What is Peak: Definition and 252 Discussions

Healthpeak Properties, Inc. is a real estate investment trust that invests in real estate related to the healthcare industry including senior housing, life science, and medical offices. It is organized in Maryland and headquartered in Denver, Colorado with offices in Nashville and San Francisco. As of December 31, 2019, the company owned interests in 617 properties.

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  1. C

    Number of interference fringes visible in the central diffraction peak

    Homework Statement How many interference fringes are visible in the central diffraction peak if the ratio of slit separation to slit width is 3.125? Homework Equations d*sin(θ) = m*λ for interference maxima with slit separation d, maxima are at m = 0, 1, 2, 3 ... a*sin(θ) = m*λ for...
  2. L

    How Do You Calculate Peak Velocity in Trapezoidal Motion Profiles?

    I am trying to program some motion control devices which have trapezoidal motion profiles to define a move. I can define the slewing(peak) velocity, accel/decel rates and distance to travel, the the hardware moves a motor the appropriate distance with the parameters given. I need to be able...
  3. M

    Why does an object fall in the same time as it takes to reach a peak

    Homework Statement A kangaroo jumps a height of 2.8m. How long was it in the air? Homework Equations v=v0+at x=x0+v0t+(1/2)at^2 v^2=v0^2+2aΔx The Attempt at a Solution -2.8 = -4.9t^2 .57 = t^2 t = .76 s (down) 0 = v0^2+2(9.8)(2.8) 54.88 = v0^2 v0 = 7.408 0 = 7.408-9.8t t = .76 (up) t...
  4. P

    Finding peak Emf, pretty quick answer

    I attached the link to the problem. Shouldn't the Vlmax be 330V? I tried entering that and it wasn't accepting my answer.
  5. C

    Chromatography - How does flow rate affect peak width?

    Today in a lecture on chromatography the lecturer gave an explanation which seems pure ******** to me. The example she used was a handful of solutes, each taking a different path through the stationary phase, obviously some paths will be longer than others and thus each solute will have a...
  6. S

    Any truth to Peak Oil being a myth?

    Is there any truth to Peak Oil being a myth? Skeptics are claiming that oil is not made from previously living matter and therefore shouldn’t be considered a fossil fuel. They mention the deepest fossils ever discovered have been no more than 16,000 feet yet we drill for oil in depths much...
  7. T

    Help- using NiMh batteries for high load applications (150A peak)

    Greetings, I’m constructing a machine that involves a linear actuator powered by a 12vdc motor. My linear actuator has a foot that crushes an aluminum soda can until the motor’s torque maxes out and it stalls. The machine is intermittent duty at about 6 seconds of use every 3 minutes. My machine...
  8. K

    Why Does Peak Intensity Not Double in a Double Slit Experiment?

    Hey guys, I've just got a couple of questions about this prelab I need to do for the Double Slit experiment. And just to make sure this is clear (I have no idea whether the method used in this experiment is normal) we have a double slit and a slit blocker. The slit blocker is after the...
  9. P

    Negative absorption peak in FTIR

    What does it mean if one found negative absorption in uv-vis absorption graph?
  10. D

    AC Voltage and current, amplitude, rms, peak value

    General enquiries (template may not be suitable) - When the question provides value of AC voltage amplitude, is this the same value of peak voltage? - Also, in current waveform, when do we use peak current and rms current? - In ohm's law equations we use rms current, so in the current...
  11. Z

    Z ~ 1.6; star formation and angular diameter distance peak coincidence?

    Is there any reason to expect both the star formation history and the angular diameter distance to peak at around the same value (redshift ~ 1.6)?
  12. Saladsamurai

    Gas Chromatography: Stray Peak and Beginner's Questions

    Hey guys! It seems that there are a few users here, so I will post the same question I posted over at chromforum.org: -------------------------------------------------- Hello All! :smile: I am quite new here and to GC in general, so I hope you can bear with me. I will try to keep this...
  13. F

    Stupidity at its peak find the mass

    Homework Statement A spring is hung from a ceiling, and an object attached to its lower end stretches the spring by a distance of 5.00 cm from its unstretched position when the system is in equilibrium. If the spring constant is 43.2 N/m, determine the mass of the object. (answer in kg)...
  14. H

    What is the 'first order' diffraction peak?

