Answers: 3
Physics, 21.06.2019 18:50
How does the image distance (di) of a convex lens compare with the image distance of a concave lens? a. the image distance of the convex lens is positive, and that of the concave lens is negative. b. both are negative for a virtual image. c. both are positive for a virtual image d. the image distance of the convex lens is negative, and that of the concave lens is positive.
Answers: 1
Physics, 21.06.2019 22:30
What is the earliest point in the universe that we can observe? why can’t we see back further than this?
Answers: 2
Physics, 22.06.2019 01:20
An engineer designs a roller coaster so that a car travels horizontally for 152 ft, then climbs 137 ft at an angle of 34.0° above the horizontal. it then moves 137 ft at an angle of 48.0° below the horizontal. if we take the initial horizontal motion of the car to be along the +x-axis, what is the car's displacement? (give the magnitude of your answer, in ft, to at least four significant figures and give the direction of your answer in degrees counterclockwise from the +x-axis.)
Answers: 1
Physics, 22.06.2019 15:30
What are the north and south poles of a solenoid change with?
Answers: 1
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