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. A

    How to determine relative 2theta peak in XRD analysis?

    Hope somebody can help me. I`m currently doing analysis of determining single crystal of Zr2Cu on a surface of bulk metal. Through XRD, i determine the peak and compared it with data from JCPDS card. My problem is I don`t know the correct way to compare the theoritical 2theta peak(from...
  2. R

    Find peak voltage across capacitor

    Hi everyone! I hope you people can help me out at a problem I am stuck with: Homework Statement Find the peak voltage across the capacitor "C" All variables given and an image of the circuit are: http://img36.imageshack.us/img36/580/photo2fsc.jpg The circuit is connected to...
  3. D

    Why Is the Acceleration Not Zero at the Highest Point of a Thrown Baseball?

    A baseball is thrown upwards. What is the acceleration at the highest point? i thought the acceleration would be 0 since velocity at the highest point is 0 and the derivative of velocity is acceleration. Since velocity is not changing, shouldn't acceleration be 0? However the answer is...
  4. T

    The first CMB peak - Flat Universe

    The size of bouncing lumps of charged particles, DM and photons in the primordial universe is supposed to be around 220,000 lyr (= sound horizon since the acoustic speed is approx 0.6c). If we then calculate the angle A subtended at Earth by a lump of this size W, some 13.8 Glyr away D (back at...
  5. J

    Calculating Peak Force of Falling Object with Load Cell and Steel Cable

    I'm running an experiment where I drop a mass (99.7kg) a distance of 1.8m. The load is suspended from a very rigid structure through a steel cable. I currently have a load cell in series with the cable and mass. I acquire data at 1000Hz and my load cell tells me I have a peak force of about...
  6. P

    Estimating the peak electric field

    Homework Statement Find the peak electric field inside a 690 W microwave oven under the simplifying approximation that the microwaves propagate as a plane wave through the oven 's 775 cm^2 cross-sectional area. The Attempt at a Solution ave, intensity (s) = ave power (p)/ 4*pie*r^2...
  7. B

    Calculating Peak Current in an LRC Series Circuit

    Homework Statement An LRC series circuit with R = 200!, L = 32mH, and C = 2.5μF is powered by an ac voltage source of peak voltageV0 = 200V and frequency f = 770Hz. Determine the peak current that flows in this circuit. Homework Equations V= IR -L dI/dT +Q/C = 0 w = 2 pi f...
  8. M

    Reason for dividing peak value by sq. root 2 to get RMS

    I NEED TO GET A DERIVATION SO THAT I CAN MATHEMATICALLY UNDERSTAND WHY: The peak voltage or current is divided by square root 2 to get the root mean square value.please i need a simple derivation just to understand,i will be very greatful for ur consideration.thankyou.
  9. M

    Mean of data points or mean of peak

    I have (what may be) a simple statistics question... Say I perform an experiment, and I make a number measurements over a given interval (e.g t=0s to t = 10s, every 1s), and I perform this experiment many times. Now, let's say I make a plot of data vs. time, and I want to find when the data...
  10. M

    Is Magnitude in Polar Form Always Representative of Peak Voltage?

    Homework Statement I am confused. My thinking was if a voltage source is given in polar form with the magnitude and angle eg. (10 L0o)then it is Vpk and if only magnitude is given then it is Vrms. Is it right. I am really confused. Homework Equations The Attempt at a Solution I...
  11. K

    Designing Voltage Source Inverters for 50V Output Peak Voltage

    Hello every1 I hav a basic question bout Design of inverters(Voltage source inverters). Wel Actually what does designing mean? I hav to design a inverter whose output Peak voltage is 50v. The input DC voltage wil b around 55V.I'm using single phase full bridge inverter And i'll b using R...
  12. C

    How Does Magnetic Flux and Peak EMF Relate in a Solenoid-Coil System?

    A coil is located at the center of a long solenoid of radius R = 15cm which has 5x10^7 turns per meter and carries a current I = 16A. The coil is coaxial with the solenoid and consists of 5 turns of wire each in the shape of a square of length a = 5cm on each side.What is the magnetic flux...
  13. A

    Peak copper (and peak other metals)?

    http://www.treehugger.com/files/2006/04/peak_copper.php http://www.thenational.ae/article/20080807/FOREIGN/629722880/1013/ART&Profile=1013 Any truth to this, or is this debunkable?
  14. S

    Burst / Peak : statistics and metrics

    Hi all, I'm very new to this forum and I hope my question isn't too trivial. My problem: I need to analyze some numeric data. I have a sample every second in 17 series. So every second I get 17 samples of data, most of the higher series (10-17) being zero all the time. I now want to...
  15. A

    Jobs After Peak Oil: What to Consider | Physics Forums

    Maybe you've heard about Hubbert peak aka Peak Oil . Otherwise, this threads should be useful for you: https://www.physicsforums.com/showthread.php?t=172175&highlight=hubbert https://www.physicsforums.com/showthread.php?t=184372&highlight=hubbert The global economy it's entirely oil...
  16. Q

