In this experiment, you will be using a “coffee cup” calorimeter to measure the rate of heat loss for several substances and determining which of the substances is the best insulator. You will be testing the insulating capabilities of three types of fabric and the control will be air. The three types of fabric are: Test Sample 1: 52% cotton/48% poly fabric Test Sample 2: 100% acrylic fabric Test Sample 3: 80% cotton/20% poly fabric For the control, and each test sample, you will be measuring the amount of heat lost by the water in the calorimeter over 6 minutes, taking the temperature every 30 seconds. Be sure to record your data on your data sheet . View the animation to complete this experiment.

the second one and the forth one are in the purple because they are opinions and the rest are in the yellow

explanation:

568.98

explanation:

its math

answer: at 24 february, 2014 the population gets twice of its initial population.

explanation:

since we have given that

the population for alpha city, t years after january 1, 2004 is given as

first we find out the initial population, i.e. t=0,

so, our quadratic equation becomes,

according to question, we have said that if the population has twice its initial population, then it becomes

so, time taken to reach this above mentioned population is given by

now, we know that time can't be negative so, we take t=9.149 years.

hence, at 24 february, 2014 the population gets twice of its initial population.