O lentila biconvexa simetrica din sticla, avand indicele de refractie n = 1,5, cu distanta focala f = 60 cm, formeaza imaginea unui obiect asezat la 90 cm de ea. Sa se precizeze unde se formeaza imaginea, natura acesteia, marirea liniara transversala. Sa se calculeze convergenta lentilei si raza acesteia.

Ajet plane is speeding down the runway during takeoff. air resistance is not negligible. identify the forces on the jet.

Observation and experimentation have led many scientists to accept a theory about the origin of the universe. this theory is called the big bang theory. scientific evidence collected and observed by scientists around the world suggests that the universe is ever expanding from a hot and dense initial state. what makes this a scientific theory? (2 points)

Many pharmaceutical drugs are organic compounds that were originally synthesized in the laboratory. which two scientific disciplines are bridged by pharmaceutical drugs? chemistry and forensics chemistry and medicine biology and forensics biology and criminology