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Select the correct answer.
Which event is an example of eustress that can increase motivation and improve performance?
OA
getting fired from a job
OB. going away to college
OC
failing a class in high school
OD. getting a divorce
OE
dealing with the loss of a loved one

Which is the best predictor of the radioactive nature of an isotope? o the proton-to-electron ratio the neutron-to-proton ratio o the neutron-to-electron ratio the electron-to-proton ratio

Give one example to show that when substances are mixed, it may result in a chemical or a physical change depending on the conditions.

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 = ?