# Liam

Popular questions and responses by Liam
1. ## Math

Solve each equation. Write each equation in simplest form. 7x/8 +21 A 24*** B 18.375 C 1.857 D 19

2. ## Physics

A circular loop with 30 turns and area of 0.25 m2 rotates at 100 rad/s. The axis of rotation of the loop is perpendicular to the direction of the magnetic field of 0.04 Tesla. What is the maximum emf induced in the loop? 15 V 30 V 45 V 60 V I got 15 V but

3. ## biology

A cross between two pea plants with axial flowers and inflated pods gives the following offspringg: 20 with axial flowers and inflated pods, 7 with axial flowers and constricted pods, and 5 with terminal flowers and inflated pods. What is the most probable

4. ## Physics

Which of the following is correct for a step-down transformer? Number of turns in the primary coil is less than the number of turns in the secondary coil. Step-down transformer increases the voltage from low value to high value. Number of turns in the

5. ## physical science

A painter uses a fixed pulley to raise a 1-k can of paint a distance of 10 m,what is the ima??

6. ## physical science

A screwdriver with a 1-cm shaft and a 4-cm handle is used to tighten a screw, what is the ima?

7. ## history

The United States belongs to which of the following international associations? Select the two correct answers. A. Warsaw Pact*** B. United Nations C. League of Nations D. British Commonwealth E. North Atlantic Treaty Organization***

8. ## Physics

A hammer thrower accelerates the hammer (mass = 7.30 kg) from rest within four full turns (revolutions) and releases it at a speed of 21.0 m/s. Assuming a uniform rate of increase in angular velocity and a radius of 0.80 m, calculate the angle of this

9. ## maths: Lowest common multiple

Hot dogs are sold in packages of 12 while hot dog buns are sold in packages of 8. Help me! Don't know what to do! (a) How many packs of each should you buy to have the same number of hot dogs and hot dog buns? (b) How many hot dogs in buns would you have?

10. ## Math

Suppose two cards are drawn from a well-shuffled deck of 52-cards. What is the probability that both cards are face cards? What formula would I use?

11. ## physical science

A mover uses a ramp to push a stereo into the moving van. The ramp is 3 meters long and 1.5 meters high. What is the ima of this ramp?

12. ## CHEMISTRY

I'm trying to figure out the percent composition of a mixture of an unknown (a combination of NaHCO3 and NaCl). Here's my data: Mass of 150mL of empty beaker: 80.937g Mass of 150mL beaker w/ unknown: 81.957g Mass of 150mL beaker w/ unknown after reaction:

13. ## science

A point object is acted upon by forces of 4N, 5N and 6N is in equilibrium. IF=f the 6N force is removed, what is the resultant force on the object now? I really want to know how tow find relationship between 3 forces, and is there anything to do with cos

14. ## Physics

In a body of water, a fish remains at a constant depth while motionless. In the same body of water, a person sinks while motionless. Why? More than one answer may be true. Group of answer choices The person has more mass than the fish. The person has

15. ## Physics

Bowling balls are roughly the same size but come in a variety of weights. Given that the official radius a bowling ball should have is roughly 0.111 m, calculate the weight of the heaviest bowling ball that will float in a fluid of density 1.100×103

16. ## Chemistry

A solution is prepared by dissolving of pure HC2H3O2 and of NaC2H3O2 in of solution (the final volume). (a) What is the pH of the solution? (b) What would the pH of the solution be if of 0.250 M NaOH were added? (c) What would the pH be if of 0.40 M HCl

17. ## Math

A sample of 5 people is selected from 3 smokers and 12 non-smokers. In how many ways can the 5 people be selected?

18. ## physical science

how much power is used when a weightlifter lifts a 1250-n barbell 2 meters in 3 seconds.