    Could someone explain what the 'first order' diffraction peak is?
  15. L

    Adding Voltages: Calculate Peak Value of U3

    Homework Statement Hi, Two given Voltages: U1(t)= 40V * cos(wt) U2(t)= 120V * sin(wt) wheres w means omega. Now I have to sum them up to U3= U1+U2 and calculate the peak value of U3. 2. The attempt at a solution My problem is, I'm not sure if the following is...
  16. E

    Calculating Peak Velocity of a Magnet Under Continuous Magnetic Force

    Homework Statement Imagine you have a magnet (Henceforth named MagX) which weighs .03lbs, and it is being continuously pushed by another magnet's polar likes (Henceforth named MagY) with a force of 3 PSI. Is it possible to find the peak velocity of MagX, assuming that MagY stays at a constant...
  17. D

    Estimation of dominant peak in frequency domain

    Homework Statement I have to develop an algorithm that can predict dominant peaks in the frequency domain, given a set of data in the time domain. I used FFT to check the frequency domain but apparently there are packet losses and irregular sampling intervals so FFT won't work. 2. The...
  18. T

    Finding the Peak Value of Current: A Puzzling Solution

    Homework Statement Determine the peak value of current of: \underline{I} = \frac{120\angle0^0}{10+j10} The Attempt at a Solution I change this into polar form and got: \underline{I} = 12.0 \angle -45^0 Therefore, the peak value of the current should be 12.0 A. However, the...
  19. N

    What is more damaging: average power or peak power of a pulsed laser?

    When we are considering the how much optical power a component/pin detector can withstand, are we more concerned about keeping an eye on the peak power or can we ignore the peak power so long as the average power is below some threshold value?
  20. T

    X-Ray Peak Energy: What Determines It?

    Excuse the obvious question. I feel like I should have picked this up somewhere along the way, but the more I think about it the more unsure I am. My question is: In a gamma spectrum, what determines the energy of an X-Ray peak. What causes it?
  21. E

    Peak Detection in ICP signal

    Homework Statement I have the task of finding the first peak (percussion peak) per each period of a ICP signal. I was told to filter the signal to get rid of some noise and a dc offset, find the percussion peak indicies and then plot those back onto the original signal. I am unable to only...
  22. M

    Step response and peak response of a transfer function

    Homework Statement The open loop transfer function to a unity negative feedback system is given as: G(s)=50/s(s+10) Homework Equations Unity feedback is used in this problem, and the system input is a step function. Y(s)=50/s(s^2+10s+50) The Attempt at a Solution I have...
  23. J

    Peak of multiple sine waves/functions

    I'm trying to get a method to determine the time, t, when two sine waves added together peak, an exact solution. For instance, F(t) = sin(w1*t) + sin(w2*t) Obviously this is not really mathematically straightforward because there are infinitely many solution based on the nature of the sine...
  24. S

    The first acoustic peak in CMB

    Dear all, Searching proofs for Dark energy, people always mention "the first acoustic peak in CMB". can anyone tell me what exactly is that? how long did we expect it to be and now -having Dark energy- how long do we see it? can anyone help me please?
  25. S

    Communication Theory - Peak Envelope Power

    Homework Statement Peak envelope detector defined as A2MAX, which is the square of AM signal's envelope. AM radio transmitter rated for 4[kW] peak envelope power. Find max value of modulation index (mu) for tone modulation when average transmitted power (PT) is 1[kW]. Homework Equations -...
  26. E

