Suppose the conducting wire (with resistance r) was replace with one of the same material but has its dimension doubled (the length and the radius having twice their original value. what is the new resistance in comparison to the previous resistance?

How much energy must a refrigerator absorb from 225 g of water so that the temperature of the water will drop from 35°c to 5°c

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.

Heterogeneous mixture with larger particles that never settle is