10 pts
What is the percent error for a mass measurement of 17.2 g, given that the correct value is 20.4 g? Answer in units of %.

The agent of mechanical weathering in which rock is worn away by the grinding action of other rock particles is call

This question is about electrolysis. metal spoons can be coated with silver. this is called electroplating. suggest one reason why spoons are electroplated?

2pos suppose an object in free fall is dropped from a building. its starting velocity is 0 m/s. ignoring the effects of air resistance, what is the speed (in m/s) of the object after falling 3 seconds? give your answer as a positive decimal without units. answer here