Along straight wire carries a current of 10.5 a. a second wire is bent into a loop, with a radius of r = 7.5 cm. the wire loop is held at a distance d = 3.0 cm away from the long straight wire. find the magnitude and direction of the currrent in the loop which will produce a net magnetic field of 6.7 x 10-6 t out of the page at the center of the loop.

Asmall metal bar, whose initial temperature was 10° c, is dropped into a large container of boiling water. how long will it take the bar to reach 70° c if it is known that its temperature increases 2° during the first second? (the boiling temperature for water is 100° c. round your answer to one decimal place.) sec how long will it take the bar to reach 98° c? (round your answer to one decimal place.)

Curious carl calculated the density of a cube to be 4.50 g/cm3. what is the density of the cube in g/l?

An object is 10 cm from the mirror, its height is 1 cm and the focal length is 5 cm. what is the image height? (indicate the object orientation by including the + or - sign with the answer.) hi = cm +1 -1 +10 -10