Two cars weigh 20000 Newton each. One car is parked. The other vehicle traveling with a speed of 55 miles per hour collides with the parked car in an inelastic collision. How much is the speed of the cars after the collision? ​

Which boundary is associated with the building of the himalaya mountains? convergent transform divergent hot spot

At 20∘c, the hole in an aluminum ring is 2.800 cm in diameter. you need to slip this ring over a steel shaft that has a room-temperature diameter of 2.804 cm . 1. to what common temperature should the ring and the shaft be heated so that the ring will just fit onto the shaft? coefficients of linear thermal expansion of steel and aluminum are 12×10−6 k−1 and23×10−6 k−1 respectively.

Iron is a transition metal with multiple oxidation numbers. (answer the following) a. what is the iron (ii) ion? how does it differ from the iron (iii) ion? b. if iron were to bond with oxygen, predict the formula for each oxidation number of iron. c. how would each formula be named?