Calculate the force of gravity between two 70 kg students standing 1 meter apart. A. 2.58 x 10^ -12 N
B. 8.94 x 10^ -6 N
C. 7.75 x 10^ -4 N
D. 3.27 x 10^ -7 N

Rank the torques on the five doors shown in the figure above from least to greatest. note that the magnitude of all the forces is the same

Acaterpillar tries to climb straight up a wall a meter high, but for every 2 cm up it climbs, it slides down 1 cm. eventually, it reaches the top. when it reaches the top, it does not pull itself over so it will slide down 1 cm. what is the total displacement traveled?

(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?