4. A 3.8 kg sample of an unknown metal is heated to 396°C and then submerged in 1.0 L of 22°C water. The final temperature of the metal and water both is 89°C. Determine the unknown substance. (5 marks)

By composing the vector a = [15 x - 12 y] with the vectors b = [bx - 17 y], c = [- 10x + cy], d = [8 x - 10 y], the result is a vector that only has coordinate on the axis of the

abscissa, and its value is - 12. Determine the module and direction of the vectors b and cExplanation:

the independent variable, or the one that is intentionally manipulated is the speed.

measure their densities same density, same sub