A 20 kg box is at rest on a level floor. the coefficient of static friction between the box and the floor is 0.35. hillary pushes against the box with a horizontal force of 50N. What is the force of statix friction on the box?

In a good thermo flask the main cause of heat loss is

Observations show that interstellar clouds can have almost any shape and

Two manned satellites approaching one another at a relative speed of 0.550 m/s intend to dock. the first has a mass of 2.50 ✕ 103 kg, and the second a mass of 7.50 ✕ 103 kg. assume that the positive direction is directed from the second satellite towards the first satellite. (a) calculate the final velocity after docking, in the frame of reference in which the first satellite was originally at rest.(b) what is the loss of kinetic energy in this inelastic collision? (c) repeat both parts, in the frame of reference in which the second satellite was originally at rest. final velocity(d) loss of kinetic energy = ?