    Help, RLC Circuit Problem - Peak Current At Resonance

    Homework Statement A 5 Micro-F Capacitor, a 65mH Inductor, and a 10 Ohm resistor are connected in series Find the resonant frequency of this circuit. Determine the peak current at resonance, if the peak voltage is 100V Homework Equations Fr = (1/2Pi) Square Root(1/LC) I don't know...
  17. N

    Photonics - peak temperature / thermal diffusivity

    Homework Statement Estimate the peak temperature for a 1 ns versus a 1 ms optical pulse with a total energy of 1 J in a 1 cm^2 spot is incident on a sheet of metal. The metal is 20 thou ( 20 thou = 0.5 m). The metal sheet is mounted on a copper block which is held at room temperature. The...
  18. B

    Archived LC circuit and peak current

    Homework Statement An LC circuit starts at t=0 with its 2000 microF capacitor at its peak voltage of 14V. At t=35 ms the voltage has dropped to 8.5 V. a) What will be the peak current? b) At what time will the peak current occur? c) What must be the value of the inductor in the circuit?The...
  19. Z

    The peak frequency of solar radiation?

    Hey guys. The question I have to answer is What is the color of the peak frequency of solar radiation? Now is there a certain way to figure this out or...very hard to find on the internet... best zach
  20. B

    Medical Can i increase my vital capacity and peak flow

    hi, I am 21 years old 180cm tall and 73kg, I'm an ex smoker. I'm in the process of an army application but need to improve my peak flow. will increasing my vo2 max help and are there any other ways to increase peak flow.
  21. P

    How can players maintain peak performance?

    Hi all, I have this stituation. Our favourite football team normally play very well. But recently, when they attended a tournament and they lost all the games ! They even lost to a team that they had never lost before. Their form was very weak at the time. I am not sure if there is a word or...
  22. X

    Resonace frecuency and peak current

    For the circuit shown a. What is the resonance frequency? b. At resonance, what is the peak current through the circuit? http://img218.imageshack.us/img218/2971/p56dr3.png I solved for resonance frequency knowing that when Xc=XL you get a resonance frequency. my set up was 2pifL=1/(2pifC)...
  23. R

    How Do You Calculate Peak Current for a Light Bulb?

    [SOLVED] Determining Peak Current Homework Statement A light bulb uses 75 watts of power when a lamp is plugged into a wall socket (RMS voltage = 110 volts alternating at a frequency of 60 hertz) Determine the electrical resistance of the light bulb filament. Determine the peak current...
  24. F

    The party's over: peak oil has distracted us from peak helium

    :tongue2: http://www.cbc.ca/consumer/story/2007/09/26/helium-shortage.html
  25. T

    What is the Best Method to Find the Peak Point of a Quadratic Bezier Curve?

    hello i want to find the peak point of a quadratic bezier curve. one approach is finding all distance between "start point","any point on curve","end point" and then choosing then maximum distance between them. but this approach get much time when implementing on computer is there any...
  26. C

    Anyone still believe peak oil will not happen?

    About 200 days ago i made a thread on this forum about peak oil the thread was called hubbert peak. in that post i asked if you realized that peak oil was coming and got by and large a negative response. things like "no peak oil is myth" and "we will find other energy sources" i...
  27. F

    Mass spectrum-need 3 peak designations

    Homework Statement I am assigning m/z peaks on a mass spectrum, and there are 3 peaks not on the chart given by the instructor, and I was wondering if anyone can help me determined their identities. The peaks I am unsure of are found at 95 m/z, 109 m/z, and 123 m/z; I already figured out the...
  28. K

    Calculating AC Current for a 0.197 H Inductor with 166 V Peak Voltage

    Homework Statement A circuit contains only 0.197 H inductor. An AC voltage of peak value 166 V and frequency 60.5 Hz is applied to the circuit. When the voltage is 166 V, what is AC current? Answer in units of A. Homework Equations The Attempt at a Solution we know that...
  29. J

    One integral (square root and gaussian peak)

    An integral \int\limits_{-\infty}^{\infty} \sqrt{1+x^2} e^{-Ax^2+Bx} dx is the problem. Anyone knowing the solution?
  30. C

    Hubbert's Peak. The oil crash.

    In 1956, Hubbert proposed that fossil fuel production in a given region over time would follow a bell-shaped curve without giving a precise formula; he later used the Hubbert curve, the derivative of the logistic curve, for estimating future production. Hubbert assumed that after fossil fuel...
  31. T

    Peak voltage output of a generator

    Homework Statement A 400 loop circular armature coil with a diameter of 5cm rotates at 60rev/s in a uniform magnetic field of strength 1T. a) What is the peak voltage output of the generator? b) What is the RMS voltage output of the generator? The Attempt at a Solution a) My answer...
  32. P

    Finding a Good DC Peak Detection Circuit

    hi i was wondering if anyone could tell me of any good dc peak detection circuits. the voltages i am measuring are varying by one hundredth of a volt. i have been using the peak detector on the wqikipedia website but the circuit doesn't seem to store the peak voltage as the reading on the dmm...
  33. Nim

    Why is the peak frequency of the Cosmic Microwave Background 160 GHz?

