Answer:
c
Explanation:
Increasing the length of string to which the bob is attached, increases the radius of the circle on which the bob moves; and therefore, the frequency, or number of back and forth swings in a set time frame, will be less.
Answer:
a. active volcanoes river valleys feeding into surface lakes of liquid water surfaces with very few impact.
Explanation:
A:a diver jumping Off a diving Board And falling to the swimming pool below
Explanation:
a potassium ion has a charge of 1+.
Magnesium is in the second column and therefore has 2 electrons in its outermost shell. It would tend to lose two electrons and form a +2 ion. Potassium is in the first column and therefore has 1 electron in its outermost shell. It would tend to lose one electron and form a +1 ion.
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4. 1 and 2 only.
1. the downward force is the force of gravity.
<span>2. The upward force exerted is the Normal reaction from the floor.</span>