Adits are a. the vertical shafts that go deep into a mine to reach to the depth at which ore is found. b. piles of mine tailings that are sprayed with acid to release more metal ore. c. the machines used to haul mined material in an open-pit mine. d. the entrances to underground mine shafts.

Ahouse has the following electrical appliance usage (1) single 40w lamp used for 4 hours per day (2) single 60w fan used for 12 hours per day (3) single 200w refrigerator that runs 24 hours per day with compressor run 12 hours and off 12 hours find the solar power inverter size in watt with correction factor of 1.25.

An electrical motor raises a 50kg load at a construct velencity .calculate the power of the motor, if it takes 40sec to raise the load through a height of 24m(take g =9.8n/g)

The drive force for diffusion is 7 fick's first law can be used to solve the non-steady state diffusion. a)-true b)-false