    What is the peak frequency of the Cosmic Microwave Background? Using Wien's Displacement (#1) and then converting the wavelength of frequency (#2), I get 282 GHz. #1. 0.0028977685 / 2.728 = 0.00106223185483871 Meters (1 millimeter) #2. 299792458 / 0.00106223185483871 =...
  34. C

    Projectile Problem - Time of Peak

    If a fireworks rocket has an initial upward speed of 58 m/s when launched, for how long will it coast before reaching its peak? So could I use the equation t=v0z/g? When I use this I get the peak to be 5.9s. Is v0z = 58 m/s or would that be 0? Am I approaching this correctly?
  35. T

    Do sex drives peak at certain age?

    Probably they do. However, I've heard there is a difference between guys and girls in that respect.
  36. S

    Medical Does the mind peak at a certain age?

    What are the prerequisites for great new scientific ideas? Intelligence and creativity? Assuming these two variables-feel free to add more if you wish-does the mind ever peak at a certain age in either of these two areas, be it physically or simply subjectively? It seems the true geniuses do...
  37. T

    Information concerning the Hubbert Peak Theory

    In the last couple of days I have been searching for information concerning the Hubbert Peak Theory. Most of the information about peak oil seems to be alarmist and/or conspitacy theorist make-preparations-now-or-you're-gonna-die stuff. I have read that most oil companies and the US...
  38. V

    Will Peak Oil Occur This Thanksgiving?

    http://www.physorg.com/news8441.html" Sorry folks, but if his right, it means it’s all down hill from here.
  39. J

    Finding Peak value of E-field

    Hi, My Question: If the peak value of the magnetic field of an EM wave is 2 x 10^-7 T. Calculate the peak value of the E-field. Work: C=E/B so, 3*10^8 m/s=(E)/(2*10^-7 T) (3*10^8 m/s)(2*10^-7 T)=E E= 60 N/C Is this right ? Thank You
  40. Integral

    Father's Day Hike to Marys Peak - Photos & Trail View

    I took a Fathers day hike, thought I'd share the view. Marys Peak is about 20mi west of my home, I haven't been up there in many years, thought it was time for a revisit. these are just some shots along the way. First the requisite waterfalls...
  41. S

    Calculating RMS and Peak Values of Electric Fire

    A one bar electric fire has a power rating of 1000W (1kW). If the RMS voltage of the mains is 240V, find the RMS value of the current flowing in the fire and the peak values of current and voltage? Can some one please help me??..Its a past exam question and i don't even know how to start...
  42. M

    Generators (know r, l, B, angular speed of coil) how to find peak EMF?

    The coil of a generator has a radius of 0.14 m. When this coil is unwound, the wire from which it is made has a length of 5.7 m. The magnetic field of the generator is 0.20 T, and the coil rotates at an angular speed of 25 rad/s. What is the peak emf of this generator? Please help me get...
  43. L

    Peak Current of 0.03\mu F Capacitor on 2kV, 720Hz Line

    I am always confused with rms value and peak value, so here is the problem: What will be the peak value of the current of a well-insulated 0.03\mu F capacitor connected to a 2.0-kV(rms) 720-Hz line? So first I find the reactance of the capacitor, which is: X_c=\frac{1}{2\pi fC} 7.4k...
  44. J

    Projectile explodes at peak where will it fall?

    There is a projectile that explodes into equal mass fragments at its highest point. One falls vertically with initial speed. I need to find where the other will strike the ground and the energy released during the explosion. I am given the mass(19.6kg), angle (56 degress), initial...
  45. M

    News Are We Approaching the Point of No Return with Peak Oil?

    I am really curious as to what the minds on this forum think about Peak Oil. Set to hit around 2010, Peak Oil seems to get an insanely small amount of attention, especially considering that the 1970's oil crash was due to just a 5% decrease in oil production. After Peak Oil, it is...
  46. A

    Is Peak Oil Happening This Decade?

    I have in other threads assumed that the pessimists are correct and that peak oil is happening this decade. Do anyone have more information if this is correct? Can alternatives like tar sands, oil shale or abiogenic oil be dismissed? The peak-oil-this-decade theory is advocated here...
  47. Nim

    Peak Wave Deviation: How Far Do Objects Emit EM Radiation?

    How far from the peak wave do objects emit electromagnetic radiation? Humans emit infrared radiation, but I read that we also emit some microwave also.
  48. N

    How many peak sensitivity of the human eye?

    how many peak sensitivity of the human eye?
  49. marcus

    Silent, upon a peak in Darien

    Today is Saturday and it is an unwritten law that on Saturdays one is permitted to post sonnets. Here are the last 6 lines of one by Keats: ... Then felt I like some watcher of the skies When a new planet swims into his ken; Or like stout Cortez when with eagle eyes He stared at the...
  50. T

    How does incoming air temperature affect peak boost in air compressors?

    ...I reposted this in general physics forum here. Tried to delete this one, but was denied access.
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