Robots have been around since the 3rd century BC. At that time, they were mainly invented as toys to amuse the king or emperor.
2 answers:
Answer:
B. I and II only
Explanation:
For example, unmanned space probes can gather information more easily than a human can.
Closer to home, many biochemical research and pharmaceutical industries use pipetting robots for their repetitive pipetting chores.
C is wrong. Machines can do things faster than any human ever could and not get tired, but humans possess the intelligence, expertise, and skills to use the robots most efficiently and to solve problems when things go wrong.
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Answer: D=8.27 g/cm³
Explanation:
Density is mass/volume. Mass is in grams and volume is in liters. In this case, the problem wants our volume to be in cm³. All we need to do is to make some conversions to convert kg/m³ to g/cm³.
With this equation, the m³ and kg cancel out, and we are left with g/cm³.
D=8.27 g/cm³