Material Specific Heat (J/kg) Water 4,184
Wood 1,800
Aluminum 900
Concrete 880
Gold 129

Questions

1) How much heat energy is needed to raise the temperature of 5.0 gold from 20 degrees Celsius to 200 degrees Celsius?

2) How much heat energy is needed to raise the temperature of 6.0 wood from 20 degrees Celsius to 200 degrees Celsius?

3) How much heat energy is needed to raise the temperature of 10.0 concrete from 20 degrees Celsius to 150 degrees Celsius?

Anybody wanna ? (picture included? )

7. see worksheet 1 for values of variables x1, x2 and x3 and answer the following questions: a. for each variable find the mean, median, coefficient of skewness, range and population standard deviation. b. compared to variable x1, how are the mean and median affected by extreme values (outliers) seen in x2 and x3. c. is the median or mean the better measure of location for x2 and x3? explain. d. explain the differences in the magnitudes of the skewness coefficients for the three variables. e. what is the relationship between the range and standard deviation looking across the three variables?

You have two photos of a person walking. one shows the person at the corner of third and main streets, the other shows the person at the corner of tenth and main streets. there are lampposts at every corner in this town, and the first picture shows it to be 10: 32: 00 exactly. the second picture shows it to be 10: 49: 30. you know three facts: (1) all of the clocks are synchronized; (2) there are exactly 12 equal-sized blocks per kilometer in this town; and (3) the streets that cross main in this area are numbered consecutively, with no interruptions. what is the person’s average speed in kilometers per hour?