    Bridge Full Wave Rectifier Peak Voltages and Capacitcane Value

    Note: This is not a homework or coursework, simply revision for an exam. Thanks Homework Statement [PLAIN]http://img194.imageshack.us/img194/223/question2z.jpg Homework Equations Peak voltage = RMS voltage x root2 r = T/(2RlC) T = 1/f The Attempt at a Solution part d)...
  27. S

    Many car calculations, including torque and peak power

    I need to calculate a number of things: 1. the torque of the wheels. 2. The peak power, i am assuming it means of the wheels 3. the work done. i know: total mass (car+wheel): 680kg. mass of wheel: 22.67kg there are 4 wheels. radius of each wheel = .203m time: 8s. acceleration: 26.82m/s^2...
  28. J

    Peak Voltage vs magnet position in an A.C generator

    I have a question about a magnets position over a coil of wire in an A.C generator. Is the voltage in the coil at Peak as long as its covered by the magnet? and then the voltage starts to decrease to 0 volts as the magnet starts uncovering the coil until the magnet totally uncovers the coil and...
  29. M

    How many windings needed to generate Peak emf

    Homework Statement A simple generator has a coil with dimensions 1.0 cm x 1.0 cm which is rotated at 60 Hz in 1.0 T magnetic field. How many windings (turns of wire) are needed to generate a peak emf of 120 Volts ? Homework Equations 1. emf E = - d (magnetic flux) / dt 2. magnetic flux = (B...
  30. A

    Why Are FFT Acceleration Peaks in My Data Abnormally High?

    I have collected time-domain acceleration signals from the test rig through an accelerometer. Voltage signals are scaled to acceleration signals based on voltage sensitivity of accelerometer. Please refer the link given at the last to get the link for PDF attachment to see the time domain...
  31. A

    What is the peak to peak of a 2.00 cm diameter coil with 4000 turns at 1000 Hz?

    I am trying to figure out what the peak to peak of 2.00 cm diameter coil with 4000 turns at a frequency of 1000 Hz. However, I know that more turns will release more emf. Number of turns * Cross sectional Area of one coil = Number of turns * cross-sectional area of another coil. However, I am...
  32. T

    Peak Torque Calculation for Twin T3/T4 Turbos in 2.0L Camry Motor

    Herro guys, I'm trying to build a motor for shop class (from scratch really, new manifolds, ect :o), I'm only 15 so please take it easy on me :redface: Anyways, I've been trying to calculate my ideal runner length/diameter and stufflets for the intake manifold design. I've got a question...
  33. P

    Calculating Peak Charge and Total Energy

    LC circuit! Homework Statement A 550 microfarad capacitor is connected across a 1.35 H inductor. At a certain time, the charge on the capacitor is zero and the current is 0.362 A. How much later will the capacitor charge reach its peak? What's the total energy in the circuit? What is...
  34. P

    Max Temperature Peak: Global vs Local Energy Source

    Ok, so say I have a system at a global temperature, I add an energy source (laser in this case) and it heats the system in a localized area. This leads to a maximum temperature peak in the system. Then you can get out a change in temperature from this maximum to the global. OK, now my...
  35. F

    Area under Gaussian peak by easy measurements

    First I try to find a way of finding area under Gaussian peak by using simple means. Questions at bottom of post. This concerns peaks with Gaussian distribution, eg. peaks in a chromatogram in some chemical analysis. The Gaussian distribution is f(x) = \frac{1}{\sigma...
  36. apeiron

    News When will the world reach peak fossil fuel production?

    Steve Mohr of Australia's Newcastle University has modeled the Earth's fossil fuel reserves and come up with this massive study (warning: 13mb). PROJECTION OF WORLD FOSSIL FUEL PRODUCTION WITH SUPPLY AND DEMAND INTERACTIONS...
  37. S

    Peak of Human Evolution: Can We Evolve Further?

    Do you guys think we reached the peak of our evolution? Is there any higher advanced form we can evolve into as time passes, or are we really at our peak? Natural selection doesn't appear to take place for humans anymore, since the average human isn't being weeded out by some physical defect.
  38. P

    Can anyone help with peak summation?

