An object is placed a distance of 50 cm from a convex mirror of radius 40 cm. what is the magnification? o 3.5 o 2.5 o 0.3 0.5

The junction rule describes the conservation of which quantity? note that this rule applies only to circuits that are in a steady state.

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?

When solid surfaces slide over each other the kind of friction that occurs is called friction