Two equal length of wire made of the same material but of different diameters have an effective resistance of 0.8 ohm when they are connected in parallel. If the cross sectional area of one is four times of the other. Calculate the resistance of the thicker wire

Janelle made a hypothesis bout the uneven temperatures inside her house during winter. she believes that 50% of the ducts are blocked and she plans to investigate. if she wants to prove her hypothesis using scientific processes what should she do next?

A248-g piece of copper is dropped into 390 ml of water at 22.6 °c. the final temperature of the water was measured as 39.9 °c. calculate the initial temperature of the piece of copper. assume that all heat transfer occurs between the copper and the water. remember, the density of water is 1.0 g/m

Which simple machine is not part of this compound machine? a. lever b. pulley c. inclined plane d. wheel and axle