18. the gajiabad express travels from
mujaffanagar to assam having distance 960
km in two hours; the distance between
two rails is 130 cm; the value of magnetic
field being 5 x 10-t; the force required to
oppose the motion is;
a. 4.47 x 10^-5n b. 4.74 x 10^-5n
c. 7.47*10^-7 d. 7.74x 10^-5n

The plum pudding model of the atom state that ?

One number is said to be an "order of magnitude" larger than another number if choose one: a. it is 10 times larger. b. it is 5 times larger. c. it is 3 times larger. d. it is 100 times larger. e. it is 2 times larger.

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?