Brutus builds the simple electric generator pictured below. An electric current is generated in the wire loop whenever he turns the crank, causing the magnet to spin.
crank
magnet
wire loop
How could Brutus increase the amount of electric current his generator produces?
A.
replace the magnet with a weaker magnet
B.
increase the distance between the magnet and the wire loop
C
replace the wire loop with an unlooped strand of wire
D
increase the rate at which he turns the crank

You have two photos of a person walking. one shows the person at the corner of third and main streets, the other shows the person at the corner of tenth and main streets. there are lampposts at every corner in this town, and the first picture shows it to be 10: 32: 00 exactly. the second picture shows it to be 10: 49: 30. you know three facts: (1) all of the clocks are synchronized; (2) there are exactly 12 equal-sized blocks per kilometer in this town; and (3) the streets that cross main in this area are numbered consecutively, with no interruptions. what is the person’s average speed in kilometers per hour?