# Lance

Newest questions and responses by Lance
1. ## Physics

A driving bell can withstand a maximum pressure of 2.5 x 10^6 Pa. What maximum depth can the ball reach in seawater?

2. ## Physics

What is the gauge pressure at the bottom of a pool 1.9 m deep?

3. ## Physics

What is the absolute pressure 1.8 m below the surface of a lake?

4. ## Physics

What is the gauge pressure if the absolute pressure is 321 atm?

5. ## Physics

What is the absolute pressure if the gauge pressure is 3.2 atm?

6. ## Physics

What is the absolute pressure 2.5 m below sea surface?

7. ## Physics

What is the gauge pressure if the absolute pressure is 400 kPa?

8. ## Physics

A diver can withstand a maximum pressure of 3x10^5 Pa. What maximum depth can he reach in seawater?

9. ## Physics

What is the absolute pressure if the gauge pressure is 100 kPa?

10. ## Physics

A copper cylinder with a cross-sectional area 0.034 m^2 is placed vertically on a tabletop. What is the weight of the cylinder if it exerts an 800 Pa of pressure on the table top?

11. ## Physics

A 500-mL beaker has a mass of 250 g when empty and 645 g when filled with an unknown liquid. What is the density of the liquid?

12. ## Physics

What is the mass of a rectangular shaped ice block with dimensions of 0.04m x 0.05m x 0.03m if the density of ice is 917 kg/m3?

13. ## Math

If an elliptic race track is 100 yards long and 20 yards wide, then how far apart are the foci?

14. ## Physics

What is the focal length of a lens that has a center of curvature of 18 meters from one of the curves of the lens?

15. ## Physics

What is the focal length if a lens that has a center of curvature 8 meters from one of the curves on the lens?

16. ## Physics

An object is placed at a distance of 60 cm from a converging lens with a focal length of 20cm. What is the magnification of the lens?

17. ## Physics (HELP)

An object is placed at a distance of 60 cm from a converging lens with a focal length of 20 cm. What is the magnification of the lens?

18. ## Physics (HELP)

An object is placed at a distance of 6 cm from a concave mirror and an image is produced at a distance at a distance of 14 cm from the mirror. What is the focal length?

19. ## Physics

A ray of light perpendicular to a medium produces a refracted ray measuring 45º. * True False

20. ## Physics (HELP)

The critical angle is the angle at which a ray of light is no longer refracted but completely reflected. True or false?

21. ## Physics (HELP)

When light goes from a medium that is less dense to a medium that is more dense, the angle of the refraction is greater than the angle of the incidence

22. ## Physics (HELP)

A real image is usually inverted, but can be upright in special cases. True or false?

23. ## Physics (HELP)

An object inside of the focal point of a concave mirror produces an image that is...

24. ## Physics (HELP)

The angle of reflection of a ray of light striking a plane mirror is ½ the angle of incidence. True or False?

25. ## Physics (HELP)

An object is placed at a distance of 25 meters from a concave mirror with a focal length of 20 meters. The image produced is a distance of ___ meters from the mirror.

26. ## Physics (HELP)

An object is placed at a distance of 8 meters from a concave mirror with a focal length of 6 meters. The image produced is a distance of ___ meters from the mirror.

27. ## Physics (HELP)

Jill pulls on a rope to lift a 12 kg pail out of a well, while the clumsy jack watches. For a 10.0 meter segment of the lift, she lifts the bucket straight up at constant speed. How much power is required to complete this task in 5 seconds?

28. ## Calculus- Related rates

A spherical balloon is inflated at the rate of 1 cm^3 per minuter. At the instant when the radius r=1.5, (a.) how fast is the radius increasing? (b.) how fast is the surface area increasing?

29. ## Calculus

The length l of a rectangle is decreasing at the rate of 3cm/sec, while its width w is increasing at the rate of 3cm/sec. Find the rates of change of (1.) the area, (2.) the perimeter, (3.) the length of one diagonal at the instant when l=15 and w=6.

30. ## Physics

A glacier advances at 7 × 10−6 cm/s. How far will it move in 3.7 y? Answer in units of cm. I have calculated that there are 31,449,600 seconds in a year. I multiplied 31,449,600 by 7 × 10−6 and got 2201.472. Then I multiplied that by 3.7 and got

31. ## Chemistry

Sodium + Sulfuric Acid and Phosphoric Acid + Magnesium Hydroxide a.write the formula b. supply the product c.type of reaction d. balancing

32. ## Math

Let f(a,b) = 2a - 3b^2 + 7. If f(b,3) = 90, then what is b? Thank you for helping!

33. ## Math

If f(x)=5x-12, find a value for x so that f^-1(x)=f(x+1). Thank you so much

34. ## Math

If 1 < x < 9/8, which is bigger, ∛3x or √2x.

35. ## Math haha

Simplify: ( 7/2+5/6 )^2 - ( 7/2-5/6 )^2

36. ## Math

If 1 > x > 9/8, which is bigger, ∛3x or √2x.