19. ## Biology

The ability to roll the tongue (R) is determined by a dominant gene while the recessive gene results in the inability to roll the tongue (r). A man and his wife can both roll their tongues and are surprised to find that their son cannot. Explain this by

20. ## biochem

If 10mL of 1 M HCl is added to 1L of 0.01 M phosphate buffer, pH 7.2, what is the resulting pH? Also what are the conc of H2PO4^1- and HPO4^2- in the final solution? HCl: M = mol / L 1M = mol / 0.01L = 0.01 mol phosphate: M = mol / L 0.01M = mol / 1L =

21. ## Physics

You need to move a 129-kg sofa to a different location in the room. It takes a force of 90 N to start it moving. What is the coefficient of static friction between the sofa and the carpet?

Tonya's car averages 240 miles for each 10 gallons of gasoline. How many gallons of gasoline will the car need travel 216 miles?

23. ## biology

The ability to roll the tongue (R) is determined by a dominant gene while the recessive gene results in the ability to roll the tongue (r). A man and his wife can both roll their tongues and are surprised to find that their son cannot. Explain this by

24. ## Physics

A rocket is fired vertically with an acceleration of 16m/s^2. After time T, the rocket's engine runs out of fuel and it begins to fall freely. The maximum height of the rocket is 940m, what is the minimum value of T?

25. ## Algebra Word Problem

A large hotel finds that it can rent 95 rooms when it charge \$100 per room. For each \$1 increase in room cost it rents one room less. (Likewise, for each \$1 decrease in room cost it rents one room more) What price should it charge in order to maximize the

26. ## physical science

Trying to find the power to this ?. A weightlifter lifts a 1250-n barbell 2meters in 3seconds. How much power was used to lift the barbell? Do you have to find the work first??

27. ## biology

One rule of probability can be expressed as the following: The probability of two independent events occurring simultaneously is the product of the probability of their occurring separately. If, for example, you had a pair of dice and rolled each die one

28. ## grammar

Please explain why the sentence, The flat creek bed was made of warm soft mud is neither a compound subject nor a compound predicate?

29. ## stats

A sample of 12 observations is selected from a normal population for which the population standard deviation is known to be 4. The sample mean is 19. (Round your answers to 3 decimal places.) (a) The standard error of the mean is The 90 percent confidence

30. ## Math

You are selling tickets for a high school concert. Student tickets cost \$4 and general admission tickets cost \$6. You sell 450 tickets and collect \$2340. How many of each type of ticket did you sell? A music store is selling compact discs for \$11.50 and

31. ## math

describe (in words) two different sets of people containing you as a member. describe (in words) the complement of each set. describe what people are not in either the orininal set or the complement set You might think of various categories that include

32. ## maths

1. If a map has a scale of 1cm to 30km, what distance would 1mm represent? 2. If it takes a spacecraft 3 days to travel 250,000 kilometres, what length of time will it take to travel one million kilometres? 3. A publican makes 75 cents on every bottle of

33. ## maths

Help me and show rough work please . First question:A cup holds 150 millilitres. How many cups of tea can be poured from a full teapot which holds 1.5 litres? 2. Put in order of size, smallest first: 2.2, 2.22, 2.199 3. Mom bought two pillows and paid with

34. ## science

Hi. Can someone please explain to me the exact relationship between the greenhouse effect, global warming, and the ozone layer? I'm kind of confused because we had to write an essay on whether or not the greenhouse effect is controversial and everyone in

35. ## Telecommunications

If a Signal with a power level of 40 mW is inserted onto a transmission line and the measured power some distance away is 10 mW, calculate the loss of signal strength is decibels.

36. ## biology

One rule of probability can be expressed as the following: The probability of two independent events occurring simultaneously is the product of the probability of their occurring separately. If, for example, you had a pair of dice and rolled each die one

37. ## algebra

think of a condition under which product of anytwo binomials is a bionomial. you can support your answer with the help of one of the identies of factorization of polynomials A binomial is a polynomial with two terms. Try (x -a)(x + a)and see what you get.

38. ## Telecommunications

We send a frame of 256 bits. If the probability that a !@#\$%^&anges in transmission is 0.001 and each bit is independent. a. What is the probability that exactly 6 bits change? b. What is the probability that exactly 0 bits change ?

