какое количество теплоты нужно передать льду массой 100г , при температуре -0 градусов чтобы расплавить

Atrain departs from its station at a constant acceleration of 5 m/s. what is the speed of the train at the end of 20s?

The temperature at a point (x, y) is t(x, y), measured in degrees celsius. a bug crawls so that its position after t seconds is given by x = 6 + t , y = 8 + 1 3 t, where x and y are measured in centimeters. the temperature function satisfies tx(3, 9) = 5 and ty(3, 9) = 4. how fast is the temperature rising on the bug's path after 3 seconds? (round your answer to two decimal places.)

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