Recent content by Jm4872

  1. J

    Electric Field magnitude and distance

    Got the right answer! I'm not sure what I did wrong with my math there but it worked out after! Thanks for pointing that out !
  2. J

    Electric Field magnitude and distance

    Homework Statement The first question that was asked was; What is the total charge of the radon nucleus? (The neutral radon atom has 86 electrons.) the answer to that is 1.38*10^(-17) C the second question asked is; What is the magnitude of its electric field at a distance of 6.0 x10-(10)...
  3. J

    Equation of a plane given point P and a line

    Thanks ! I ended up using the direction vector and the point used to create the equation of the line and then cross product to get my answer!
  4. J

    Equation of a plane given point P and a line

    Homework Statement Find the equation of the plane containing P(2,1,-1) and the line with equation x=2+t y=4 z=-1+t Homework Equations Cross product The Attempt at a Solution I understand that I need to find t and then solve for two points on the line, then find the cross...
  5. J

    What Will Be the Final Temperature of Water After Adding Steam?

    oops, I didn't realize that the values didn't show up. it should be 5.00g, 100degrees celcius, 100.0g and 27 degrees celcius
  6. J

    What Will Be the Final Temperature of Water After Adding Steam?

    Homework Statement What will be the final temperature of the water in an insulated container as the result of passing 5.00 of steam at 100.0 into 100.0 of water at 27.0? Homework Equations q=mct q=nH The Attempt at a Solution I am completely lost as to how to solve for...
  7. J

    Simple pendulum and harmonic motion

    Homework Statement A simple pendulum is 5.20 m long. What is the period of simple harmonic motion for this pendulum if it is hanging in an elevator that is accelerating upward at 5.90 m/s2? Homework Equations T=2pi*(sqrt(L/g)) The Attempt at a Solution all I did was plug in the...
  8. J

    Springs and simple harmonic motion

    oh wow haha now I feel dumb! haha thank you!
  9. J

    Springs and simple harmonic motion

    Homework Statement A mass is oscillating on a spring with a period of 1.45 s. At t = 0 the mass has zero speed and is at x = 8.80 cm. What is the magnitude of the acceleration at t = 2.30 s? Homework Equations x(t)=Acos(wt + phi) a(t)=-Aw^2cos(wt + phi) a=w^2x T=2pi/w The Attempt...
  10. J

    Solve Cable Torque Problem: Find Hcomponent Force on 23.8 kg Beam

    Homework Statement A 23.8 kg beam is attached to a wall with a hinge and its far end is supported by a cable. The angle between the beam and the cable is 90°. If the beam is inclined at an angle of theta=30.7° with respect to horizontal, what is the horizontal component of the force exerted...
  11. J

    Perfectly Inelastic momentum question

    Homework Statement Two ice-fishermen are driving trucks across a frozen and frictionless lake. Truck 1 (m1 = 920kg) is traveling with a speed of 16.3m/s in a direction of 57.4degrees SOUTH of EAST. Truck 2 (m2 = 930kg) is traveling due NORTH with a speed of 24.9m/s. The trucks collide and lock...
  12. J

    Power Needed to Pull Skier Up Slope

    Homework Statement A skier of mass 78.7 kg is pulled by a motor-driven cable up a 31.9 ° slope at a constant speed of 1.04 m/s. If the coefficient of kinetic friction between the skis and the slope is 0.270, what power must be delivered by the motor pulling the cable? Homework Equations P=FV...
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