39. ## physics

A staging that weighs Wstaging supports a painter weighing 170 N. The reading on the left scale is 490 N and the reading on the right scale is 220 N. 490 N 220 N What is the weight of the staging? Answer in units of N

40. ## math

how do i do the problem 3.14=7x=2y

41. ## history

Were the Korean and Vietnam Wars part of the Cold War? Thanks!

42. ## math

I dont quite get these 2 questions off of my homework. - "Complete the equation" (b^2)^0 = b^8 I keep getting one, but its not an answer choice so I know I'm wrong. "Simplify the expression" p(p^-7q^3)^-2q^-3 I think the q's and p's are messing me up.

43. ## maths

My questions is: 25% of a class don't play basketball. 27 children do. How many are in the class?

44. ## chem

An erlenmeyer flask contains 56.7 g of KMnO4. How many grams of manganese is in the flask?

45. ## nutrition

A cancer patient recieving chemotheraphy starts 8 weeks of tx weighting 171.5 lbs, with hist ht at 56.5 inches and his BMI at 27. Before he got sick his weight was 183lbs. On day 19 of tx hi had lost 3.5 lbs, on day 23 no wt loss, day 28 he had lost

46. ## physics

Consider a solid ball of mass m = 50g and is placed on a long flat slope that makes an angle of 30° to the horizontal. The ball was initially at rest and was then released such that it rolled down the slope without slipping. With a detailed explanation of

47. ## maths

1. What is the value of X in a triangle that has 110° and 30°: 70°, 80°, 90°? 2. A map scale is 1cm to 20km. What is the real distance between two places which are 0.5 apart on the map? 3. When a jeweller sold a ring for €150, he made a profit of

48. ## Telecommunications

1. System A consists of a single ring with 100 stations, one per repeater. System B consists of four 25 stations rings linked by a bridge. If the probability of a link failure is , a repeater failure is , and a bridge failure is , derive an expression for

49. ## physics

a 65kg oak trunk is placed on a board, inclined at an angle of 30 with the horizontal. What is the weight? The Normal Force of the trunk? The Applied force down the ramp?

50. ## ENGLISH--HELP

Every sentence in the paragraph below violates some principle of good persuasive writing. Revise the paragraph, following the directions at the end of each sentence; use your imagination where necessary. Type the revised paragraph in the text box provided

51. ## social studies

How were different religious group (puritans, Quakers)impacted by by the French and Indian War?

52. ## maths very hard

(a) Find the points which divide the line joining A(1,3) and B(-4,-1) internally in the ratios: (i) 1:2 (ii) 1:1 (iii) 3:1 (b) On the same x-y axes plot the point A(1,3) and B(-4,-1) and draw the line joining them. Add the three points which you calculated

53. ## maths

I am preparing myself for the Entrance Exams so I need help. 1. The middle number of 5 odd numbers is 297. What is the last number? 297 -->-----|-----|-----|-----|-----|-----

54. ## Algebra

Use the quadratic formula to solve the equation for x in terms of y and y in terms of x. (Enter your answers as a comma-separated list. If there is no solution, enter NO SOLUTION.) 2x^2 + 7xy + 1 − y^2 = 0 y in terms of x y =

55. ## math

Not sure how to complete my home work tonight my first question is 2+8=4+ ___ I don't no how to answer please help thankyou

56. ## Calculus - Integrating

Question: ∫(x^2)/sqrt(x^2+1) u=x^2+1 , x^2= u-1, du=2xdx ∫(u-1)/sqrt(u) , expand ∫u/sqrt(u) - 1/sqrt(u) Integrate: 2/3(u^(3/2)) - 2u^(1/2) + c My answer: [ 2/3(x^2+1)^(3/2) - 2(x^2+1) + c ] When I took the derivative of this to check my answer, it

57. ## PHYSICS

Consider a solid ball of mass m = 50g and is placed on a long flat slope that makes an angle of 30° to the horizontal. The ball was initially at rest and was then released such that it rolled down the slope without slipping. With a detailed explanation of

