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

Yo can someone find me an e-boy?

A classroom that normally contains 40 people is to be air-conditioned with window airconditioning units of 5-kW cooling capacity. A person at rest may be assumed to dissipate heat at a rate of about 360 kJ/h.

Why the water levels in the various pizometerce tubes are different?

Technician A says damage can occur to solid-state circuitry if the charging voltage is allowed to get too high. Technician B says damage can occur if the vehicle is allowed to run with the battery disconnected. Who is correct?

What are the characteristics of Polyamide?

16 Suppose that a steel of eutectoid composition is cooled to 550°C (1020°F) from 760°C (1400°F) in less than 0.5 s and held at this temperature.

The rotor in a shaded pole motor consists of A coils energized by alternating current B a short circuited loop of copper wire c a permanent magnet D an iron cylinder

What factors are likely to promote the formation of stress corrosion cracks?

Find the mass if the force is 18 N and the acceleration is 2 m/s2

Which process must first take place in order for the proteins in foods to be used by body cells? (1) digestion (3) synthesis (2) storage (4) excretion