I will mark you brainlist please help 1) if an object in periodic motion completes one full cycle in 0.5 seconds, then 0.5 sec represents its:

• frequency

• period

• speed

• amplitude

Aregion of space in which a measurable gravitational force is indicated by the force exerted on a test mass is called

Which type of bond is found between the atoms of a molecule? a. metallic b. delocalized electron c. covalent d. ionic

Acommercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -35°c by rejecting waste heat to cooling water that enters the condenser at 18°c at a rate of 0.25 kg/s and leaves at 26°c. the refrigerant enters the condenser at 1.2 mpa and 50°c. if the compressor consumes 3.3 kw of power, determine (a) the mass flow rate of the refrigerant, (b) the refrigeration load, (c) the cop, and (d) the minimum power input to the compressor for the same refrigeration load.