Elements are composed of atoms of at least two different types.
True
False

We put a force of 50n on an object and the acceleration is 100 m/s². what is the mass of the object?

Arefrigerator uses r-134a as the working fluid and operates on the ideal vapor-compression refrigeration cycle except for the compression process. the refrigerant enters the evaporator at 120 kpa with a quality of 34 percent and leaves the compressor at 70°c. if the compressor consumes 450 w of power, determine (a) the mass flow rate of the refrigerant, (b) the condenser pressure, and (c) the cop of the refrigerator. (0.00644 kg/s, 800 kpa, 2.03)

Describe the three ray tracing steps used to identify an image for the given situation.