Questions asked
For each of the following pairs of weak acids, indicate the stronger of the two by entering < or > HF ($K_a$ = 6.6 x $10^{-4}$) Blank 1 $HNO_2$ (4.4 x $10^{-4}$) $CH_3NH_3^+$ ($K_a$ = 2.3 x $10^{-11}$) Blank 2 $NH_4^+$ ($K_a$ = 5.6 x $10^{-10}$) $N_2H_5^+$ ($pK_a$= 8.23) Blank 3 $C_3H_9NH^+$ ($pK_a$ = 9.81) $C_6H_5COOH$ ($K_a$ = 6.3 x $10^{-5}$) Blank 4 $HClO$ ($pK_a$ = 7.54)
Homework #1, PHYS403 Fall 2024 3. (25 points) Voltage, Electric field, force, acceleration, velocity, and distance. When the terminals of a 200 volts battery are connected to two large parallel horizontal plates 2.0 cm apart, the resulting charges on the plates produce an electric field E in the region between the plates that is very nearly uniform an has magnitude E = 1.0x 10^4 N/C. Suppose the lower plate has positive charge, so that the electric field is vertically upward, as shown in figure below. (The thin arrows represent the field.) If an electron is released from rest at the upper plate, what is its speed just before it reaches the lower plate? The mass of an electron is me = 9.11x10^-32 kg. Explain each step in your work to get the full credit. The equation or answer with no explanation will result in zero point. Add the unit after each number. Missing units after the numbers will get points reduced. The thin arrows represent the uniform electric field. 10 E F = -eE 2.0 cm 200 V y
bit monitoring instructions to perform a specific instruction when bit is 1
The pioneer paleontologist who realized from their anatomy that the ancient plesiosaurs which once inhabited the seas near France were reptiles, was Comte de Buffon. Georges Cuvier. Jean-Baptiste de Lamarck. Georges Pompidou. Marcel Marceau.
(a) Give the five-number summary for the distribution, and (b) draw a box-and-whisker plot. 11, 23, 28, 16, 29, 34, 45, 16, 43, 29, 34, 34, 46, 43, 54
If $D$ is the region enclosed by $y = \frac{5}{x}$, $x = 5$, and $y = 5x$. Then $\iint_D \frac{1}{6}y \, dA = -\frac{760}{9}$. Select one: True False
Question 2: A file has r=200,000 STUDENT records of fixed-length. Each record has the following fields: NAME (30 bytes), SSN (9 bytes), ADDRESS (40 bytes), PHONE (10 bytes), BIRTHDATE (8 bytes), SEX (1 byte), MAJORDEPTCODE (4 bytes), MINORDEPTCODE (4 bytes), CLASSCODE (4 bytes, integer), and DEGREEPROGRAM (3 bytes). An additional byte is used as a deletion marker. The file is stored on the disk whose parameters are given in Question 1. (a) Calculate the record size R in bytes. R = (30 + 9 + 40 + 10 + 8 + 1 + 4 + 4 + 4 + 3) + 1 = 114 bytes (b) Calculate the blocking factor (bfr) and the number of file blocks b assuming an unspanned organization. (c) Calculate the average time it takes to find a record by doing a linear search on the file if 1. the file blocks are stored contiguously, and 2. if the file blocks are not stored contiguously. (d) Assume the file is ordered by SSN; calculate the time it takes to search for a record given its SSN value by doing a binary search.
Fill in the table below by providing the running time for every one of the indicated operations and indicated data structure (DaSt) of size n containing distinct keys. Fill entries by writing n to denote for example running time of O(n) or \(\Theta(n)\), 1 to denote \(\Theta(1)\), and so on. We fill in the entry for Succ(z) into an SDL. Since it is \(\Theta(1)\) we write 1. (a) Ins, Sea is for Insertion and Search of a key x. (b) FindMin or FindMax determine and return the value of the key with the smallest or largest value among the keys of the DaSt;the key remains in it. (c) ExMin or Exmax perform FindMin or FindMax respectively and in addition remove the corresponding key from DaSt. (d) Del deletes the record referenced/pointed/indexed by z i.e. the location that will be deleted is known. (e) Succ is the successor of z, i.e. the smallest among all the elements greater than or equal to the value pointed by reference/pointer/index z. For removal operations the data structures must be maintained in likewise form after the operation (i.e. there are no gaps or locations with no keys). SA, RA Sorted Array (SA) and Reverse-Sorted Array with elements ordered appropriately in increasing or decreasing order. SLL, RLL Sorted SinglyLinked List (SLL) and Reverse-Sorted SinglyLinked List (RLL) and the first value (smallest or largest) key pointed by a head pointer; no tail pointer. SDL, RDL Sorted DoublyLinked List (SDL) and Reverse-Sort Doubly LinkedList defined similarly as be- fore; no tail pointer again. RA RLL SDL Ins(x) Del(z) Sea(x) FindMin ExMax Succ(z) 1
An autotriploid has three sets of homologous chromosomes in each cell instead of the usual pairs of homologous chromosomes present in diploid individuals. Calculate the number of chromosomes in an autotriploid cell, given an n = 18. Number of Chromosomes: Chromosomes
Discuss about Monetary and/or Fiscal Policy of the US during the Great Recession that began in 2007. Provide insight as to how the policy discussed helped, hindered or had no impact on the economy during that time frame and after. cite if there's any reference.