Examlex
A thin double convex lens is to focus the image of an object onto a screen so that the image is life-sized.The lens surfaces have equal radii of curvature of 112 cm,and the refractive index of the lens material is 1.500.
(a)How far from the lens should the screen be placed?
(b)How far is the screen from the object?
Human History
The recorded or studied past of the human species, encompassing historical events, cultures, advancements, and transformations through time.
Neandertals
An extinct species of human that was widely distributed in ice-age Europe between c. 120,000-35,000 years ago, coexisting with early Homo sapiens.
Gracile Australopithecines
One member of the genus Australopithecus possessing a more lightly built chewing apparatus; likely had a diet that included more meat than that of the robust australopithecines.
Human Ancestors
Prehistoric species and genera that are considered predecessors of modern humans in the evolutionary lineage.
Q8: Unpolarized light passes through three polarizing filters.The
Q17: A solenoid having N turns and carrying
Q18: An optical fiber made of glass with
Q19: If the accuracy in measuring the position
Q23: If the accuracy in measuring the velocity
Q26: The energy of the ground state in
Q29: A parallel-plate capacitor has a capacitance of
Q37: Astronaut Mark Uri is space-traveling from planet
Q46: Two long conducting cylindrical shells are coaxial
Q81: A certain isotope has a half-life of