37. ## math

Without doing the computation explain why or why not19.7 is a reasonable value for the expression 122.14÷6.2.

38. ## MATH

I am trying to find the rule for a function table with input 2, output 30; input 3, output 48; input 4, output 66.

39. ## physics

A 78 kg bag of mortar mix is sitting in the back of a truck rounding a traffic circle of radius 27 m at a speed of 21 km/h. Using the truck's frame of reference, find the force of contact between the bag and the side of the truck. Assume that the floor at

40. ## Algebra, Logirithms

Find the inverse of the function: f(x) = e^(4x+2) - 10

41. ## Math

Help Please! The LCM of two numbers is 60. The GCF of the numbers is 5. One number is 5 more than the other. The numbers are________ and __________ Please help clueless in Massachusetts

42. ## math

Brandon and Jacob buy used cars at the same time. Brandon buys a car with 10,000 miles on it. He drives an average of 100 miles a week. The equation that follows can be used to determine how many miles, m, will be on the car after any number of weeks of

43. ## Noun and Adjective Clauses

Amanda bought a prom dress which she considered the most beautiful dress ever made. Adjective clause:Amanda bought a prom dress Word(s) modified:dress

44. ## physics

Find the field produced by a uniformly charged sheet carrying 93pC/cm2 .

45. ## Statistics

The inside diameter of the automobile wheel bearing sets at a factory is expected to be normally distributed with a mean of 1.30inches and a standard deviation of 0.04 inches. What is the probability that a randomly selected wheel bearing will have an

46. ## Physics

Steps for drawing an acceleration time graph from a velocity time graph and vice versa?l Please give me proper steps

47. ## math

Triangle GHI is an isosceles triangle. H is the vertex. If the measure of H is 73 degrees what is the measure of G? A.73 B.17 C.34 D.104 A)73 degrees?

48. ## Math

Triangle ABC is an isosceles triangle If the measure of B is 37 degrees what is the measure of C? A.37 B.53 C.106 D.143 I think it's A or C?

49. ## Science

Why do you think people wrestle alligators?

50. ## English

To assert means to A.put into words forcefully b.pass along stories quickly C.compliment someone often D.explain something completely A?

51. ## English

An incident is a single A. event B.person C.memory D.discussion A?

52. ## Analytic Geometry

A parabola has a directrix y=-3, axis =4 and latus rectum equal to 2. find its equation. Please help me its for my homework

53. ## Analytic Geometry

Find the equation of a circle passing through and tangent to the line x-3y+8=0

54. ## Analytic Geometry

Give the equation of the circle tangent to both axes of radius 5 and in the 1st quadrant. Can you help me solve this?

55. ## Analytic Geometry

What are the equations of the circles tangent to the x-axis, of radius 4 and whose center is at (-2,y) Please help, how do I solve this problem?

56. ## Analytic Geometry

A point is equidistant from (-2,4) and (3,5). It is also equidistant from (-2,-3) and (6,-1). Find the point Please I need Help with this

57. ## Analytic Geometry

A point is equidistant from (-2,4) and (3,5). It is also equidistant from (-2,-3) and (6,-1). Find the point Please I need Help with this

58. ## Geometry

What is the equation of a line through (-2,5) and whose segment intercepted between the axes in the 2nd quadrant is 7sqrt2? Please help me solve this

59. ## Math,Geometry

What are the equations of the lines through (-5,-3) and passing at distance 2sqrt5 from (5,7) Please I really need your help. I do not know how to do this problem.

60. ## Math,Geometry

What are the equations of the lines through (-5,-3) and passing at distance 2sqrt5 from (5,7) Please I really need your help. I do not know how to do this problem.

61. ## geometry

What are the equations of the lines through (-5, -3) and passing at distance 2sqrt5 from (5,7)? This problem is confusing? How do I solve this? Please I need your Help

62. ## English

What's the difference between possessive nouns and possessive pronouns? Are they the same

How do you find out what your grade is on a paper? For example if there is 70 questions and you miss 10 how do you find out what your grade is? Do you subtract 70 and 10 and when you get your answer you divide it by 100?

64. ## Math

A highway construction warning sign blinks on and off. In all, the sign is on for 0.88 of each minuite. For how many seconds is the sign on in 5 minutes?

65. ## Science

Define heat in science terms

66. ## Science

You may have heard "Nothing is Free" explain why this is true

67. ## Math perimeter

How many inches of matting are needed to frame an 8in by 11 in print? 38?

68. ## math

How many inches of matting are needed to frame an 8 in by 11 in print 38in?

69. ## Math

When finding the perimeter you have to add the sides not multiply right? For example a rectangle is 14 width and 29 height would the perimeter be 86in?

70. ## physics

You see an optical illusion of an ever-upward spiral staircase. The climber trudges up and up and never gets anywhere, going in circles instead. Suppose the staircase is provided with a narrow ramp, allowing the tired stair-climber to push a wheelbarrow up

71. ## Maths

Three boys shared some cards. Peter had twice as many cards as Farid. The ratio of the number of cards Peter had to the number of cards Kiran had was 6:5. Farid gave 2/3 of his cards to Peter and the rest to Kiran. How many cards did Kiran have at first if

72. ## Finite Math- help wanted. Super hard!

