Im sure the answer is letter B
Answer:19ohms
Explanation:
equivalent resistance=5+2+12
equivalent resistance=19ohms
A) leaving a copper penny in vinegar until it turns green
Metals are not brittle so it can’t be the first one or the third one, both metalloids and metals are shiny so it can’t be the second one. Therefore, it would be the last one because both metalloids and metals are shiny and both are solids at room temperature because it is not a high enough melting point.
ANSWER: Both are shiny and are solid at room temperature.
It takes twice the force to produce the same acceleration in the 2kg rock.
