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? )

An electron and a proton have the same kinetic energy upon entering a region of constant magnetic field and their velocity vectors are perpendicular to the magnetic field. suppose the magnetic field is strong enough to allow the particles to circle in the field. note: you'll need to look up the masses for an electron and proton. 1) what is the ratio of the radii of their circular paths rp/re?

One form of energy can be another type of energy. a. created to form b. transformed into c. destroyed and then created to form

Assume you measured the mass of the cart to be (500 ± 1) g and the mass of the additional mass you put on the cart to be (500 ± 1) g as well. since the scale you are using in the lab cannot measure objects heavier than 600g you will have to sum up individual pieces and propagate the error. so what would be the mass and the standard error of the cart and the mass