question_answer

A chef, on finding his stove out of order, decides to boil the water for his wife's coeffe by shaking it in a thermos flask. Suppose, that he uses tap water at 15°C and chef making 30 shakes each minute. Neglecting any loss of thermal energy by the flask, how long must he shake the flask until the water reaches 100°C?

A)                                                                        \[9.13\times {{10}^{3}}N/{{m}^{2}}\]                

B)                                               \[\text{5}.\text{25}\times \text{1}{{0}^{\text{3}}}\text{min}\]

C)                                                             \[\left[ \text{FL}{{\text{T}}^{-\text{2}}} \right]\]                

D)                                                \[\left[ \text{F}{{\text{L}}^{\text{2}}}{{T}^{-\text{2}}} \right]\]