if the message number is 64bits long. how many messages could be numbered. b) choose an authentication function for secure channel, the security factor required is 256bits.

Calculate the angular separation of two Sodium lines given as 580.0nm and 590.0 nm in first order spectrum. Take the number of ruled lines per unit length on the diffraction grating as 300 per mm?(A) 0.0180(B) 180(C) 1.80(D) 0.180 2. consider the integral z 6 2 1 t 2 dt (a) a. write downbut do not evaluatethe expressions that approximate the integral as a left-sum and as a right sum using n = 2 rectanglesb. Without evaluating either expression, do you think that the left-sum will be an overestimate or understimate of the true are under the curve? How about for the right-sum?c. Evaluate those sums using a calculatord. Repeat the above steps with n = 4 rectangles. 8. for your business idea, what factors you can your team eliminate, reduce, raise, and create. describe why the factors that you selected for the value curve are important to customers. the conversion of 4-pentanoylbiphenyl to 4-pentanylbiphenyl with hydrazine and potassium hydroxide is an overall of carbon? a. oxidation b. not a redox c. reduction when the government increases taxes on individuals, consumption (click to select) and the ad curve (click to select) . the process by which living things give rise to offspring is called Let a belong to a ring R. let S= (x belong R such that ax = 0) show that s is a subring of R Consider three identical metal spheres, a, b, and c. sphere a carries a charge of 5q. sphere b carries a charge of -q. sphere c carries no net charge. spheres a and b are touched together and then separated. sphere c is then touched to sphere a and separated from it. lastly, sphere c is touched to sphere b and separated from it. required:a. how much charge ends up on sphere c? b. what is the total charge on the three spheres before they are allowed to touch each other? The net force on any object moving at constant velocity is a. equal to its weight. b. less than its weight. c. 10 meters per second squared. d. zero. a ball that is dropped from a window hits the ground in 7 seconds. how high is the window? (give your answer in feet; note that the acceleration due to gravity is 32 ft/s.) the value of the sum of squares due to regression, ssr, can never be larger than the value of the sum of squares total, sst. True or false? how many teenagers (people from ages 13-19) must you select to ensure that 4 of them were born on the exact same date (mm/dd/yyyy)? simplify your answer to an integer. larghe amounts of long-stored organic material will bgin to decay and release carbon dixxiode when extneive areas of What is the absolute magnitude of the reduction in the variation of Y when times is introduced into the regression model? What is the relative reduction? What is the name of the latter measure? An open-top box with a square bottom and rectangular sides is to have a volume of 256 cubic inches. Find the dimensions that require the minimum amount of material. which describes the enthalpy change associated with an endothermic reaction? when conducting assessments of the organization's indirect compensation, the assessment should look at all of the following except ________. A. What employees prefer to see the organization doingB. What the organization is doingC. What benefits are the least expensive, regardless of employee preferencesD. What other organizations are doing Which is an appropriate unit for a flow rate?O Orders per dayO CurrencyO CustomersO Centimeters QUESTION 9Lisetta is working with a set of data showing the temperature at noon on 10 consecutive days. She adds todays temperature to the data set and, after doing so, the standard deviation falls. What conclusion can be made?-Todays temperature is lower than on any of the previous 10 days.-Todays temperature is lower than the mean for the 11 days.-Todays temperature is lower than the mean for the previous 10 days.-Todays temperature is close to the mean for the previous 10 days.-Todays temperature is close to the mean for the 11 days. You want to estimate the number of eighth-grader students in your school who find it relaxing to listen to music. You consider two samples. Fifteen randomly selected members of the band. Every fifth student whose name appears on an alphabetical list of eighth-grade studentsPlease show work