What does the time line suggest about scientific knowledge throughout the years? It suggests that scientific knowledge began when the first convex lens was developed, since complex lenses opened
B
It suggests that scientific knowledge changes over time, as shown by the new discoveries made about lenses leading
It suggests that scientific knowledge does not change, as scientists work independently of each other and do not build
D
It suggests that scientific knowledge is replaced and not modified, as exemplified by the single lens replacing multiple

Which of the choices are parts of an atom? select all that apply. a.) compound b.) electron c.) neutron d.) molecule e.) photon f.) proton g.) element

16. a brave but inadequate rugby player is being pushed backward by an opposing player who is exerting a force of 800 n on him. the mass of the losing player plus equipment is 90.0 kg, and he is accelerating at 1.20m/s2 size 12{1 "." "20"" m/s" rsup { size 8{2} } } {} backward. (a) what is the force of friction between the losing player’s feet and the grass? (b) what force does the winning player exert on the ground to move forward if his mass plus equipment is 110 kg? (c) draw a sketch of the situation showing the system of interest used to solve each part. for this situation, draw a free-body diagram and write the net force equation.

Which planets are visible without a telescope