QUES: Surely, you have noticed the tall poles along the roadside. Do you know what is on top of those poles? Thats right, wires that carry electric current. These wires carry electric current to your home. But what is electric current? Electric current is actually the flow of electrons. You may recall, an electron is the outer-most particle in an atom. They have a negative charge. Electricity is the continuous flow of these particles. Electrons are able to move through wires. Their speed can even be measured. The SI unit for electric current (or speed) is the ampere (A). Ampere is often shortened to amp. Electric current may flow in just one direction, or it may keep reversing direction. Direct current (DC) flows in only one direction. Direct current is what is used in devices like flashlights. Alternating current (AC) flows in two directions. This is the type of current that flows into your home through wires.
Do you have any questions?
MY QUESTION: What is on top of the poles on the roadside?

QUES: Callimaco is taken by the beauty of Lucrezia , but she is the loyal wife of Nicia , a rich and foolish lawyer . Callimaco hires the service of a shady ' fixer ' named Ligurio to aid in his quest to sleep with her . Lgurio informs Callimaco that Nicia and Lucrezia are anxious to have a child . With the fixer's help , . Callimaco masquerades as a doctor and convinces Nicia that the best way for Lucrezia to conceive a child is by her taking a potion made from the Mandrake Root . He lies and warns Nicia that the first man to sleep with Lucrezia after she has taken the potion will die within eight days . Together they devise a plan to kidnap a stranger to sleep with Lucrezia and draw out the poison . Callimaco then disguises himself and arranges to be the one who is kidnapped . Lucrezia is an honorable woman and does not at first agree to meet with the stranger . Nicia gets both Lucrezia's mother , a woman of ill repute , and her confessor Brother Timoteo , a priest of low morals , to aid in convincing Lucrezia of the necessity of the plan . After finally sleeping with Lucrezia , Callimaco confesses everything . Lucrezia gives thought to the duplicity of her husband , her mother , and her confessor , and decides that she now wants Callimaco as a lover forever . Callimaco gets what he had desired and everyone else continues to believe that each had outwitted the others .
Do you have any questions?
MY QUESTION: Why is Lucrezia hesitant to meet with the stranger?

QUES: "What goes up must come down." You have probably heard that statement before. At one time this statement was true, but no longer. Since the 1960s, we have sent many spacecraft into space. Some are still traveling away from Earth. So it is possible to overcome gravity. Do you need a giant rocket to overcome gravity? No, you actually overcome gravity every day. Think about when you climb a set of stairs. When you do, you are overcoming gravity. What if you jump on a trampoline? You are overcoming gravity for a few seconds. Everyone can overcome gravity. You just need to apply a force larger than gravity. Think about that the next time you jump into the air. You are overcoming gravity for a brief second. Enjoy it while it lasts. Eventually, gravity will win the battle.
Do you have any questions?
MY QUESTION: What statement is no longer true?

QUES: Early in chapter 5 we introduced, along with Khalid Sheikh Mohammed, two other men who became operational coordinators for al Qaeda: Khallad and Nashiri. As we explained, both were involved during 1998 and 1999 in preparing to attack a ship off the coast of Yemen with a boatload of explosives. They had originally targeted a commercial vessel, specifically an oil tanker, but Bin Laden urged them to look for a U.S.warship instead. In January 2000, their team had attempted to attack a warship in the port of Aden, but the attempt failed when the suicide boat sank. More than nine months later, on October 12,2000, al Qaeda operatives in a small boat laden with explosives attacked a U.S. Navy destroyer, the USS Cole. The blast ripped a hole in the side of the Cole, killing 17 members of the ship's crew and wounding at least 40. The plot, we now know, was a full-fledged al Qaeda operation, supervised directly by Bin Laden. He chose the target and location of the attack, selected the suicide operatives, and provided the money needed to purchase explosives and equipment. Nashiri was the field commander and managed the operation in Yemen. Khallad helped in Yemen until he was arrested in a case of mistaken identity and freed with Bin Laden's help, as we also mentioned earlier. Local al Qaeda coordinators included Jamal al Badawi and Fahd al Quso, who was supposed to film the attack from a nearby apartment. The two suicide operatives chosen were Hassan al Khamri and Ibrahim al Thawar, also known as Nibras. Nibras and Quso delivered money to Khallad in Bangkok during Khallad's January 2000 trip to Kuala Lumpur and Bangkok. In September 2000, Bin Laden reportedly told Nashiri that he wanted to replace Khamri and Nibras. Nashiri was angry and disagreed, telling others he would go to Afghanistan and explain to Bin Laden that the new operatives were already trained and ready to conduct the attack. Prior to departing, Nashiri gave Nibras and Khamri instructions to execute the attack on the next U.S.warship that entered the port of Aden.
Do you have any questions?
MY QUESTION:
What roles did Bin Laden, Khallad, and Nashiri have in al Qaeda?