17.A body of mass, 20g appears to have a mass of
13g in oil and 12g in water. What is the relative
density of the oil.
8. State the law of floatation and explain its
application.

Along, straight wire with 3.0 a current flowing through it produces magnetic field strength 1.0 t at its surface. if the wire has a radius r, where within the wire is the field strength equal to 36.0% of the field strength at the surface of the wire? assume that the current density is uniform throughout the wire

According to social exchange theory, altruistic behaviors benefit the individual who performs them.

What are chlorofluorocarbons and what impact do they have on the atmosphere?