Wilma can mow a lawn in 80 minutes. rocky can mow the same lawn in 120 minutes. construct an equation that would allow you to determine how long it would take them to mow 2 lawns if they worked together. use t to represent the number of minutes they work.

Which accurately compares concave and convex lenses?

Explain why electric current cannot exist if a current doesn't have a voltage source.

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 = ?