When a cold drink is taken from a refrigerator, its temperature is 5°c. after 25 minutes in a 20°c room its temperature has increased to 10°c. (round your answers to two decimal places.) (a) what is the temperature of the drink after 55 minutes? 13.853 correct: your answer is correct. °c (b) when will its temperature be 15°c?

Part a)

Part b)

Explanation:

As per Newton's law of cooling we know that

now we will have

now we will have

now we will have

so we will have

now we will have

Now we have

k = -0.016

now after 55 min

Part b)

now when temperature is 15 degree C

then we will have

when insulating materials rub against each other, they may become electrically charged . electrons , which are negatively charged, may be 'rubbed off' one material and on to the other. the material that gains electrons becomes negatively charged. the material that loses electrons is left with a positive charge.