Explain the use of remote sensing in surveying.

Asimple speed reducer is composed of 2 spur gears. the pinion gear has a pitch diameter of 0.75" and 36 teeth while the driven gear has a pitch diameter of 4.0" and 192 teeth. a)-what is the diametral pitch of each gear? b)-if an electric motor rotating ccw at 3000 rpm is coupled to the pinion, what is the rotational speed of the driven gear? c)-if the torque delivered to the pinion is 1 n-m, what is the torque on the driven gear? d)-what is the power transmitted by the gear train?

Consider a beam traveling through diamond and impinging upon the diamond-air interface. the critical angle of incidence for total internal reflection to occur is closest to the following value: select one: a)-22.50° b)-23.85 c)-24.30 d)-23.40° e)-none of the above

Acomposite spherical tank made of three different materials in series with inside and outside convection. a)-draw the schematic of the system. b)-draw the thermal circuit for this system with all details. c)-formulate an expression for the heat transfer rate. d)-formulate an expression for the overall heat transfer coefficient based on ai. e)-formulate an expression for overall heat transfer coefficient based on a4 (outer area).