Applied Definition and 1000 Threads

Homework Statement Two parallel metallic plates are placed horizontally with a separation of 2.2mm. When the voltage is reduced to zero (so that the plates are neutral), the particle (or sphere) is observed to fall with constant velocity. It is observed to travel 0.85 mm in 8.9s. A new p.d. V...

1. A mass of 5kg moves horizontally across a smooth surface at 1ms-1. Another mass of 5kg is lowered gently onto the first mass. a) What is the change in velocity of the mass? b) What impulse has been applied to the mass? c) Is this an elastic 'collision'? 2. force x time = change in...

I have recently learned that a class that I need for my major is full and so am considering taking physics for pleasure. My only dilemma is that I cannot afford to let my GPA slip if I could not perform to standard with the mathematical applications involved. I have never taken physics before...

Hi, I am taking a methods of applied mathematics course in Spring 2010 semester. The previous semester proved to be a bit overwhelming and the professor used a textbook that I found inadequate in fully understanding the material. The course content will follow this syllabus with some...

Hey guys, I've been going through a dilemma lately. I'm currently an engineering major and I've completed all the math and engineering courses available at a JC. But for some reason I don't feel truly happy or excited about engineering. I got A's in all my engineering classes but I honestly do...

At an altitude of 315 m above a lake, a hot-air balloon pilot drops a 2.50 kg sandbag. If the bag comes to a stop 4.50 m below the surface of the lake, what force was applied by the water on it? Mass:2.50kg velocity: 2.50kg*9.81m/s=61.31? I can't remember how to figure out what the time...

Homework Statement The coefficient of kinetic friction between a 20kg box and the floor is 0.40 -> How much work does a pulling force applied 37 degrees above the horizontal do on the box in pulling it 8.0m across the floor at constant speed Homework Equations F(kinetic)= F(normal) x...

Hi, (I posted this on TSR as well, but they're being a bit slow...) Take the following setup: If you move the bar magnet left and right (a few cm) inside the coils, so that the ends do not leave the coil, will it induce a current/emf? I presume it does so, as I have been taught. But I don't...

Ok, so I have been looking at Zeno's Paradox and it occurred to me that it could possibly be applied in physics. The way i worked it out is like so: If an object A is traveling at half the speed of light is given a head start in a race vs an object B that is traveling at exactly the speed...

Homework Statement A block of mass m1 = 2.0 kg is stacked on top of a block of mass m2 = 3.0 kg which is resting on top of a table Both blocks and the table are made of the same material; so the coefficients of friction between all surfaces are the same They are (attempt at a mew) ms = .60...

Applied Physics --> Physics? Hi, Is it possible and feasible to switch from Applied Physics (say with a PhD, having worked on accelerator physics) to 'pure' Physics (say theory, or experiment, in high energy physics)? I'm trying to weigh my options as a senior undergrad in EE wanting to...

has luck been a factor in your exam? How does it compare in pure math exams to applied math exams? I personally feel that in applied math I'm able to do w/e i have practiced, luck isn't that important. But in pure math i need a luck factor as well, along with a good practice. I feel like have...

The experiment showing that, time is relative, and how it changes with velocity and gravity. Einstein's twin experiment. One twin stays on Earth while the other flies for 5 years at some velocity near the speed of light. let's say he travels at .8c. he then turns around and travels at .8c back...

Homework Statement What must be the applied force (25 degrees above the horizontal) in order to accelerate a block at 1.1 m/s^2, if the mass is 2kg and the coefficient of kinetic friction is .3?Homework Equations F(net y)=Fn + Fav - W Ff = μ x Fn F(net x)=Fah-FfThe Attempt at a Solution I've...

1. The uniform bar shown in the diagram has a length of 0.80 m. The bar begins to rotate from rest in the horizontal plane about the axis passing through its left end. What will be the magnitude of the angular momentum of the bar 6.0 s after the motion has begun? The forces acting on the bar...

I have an interesting scenario. I'm trying to determine the amount of force that is applied to the underside of a bottle cap (the force from the bottle neck pushing upwards) as the cap is torqued onto the bottle (assume a 16 oz plastic bottle of Coke for example). After contact from the bottle...

