What is the density of an object that has a mass of 5 kilograms and takes up a cubic meter of volume?

When a neutral charge, comes into contact with a positive charge they repel each other nothing happens the neutral charge becomes negative they attract each other

6–43 a food department is kept at 2128c by a refrigerator in an environment at 308c. the total heat gain to the food department is estimated to be 3300 kj/h and the heat rejection in the condenser is 4800 kj/h. determine the power input to the compressor, in kw and the cop of the refrigerator.

Give one example to show that when substances are mixed,it may result in a chemical or a physical change depending on the conditions.