A 20ft long ser-saw has its fulcrum in the middle . A 125 lb kid sits at the left end. Another kid sits 2.30 ft in from the right end. How much must the second kid weigh to balance the see-saw?

Study the diagram showing the range of temperature in the earth’s layers. which temperature most likely corresponds to the asthenosphere? 1,613°c 2,521°c 3,628°c 6,217°c

What is the radius of the circular path ofa charged particle in a magnetic field?

A2 kg ball travellng to the right with a speed of 4 m/s collidees with a 5 kg ball traveling to the left with a speed of 3 m/s. take right to be the positive direction. what is the total momentum of the two balls before they collide? what is the total momentum of the two balls after they collide?