Myelination improves the efficiency of the central nervous system in the same way that a. talking to an infant speeds the baby's ability to produce a first word
b. reducing the distance between two children playing catch reduces the time it takes for a baseball to travel from one child to the other
c. the ingestion of certain chemicals (for example, steroids) can improve overall muscle development
d. the insulation around an electrical extension cord improves its efficiency

An electromagnet is a device in which moving electric chargers in a coil of wire create a magnet.whats one advantage of using electromagnetic in devices

Charge is distributed along the entire x-axis with uniform density λ. how much work does the electric field of this charge distribution do on an electron that moves along the y-axis from y = a to y = b? (use the following as necessary: a, b, ε0, λ, and q for the charge on an electron.)

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?