically velocity addition depending on which refrence frame the observer is in. When dealing with speeds...

why there is sudden increase in the small reverse saturation current at the breakdown voltage?...

Hi, I am not a mechanical engineer but an aeronautical engineer. Hence I am very poor with Mechanics & request for your help. I am working on design which produces approximately 17,400N-m of Torque at 25RPM. I want to maintain this Torque but increase the RPM to 1500. Is that possible? I...

Hey all, I'm sure this is simple, but I can't seem to find the answer in the Maple help section. When drawing 3D shapes, I want to be able to up the number of dots used to constitute the image, thus increase the resolution of the object. My spheres are showing up a bit boxy...

Homework Statement Hi, this isn't a homework question, it's for a physics project! Consider the following diagram: I was wondering what the speed of the air would be at the point A (orange dotted line). The red rectangle is a packet of air of height 1m and width d. Presuming that...

Could placing a photovotaic inside of focus of a concave mirror amplify the effiecentcy X times?would commercial panels take the extra lumens?

Hello everyone, Can anyone explain simply why heart rate increases in inspiration. Also why does the aortic valve close before pulmonary valve in inspiration? In inspiration does superior vena cavae get more blood? From what I read there was something to do with blood pooling inside the lungs...

Homework Statement A person weighing 6.0 × 102 Newtons rides an elevator upward at an average speed of 3.0 meters per second for 5.0 seconds. How much does this person’s gravitational potential energy increase as a result of this ride? (1) 3.6 × 102 J (3) 3.0 × 103 J (2) 1.8 × 103 J...

i was thinking of using a 555 timer to create a low duty cycle TTL square wave to power an array of Inferred LEDS at a very high current for short segments of time. basically i want to get really high outputs from an led and keep it from frying itself by turning it on and off really really...

Homework Statement What could you do to increase efficiency between the cart and the ramp? As in pulling a cart (with wheels) up an inclined plane. Homework Equations The Attempt at a Solution One solution could be increasing the angle to increase efficiency. I was wondering...

Homework Statement I just translated this word problem: The zone of a alga increases every 2 month about the factor 4. How many days does the alga needs to increse into the double? How many days ago has the alga been the half? Homework Equations The Attempt at a Solution...

why tide force makes distance between Earth and moon longer?

I read in a book that mass is invariant. Does this mean that an object's mass does not increase as it approaches the speed of light?

It has been said that physics still occur inside a black hole, excluding the singularity. It's just that we can't observe the physics. The spin of black hole is measurable. What I want to know is; does the INCREASE in spin as the object gets ever smaller stop increasing at the moment in...

Homework Statement In a pig-calling contest, a caller produces a sound with an intensity level of 90 dB. How many such callers would be required to reach the pain level of 120 dB? Homework Equations i don't know The Attempt at a Solution The way I understood it from my book, for...

I have a frequency from a sensor in my truck that it 2.5 volts constant and the frequency varies depending on the amount of pressure that the sensor recieves. is there a way that i can manually change the frequency of the signal that the sensor puts out? i want to be able to increase the...

I have a general question about otto cycle. If we heat a gas with constant volume its temperature rise according to PV=mRT. However during Isentropic compression(delta Q and delta S is zero), the volume is becoming less and pressure is increasing but i don't know why the temperature should...

For Kaolin slurry filter presing we are using progressive cavity pumps.After three months of operation we found that the pumping rate is reduced a lot.Upon investigation we found taht this is because of the abrasion. 150 micron Chromium coating done, still after three months ,this again failed...

relativity states that as v approaces c mass increases but my question is that if we are going fast and suddenly mass increases then simultaineously we must slow down and thus we will be back to original state by this hypothesis i believe that mass expansion is only for minute seconds AM i...

Homework Statement When air expands adiabatically (without gaining or losing heat), its pressure P and volume V are related by the equation PV^(1.4)=C where C is a constant. Suppose that at a certain instant the volume is 450 cubic centimeters and the pressure is 81 kPa and is decreasing at...

Consider the following steady-state dissipative system. A mountain stream flowing 1 liter per second drops 100 meters over rocks and boulders, and at the bottom has both a temperature increase and a residual kinetic energy (velocity). The sum of the temperature rise and the kinetic energy is 980...

