Using postulate 4, show that the probability to obtain a particular measurement of spin is unaffected by changing a state l ψ》 to a state eß1ψ. briefly discuss the significance of your result, what does it say to you? (and, how is it connected to the convention you imposed in q3 and 4 above, setting the coefficient of the |+> basis ket to be positive and real? )

The voltage applied across a given parallel-plate capacitor is doubled. how is the energy stored in the capacitor affected?

An astronaut in space cannot use a scale or balance to weigh objects because there is no gravity. but she does have devices to measure distance and time accurately. she knows her own mass is 77.4 kg , but she is unsure of the mass of a large gas canister in the airless rocket. when this canister is approaching her at 3.50 m/s , she pushes against it, which slows it down to 1.30 m/s (but does not reverse it) and gives her a speed of 2.60 m/s . what is the mass of the canister?

Is the number of complete movements of a wave per second.