Abrick of 203 × 102 × 57 mm in dimension is being burned in a kiln to 1250°c, and then allowed to cool in a room with ambient air temperature of 30°c and convection heat transfer coefficient of 5 w/m2·k. the brick has properties of rho = 1920 kg/m3, cp = 790 j/kg·k, and k = 0.90 w/m·k. calculate the time required to cool a brick from 1250°c to a temperature difference of 5°c from the ambient air temperature. (round the answer to 2 decimal places.) 7.18 ± 5% hours.

2.22/3.33 points | previous answers tamucolphysmechl1 4.pre.002. ask your teacher my notes question part points submissions used on a frictionless air track, a blue glider with mass 0.200 kg is moving to the right with a speed of 8.00 m/s. it strikes a red glider that has mass 0.600 kg and that is initially at rest. after the collision, the blue glider is moving to the left with a speed of 2.40 m/s. (a) what are the magnitude and direction of the velocity of the red glider after the collision? magnitude 3.33 m/s correct: your answer is correct. direction correct: your answer is correct. (b) is this collision elastic?

The solid that is formed and usually sinks to the bottom of a solution is the

What is the single most important equation in all of physics?