The potential energy of a 25 kg bicycle resting at the top of a 3 m high hill is
4. (gravity= 9.8 m/s2)
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Which type of microscope would allow the viewer to see ribosomes inside a cell?

Idon’t quite understand this problem

Balloon a has charge q, and identical mass balloon b has charge 10q. you hang them from threads near each other. choose all of the statements with which you agree. check all that apply. a. a and b exert the same magnitude forces on each other. b. the force that a exerts on b is 10 times the force that b exerts on a. c. the angle between the thread supporting a and the vertical is < the angle between the thread supporting b and the vertical. d. the force that a exerts on b is 1/10 the force that b exerts on a.