58. ## maths

1. A ball costing €50 was increased in price by 1%. What was the new price? 2. The perimeter of a swimming pool is 70 metres. If the width is 10 metres, what is the length of the pool? 3. A DVD player can be bought for €250 cash or for a down payment

59. ## maths

Help me on these questions! 1. The teacher's bill for €15 worth of copies and 8 English workbooks was €35. What did each workbook cost? 2. Patrick spent 30% of his money on a football and 60% of it on football boots. If Patrick had €3 left, how much

60. ## Math

Use the quadratic formula to solve the equation for x in terms of y and y in terms of x. (Enter your answers as a comma-separated list. If there is no solution, enter NO SOLUTION.) 2x^2 + 7xy + 1 − y^2 = 0 (a) x in terms of y x = (b) y in terms of x y =

61. ## Geology

How do i work out skewness and sorting Thank you for using the Jiskha Homework Help Forum. Hopefully the following sites will help you: faculty.uml.edu/nelson_eby/89.215/Assignments/Sand%20Size%20Distributions.p...

62. ## Calculus

If x=2cos (z) and y= sin (z), then d^2y/dx^2=? What I got -sin (z) / -8cos (z)*sin (z) simplifies to 1/8cos (z) I don't think I'm right...

63. ## maths

Need help! 1. If a bus is travelling at a speed of 60km/hour,how longlshould it take to travel 10km? 2. Write two whole numbers greater than -5 but less than 0. -10 -5 0 5 *A number line to help you* 3. How much will the lorry driver pay for a load of turf

64. ## Chemistry

When CH3OH at its normal boiling point, does its entropy increase or decrease? Explain. - My opinion The entropy decreases because there is less order due to the less randomness of gas particles favoured when such an element is boiled not at normal boiling

65. ## maths

Stuck on these questions! Help! 1. A ball costing €50 was increased in price by 1%. What was the new price? 2. The perimeter of a swimming pool is 70 metres. If the width is 10 metres, what is the length of the pool? 3. A DVD player can be bought for

66. ## maths

My question is: A cheeseburger costs twice as much as a can of coke. If a cheeseburger and a can of coke cost €2.10, how much is the cheeseburger.

67. ## maths

Eugene spent half his money in one shop and half of what was left in another shop. He then had€1.25. How much had he in the beginning. I am not sure if I got it right so O got €5.00\€6.25. So please do show your rough work and answer. Thank You! :D

68. ## english

how can i describe a plane crash using imagery in first person point of view ?

69. ## Science

what mass of sulphuric acid must be added to a 750 ml to have a ph of 2.27

70. ## math linear alegba

Find the distance from the point (1, 1, 1) to the line given as the intersection of planes x+2y− 2z = 5 and 6x − 3y + 2z = 8.

71. ## science

An aircraft travels through the air with a velocity of 200m/s due east. It is found to be travelling over the ground with a velocity of 220m/s in a direction of 20(degree) south of east.The difference between the two is due to thw wind velocity. What is

72. ## lit

is this right? punctuation wise. Franklin Roosevelt said that December 7, 1941, was "A date which will live in infamy."

73. ## science

Hi. Can someone please help me with this question? Thanks! The transport sector accounts for half of oil used. List other factors that could have accounted for increased oil imports between 1975-1994. Justify your choices.

