The arrow shows the movement of electric
charges through a wire connected to a battery.
What causes the electric charges to flow from one end of the
battery to the other?
a balance in electric potential
a balance in resistance
© a difference in electric potential
a difference in resistance

What is a difference between a mixture of elements and a mixture of compounds

Use the de broglie's wave equation to find the wavelength of an electron moving at 7.3 × 106 m/s. show your work. note: h = plank's constant (6.62607 x 10-34 j s)

In november 1987, a massive iceberg broke loose from the antartic ice mass and floated free in the ocean. the chunk of ice was estimated to be 98 mi long, 25 mi wide, and 750 ft thick. a typical backyard swimming pool contains about 24,000 gallons of water. how many of these pools could you fill from the water in this iceberg? (assume the iceberg is a rectangular solid of the above dimensions and consists of water only). express answer in scientific notation.