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  2. Finding the median in a bar graph problem - Physics Forums

    www.physicsforums.com/threads/finding-the-median-in-a-bar-graph-problem.996629

    To find the median in a bar graph, first arrange the data values in ascending or descending order. Then, find the middle value in the set. If there is an even number of data values, take the average of the two middle values to find the median. 3.

  3. Finding the Mass from an Acceleration vs Force graph - Physics...

    www.physicsforums.com/threads/finding-the-mass-from-an-acceleration-vs-force...

    To find the mass from an acceleration vs force graph, you would need to use the equation F=ma, where F is the force, m is the mass, and a is the acceleration. Rearrange the equation to solve for mass (m=F/a) and then plug in the values for force and acceleration from the graph. 2.

  4. How to Construct Best Fit, Min and Max Slope Lines with Error...

    www.physicsforums.com/threads/how-to-construct-best-fit-min-and-max-slope...

    Hi KDevil, If you're uncertainty is so small you must have a lot of significant figures in your data. If that's the case, you can still pull an uncertainty out of your max-min slope as long as there is some difference between the max and the min slopes.

  5. Speed of a Magnet Falling through a Conducting Wire - Physics...

    www.physicsforums.com/threads/speed-of-a-magnet-falling-through-a-conducting...

    Homework Statement A small but very powerful bar magnet falls from rest under gravity through the center of a horizontal ring of conducting wire, as shown in the figure below (on the left). The speed-versus-time graph, in arbitrary units, of the magnet will correspond most closely to which of...

  6. Difficult time with motion graphs & dynamics - Physics Forums

    www.physicsforums.com/threads/difficult-time-with-motion-graphs-dynamics.957188

    Difficult time with motion graphs & dynamics. devilish_wit. Oct 8, 2018. Dynamics Force Graph Graphs Motion Tension Time. In summary, the figure shows the speed of a person's body doing a chin-up, with a mass of 72.7 kg. The force exerted by the chin-up bar on his body can be calculated using the equation F = ma, where m is the mass and a is ...

  7. Why Are My Excel Error Bars Only Horizontal? - Physics Forums

    www.physicsforums.com/threads/why-are-my-excel-error-bars-only-horizontal.671097

    I have a graph which I would like to add Y error bars to. When I click to add the error bars, it only allows me to add horizontal bars.

  8. Calculating Net Work, Heat Transfers in a Thermodynamic Cycle

    www.physicsforums.com/threads/calculating-net-work-heat-transfers-in-a...

    Q23 = (1.4 bar)(0.144 bar m^3) - (1.4 bar)(0.028 m^3) = 0.144 bar m^3 In process 3-1, we are given that the pressure is constant, so we can use the equation W = pΔV to calculate the work done. We can also use the relationship Q = mCΔT to calculate the heat transfer, where m is the mass of the gas and C is the specific heat capacity.

  9. What's the UNIT after you take the natural log? - Physics Forums

    www.physicsforums.com/threads/whats-the-unit-after-you-take-the-natural-log.161791

    kingwinner. 1,270. 0. I was working on an experiment for the vapor pressure of water and I have the following formula. ln (p) = -L/ (RT) + ln (p_o) L=heat of vaporization of water. R=Molar gas constant. T=temperature in Kelvins. I have some data points for the pressure p in units of mm Hg, when I take the natural log of it, ln (p), what will ...

  10. Curious about average velocity (v bar) - Physics Forums

    www.physicsforums.com/threads/curious-about-average-velocity-v-bar.350049

    Average velocity (v bar) looks at the overall change in position over a specific time period, while instantaneous velocity looks at the velocity of an object at a specific moment in time. Instantaneous velocity can be found by taking the derivative of the position-time graph. How does average velocity (v bar) relate to speed?

  11. Reversible vs Irreversible Gas Compression and Expansion Work

    www.physicsforums.com/insights/reversible

    The difference between the reversible work and the irreversible work in all these cases is the result of viscous dissipation in the damper element. In the next section, we will consider the comparison between reversible work and irreversible work for expansion and compression of an ideal gas and will present a graph analogous to Fig. 5 for this ...