A2-m3 rigid tank initially contains air whose density is 1.18 kg/m3 . the tank is connected to a high-pressure supply line through a valve. the valve is opened, and air is allowed to enter the tank until the density in the tank rises to 5.30 kg/m3 . determine the mass of air that has entered the tank?

Explanation:

It is known that density is the mass present in per unit volume.

Mathematically,         Density =

Since, it is given that is 1.18 , is 5.30 , and volume is 2 .

Therefore, mass of air that has entered will be -   and it will be calculated as follows.

                        =

      =

                                            = 8.24 kg

Thus, we can conclude that mass of air that has entered the tank is 8.24 kg.

c.the charges if the proton and electron and gravity

laticia draws the diagram below to show earth’s magnetic field.

answer

the arrows to the right of earth should point up.