74. ## math

last post was math

75. ## school

make each point have its own room with 2 squares . . . . . . . . . We cannot figure this out and teacher does not tolerate mistakes

76. ## Math

Simplify 1/(1*2*3) + 1/(2*3*4) + 1/(3*4*5) + ... + 1/(n*(n+1)*(n+2))

77. ## math

1. A distance of 1 kilometre is represented on a map by a line 5cm in length. The scale is 1cm to ? m. 2. Value Added Tax at a rate of 20% is added to the price of a washing machine which costs €250 before tax. What will be its price after VAT has been

78. ## math

There is a jar of jelly beans, Dad was hungry so he ate half. Brother wanted some too, so he ate a third, Mom saw brother eating some and ate a fourth. Mom gave 6 to Sister and gave 3 to Grandma. How many Jelly beans were in the jar originally? Justify

79. ## Math

Hey guys I need some help with this question PLZ: A telecommunications company offers a rental deal which costs \$30 per month plus 50c per call. a) Find the total cost (T1) for making x calls in a given month b)Find the total cost for making 52 calls in a

80. ## Math

3 animals need to be chosen. There are 3 tigers, 6 bears, and 4 dogs. Find the probability that: a) 1 tiger, 1 bear, and 1 dog are chosen b) 3 bears are chosen c) no tigers are chosen by the way, we are learning combinations and permutations. Thank you for

81. ## eng

describe your adrenaline when you are scared & terrified & don't know what to do!

82. ## math

two trees on a street have the heights of 3 meters and nine metres respectively. at a certain time of day the shorter tree casts a shadow length of five meters how far apart are the trees?

83. ## math

Anna and Jamie were at track practive. The track is 2/5 kilometers around. Anna ran 1 lap in 2 minutes. How many minutes does it take Anna to run one kilometer?

84. ## math

what percent of 300 is 60

85. ## maths

1. A music store pays €14 for a CD. At what price must the CD be sold so the shopkeeper can make a profit of 25%? 2. What is the smallest number which can be divided evenly by 500, 600, 1000? 3. A map scale is 1cm to 30km. What is the real distance

86. ## maths

QUESTIONS!! 1.How much would it cost to carpet a room 4m by 3m at €9 per square metre? 2. A television set can be purchased for € 299 cash or a deposit of €50 and 12 monthly payments of €25. How much do I save by paying cash? 3. How many thousands

87. ## Mathematics

Express the following limit as a definite integral. Show all the steps in your work. Lim as n approaches infinity of (3/n * (n)sigma(I=1) * (1+(3i/n))/(9+(1+(3i/n)^2)). I am utterly lost!

88. ## Math

Two forces of magnitude 15N and 4root2N are acting in the directions 3i-4j and i+j respectively, find the magnitude of the resultant of the two forces.

89. ## Biology

Enantiomers, like L-alanine and D-alanine, are so similar that ribosomes will incorporate either one into a protein during synthesis. True or False?

90. ## writing

Do you have any tips for writing an opinion paper?

91. ## math

The National Association for Women in Science asked recent high school grads if they had taken certain science classes. Of those surveyed, 32 said they had taken physics, 51 said they had taken chemistry and 15 said they had taken both. Ten said they had

92. ## maths

example of a function f:z-->z that is surjective but not injective

93. ## social studies

unscrabble this epgbsairrkn

94. ## science

Can somebody please point me in the general direction to the answer for this question? Thanks! How do low fuel prices affect the nation's security?

95. ## maths

Stuck on these questions! 1. Clare is 1.5 metres tall. She is 13cm taller than Michelle. How tall is Michelle? 2. My sister has €40 in her bank account but wrote a cheque for €50 to pay for a new dress. By how much is her account now overdrawn?

96. ## maths

My 1st question is: What is the cost of 1.2kg of putty at €3 a kg? And last question is: A salesman bought a car for €5,000 but later had to sell it for €4,750. How much was his loss?

97. ## maths

Please help me on these questions. 1. Tom swapped 2/5 og his marbles gor 9 of Martha's. How many has Tom now? I got 15. I'm not sure if it's right. 2. A second-hand book shopmade a profit of €8 bh selling 10 books at €1.90 each. What price 2 was paid

98. ## maths

Please help me on these problem solving sums. Also show the rough work and answer. First question: If 15% of the children walk to school, 7% cycle to school and 30% come by bus, what percentage come by car ? 2. How much for forty steel nails at €2.50 per

99. ## Maths

A rectangle has area 6 cm^2 and diagonal length 2 square root 5cm. What is its perimeter