A metal rod with a 4 millimeter radius is held in tension. When a load of 15,700 N is introduced, a reduction of 5E-3 millimeter in diameter is recorded. What would be the Poisson's ratio for this material if its modulus of elasticity is 140 GPa

Aresistor with an unknown resistance is connected in parallel to a 9 ω resistor. when both resistors are connected in parallel to an emf source of 21 v, the current through the unknown resistor is measured with an ammeter to be 4 a. what is the resistance of the unknown resistor? answer in units of ω.

You have 80 g of 60oc water and 80 g or 10oc water. what is the final temperature when the two are mixed? explain.

What are the primary colors of visable light