Consider the example given on Slide 14 of lecture note file Lec 23. What magnitude upward directed force is needed to be applied to the right end of the rod to hold the rod in static equilibrium so that it does not fall under the influence of gravity?

how many # of (+) ions does sodium and oxide have?

A tree loses water to the air through the transpiration process at a rate of 110 g / h. This water is replaced by an upward flow of sap through the stem vessels. If the stem contains 200 vessels, each 100 ?m in diameter, what is the speed of rise of the sap in each vessel? Consider the specific gravity of the sap 1040 kg / m3, that the whole process takes place in the vessels (that is, the entrance area is the same as the exit area) and remember to convert the units!

"Introduction to Linear Regression Analysis"

Two plants with white flowers, each from true-breeding strains, were crossed. All the plants had red flowers. When these plants were intercrossed, they produced an consisting of 177 plants with red flowers and 142 with white flowers.

Show that if X?X is in correlation form, ? is the diagonal matrix of eigenvalues of X?X, and T is the corresponding matrix of eigenvectors, then the variance inflation factors are the main diagonal elements of T(?^?1)T?.

Explain in detail, " What are housekeeping genes"?

suppose that consumer spending initially rises by $5 billion for every 1 percent rise in household wealth and that investment spending initially rises by $20 billion for every 1 percentage point fall in the real interest rate

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Find all points.

A golf ball of mass 0.045 kg is hit off the tee at a speed of 45 m/s. The golf club was in contact with the ball for 3.5 x10-3 s. Find the average force exerted on the ball by the golf club.

what is the answer?

what is the answer?

what is the answer?

what is the answer?

what is the answer?

what is the answer?

Use the data in LAWSCH85 for this exercise. (i) Using the same model as in Problem 4 in Chapter3 state and test the null hypothesis that the rank of law schools has no ceteris paribus effect on median starting salary. (ii) Are features of the incoming class of students- namely, LAST and GPA individually or jointly significant for explaining salary? (Be sure to account for missing data on LAST and GPA (iii) Test whether the size of the entering class (clsize) or the size of the faculty (faculty) needs to be added to this equation; carry out a single test. (Be careful to account for missing data on clsize and faculty.) (iv) What factors might influence the rank of the law school that are not included in the salary regression?

Why this answer is not correct?

What is the anwer?

Use the data in LAWSCH85 for this exercise. (i) Using the same model as in Problem 4 in Chapter state and test the null hypothesis that the rank of law schools has no ceteris paribus effect on median starting salary. (ii) Are features of the incoming class of students- namely, and individually or jointly significant for explaining salary? (Be sure to account for missing data on and (iii) Test whether the size of the entering class (clsize) or the size of the faculty (faculty) needs to be added to this equation; carry out a single test. (Be careful to account for missing data on clsize and faculty.) (iv) What factors might influence the rank of the law school that are not included in the salary regression? ????stata???????stata??

check the photo please

check the photo please

) The time taken to complete a particular type of a job is distributed approximately normally with mean 1.8 and standard deviation of 0.1hours. (i) Given that ‘’normal-time’’ work ends at 6pm and a job is started at 4.00pm, determine the probability that the job will need overtime. (3Marks) (ii) Calculate the estimated completion time (to the nearest minute) that should be set so that there is a 90% chance that the job is completed on time

Calculate ?H for the reaction: 2 NH3(g) + 1/2 O2(g) ? N2H4(l) + H2O(l) Given the following data: 2 NH3(g) + 3 N2O(g) ? 4 N2(g) + 3 H2O(l) ?H = ?1010. kJ N2O(g) + 3 H2(g) ? N2H4(l) + H2O(l) ?H = ?317 kJ H2(g) + 1/2 O2(g) ? 1 H2O(l) ?H = ?286 kJ N2H4(l) + O2(g) ? N2(g) + 2 H2O(l) ?H = ?623 kJ