When two gears mesh, one is called the driver gear because it a) is the follower gear
b) is the smaller gear
c) moves in anticlockwise direction
d) moves in a clockwise direction
e) transmits the power to the driven gear

Your science teacher brings in a speaker to talk to your class about climate change. during the session, students ask a few questions. which questions are related to the current evidence on climate change

Acalorimeter uses the principle that thermal energy flows from hotter material to colder material until both reach the same

Consider the growth of a 20-nm-diameter silicon nanowire onto a silicon wafer. the temperature of the wafer surface is maintained at 2400 k. assume the thermal conductivity of the silicon nanowire is 20 wm-1k-1 and all its surfaces including the tip are subjected to convection heat transfer with the coefficient h = 1×105 wm-2k-1 and t∞ = 8000 k. when the nanowire grows to l = 300 nm, what is the temperature of the nanowire tip (t (x =