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, 21.06.2019 19:30
11. you want to calculate the displacement of an object thrown over a bridge. using -10 m/s2 for acceleration due to gravity, what would be the total displacement of the object if it took 8 seconds before hitting the water?
Answers: 1
Physics, 22.06.2019 23:00
Determine the force the sun exerts on an object with a mass of 80.0 kg if that object is on the earth. what is the force exerted by the moon on the same object? what is the force the earth exerts on it?
Answers: 1
Physics, 23.06.2019 03:00
The device shows the relative humidity at 22°c. what’s the water vapor density if the maximum water vapor in air at this temperature is 20 grams/cubic meter? a device showing that at 22 degrees celsius the relative humidity is 58%. a. 11.6% b. 11.6 g/m3 c. 12.76% d. 12.76 g/m3 reset next
Answers: 2
Physics, 23.06.2019 14:00
Shows a map of olivia's trip to a coffee shop. she gets on her bike at loomis and then rides south 0.8mi to broadway. she turns east onto broadway, rides 0.8 mi to where broadway turns, and then continues another 1.2mi to the shop.
Answers: 1
The illuminance of a surface varies inversely with the square of its distance from the light source....
Chemistry, 13.01.2021 19:20
Chemistry, 13.01.2021 19:20
Mathematics, 13.01.2021 19:20
Mathematics, 13.01.2021 19:20
Mathematics, 13.01.2021 19:20
Mathematics, 13.01.2021 19:20
Advanced Placement (AP), 13.01.2021 19:20
Physics, 13.01.2021 19:20
Mathematics, 13.01.2021 19:20
History, 13.01.2021 19:20
Mathematics, 13.01.2021 19:20
Geography, 13.01.2021 19:20