Which movement causes day and night on earth?
rotation of earth
revolution of earth aro...
Answers: 1
Physics, 22.06.2019 03:30
The focal length of a relaxed human eye is approximately 1.7 cm. when we focus our eyes on a close up object, we can change the refractive power of the eye by about 16 diopters. (a) does the refractive power of our eyes increase or decrease by 16 diopters when we focus closely? explain. (b) calculate the focal length of the eye when we focus closely.
Answers: 3
Physics, 22.06.2019 06:30
Apebble is thrown into a calm lake, ripples are formed from the center and move outward. the water particles in the lake travel in a circular pattern that moves up and down on the surface of a lake, and the energy travels a) diagonally. b) downward. c) horizontally. d) upward.
Answers: 2
Physics, 22.06.2019 08:30
What is the primary force that suspension bridges use cables to hold their spans up? a. tension force b. resistance force c. normal force d. elastic force e. applied force
Answers: 3
Physics, 22.06.2019 22:50
The illuminance of a surface varies inversely with the square of its distance from the light source. if the illuminance of a surface is 120 lumens per square meter when its distance from a certain light source is 6 meters, by how many meters should the distance of the surface from the source be increased to reduce its illuminance to 30 lumens per square meter?
Answers: 3
Physics, 19.03.2021 20:50
Mathematics, 19.03.2021 20:50
Physics, 19.03.2021 20:50
Biology, 19.03.2021 20:50
Business, 19.03.2021 20:50
Mathematics, 19.03.2021 20:50
Mathematics, 19.03.2021 20:50
Mathematics, 19.03.2021 20:50
Advanced Placement (AP), 19.03.2021 20:50
Mathematics, 19.03.2021 20:50
History, 19.03.2021 20:50