Someone asap i believe the answer is c or d gyres are rotating currents that cause marine debris to collect in certain areas of the ocean. what impact does this have on marine life? chemicals cause photosynthesis to increase. more pristine living space is created. plastics accumulate in the food chain. there is reduced light at the surface.

Simple machines can a. increase force only b. decrease force only c. increase or decrease force

Consider a 1000 w iron whose base plate is made of 0.5 cm thick aluminum alloy 2024-t6 (ρ = 2770 kg/m3 and cp = 875 j/kg°c). the base plate has a surface area of 0.03 m2. initially, the iron is in thermal equilibrium with the ambient air at 22°c. assuming 90% of the heat generated in the resistance wires is transferred to the plate, determine the minimum time needed for the plate temperature to reach 200°c.

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?