You are measuring electricity consumption by various end uses in a building. The sensors you use to make the measurements are accurate to about 1% of the reading. You are able to measure the following items separately and find that:a) The telephone system uses 20 W . b) The lights use 10.3 kW c) The computers and office equipment use 15.4 kW d) The HVAC system uses 45 kW

The temperature of air decreases as it is compressed by an adiabatic compressor. a)- true b)- false

Ariver flows from north to south at 8 km/h. a boat is to cross this river from west to east at a speed of 20 km/h (speed of the boat with respect to the earth/ground). at what angle (in degrees) must the boat be pointed upstream such that it will proceed directly across the river (hint: find the speed of the boat with respect to water/river)? a 288 b. 21.8 c. 326 d. 30.2

Shafts are machine elements that are used to a) carry axial loads b) direct shear loads c) transmit power d) rotate at constant speed e) none of the above circular and square shafts subjected to the same torque under the same circum behave a) the same way b) almost the same way