2.30 suppose that the radius of a typical cell is 10 mm and that inside it 106 atp molecules are hydrolyzed each second. what is the power density of the cell in watts per cubic meter (1 w = 1 j s−1)? a computer battery delivers about 15 w and has a volume of 100 cm3. which has the greater power density, the cell or the battery?

In which situation has the independent variable for the experiment been changed? check all that apply. changed from counting the number of duckweed at day 0 and day 14 to counting them every day changed from testing duckweed growth in beakers to testing duckweed growth in large outdoor tanks changed from testing the effect of ph on duckweed growth to testing the effect of light levels on duckweed growth changed from testing the effect of acid ph on duckweed growth to testing the effect of basic ph on duckweed growth

Use the right-hand rule for magnetic force to determine the charge on the moving particle. this is a charge.

Astudent creates a model of a closed ecosystem by filling a glass tank half full with water, then adding 10 snails and two small aquatic plants. the next day, all the snails are dead. what is the most likely cause of their death?