# sam

Questions and answers by visitors named sam

## Questions

1. ### Which of the following was the purpose of the first British colony in Australia?

A. to benefit from Australia's strategic location B. to extract natural resources C. to house convicted prisoners D. to convert Aborigines to Christianity

2. ### Which region was the center of Moorish culture on the Iberian Peninsula?

A. Castile-León B. Aragon C. Majorca D. al-Andalus

3. ### A golf practice range has 245 balls. The owner bought a carton of golf balls.How many golf balls does the owner have after buying the carton?

Golf Balls 12 balls to a box 15 boxes to a carate 5 crates to a carton pls help by explaining me Thank you

4. ### which of the following statements about american romantic poetry is not true?

A)it followed a fixed rhyme scheme B)its themes originated in British literature C)it was influenced by Gothic literature D)it was filled with emotion

7. ### An unknown metal is found to have a density of 19.300 g/cm^3 and to crystallize in a body-centered cubic lattice. The edge of the unit cell is found to be 0.31627 nm.

Calculate the atomic mass of the metal. Im not sure how to approach this problem...when i

9. ### A person weighing 0.6 kN rides in an elevator that has a downward acceleration of 2.3 m/s^2.

The acceleration of gravity is 9.8 m/s^2. What is the magnitude of the force of the elevator ﬂoor on the person? Answer in units of kN

10. ### please po help me.

A chimney projects 6 feet above the roof. At a point 10 feet 8 inches down the roof from the base of the chimney,the chimney subtends an angle of 17°40' . find the angle at which the roof is inclined to the horizontal.

12. ### Find the area of the region enclosed between y=2sin(x and y=3cos(x) from x=0 to x=0.4pi

Hint: Notice that this region consists of two parts. Notice: I'm getting 1.73762 but apparently that is wrong.

13. ### what is the molality of a 10.5% by mass glucose solution?. density of the solution is 1.03g/ml

can someone please explain how to do this question. please and thank you

14. ### A boat's crew rowed 12 miles downstream, with the current, in 1.5 hours. The return trip upstream, against the current covered the same distance, but took 4 hours. Find the crew's rowing rate in still water and the rate of the current...

The crew's rowing

15. ### Consider a window the shape of which is a rectangle of height h surmounted by a triangle having a height T that is 1.1 times the width w of the rectangle

If the cross-sectional area is A, determine the dimensions of the window which minimize the perimeter.

16. ### Consider the following substance:

Al2(SO4)3 What is the oxidation number of: a) aluminum b) sulfur c)oxygen

17. ### if it takes 31,500 joules of heat to warm 750g of water, what was the temperature change?

My answer: Q = (M) (DeltaT) (c) Delta T=Q Delta T = 31,500J -------- 750gx 1.0cal/gCo Delta T = 42oC

18. ### When a 644 lb boat is moving at 10fps, the motor conks out. How much farther will the boat

glide, assuming its resistance to motion is 2v lb where v is in fps.

19. ### A tennis ball with a speed of 28.3 m/s is

moving perpendicular to a wall. After striking the wall, the ball rebounds in the opposite direction with a speed of 14.6311 m/s. If the ball is in contact with the wall for0.013 s, what is the average acceleration

24. ### Two dice are rolled. Find the odds that the score on the dice is either 7 or 12. Am I doing this right?

There are only 3 ways to equal 7 on two dice 6+1,5+2,4+3 so there is a 3/12 chance that I roll a 7 and a 1/12 chance of rolling a 12. my chances of

26. ### During a baseball game, a batter hits a high

pop-up. If the ball remains in the air for 6.36 s, how high does it rise? The acceleration of gravity is 9.8 m/s 2 . Answer in units of m.

27. ### Which of the following technologies required the measurement of the stars for navigation?

A. compass** B. lateen C. Mercator projection D. astrolabe

30. ### A shipment of 9 printers contains 4 that are defective. Find the probability that a sample of size 4​, drawn from the​ 9, will not contain a defective printer .

the probability is ?

31. ### The loudness,

L L, of a sound (measured in decibels, dB) is inversely proportional to the square of the distance, d d, from the source of the sound. Round to 3 decimal places. A person 15 feet from a jetski, it is 75 decibels loud. How loud is the jetski

32. ### Sara estimated 23 x 43 using 20 x 40.

Sam estimated 23 x 43 using 25 x 40. Will Sara's or Sam's method give an estimate closer to the exact answer?Explain.

34. ### An igneous rock contains a Pb−206/U−238 mass ratio of 0.367.

How old is the rock? (U−238 decays into Pb−206 with a half-life of 4.50×109 yr.) I'm not sure how to get started on this :/

35. ### A normal population has mean 100 and variance 25. How large must the random sample

be if we want the standard error of the sample average to be 1.5? I know the answer is 12. Would someone please be able to explain! and share what formula they used

36. ### The velocity of a ball changes from ‹ 8, −5, 0 › m/s to ‹ 7.88, −5.28, 0 › m/s in 0.04 s, due to the gravitational attraction of the Earth and to air resistance. The mass of the ball is 140 grams.

I calculated the acceleration and got <-3,-7,0>

44. ### A large uniform chain is hanging from the ceiling, supporting a block of mass 48kg. The mass of the chain itself is 15 kg, and the length of the chain is 2.6 m.

The acceleration of gravity is 9.81 m/s^2 Find the tension in the chain at the point where the

45. ### Finding molarity and molality(best answer)?

