Scale Definition and 721 Threads

Hi everybody! I hope somebody can help me... We are using a plate orifice to measure water feed to a reboiler; the pipeline size is 1" and the orifice was initially designed for 0-1800 kg/h of water, with a maximum pressure drop of 1000 mm water. As water feed doubles may I simply change...

Connected by a string to a scale is an object and when suspended in air, the scale reads 200 N. The scale reads 150 N when the object is suspended in water (d = 1000 kg/m^3). What does the scale read (in N) when the object is suspended in oil having a density of 800 kg/m^3? I determined that...

Apparently extensive music theory of European, Hellenistic and ancient world is beyond my current depth. However, it seems reasonable to expect that western musical notes have a substantive physical basis in addition to relative consistency and obvious physical parameters. Obvious...

This confirms a beautiful result of Modesto's earlier paper, that LQG seems to coincide with two other very different types of quantum geometry/gravity on the business of dimensionality declining continuously with scale. Fractal-like microstructure of space time. As scale decreases the observed...

I'm struggling to get my mind around this concept: If you have a spring with a known spring constant, and you put a specific mass on it, compress it a certain distance and then release it, can you predict the distance it will travel with the information supplied? Or in other words, can I...

Hi , Please help me to solve following problem. If 20 KJ are added to a carnot cycle at a temperature 100 degree Celsius and 14.6 KJ are rejected at 0 degree Celsius,determine the location of absolute zero on celsius scale? Ans -270.16 C Please tell me how to solve it Thanks in...

How do you work out the largest angular scale to which it is sensitive and the field-of-view and what frequency range it can be used?

Hello All, I am working on a program that produces plots that use a logarithmic scale on the X-Axis (for showing decade frequency ranges). The Y-axis can have any arbitrary value and I'm not thinking about that at this point, but here is my question. Say, for simplicity that every Y-value...

I have a question concerning magnets. Lets say i have 2 magnets each wieghing 1 gram each sitting on a scale. The scale reads 2 grams. What if i was able to stack the magnets by lining up the same poles so they repel each other and the magnet on top was floating over the magnet on the bottom...

Hi, I have a graph with a frequency on the x-axis and power density on the y axis. Both scales are logarithmic, and the graph shows a straight line between the points (110Hz, 0.001V^2/Hz) and (200Hz, 0.004V^2/Hz). I need to work out the area under this portion of the graph as it relates to...

how "large scale" is plasma physics I'm a physics undergrad right now, and I'm trying to pick out classes I want to take to get a better idea of what I'd like to do in grad school. I've wanted to work on fusion/plasma physics for a long time, and right now I'm reading a book on the history of...

Homework Statement A 192 lb person stands on a scale in an elevator. What does the scale read a. When the elevator is at rest. b. when the elevator is accelerating up at 4ft/sec^2 c. when elevator is accelerating down at 3ft/sec^2 Homework Equations The Attempt at a Solution...

Einstein's remainder encodes (= formulates) a universal energy background as mass, in terms of a limit for this energy in discrete terms; the limit represents a bound for the other two components, the e and u that modulate spacetime M; time is then generated by a linear transform of these...

Homework Statement Calculate the one temperature at which Fahrenheit and Celsius thermometers agree with each other. Homework Equations TF = TC * (9/5) + 32°C TC = ( TF + 32 ) * (5/9) TK = TC + 273.15 The Attempt at a Solution *Shrug* I can't even understand how to set it up... 4. The...

I am having a lot of trouble starting the following problem. Any ideas? Thanks a lot for helping! Derive from first principles, the diffusion time for particles traveling at speed v in a two dimensional (x,y) space to reach a distance R from their release point if the scatterers have a...

Homework Statement The figures depict situations where a person is standing on a scale in eight identical elevators. Each person weighs 600 N when the elevators are stationary. Each elevator now moves (accelerates) according to the specified arrow that is drawn next to it. In all cases where...

Why we are searching quantum gravity effect at the Planck scale? The question seems very stupid (and may be) but let me explain. I define a quantum object when his action is of the order of Planck constant \bar h. namely A~E \delta t~\bar h. So if i take a small amount of energy E i can take...

a 71 kg man is standing in an elevator on a scale. the elevator is traveling up with an acceleration of 3 m/s^2. what does the scale read the weight of the man as? thanks guys!

Jasmine has a mass of 7 kg. He stands on a scale in an elevator that is accelerating downward at 4.9 m/sec ^2 . What force does the scale display in Newtons?Thank you for your help! :] F = ma i get 34.3 what is the unit i attach it to?

How do Planck's photon theories relate to the belief that all forces may be unified at high speeds? I understand that light waves can act as particles, and particles can act as light waves. Waves/particles emit energy. And Planck's scale is believed to be around the length of convergence of...

A demented scientist creates a new temperature scale, the "Z scale." He decides to call the boiling point of nitrogen 0 Z and the melting point of steel 1000 Z. What is the boiling point of water on the Z scale? Convert 200 Z to the Celsius scale. Convert 200Z to the Kelvin scale...

I did an experiment where i measured the weight (in Newtons) of three objects on a spring scale. Then, i measured the weight (in Newtons) of the three objects on a spring scale while the objects were submerged underwater. How would i calculate the volume and buoyant force?

Homework Statement The scale transformation is a continuous transformation which acts on a function f(x) according to D_{s}f(x) = f(sx) where s is a real number. There is a continuous family of such transformations, including the identity transformation corresponding to s = 1...

What is the force that the scale reads (the "weight") as the mass slides down the slo There is an object on top of a wedge sitting on a scale. When the object is released, the object slides down the slope of the wedge. What is the force that the scale reads (the "weight") as the mass slides...

