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Mashcka [7]
3 years ago
9

Which technological advancement made the Pony Express unnecessary?

Physics
2 answers:
Vikki [24]3 years ago
7 0
Telegraph! Because telegraphs were used to communicate and to (at that time) send messages rapidly.
Sergeu [11.5K]3 years ago
6 0
The answer is Telegraph
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According to the kinetic molecular therory, the pressure of a gas in a container will increase if the
Masja [62]

According to the kinetic molecular theory, the pressure of a gas in a container will increase if the number of collisions with the container wall increases.

<u>Explanation:</u>

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3 years ago
Boron (B) has an atomic number of 5 and an atomic mass of 11. Boron has _____.
Neko [114]

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6 0
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A 22kg Accelerates at a rate of 2.3 m/s. What is the magnitude of the net force acting on the bike?
Tcecarenko [31]

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