Awire is bent to form a circular loop whose radius is 5 cm. the wire carries a current of 10.0 a. the resulting current loop is placed in a uniform magnetic field of 12 t, with its magnetic dipole moment vector making an angle of 30 degree with the direction of the field. find the magnitude of the torque that the magnetic field exerts on the wire. 1.88 n. m 0.94 n. m 0.47 n. m 0.16 n. m 0.0 n. m

If a star is moving toward earth, it is

Light from two different sources are incident upon the same side of a polarizing filter. light from one source is polarized with total intensity ip, while light from the other source is unpolarized with total intensity iu. as you rotate the polarizing filter through 360 degrees, the intensity of the transmitted light on the other side varies by a factor of 9. what is the relative intensity of the initial polarized source to the unpolarized source, or ip/iu?

On a mild saturday morning while people are working inside, the furnace keeps the temperature inside the building at 23degreesc. at noon the furnace is turned off, and the people go home. the temperature outside is a constant 16degreesc for the rest of the afternoon. if the time constant for the building is 3 hr, when will the temperature inside the building reach 18degreesc? if some windows are left open and the time constant drops to 2 hr, when will the temperature inside reach 18degreesc?