Problem: Please answer a question about the following article about Incandescent light bulb:
Incandescent lamps are nearly pure resistive loads with a power factor of 1. This means the actual power consumed (in watts) and the apparent power (in volt-amperes) are equal. Incandescent light bulbs are usually marketed according to the electrical power consumed. This is measured in watts and depends mainly on the resistance of the filament, which in turn depends mainly on the filament's length, thickness, and material. For two bulbs of the same voltage, type, color, and clarity, the higher-powered bulb gives more light.
What does a power factor of 1 mean?
A: the actual power consumed (in watts) and the apparent power (in volt-amperes) are equal
Problem: Please answer a question about the following article about Umayyad Caliphate:
However many early history books like the Islamic Conquest of Syria Fatuhusham by al-Imam al-Waqidi state that after the conversion to Islam Muawiyah's father Abu Sufyan ibn Harb and his brothers Yazid ibn Abi Sufyan were appointed as commanders in the Muslim armies by Muhammad. Muawiyah, Abu Sufyan ibn Harb, Yazid ibn Abi Sufyan and Hind bint Utbah fought in the Battle of Yarmouk. The defeat of the Byzantine Emperor Heraclius at the Battle of Yarmouk opened the way for the Muslim expansion into Jerusalem and Syria.
Along with Syria, where did the Muslims extend their control after the Battle of Yarmouk?
A: Jerusalem
Problem: Please answer a question about the following article about Arnold Schwarzenegger:
On April 26, 1986, Schwarzenegger married television journalist Maria Shriver, niece of President John F. Kennedy, in Hyannis, Massachusetts. The Rev. John Baptist Riordan performed the ceremony at St. Francis Xavier Catholic Church. They have four children: Katherine Eunice Schwarzenegger (born December 13, 1989 in Los Angeles); Christina Maria Aurelia Schwarzenegger (born July 23, 1991 in Los Angeles); Patrick Arnold Shriver Schwarzenegger (born September 18, 1993 in Los Angeles); and Christopher Sargent Shriver Schwarzenegger (born September 27, 1997 in Los Angeles). Schwarzenegger lives in a 11,000-square-foot (1,000 m2) home in Brentwood. The divorcing couple currently own vacation homes in Sun Valley, Idaho and Hyannis Port, Massachusetts. They attended St. Monica's Catholic Church. Following their separation, it is reported that Schwarzenegger is dating physical therapist Heather Milligan.
What is Maria Shriver's relation to President John F. Kennedy
A: niece
Problem: Please answer a question about the following article about 2008 Sichuan earthquake:
Beijing accepted the aid of the Tzu Chi Foundation from Taiwan late on May 13. Tzu Chi was the first force from outside the People's Republic of China to join the rescue effort. China stated it would gratefully accept international help to cope with the quake.
When did Beijing agree to aid from Taiwan?
A:
late on May 13