Questions by David Webb

Questions by David Webb

In a neutral calcium atom, there are 20 protons, 20 neutrons, and 20 electrons. If a calcium atom loses 2 electrons, what will be the calcium atom's charge?

asked Nov 14, 2017

1 answer

4 votes

40.8k views

Two objects attract each other with gravitational force of 25 newtons from a given distances. If the distances between the two objects is reduced by a factor of 5, what is the changed force of attraction

asked Aug 21, 2017

2 answers

5 votes

186k views

If the density of an object is 60 g/cm^3 and its mass is 20 grams, what is its volume in cm^3? A) 0.33 B) 3 C) 80 D) 1200

asked Jun 21, 2016

1 answer

5 votes

22.4k views

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