Which of these is the BEST description of

a rock?

A. a mixture of one or more minerals and possibly organic

matter

B. one pure mineral and organic matter

C. a mixture of organic matter

D. various minerals, but no organic matter

Kirby is conducting a literature review in preparation for his study of "expectations regarding the sharing of financial and practical responsibilities among married and cohabiting couples in which both partners are between the ages of 20 and 29.

Technician A says powdered metal rods can be resized just like a regular rod. Technician B says powdered metal rods can be resized if bearings of a larger diameter are available for that particular engine. Who is correct?

An air conditioner using refrigerant R-134a as the working fluid and operating on the ideal vapor-compression refrigeration cycle is to maintain a space at 22°C while operating its condenser at 1000 kPa. a.

Which of the following components of a PID controlled accumulates the error over time and responds to system error after the error has been accumulated? a) - Proportional b) - Derivative c) - Integral d) - ON/OFF.

If, when a relay is energized, you measure 0.05 VAC across a set of normally open contacts, the A. relay is operating properly B. contacts must be burnt C. contacts must be pitted D. coil is open

Yo can someone find me an e-boy?

If the surface energy of a magnesium oxide - nickel oxide (MgO-NiO) solid solution is 1.05 J/m2 and its elastic modulus is 198 GPa, what is the maximum length of an internal elliptical flaw, in mm, if the ceramic part must survive an applied tensile

A (n) 78-hp compressor in a facility that operates at full load for 2500 h a year is powered by an electric motor that has an efficiency of 93 percent. If the unit cost of electricity is $0.

What design advantages can you identify in the location of the controller

A dam 75 ft wide, with a nominal flow rate of 260 ft3/s, is to be studied with a scale model 3 ft wide, using Froude scaling as the most important similarity parameter.