Homework Statement "A Daredevil plans to bungee-jump from a hot-air balloon 65.0 m above a carnival midway. He will use a uniform elastic cord, tied to a harness around his body, to stop his fall at a point 10.0 m above the ground. Model his body as a particle and the cord as having...

"Pure" Mathematics vs. Applied Math vs. Discrete Math I'm approaching the point where I'm going to have to decide which four-year university I'm going to finish my Bachelor's degree at. I'm pretty much restricted to colleges in Georgia, and I am primarily looking at Georgia State and Georgia...

Homework Statement A 0.140-kg baseball traveling 45.0 m/s strikes the catcher's mitt, which, in bringing the ball to rest, recoils backward 11.0 cm. What was the average force applied by the ball on the glove? Homework Equations F=ma ? The Attempt at a Solution It is the whole...

Homework Statement A net force of 4N to the right is applied to a box of 6kg while moving it a distance of 3m to the right. (1)How much work is done on the box? (2)What if the force is applied at a 30 degree angle above horizontal? Homework Equations (1) W=Fdcos(angle) (2)...

Hello everyone, I just discovered these forums and love them to death. Anyway, I was hoping you could all help me on something. The age-old BS or BA question. I am currently "attending" a college's online degree program for a Bachelor of Science degree with a concentration in applied...

Just wondering if the Betz limit is applicable to hydro turbines or if there is some analogous limit for hydro turbines?

Homework Statement There are two short questions I'm absolutely stumped by. And I can't even find a way to work backwards from the answer to understand them. Please help if you can, these two questions are driving me nuts ;__; Question 1) by applying a force you accelerate a ball upwards...

Homework Statement Not an actual problem, but to help solve my homework, would cos(A+B+C)= CosACosBCosC-SinASinBSinC (Cos(x+y)=cosxcoxy-sinxsiny) I was unsure if this can be applied to multiple digits or only 2. I know I could plug in numbers to test, but I was wondering about...

Homework Statement Two blocks connected by a string are pulled across a rough horizontal surface by a force applied to one of the blocks. The acceleration of gravity is 9.8 m/s2 . 1st block = 2 kg 2nd block = 8 kg Force on second block at 52◦ μ = 0.29 [ 2kg ]-------[ 8kg ]/ 52 degrees If each...

Homework Statement Given I = Io (exp (V/Vo) -1), Io = 1 A, Vo = 1 V, R = 1 ohm (i) Find R when V = 5 Volt (ii) Find R when V = 10 Volt (iii) Plot the graph of V vs I (iv) Explain why the Ohm’s law can’t be applied Homework Equations V = I*R The Attempt at a Solution (i)...

Homework Statement How would you solve the one-dimensional Poisson's equation: $\nabla ^2 \phi = \frac{\rho}{\epsilon_0}$ Using Fourier Transforms? $\phi (x) = \int ^{+\infty}_{-\infty} G(k) e^{-i k x} dk$ $G(k) = \int^{+\infty}_{-\infty} \phi (x) dx$ I've been trying to understand Fourier...

so basically a wave particle duality principle state that sometimes a "matter" would behave as a particle and a wave a another time. The was to reconcile this is through QM's statistical interpretation and the math construct is very obvious that such proposed matter is indeed a wave-particle in...

Homework Statement Determine a) the capacitance and b) the maximum potential difference that can be applied to a Teflon-filled parallel-plate capacitor having a plate area of 1.75 cm^2 and plate separation of .04 mm. Homework Equations A=.0175 d=.04e-3 k=2.1 C=k(epsilon-not)(A/d)...

Homework Statement Hi, I found the following example in a high school physics book about electrical circuits. There's something about the example that I don't get, so I hope you can help me out. I give you the example text and the solution, and then I explain what I don't understand...

Homework Statement Use Green's theorem to compute the area of one petal of the 28-leafed rose defined by r = 5sin(14 \theta) Homework Equations A = \frac{1}{2} \int_c{x dy - y dx} \int \int_c{M_x + N_y}dx dy The Attempt at a Solution I'm really more confused about just what to do...

