Question: The photoelectric effect is the emission of electrons (called "photoelectrons") from a surface when light is shone on it. It was first observed by Alexandre Edmond Becquerel in 1839, although credit is usually reserved for Heinrich Hertz, who published the first thorough investigation in 1887. Another particularly thorough investigation was published by Philipp Lenard in 1902. Einstein's 1905 paper discussing the effect in terms of light quanta would earn him the Nobel Prize in 1921, when his predictions had been confirmed by the experimental work of Robert Andrews Millikan. The Nobel committee awarded the prize for his work on the photo-electric effect, rather than relativity, both because of a bias against purely theoretical physics not grounded in discovery or experiment, and dissent amongst its members as to the actual proof that relativity was real.
Is there an answer to this question: Who first observed the photoelectric effect?

Answer: Alexandre Edmond Becquerel


Question: Mary is also depicted as being present among the women at the crucifixion during the crucifixion standing near "the disciple whom Jesus loved" along with Mary of Clopas and Mary Magdalene,[Jn 19:25-26] to which list Matthew 27:56 adds "the mother of the sons of Zebedee", presumably the Salome mentioned in Mark 15:40. This representation is called a Stabat Mater. While not recorded in the Gospel accounts, Mary cradling the dead body of her son is a common motif in art, called a "pietà" or "pity".
Is there an answer to this question: Name the two women present with Mary at the Crucifixion of Jesus?

Answer: Mary of Clopas and Mary Magdalene


Question: The Head of State of Portugal is the President of the Republic, elected to a five-year term by direct, universal suffrage. He or she has also supervision and reserve powers. These powers are often compared[by whom?] with the "moderator power" that was held by the King in the Portuguese Constitutional Monarchy.[citation needed] Presidential powers include the appointment of the Prime Minister and the other members of the Government (where the President takes into account the results of legislative elections); dismissing the Prime Minister; dissolving the Assembly of the Republic (to call early elections); vetoing legislation (which may be overridden by the Assembly with a supermajority); and declaring a state of war or siege. The President is also the ex officio Commander-in-Chief of the Armed Forces.
Is there an answer to this question: By what means is the President of the Republic elected?

Answer: by direct, universal suffrage


Question: The most impressive and famous of Sumerian buildings are the ziggurats, large layered platforms which supported temples. Sumerian cylinder seals also depict houses built from reeds not unlike those built by the Marsh Arabs of Southern Iraq until as recently as 400 CE. The Sumerians also developed the arch, which enabled them to develop a strong type of dome. They built this by constructing and linking several arches. Sumerian temples and palaces made use of more advanced materials and techniques,[citation needed] such as buttresses, recesses, half columns, and clay nails.
Is there an answer to this question: What is the most impressive and famous style of Sumerian buildings?

Answer:
the ziggurats