Problem: (CNN) -- Award-winning pianist Roger Williams, who played before nine U.S. presidents and recorded dozens of albums over his long career, died early Saturday in Los Angeles after a struggle with pancreatic cancer, his assistant said. He was 87.

Jacque Heebner, Williams' personal assistant who said she had known the musician for 77 years, said she was with him inside his home when he died. Even into his final weeks, Williams continued to perform and to champion such causes as music education. He had recently released an album and was under contract for three more, she said.

"There was never a man with a more tender, gentle heart," Heebner said. "He was a charming man, even at the age of 87."

Born Louis Weertz in Omaha, Nebraska, the pianist attended Drake University and the Juilliard School in New York City. He then met Dave Kapp, the founder of Kapp Records, who suggested the musician change his name to Roger Williams, according to a biography on the Hit Parade Hall of Fame website.

His break came in 1955 with his recording of "Autumn Leaves," going on to have hits on the Billboard charts for four decades, according to his official website. His records include "Born Free" and themes from the movies "Doctor Zhivago" and "Somewhere in Time."

Williams' success helped land him a star on the Hollywood Walk of Fame, a 2011 induction into the Hit Parade Hall of Fame and many other honors. He was also a workhorse performer, including long stints headlining shows in Las Vegas in which he played his characteristic blend of originals, classics and works from greats like Duke Ellington and more contemporary composers.
1. What was Roger Williams' job?
2. How old was he?
3. What was his birth name?
4. What college did he go to?
5. Where is that?
6. Did he get an education anyplace else?
7. Where?
8. Is that in New York?
9. When did he make the album Autumn Leaves?
10. Was it a success?
11. What chart did the songs show up on?
12. For how long?
13. Is he still living?
14. When did he pass?
15. From what?
16. Where was he?
17. Was he at the store?
18. Who is his assistant?
19. Was she around when he died?
20. Where?
Answer: 1. He was a pianist
2. 87
3. Louis Weertz
4. Drake University
5. New York City
6. Yes
7. Juilliard School
8. Yes
9. 1955
10. Yes
11. Billboard charts
12. Four decades
13. No
14. Saturday
15. Pancreatic cancer
16. Los Angeles
17. No
18. Jacque Heebner
19. Yes
20. Inside his home

Problem: CHAPTER XXII

IN A SNAKES' DEN

"Just in time, and no mistake," remarked Songbird as he surveyed the scene outside. "No use of talking, when it rains down here, it rains!"

"Well, a rainstorm isn't a picnic party," returned Tom. "I wouldn't care so much if I wasn't so anxious to hear from Sam and Dick."

"Dot is vot ve all vonts," broke in Hans.

They crouched in the back of the shelter, so that the rain might not drive down upon them. It was a steady downpour for half an hour, when it began to slacken up, and the sun looked as if it might break through the clouds once more.

"We won't be detained so long, after all!" cried Fred.

"I am just as well satisfied," began Tom, and then gave a jump. "Boys, look there! Did you ever see anything like it?"

They looked in the direction pointed out, and each one sprang up as if he had received an electric shock, while Wags began to bark furiously. And small wonder, for directly in front of the shelter was a collection of snakes numbering at least thirty or forty. They were black, brown and green in color and from two to four feet in length. Some were lying flat, while others were curled up in various attitudes.

"Snakes!" faltered Fred. "And what a lot of them!"

"Dere ain't no choke apout dis!" gasped Hans, his eyes almost as big as saucers. "Vot shall ve do?"

"Get your pistols, boys!" came from Songbird, and he drew his weapon.
1. What were people seeking shelter from?
2. How long did the storm last?
3. Who was Tom waiting to get word from?
4. Who talks with a German accent?
5. Where did the group hunker down?
6. In the front of the shelter?
7. Where then?
8. Why?
9. What did they discover outside after the rain?
10. Did the German think it was funny?
11. What did his eyes become as large as?
12. What did he ask the group?
13. What was the suggestion?
14. Who suggested that?
15. How many snakes were there?
16. Were they all 20 feel in length?
17. How big were they?
18. What was a coloring of one?
19. and others?
20. Were they horizontal with the ground?
Answer: 1. the rain
2. half an hour
3. Sam and Dick."
4. Hans.
5. the shelter,
6. no
7. the back
8. so that the rain might not drive down upon them.
9. snakes
10. no
11. saucers.
12. "Vot shall ve do?"
13. to get their pistols
14. Songbird
15. at least thirty or forty.
16. no
17. two to four feet
18. black
19. brown
20. Some were

Problem: The density, or more precisely, the volumetric mass density, of a substance is its mass per unit volume. The symbol most often used for density is "" (the lower case Greek letter rho), although the Latin letter "D" can also be used. Mathematically, density is defined as mass divided by volume:

where "" is the density, "m" is the mass, and "V" is the volume. In some cases (for instance, in the United States oil and gas industry), density is loosely defined as its weight per unit volume, although this is scientifically inaccurate this quantity is more specifically called specific weight.

For a pure substance the density has the same numerical value as its mass concentration. Different materials usually have different densities, and density may be relevant to buoyancy, purity and packaging. Osmium and iridium are the densest known elements at standard conditions for temperature and pressure but certain chemical compounds may be denser.

To simplify comparisons of density across different systems of units, it is sometimes replaced by the dimensionless quantity "relative density" or "specific gravity", i.e. the ratio of the density of the material to that of a standard material, usually water. Thus a relative density less than one means that the substance floats in water.
1. Are they densities of everything the same?
2. What is the densest elements at regular conditions?
3. What is density of a substance?
4. How is defined mathematically?
5. What does V stand for?
6. What about P?
7. And m?
8. Is the p used actually the English one?
9. What language is it?
10. Which letter?
11. What is another symbol for density?
12. Who gives weight per unit volume as the definition?
13. Is this a good definition?
14. Would you use it in science?
15. What would be a better term for that definition?
16. Where is density the same value as it's mass concentration?
17. To make comparisons easier what stands in for density?
18. What's an example of that?
19. What's another one?
20. What is the relative density of something that floats?
Answer:
1. no
2. Osmium and iridium
3. its mass per unit volume
4. mass divided by volume
5. volume
6. density
7. mass,
8. no
9. Greek
10. rho
11. D
12. the United States oil and gas industry
13. no
14. no
15. specific weight
16. For a pure substance
17. A dimensionless quantity
18. relative density
19. specific gravity
20. less than one