Gabe throws a pumpkin onto Mr. Gillette's damaged car. At first Gabe is holding the pumpkin motionless (V = 0 m/s). Two seconds later (t=2 seconds), the pumpkin leaves Gabe's hands traveling at 300 m/s. Assuming it does not change direction, what was the acceleration of the pumpkin?

According to the tide table below what time of day will the highest tide occur?

Which element has the lowest electronegativity? calcium(ca) gallium(ga) selenium(se) bromine(br)

4.25g sample of solid ammonium nitrate dissolves in 60.0g of water in a coffee-cup calorimeter, the temperature drops from 22.0 c to 16.9 c. assume that the specific heat of the solution is the same as that of pure water. calculate delta(h) (in kj/mol nh4no3) for the solution proces.