Homework Statement A particle travels across a heated plate according to the path f(t) = (t^2, sint) at the time t seconds. The temperature T(x,y) at position (x,y) on the plate is given by T(x,y)= 200E^[-(x^2 + y^2)] degrees Celsius. At time t=pi seconds, is the particle traveling in the...

2.1 x107 kg of ice and snow at 265 K slides 0.55 km (vertical distance) down a mountain in an avalanche. What is the increase in entropy? I am having trouble finding an equation on how to solve this problem. If anyone could help me at all, thank you.

I want to find the increase in the temperature of a resistor due to joule heating. I mean that if we apply some electrical power to a resistor then the electrical energy is converted to heat energy due to joule heating. The heat energy will increase the temperature of the resistor. Is it...

Might one have a warming planet, without CO2 increase? The last 15,000 years is evidence for such case, since pre-industrial CO2 is considered as ~280. If one had a slow down in vertical mixing (i.e. lower surface water turnover; say 1% over 100 yrs for 15,000 yrs- giving 150%), resulting...

I created an led flasher using a 555 IC, 2 1k Ohm & 1 100 Ohm resistor, and 1 1000uF and 1 .01 uF capacitor. If you need to know exactly how it's wired up I can make a schematic. My question is how would I increase the flash rate? I need a flash of about 3(up to 5) per second. As you can tell...

Homework Statement an 5kg object speed up from 5m/s(point A) to 10m/s(point B) at point A, the energy is 0.5mv2 = 0.5(5)(5)2 = 62.5J at point B, the energy is 0.5mv2 = 0.5(5)(10)2 = 250J I don't not sure why the energy in the object is increased when it speeds up from point A to point...

Homework Statement An Aerosol has a of pressure 250kpa at 17 C.The aerosol is left in the sun and its temp.rises to 27 C.Calculate new pressure in the can if its a 35% increase in the amount of vapour present. Homework Equations P/T= constant The Attempt at a Solution well tbh i...

An empty cylindrical canister 1.60m long and 89.0cm in diameter is to be filled with pure oxygen at 27.0 C to store in a space station. To hold as much gas as possible, the absolute pressure of the oxygen will be 21.3atm . The molar mass of oxygen is 32.0g/mol. How many moles of oxygen does...

I'm about to start a 4-year Masters degree in Physics at Imperial College London, which supposedly includes a Year spent in Europe, working on a research project. Recently however I am beginning to doubt myself as to whether it is worth spending that year abroad as I will have to spend a...

I am trying to settle a score on probability and odds, and I just wanted to see what everybody thought. This springs from the fact that when you watch "Deal or No Deal" and cases are removed one at a time, Howie frequently announces that there is a 15% chance that the case holds a million...

Is it proper to say that when the LHC accelerates particles, those particles experience a mass increase? What is the Special Relativity explanation of the mass increase, i.e. do the particles have increased mass when observed in the rest frame of the detector or do the particles have the same...

I've recently been pondering the following thought experiment: Assume that the Earth was to gain a large amount of mass in a very short time, which effectively increase the mass of the Earth by approx. 1.5 * 1021 kg, and this in course of say five years. What I've been trying to figure out...

Hello all, I was wondering if it is possible to increase voltage if you combine 2 DC motors together? I know that it is NOT possible to increase the voltage if you put it into a series circuit since it won't work. As for the batteries you can increase the volts if you put them into the...

Hi guys, :D MORE good news it seems. was reading , http://www.themanufacturer.com/uk/content/9339/Airbus_get_" and it said Airbus was getting a 28 million pound grant. This will keep close on 2000 http://www.careers-jobs.eu/aerospace-jobs" safe. Could this be the sign that things...

i have a camera with the horizontal field of view as 40 cm, and vertical around 30 cm noted at around 5m from the camera. I wish to increase the FOV of the camera. Please suggest me a few ways to accomplish that. thanx

Homework Statement How exactly does connecting cells in series increase the voltage on the atomic scale? Does it speed up the electrons somehow? Explanations appreciated!

If the expansion of the universe DID increase entropy, it would explain a lot of things but also leave me with a lot more questions.