Throw away food left out at room temperature for more than two hours (one hour if the temperature was above 90 degrees f). true false

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

What is the final velocity of the initial velocity of 25 and -50?

Which lists the pairs of plates in order from least to greatest in terms of the work done to move the electron?