Find a partner. Put your hands on the shoulders of your partner and have him/her do the same. Move your feet away from each other one step at a time. Forming an arch. As long as your feet are firmly on the floor your arch will remain in tact and you won't fall. Why? .... Read More

what is the effect of stimualation of the sympathetic nerve .... Read More

The adaptations of plants with C4 and CAM photosynthesis .... Read More

1-) A quality control department noted took a sample of 40 product, and found the mean number of defect to be 6.15, with a standard deviation of 2.53 . The distribution was known to be normal. Construct a 95 percent confidence interval for the mean number of defects 2-) A corporation is trying to estimate the mean amount an employeeâ€™s spends on dental care. They survey 45 employees, and find a mean amount spent of $1820, with a sample std dev of $660. Find a 95% confidence .... Read More

Consider a flying-wing aircraft made using a NACA 2412 airfoil with a wing area of 250 ft ^2, a wing span of 50 ft, and a span efficiency factor of 0.9. If the aircraft is flying at a 6 deg angle of attack and a Reynolds number of approximately 9x10^6, what are CL and CD for the flying wing? .... Read More