In a past presidential election, it was estimated that the probability that the Republican candidate would be elected was 2/3, and therefore the probability that the Democratic candidate would be elected was 1/3 (the two Independent candidates were given

73. ## math

An airplane flying against the wind travels 100 miles in the same amount of time it would take the same plane to travel 140 miles with the wind. If the wind speed is a constant 40 miles per hour, how fast would the plane travel in still air?

74. ## Science

We have to build a catapult that can launch a marshmallow at least 10 feet. Can anyone give me any ideas?

75. ## Order of Operations

7/6+(10-4)x5 35?

76. ## Order of Operations

As you simplify each expression below, which one requires finding the quotient of 80 divided by 2 A.4+6x8/2 B.2x5x8/2 C.(2+5)x8/2 D.4+(6x8)/2 B?

77. ## math

A bag of apples weighs 22.3 ounces and costs \$1.80. What is a good estimate of the price per ounce of the bag of apples? A.\$1 B.10 cents C.\$4 D.40 cents I think its either B or D. I divided

78. ## Math

A bag of apples weigh 22.3 ounces and costs \$1.80 What is a good estimate of the price per ounce of the bag of apples A.\$1 B.10 cents C.\$4 D.40 cents D?

79. ## Order of Operations

85/5+14x(12-8) 82?

7-2+3/3x5

81. ## Science

Batteries change ____ energy into _____ energy Chemical and electric Converting the suns energy into electricity does not work if it is ____ time or there is ___ weather night and bad? The suns energy can be turned into electrical energy or ___ energy

82. ## Math

Ned has 24 caramal candies, 18 mints,and 12 chocolate bars. he wants to divide the candies into groups so that each group has the same number of pieces of each ind of candy. What is the largest number of groups that ned can make A.2 B.4 C.6 D.12 B?

83. ## mth

What is the greatest common factors of 9 and 27 A.3 B.6 C.9 D.18 C?

84. ## Math

Use estimation to determine which expression has the least value A. 5 3/4 + 2 1/4 - 2 1/8= 8? B. 6 1/4 + 1 - 1 1/4= 6? C.8 1/3 - 1 1/2 + 1 1/3= 7? D? 12 2/5 - 5 +2 4/5= 10? B has least value

85. ## Math

what is 1 2/3 times 3

86. ## Math

Jared and 5 friends wanted to make mac and cheese for lunch. they decided to use 3 boxes and each box needs 1` 2/3 cups of milk. the milk carton has 4 cups of milk left in it. do they have enough milk to make their lunch? Prove answer I put Yes because if

87. ## Math

School is out at 3:50 pm. Band practice is 2 1/2 hrs dinner takes 3/4 of an hour homework takes 1 1/4 hrs. You have to go to bed at 10. About how much time is left to play video games? A. 3 1/2 B.5 hours C.1 hour D. 2 hours D?

88. ## Math

Elana bought three bags of dried fruit that weighed 1 7/10 3 1/4 and 2 3/5 about how many fruit did she buy 6 7 10 8 6?

89. ## Math

Maria served 4 1/7 loaves of banana bread and 4 2/3 loaves of cranberry bread. About how many slices of bread did she serve A.80 B.72 C.64 D.32

90. ## Math

Round each number to the nearest whole number 3/14

91. ## science

why barium comnpounds are toxic

92. ## Math

2.36 rounded to the tenths place

93. ## Definition

What does TRAC stand for

94. ## Math

Write a story for the following multiplication problem : 16x5 Derrick gets \$5 for every hour he works at the store. He works for 16 hours each day. How much money does he get everyday? Is that a good problem? Write a story for the following multiplication

95. ## College Chemistry

A gas containing carbon and hydrogen analyzed as 85.6 % carbon and 14.4 % hydrogen. A 42.1 g sample of a gas occupied a volume of 7490 mL with a pressure of 2280.0 torr at 92 °C. Enter the molecular formula of the compound. Thanks.

96. ## College chemistry

Need help balancing chemical equation. Complete and balance the chemical equation. Be sure to include the states of the reactants and products. C3H8(g)+O2(g) →

97. ## Chemistry College

A 79.1 g mixture of the compounds calcium chloride and sodium sulfide is 80.9 % by mass sodium sulfide. The compound sodium sulfide is 58.9 % by mass sodium. Calculate the mass (g) of sulfur in the mixture. thanks.

98. ## Statistics

A study on the amount of dye needed to get the best color for a certain type of fabric was conducted. The following data give the photometer readings for the color density of the fabric when the amount of dye used was 1% of the weight of the fabric. 13.2

99. ## Reposting Chemistry College

Based on the balanced equation 4Na + O2 → 2Na2O calculate the number of Na2O formula units formed when 60 Na atoms and 10 O2 molecules react? Thanks.