Some more practice with tensor products. îfa8b is the tensor product of an observable a = at acting in hilbert space and bb acting hilbert space and (2) is any real-valued function, then f(a3 b) is an observable acting on ж. зно. true or false? f(a b) explicit counter-example. f(a) f(b). if true, demonstrate that it is true. if false, provide an explicit counter example.

The equation that describes a transverse wave on a string is y = (0.0120 m)sin[(927 rad/s)t - (3.00 rad/m)x] where y is the displacement of a string particle and x is the position of the particle on the string. the wave is traveling in the +x direction. what is the speed v of the wave?

What will a positive and a negative charge do if they are separated from each other?

Two 1.20-m nonconducting wires meet at a right angle. one segment carries + 2.50 µc of charge distributed uniformly along its length, and the other carries - 2.50 µc distributed uniformly along it, as shown in fig. 21.50. ( a. find the magnitude and direction of the electric field these wires produce at point p, which is 60.0 cm from each wire. ( b. if an electron is released at p, what are the magnitude and direction of the net force that these wires exert on it?