If a ball is running down a ramp, why is it that when you change the height of the ramp, the ... of the ramp, then you will increase the acceleration of a ball which rolls down the ramp.
Answer:
its atomic number
Explanation:
which is defined as the number of units of positive charge (protons) in the nucleus. For example, if an atom has a Z of 6, it is carbon, while a Z of 92 corresponds to uranium.
Orbital s is always the first one to fill up
Answer:
The alloys used to make coins are usually Copper, Zinc and Nickel. There are several reasons: The alloy must be very hard to withstand the use and circulation of the coin to not wear out soon. Then, the alloy must have a value less than the value of the currency to avoid that are founded and sold as mere metals.
Explanation:
