A person is walking in downtown Chicago. He starts 7 blocks north and 3 blocks west of the city's center. He then walks to a position of 12 blocks north and 1 block east of the city's center. What was his displacement magnitude and direction?
O A. magnitude: 16.2 blocks; direction: -68.2 east of north
B. magnitude: 19.1 blocks; direction: -6.01 east of north
O C. magnitude: 6.40 blocks; direction: 51.3* east of north
O D. magnitude: 6.40 blocks; direction: 38.7" east of north

(2) (a) you have a simple circuit that consists of only a battery (δvbat=1.5v) and two resistors with resistance r1=10ω and r2=5ω, connected in series with each other. what is the current running through the battery? (b) you re-arrange your circuit so now r2 is attached in parallel to r1 rather than in series. what is the current running through the battery? (c) you add an additional resistor r3=7ω on the same branch as r2. what is the current running through the battery? (d) what is the power dissipated in r3?

Which of the following list the divisions of the geologic time scale in order from longest to shortest

A51 kg woman skis down a hill and her kinetic energy is 9.96e4 j. what is her speed?