Apiano wire with mass 2.95 g and length 79.0 cm is stretched with a tension of 29.0 n . a wave with frequency 105 hz and amplitude 1.80 mm travels along the wire.

(a) calculate the average power carried by the wave.
(b) what happens to the average power if the wave amplitude is halved?

During physical science, ms. greene challenged her students to produce an energy transformation. james and jill wrapped a 4-inch nail with a coil of fifty turns of wire. they connected one end of the coil to one terminal of a knife switch. they connected the other terminal of the knife switch to the battery. finally, they connected the end of the coil to the other terminal of the battery. james held the tip of a 1-inch nail near the flat end of the 4-inch nail. jill closed the knife switch quickly and then opened it. the 1-inch nail was pulled toward the 4-inch nail. what is the best explanation of why the nail moved? a) electrical energy was converted to mechanical energy in the 1-inch nail. b) the 4-inch nail became an electromagnet and the magnetic force attracted the 1-inch nail. c) the electric current in the 4-inch nail was converted to mechanical energy in the 1-inch nail. d) the 4-inch nail had a positive charge and the 1-inch nail had a negative charge. opposites attracted.

According to newtons universal law of gravitation, which would change the parh of the ball so it traces out widest curved path possible?

Which type of basaltic lava flow has a fairly smooth