Bitcoin trading platform coinbee

1. If you don't know anything, you can ask me.

2. Okcoin international station adopts bank level security technologies such as cold storage, SSL and multiple encryption, and has a security team with ten years of financial security experience.
it has a professional high-speed matchmaking engine GSLB and distributed cluster technology, which are distributed in global data centers
7 × 24-hour system stable, 7 × 24-hour customer service online, 7 × 24-hour technical support. You can log in www.okcoin.cn Understand, recharge and withdraw US dollars. Bitcoin / US dollar transaction is fast, safe and reliable. And has multi terminal web, PC, app, market timely grasp, trading anytime and anywhere.

3. According to the theme, the work done by gravity is equal to that done by escalator:
the kinetic energy at the beginning and end is 0.
W + 0 = MGH + 0
W = 500 * 4 * 10 = 20000j

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