After a projectile is fired into the air, what is the magnitude of the acceleration in the y direction? (Assume no air resistance.)
O A. 4.9 m/s?
B. 19.6 m/s2
O C. O m/s2
O D. 9.8 m/s2

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

If 2 moles of co_2 at 2l and 500k are expanded reversibly to 20l, more work can be obtained from an adiabatic process than from an isothermal process. is the above statement true or false?

Which notation is used to represent an alpha particle? a. b. c. d.