Chapter d3, problem d3/057 incorrect a flatbed truck going 113 km/h rounds a horizontal curve of 259-m radius inwardly banked at 11°. the coefficient of static friction between the truck bed and the 157-kg crate it carries is 0.63. calculate the friction force f acting on the crate. the friction force is positive if it acts up and to the right, negative if it acts down and to the left.

An insurance company wants to know if the average speed at which men drive cars is higher than that of women drivers. the company took a random sample of 27 cars driven by men on a highway and found the mean speed to be 72 miles per hour with a standard deviation of 2.2 miles per hour. another sample of 18 cars driven by women on the same highway gave a mean speed of 68 miles per hour with a standard deviation of 2.5 miles per hour. assume that the speeds at which all men and all women drive cars on this highway are both approximately normally distributed with unknown and unequal population standard deviations.

Need people build a dam to create a reservoir that supplies water a nearby city needs. describe two ways this action will likely affect the water cycle in the local environment. (5 points) worth 20 points

The first law of thermodynamics is as follows: ∆u=q-w , which means in a system is equal to added, minus done by the system. the units for these variables are in .