An aqueous solution is prepared by diluting 3.30 mL acetone,(d= 0.789g/mL) with water to a final volume of 75.0 mL. The density of the solution is 0.993 g/mL. What is the molarity, molality and mole fraction of

46. ### Air consits of 21% oxygen, 78% nitrogen and 1% argon by volume. Calculate the partial pressures in Pa if total pressure is 1 atm.

My teacher just converted 1atm in pa and then did 21% of that for oxygen etc etc. Can you explain why she did this, is volume

50. ### if the specifc heat of iron = 0.46J/g C,how much heat is needed to warm 50g of iron from 20C to 100C

-- I do not know how to make the celcius o above the temperature number my anwswer Q = Mx(delta)TxC Q=50gx80Cx0.46J/gC Q = 1840 Joules Delta = the triangle

59. ### Mr Badger buy 12 pens for \$x each. The price of the pens have now increased by 15

cents each. And he can only afford to buy 10 pens at the same total cost as before. What was the original price of each pen?

61. ### What is the relative frequency of male passengers?

Round to the nearest hundredth, if needed. 0.15 0.27 0.43 0.75

62. ### Find the interval(s) where the function is increasing and the interval(s) where it is decreasing. (Enter your answers using interval notation. If the answer cannot be expressed as an interval, enter EMPTY or ∅.)

f(x) = 5x2 + 9x + 8

63. ### How did the role of the church in education change over time?

A.Universities changed from being independent to being part of the church. B.Priests became the only teachers at universities. C.Schools began to provide education beyond religious instruction.

64. ### jonathan sabastion batch composed much of his music around what insurment family? (1 point)

a.brass b.percussion c.keybord d.electronic

Are rocks considered valuable natural resources?(1 point) a.No, rocks are not valuable because they are nonliving solids. b.No, rocks are not valuable because they contain a lot of waste. c.Yes, rocks are valuable because they are part

66. ### hello smart people i need a little help please can anyone help with this practice quiz please. (if not please move along iv been getting a lot of hate reacently that i really dont need.) you see my dad has covid right now and its BAD he may not make it

Which of the following was one major effect of the bubonic plague? A.It killed nearly one third of the population of Europe. B.It drove many poor people from cities to manors. C.It

68. ### 1.find the area of the tryangle (1 point)

a.16.4 b.11.55 c.23.1 d.4.55 but i dont want answers i just need help i do read my lesson notes and even went back to check but its just not helping so i was wondering if any fellow smart people can help PLEASE.

70. ### (c) Given the DNA shown below …

3’ ATTGAGGATCCGTAATGTGTCCTGATCACGCTCCACG 5’ 5’ TAACTCCTAGGCATTACACAGGACTAGTGCGAGGTGC 3’ i) If this DNA was cut with BamHI, how many DNA fragments would you expect? Write out the sequence of these double-stranded DNA

71. ### b) BclI cleaves after the first T:

3’ TGATCA 5’ 5’ ACTAGT 3’ Does cleavage by BclI result in a 5’ or 3’ overhang? What is the sequence of this overhang? [1]

72. ### a) BamHI, cleaves after the first G:

3’ GGATCC 5’ 5’ CCTAGG 3’ Does cleavage by BamHI result in a 5’ or 3’ overhang? What is the sequence of this overhang? [1]

76. ### A 25 kg object travels at 52 m/s West collides with a 39 kg object at rest. If the object sticks together on contact, the resulting velocity of the combined masses is ab m/s.

Let's west be positive

How much

85. ### In a amusement park ride, gondola cars of weight W are attached by rods 24ft long to a bull

wheel 16ft in diameter. The bull wheel rotates in a horizontal plane about a vertical axis at its center. At how many rpm is it rotating when the supporting rods of

86. ### A magnetic particle weighing 3.6 grams is pulled through a solenoid with an acceleration of

6m/s2. Compute the force in pounds acting on the particle.

87. ### For Set A, how many of the numbers are greater than 42? _____

Set A 1|0 2|1 1 4 4 3|5 4|0 1 3 5|0 1

88. ### Referring to the Fig. in Question #22, think about first picking a card and then

rolling the die. Give the probability in simplest form. P(not C, odd) = _____ (cards 1 a 2 b's 3 c's ) (dice) 6 sided rolled on 2

90. ### The Downtown Theater has 1 ticket window. In how many ways can 3 people

line up to buy tickets? _____

91. ### You bought one \$2 chance on an \$84 radio. Sixty chances were sold. What

is your expectation? ( not 0.57)

92. ### Suppose the cards shown are mixed and placed facedown. Think about

drawing a card and without replacement drawing a second card. Give the probability in simplest form: P(not A, A) = _____ ————— ————— ————— —————

93. ### Suppose the cards shown are mixed and placed facedown. Think about

drawing a card and without replacement drawing a second card. Give the probability in simplest form: P(C, not B) = _____ ————— ————— ————— —————

94. ### Stereo Inc. sells a stereo system for \$400 down and monthly payments of \$60 for the next 3 years. If the interest rate is 4.5% per year, find:

a) The cost of the stereo.

99. ### Which one is incorrect?

A-Each of the players have a locker. B-There go the members of the cast. C-Neither of the reports is finished. D-Either of the clients is angry.

100. ### Read this stanza from “The Song of Wandering Aengus” by William Butler Yeats.

I went out to the hazel wood, Because a fire was in my head, And cut and peeled a hazel wand, And hooked a berry to a thread; And when white moths were on the wing, And