Homework Statement I am having some trouble with the nodal analysis algorithm explained in this web page http://www.swarthmore.edu/NatSci/echeeve1/Ref/mna/MNA3.html My electrical circuits knowledge is very basic, and I need to get the equivalent resistance of a circuit for a non related...

http://www.appliednutritionalresearch.com/ Sounds to good to be true. Dear Belly Fat Sufferer, How would you like to melt away as much as 1 inch of stubborn belly fat every 7 days? Yes, that's right. Burn off 1 full inch of good-for-nothing belly fat every single week. Sound too good to be...

applied physics and cs double major or applied physics/CE minor? according to my advisor, there isn't a whole lot of career choices as Undergrad applied physics major. its either technician, part salesman... or go into grad school... i want to go to grad school in the future but i want to work...

A weight of mass 12.5 Kg hangs from very light pulleys as shown in fig. What force must be applied to the rope so that the mass stays at rest. M=12.5 Kg W=mg a=g=9/8 m/s^2 M=12.5 Kg W = mg = 12.5 x 9.8 = 122.5 N I've done this much but I have no clue what to do now. Can someone please...

What fields can an applied mathematician work in (other than in academia)? Assume that he gets a Ph. D.. Do private sector companies hire applied mathematicians? To do what kind of things?

Simple question: Say I get an undergraduate degree in applied mathematics, and I take a lot of engineering electives during this time. How likely is it that I would be able to go to graduate school for engineering? Also, are there areas of study (in mathematics) that are very intimately tied...

Does anyone know of an online Masters Degree in Engineering Physics or Applied Physics? I have searched around, but to my surprise, did not find much.

If i hit a gear/wheel with a certain force how do i calculate how the resultent rpm? Theres a picture attached to help with my explanation. thanks, Tom

1. Hello. I am doing a practical assignment which involves a pully system with different masses on each side attached to a string. I have figured out acceleration via a = 2x/t^2 and then Force applied by F = (.42-.38)*0.286 which gives me 0.011N. However when I graph the final solution (I have...

Dear PF members, I am about to begin my junior year as a math major, and I feel like I made one observation. That is, if I want to study math at advanced level, I need to choose either pure or applied mathematics. I have also noticed that if I get a title of "mathematician," that implicitly...

I have taken applied linear algebra http://courses.illinois.edu/cis/2009/fall/schedule/MATH/415.html?skinId=2169" and didn't learn anything really since i never went to class (yeah yeah yeah I know). I am taking intro to abstract algebra 1 and 2 this year. My friend took the abstract version...

I was thinking about postponing my graduation one year to get a BS in Applied Mathematics in addition to my Physics BS. My goal is to get into a top Medical Physics program. I am currently a member of a Medical Physics research group here at my school and have impressed my advisor. He thinks...

I'm graduating with a B.S. in physics and I will soon be starting a Ph.D. program in nanoscale science, which is essentially an applied physics program. I chose this program because my undergraduate research was focused in this area and I've really enjoyed it. However, I'm wondering if my...

I hope I am asking this in the right forum. Lets say you have a simple hand pump, similar to a bicycle pump, and you exert X amount of force on the handle. How do you calculate the resulting air pressure it creates out of the small valve at the end? Obviously friction between the O-ring...

I'm new to electrical engineering so this is probably a stupid question. But after reading about piezo-electricity, can it be applied to large structures, like a bridge, to generate electricity when traffic travels over it ?

I have experimented the converse of Newton's law of cooling, i.e. the rate of heating of a cold body is directly proportional to the deficient temperature when the difference in temperatures is small and the states of the system remain the same.

Homework Statement The lever BCD is hinged at C and is attached to a control rod at B. Determine the maximum force \vec{P} which can be safely applied at D if the maximum allowable value of the reaction at C is 500 N. Here is a picture of the problem. It is number 4.20. "[URL...

which one is more marketable/versatile? can you get a job from just getting a bachelor's in either one of them? gracias

Homework Statement A worker drags a crate across a factoryt floor by pulling on a rope tied to the crate. The worker exerts a force of 450 N on the rope, which is inclined 38 degrees to the horizontal, and the floor exerts a horizontal frictional force on 125 N that opposes the motion. You...