Recent content by blackheart

1. Two spheres having masses M and 2M and radii R and 3R, respectively, are simultaneously released from rest when the distance between their centers is 12R. Assume the two spheres interact only with each other and we wish to find the speeds with which they collide. Write an equation from one of...

Oh! I didn't divide by two... I have it now. Thanks a bunch.

I also have to solve this using conservation of momentum. Mv1i+2Mv2i = Mv1f + 2Mv2f I don't get how to solve this for v1 in terms of v2 when I don't know initial or final velocities.

1. Two spheres having masses M and 2M and radii R and 3R, respectively, are simultaneously released from rest when the distance between their centers is 12R. Assume the two spheres interact only with each other and we wish to find the speeds with which they collide. Write an equation from one of...

1. A 962kg satellite orbits the Earth at a constant altitude of 99km. How much energy must be added to the system to move the satellite into a circular orbit with altitude 195km? 2. Homework Equations : E = (-GMm)/2r \Delta E = Ef - Ei 3. My work (which produced the wrong answer)...

1. Three objects of equal mass are located at three corners of a square of edge length d. Find the magnitude and direction of the gravitational field at the fourth corner due to these objects. (Use the following as necessary: G, d, and m.) 2. Homework Equations : g = Gm/r2 3. My attempt...

1. A system consists of three particles, each of mass 1.90 g, located at the corners of an equilateral triangle with sides of 31.0 cm. Calculate the potential energy of the system. 2. Homework Equations : U= -(Gm1m2)/r G = 6.67x10^-11 Nm^2/kg^2 3. My attempt: I would think each particle...

7. 0/10 points All Submissions Notes Question: SerPSE8 11.P.037. Question part Points Submissions 1 2 0/5 0/5 4/100 2/100 Total 0/10 A wooden block of mass M resting on a frictionless, horizontal surface is attached to a rigid rod of length script i and of negligible mass. The rod...

[b]1. A rigid, massless rod has three particles with equal masses attached to it as shown below. The rod is free to rotate in a vertical plane about a frictionless axle perpendicular to the rod through the point P and is released from rest in the horizontal position at t = 0. Assume that m and d...