40 points, due tonight, please explain, I keep getting different answers 2. A ball of mass 0.2 kg is placed in a small cup on a vertical spring with a spring constant 400 N/m.
The spring is compressed 0.1 m and released. Ignoring air resistance, the maximum height of the
ball above its starting point is most nearly
(A) 20 m (B) 10 m (C) 2 m (D) 1 m

Astudent is given an assignment to demonstrate diffraction. he takes a photograph of a straw in a glass of water. the straw appears bent at the water level. which best describes this example? a) this is a good example of diffraction. b) this is an example of dispersion and not diffraction. c) this is an example of refraction and not diffraction. d) this is an example of reflection and not diffraction.

You win the lottery and decide to impress your friends by exhibiting a million-dollar cube of gold. at the time, gold is selling for $ 426.60 per troy ounce, and 1.0000 troy ounce equals 31.1035 g. -how tall would your million-dollar cube be? en cm

Under normal conditions, describe how increasing the temperatures effects the solubility of a typical salt