The two forces F, and Fshown in Figure 1) act on a 21.0-kg object on a frictionless tabletop. Suppose that
F1 = 10.4 N and F2 = 18.6 N
Part A
Determine the magnitude of the net force on the object for the diagram (a) in the figure.
Express your answer to three significant figures and include the appropriate units.

Which statement best explains why an object weight less on mercury than it does on earth

Organelles are 1. responsible for producing power for the cell 2. tiny structures in the cell that carry out the cell's activities 3. responsible for digestion in the cell 4. found outside of the membrane

(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?