Calculate the change in potential energy of 8,000,000 kg of water dropping 50.0 m over niagara falls

Which changes of state do the labels represent? a: b: c:

Which of the following is not a means to accelerating? question 4 options: a)increase speed b)remain still c)decrease speed d)change direction

Ice at 0.0∘c has a density of 917 kg/m3. a 3.00 cm3 ice cube is gently released inside a small container filled with oil and is observed to be neutrally buoyant. what is the density of the oil?