Anupriya has observed many examples of forces acting around her. She has listed the examples into three groups based on which kind of force acting: Group 1 : A car screeching to a halt, a matchstick lighting up when struck.
Group 2: A woman skiing down a mountain slope, the rise of ocean tides.
Group 3: A ship floating in the ocean, a parachute slowing the fall of a sky diver.

In which group Anupriya should put falling of a tree.
Group 1

Group 2

Group 3

None of the above

14 days is the half-life of phosphorus-32

the correct answer is b. a strong acid completely dissociates to its ions when dissolved in water. completely dissociates to and ions. a is incorrect because does not fully ionize to and ions and some remain as the compound . c and d are incorrect because, and do not fall into the category of bronsted lowry acids. a bronsted lowry acid is a proton donor and since both molecules do not have a proton to donate they are not bronsted lowry acids. likewise,   if we use the lewis acid definition, they cannot be acids. a lewis acid is an electron pair acceptor. both and have a complete octet so can not accept any electrons which disqualifies them as acids.

c. is the answer

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