1.Hi, I need to create a scale drawing of a hot air balloon at which we are creating, it is odd because I don't know how big it's going to be and have no idea how to make a scale drawing, the balloon does not need a basket but will have mints attached to it (as passengers) to see if it can hold...

Is the concept the same? If I am able to bench press a maximum of 200lbs, and I were to push with full force a scale bolted in a stationary position at the weakest point of my bench press motion, would the scale read 200lbs?

PLEASE HELP ! THANK YOU (: 1. My teacher gave us a drawing with 4 vectors on it. Vector A = 130 N and is at a 20 degree angle. Vector B = 100 N and is at a 70 degree angle. Vector C = 70 N and is on the x-axis. Vector D = 50 N and is at a 10 degree angle. Given this picture we are told to...

Where is the line between these two subjects. I understand that I may be asking an unanswerable and highly studied question. I understand that in the quantum world everything is based on probability. But when looking at things at our perspective we never see this probability. Everything is...

hello.i'm looking at data for gyroscopes, because i need to find one that's very accurate to within a degree. there are two items that might describe it the way i see it: bias or scale factor... I'm not sure which one would tell me what I need to know. I've tried to Google for definitions, but...

Which one would you pick for your scale and why? Have a vote (mechanical=manual in poll) . The question boils down to which is more accurate?

You are given 12 coins that are identical except that they are numbered and you are told that one coin is odd-weighted, being either slightly lighter or slightly heavier than anyone of the remaining eleven. You are given a worktable and a balance beam scale. You may use the scale three times...

Do cosmologists know what is the current value of the scale factor? I know we have a current value for the Hubble constant H, and I know H=a'/a. But what about the value of a? Thanks!

One of the intriging things to me about Causal Dymanical Triangulations is the implication of a fractal spacetime structure at small scales. Hunting around for related theories I came across Laurent Nottale's Scale Relativity theory. References to the theory after the late 90s are hard to...

Homework Statement Determine the vector that must be added to the sum of A + B in the given attachment to give a resultant displacement of (a) O and (b) 4.0 km [W]. In case anyone can't view the attachment, |A| is 5.1 km in length, 38 degrees N of E, and |B| is 6.8 km in length, 19 degrees E...

What happens to the Planck length due to the expansion? Does it grow with the scale factor?

If you stand on a bathroom scale, spring inside compresses .6mm, and tells your weight is 710 N. Now if you jump on the scale from a height of 1m, what does the read at it's peak? This is what I tried to do: I used Hooke's law: F_{}s= k*x and solved for the k which is spring constant...

Homework Statement You are standing on scales which read weight in Newtons. A 0.50 kg ball is dropped from a height of 1 m into your hands. Your hands drop from chest level to waist level during the catch, a distance of about 25 cm. Your mass is 62 kg. Assuming that you decelerate the ball...

Homework Statement You are standing on scales which read weight in Newtons. A 0.50 kg ball is dropped from a height of 1 m into your hands. Your hands drop from chest level to waist level during the catch, a distance of about 25 cm. Your mass is 62 kg. Assuming that you decelerate the ball...

Hey! I am having real issues finding a good scale for a graph I am drawing. Most of the data is around 0.001 to 0.005 but then there are a few that are all way up at 0.123. I am really having trouble finding a scale for all of this. I can find a scale, but not without having to squash half of...

Does anyone know, when an electron in an atom is exited by absorbing a photon, how long does it take for the electron to absorb the entire energy of the photon? Does the time scale depend on the energy level? Thanks!

Homework Statement A uniform flexible rope is suspended above a scale, with the bottom of the rope just touching the scale (gravity points downward). The rope has a length L and a total mass of M. The mass is uniformly distributed along it's length. The rope is released. After a length x<L...

If it was possible to build: A vertically mounted fly wheel - over 2 miles in diameter, the largest moving mass ever created by man. (half above ground, half below ground) Would it work? Would it continue to spin any longer because of its mass? Could it then be used to generate...

Hi, I am in my second astronomy course and just received a twenty question take home final exam, and I am having trouble with two of the questions. In 2004 astronomers reported finding evidence that certain white dwarfs are 12.1 +- 0.9 billion years old. Assuming an inflationary model in...

Hello I have a Gaussian Pulse in the frequency domain and transform it with the IFFT into the time-domain. My Problem is now that I can't figure out a way to give the sample points the correct time-scale. What kind of formula do I need to use? Thank You for helping me!

Referring to Nottale's Theory of Scale Relativity (http://luth.obspm.fr/~luthier/nottale/arIJMP2.pdf), I've been reading an awful lot about this theory and it seems to present, in my opinion, the best candidate for a unifaction of quantum mechanics and general relativity. The postulates of...

[SOLVED] Lift, reading on the scale Homework Statement Mandy stands on a weighing scale inside a lift (elevator) that accelerates vertically upwards. The forces on Mandy are her weight W and the reaction force from the scale R. The reading of the scale is A. R + W. B. W. C. R. D. R – W. The...

I am working on a project to make a large scale electromagnet and try as I might I just can't get past one part. Getting it to magnetize. I have built the unit primarily out of a 5 ft rod of threaded steel (I will be replacing it with iron I just happened to have the rod already) wrapped in...

You hold in the palm of your hand a classical particle with momentum P = (E,cp_{x},cp_{y}, cp_{up}) where cp_{up}=0 . Placing it gently on a scale you ask, what part of P = (E,cp_{x},cp_{y}, cp_{up}) is pushing down on the scale?

I brought an old analytical balance into my kid's elementary school for "Science Day", and I explained the difference in using a scale (measures weight) and the balance (measures mass). I told them that although objects on a scale will weigh different amounts depending on if they are weighed...

Is there a good site somewhere on the net with a to scale animation/simulation of the solar system? I haven't seen anything yet. Thanks in advance.