Recent content by Shatzkinator

  1. S

    Charged Spheres +quadratic equation

    1.8 x 10-6 is incorrect as well :( my answer is 2.22 x 10^-6 not 6 both are incorrect anyways
  2. S

    Charged Spheres +quadratic equation

    i checked over calculations and everything... really stumped thkz for the 103 tip
  3. S

    Charged Spheres +quadratic equation

    0.9 = (8.99 x 10^9)q1 (14 x 10^-5 - q1)/ 1.7^2 2.6 = 1.26 x 10^6 q1 - 8.99 x10^9 q1^2 -8.99 x10^9 q1^2 + 1.26 x 10^6 q1 - 2.6 = 0 quadratic.. -1.26 x 10^6 + sqt ((1.26 x 10^6)^2 - 4(- 8.99^9)(-2.6)) / 2(-8.99^9) = 2.22 x 10^6 the subtraction root from same equation = 1.38 x10^-4
  4. S

    Charged Spheres +quadratic equation

    Homework Statement Two small, positively charged spheres have a combined charge of 14.0 × 10-5 C. If each sphere is repelled from the other by an electrostatic force of 0.9 N when the spheres are 1.7 m apart, what is the charge (in Coulombs) on the sphere with the smaller charge? Homework...
  5. S

    How Does Charge Redistribution Affect Forces in a Triangular Sphere System?

    Homework Statement In the figure 21-40, three identical conducting spheres form an equilateral triangle of side length d = 24.0 cm. The sphere radii are much smaller than d and the sphere charges are qA = -3.45 nC, qB = -3.91 nC, and qC = +6.09 nC. (a) What is the magnitude of the...
  6. S

    How Do You Calculate the Period of Oscillation for a Physical Pendulum?

    Homework Statement A physical pendulum consists of 4.8 m long sticks joined together as shown in Fig. 15-43. What is the pendulum's period of oscillation about a pin inserted through point A at the center of the horizontal stick...
  7. S

    Rotational Inertia of a Rigid Body with Joined Rods

    Two thin rods (each of mass 0.50 kg) are joined together to form a rigid body as shown in Fig. 10-66. One of the rods has length L1 = 0.30 m, and the other has length L2 = 0.60 m. What is the rotational inertia of this rigid body about (a) an axis that is perpendicular to the plane of the paper...
  8. S

    Rotational Inertia of a Rigid Body with Joined Rods

    Homework Statement The masses and coordinates of four particles are as follows: 27 g, x = 2.0 cm, y = 2.0 cm; 16 g, x = 0, y = 4.0 cm; 43 g, x = -3.0 cm, y = -3.0 cm; 61 g, x = -2.0 cm, y = 4.0 cm. What are the rotational inertias of this collection about the (a) x, (b) y, and (c) z axes...
  9. S

    Work and gravitational potental energy

    Homework Statement A thin rod, of length L = 2.00 m and negligible mass, that can pivot about one end to rotate in a vertical circle. A ball of mass m = 5.00 kg is attached to the other end. The rod is pulled aside to angle theta = 30 and released with initial velocity v= 0. As the ball...
  10. S

    What is the average force on Superman's chest when hit by 3g bullets at 500 m/s?

    hmm interesting. So how would I know to play with the units rather than using typical linear momentum equations?
Back
Top