    Hi there I have read that the area of a peak can be approximated by summing the recorded peak intensities. I can't see how this works? If you add all the peak intensities together is not just the magnitude of their sum and not the area of the surface the peak overlays? Someone told me that...
  39. P

    Measuring Pi/6 for Peak Height Accuracy: +_20 or +_10 m

    Homework Statement A hiker is at the base of a mountain and can get the horizantal distance between himself and the peak through GPS device:750 m. And suppose we know the actual measurements: It's a right triangle with an opposite= 750 tan (pi/6) = 433 m , an adjacent= 750 m, and a...
  40. A

    Boosting pwm peak to peak voltage

    Hi. I am working on a circuit to control a dc motor using a pwm signal. The problem is that the pwm source (a LabJack UE9 DAQ) doesn't send a ttl signal, but a 0-3.5 volt signal (3.5 peak to peak). The power transistor needs about 5 volts to open completely between source and drain. A...
  41. F

    Efficient Conversion of 1 V peak AC to DC

    Hey guys, I am new here and had a question. I currently have a 1 V peak (2 Vpp) AC wave coming into my system and I want to find the most efficient way to convert it into DC. A simple bridge wouldn't work for me because too much of the voltage would be dropped across the diodes. The system...
  42. K

    Peak detection using MATLAB (signal processing)

    I'm doing signal processing using MATLAB. But facing problem when doing Peak Detection. This is the signal that I used for the processing: This is what i wish to do: a) the horizontal line is the threshold point and b) the circle is the peak detection Can anyone help me...
  43. P

    What is the RMS to Peak Current Ratio for a crossword puzzle?

    4clue
  44. D

    Calculating Peak Displacement of Sinusoidal Motion

    I am looking at sinusoidal motion (shaker tables) and am trying to calculate peak displacement given RMS acceleration. I can easily find the peak displacement using: a_{pk} = 4\pi^2f^2x_{pk} a_{rms} = 0.707a_{pk} as... x_{pk} = \frac{a_{rms}}{0.707\pi^2f^24} My...
  45. L

    Gamma spectrum Na-22: Peak origins

    Hey, For my first post here, I had a question about the gamma spectrum of Na-22. I measured the gamma spectrum of Na-22 with a Ge-spectrometer. Using Genie-2000 software I saw two peaks in the spectrum, 1274 keV (peaksurface 3981±1,74%) and 511 keV (peaksurface 25494±0,68%). (Horizontal...
  46. M

    A Bit of Help With Peak Current Flowing with Inductor Please

    Hi can somebody help me with part B of this question please? :) I already did part a) and I found the peak current to be 31.1 mA, and the power rating required to be 4.84 W. For part B I know the current for inductance is I=(1/L)\intVdt and I know V=V0sin(wt), however with only this...
  47. K

    Peak detector Questionimportant please

    This is an assignment I was told to solve ..the PDF file is attached..I already reached to the derivation of finding the ratios for the full wave recitifier.. Where I got to find that the gain is equal to = 1 . and that because of that R1 = R3..and R2 doesn't make a difference.. However I...
  48. D

    Find the Peak of a Curve Defined by Points

    I have a curve defined by some points. These points represent the pixel brightness on the image sensor For example get these values: 5 14 60 111 100 37 Where is the brightness peak? Somewhere between pixel 4 and 5... ~4,3 Is there a method to determine this? Something with a name or...
  49. G

    Fortran Find peak in the historgram data file - FORTRAN

    Hello guys, I have a file with X Y values (separated by space) I want to scan the data to find the PEAK in the file. (It will probably be a lowest Y point...) How do I do this is Fortran? Thank you, Alexander
  50. R

    If a skier jumps of the peak of a straight slope, when does it intersect?

    This is the only question in my physics section of projectiles I am having trouble with (This is ranked as the hardest question in this section of my text, please cut me some slack :P), because I have no idea how I would go about finding the intersection point of the skier with the slope. The...
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