How many cm are in 5.0 miles ? (1 mile = 5280 ft ift= 12 in 1in = 2.54 cm) using the method of dimensional analysis

The law of conservation of energy states that energy cannot be created or , energy can be from one substance to another. the first blank is ' destroyed ' and for the second blank is ' transferred '

Find the magnetic field a distance r from the center of a long wire that has radius a and carries a uniform current per unit area j in the positive z direction.

You've already seen the value of 9.8 in this lesson. what's this value called? what quantity does it represent?