Julie empties a box of metal disks on a mass scale. she notes the total mass of the disks and the mass of each disk. which expression gives the number of disks in the box? a) total mass × mass of one disk b) total mass – mass of one disk c) total mass + mass of one disk d) total mass ÷ mass of one disk

We have a colorless transparent liquid. it looks like water. we seperated it into a solid and a liquid by evaporration and condention was this a chemichal or a physical seperation a. chemical seperation b. physical seperation

Gordon is going for a run through the park, but it is cold outside. the low outside temperature could affect his personal safety.

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 = ?