Answer is concentric circles
Answer:
Silver has greater electronegativity (pull on electrons) than copper, so it will be reduced rather than oxidized. Silver ions will plate out on copper metal. Sir the coating of iron with copper surface can be referred as IRON-COPPER PLATING.
Explanation:
Iron is used for the electroplating of so copper because iron falls above copper in the electrochemical series whereas silver will fall off below the copper in electrochemical series that makes it not reliable for the electroplating purpose
Answer:
Explanation:
According to the Archimedes' Principle, the buoyant force exerted on the helium ballons is equal to the weight of displaced air. A simplified scheme for the system person-ballons is presented below. The correspondent equation of equilibrium is:
The minimum net volume is:
The volume of each ballon is:
The minimum quantity of ballons needed to lift Josiah is:
Answer:
Explanation:
Given
Dimension of Plastic sheet is
Charge on sheet
Charge density
Sphere has mass of
If sphere is suspended motionless then its weight is balanced by repulsion force
Repulsive force
where E=Electric field due to sheet
The answer is stomata. The process through which this occurs is known as transpiration.
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