57.0 is it rounded to three sig figs. You count three spaces then round from there, which would be the zero and you would round down because the four is there.
The gravitational "range" will be the same whether or not there is mass in the way if gravity will have an effect on an object for 100 miles but there's 50 miles of land in the way, it will still affect the 100 mile radius. so it really does if the range is 4000 miles and the planet is 2000 miles thick then the pull will be weaker than that of a planet 1000 miles thick bc you are closer to the source of gravity
Answer:
B
Explanation:
I believe it is B but I am not entirely sure! don't do this is B doesn't sound or look right to you!
Answer:
Solution A is a Weak Alkali, Solution B is a strong Acid.
Explanation:
At pH 10, the colour is blue, therefore it's a weak alkali.
At pH 1, the colour is red, therefore it's a strong Acid.
