Which of the following represents a covalent compound?

KF

NaCl

SBr3

Mg2O

Refrigerant 134a enters an air conditioner compressor at 4 bar, 20°C, and is compressed at steady state to 12 bar, 80°C. The volumetric flow rate of the refrigerant entering is 8 m3/min.

Consider a 100 g object dropped from a height of 1 m. Assuming no air friction (drag), when will the object hit the ground and at what speed? Take g 9.81 m/s m/'s.

When buying a car, you tell the salesman that you want to make sure the car can go from 0 miles per hour to 60 miles per hour in 5 seconds. You are describing the car's

What is a sloping surface, like a ramp, that reduces the amount of force required to do work.

How are magnet'so magnetic force and magnetic field different

Which element has a complete valence electrons hell?

3. If you are part of a center or network, you can use program-level data to A. change the way you record and maintain information. B. identify professional development needs. C. improve the management systems to support child learning. D.

What did James Madison foresee as an important element of the political system? a. Hyperpluralism b. Social movements c. Interest groups d. Lobbying

Which force is responsible for the formation of waves? A. gravity B. wind C. friction D. centripetal

Is it better to design a ship with bigger bottom area or design it with smaller bottom area?