a change that happens fast

21,047 results
1. Math( Can you help me with starting this problem)

How fast does the radius of a spherical soap bubble change when you blow air into it at the rate of 15 cubic centimeters per second? Our known rate is dv/dt , the change in volume with respect to time, which is 15 cubic centimeters per second. The rate we

2. Connexus GT 6A

Help fast! Sylvia is trying to keep track of an argument she’s listening to in a podcast. What is the best way for her to do this? Identify the claim Create an outline Write a summary Look for evidence Help fast please!

3. Calculus

A man 5.5 ft tall walks away from a lamp post 10 ft high at the rate of 8 ft/s. (a.) How fast does his shadow lengthen? (b.) how fast does the tip of the shadow move?

4. Chemistry

If the reaction H2 + Br2 2HBr has a rate law that can be described by k[H2][Br2]1/2, which series of reactions is a possible mechanism for the reaction? a. Br2 2Br (fast) Br + H2 HBr + H (slow) HBr + H + Br â†’ 2HBr (fast) b. Br2 2Br (slow) Br + H2

5. Spanish

Explain how to conjugate pedir and servir in the present tense. To conjugate both words to pat tense all you have to do is change the last two latter at the end of the word. Pedir mean to ask so at the end of pedir you can just change ir to ar,or,and er

6. Physics

A car starts rolling down a 1-in-8 hill (1-in-8 means that for each 8 m traveled along the road, the elevation change is 1 m). A) How fast is it going when it reaches the bottom after traveling 90 m ? Assume an effective coefficient of friction equal to

7. Rate of change

I have some questions that I would like you to check please. Thanxs! Find the slope then describe what it means in terms of the rate of change of the dependent variable per unit change in the independent variable. 1. The linear function f(x)=4.6x+37

8. Calculus I

A spherical balloon is inflated at a rate of 10 cm^3/min. How fast does the radius change when the radius is 20 cm? Need help with set up and work through of problem.

9. Changes in Matter

Which of the following are examples of a physical change? a)change in physical state b)change in size or shape c)change in properties d)change in texture e)change in physical quantities f)change in substances Answer: a, b, and d Please correct me if I'm

10. Calculus

A television camera is positioned 2500 ft from the base of a rocket launching pad. The angle of elevation of the camera has to change at the correct rate in order to keep the rocket in sight. Also the mechanism for focusing the camera has to take into

11. Science

Evidence of a chemical change does NOT include A) evolving a gas. B) change in color. C) change in shape.*** D) change in temperature.

12. Science

Darwin assumed that evolutionary change was always slow and gradual. What was the first evidence that suggested evolutionary change might happen fast sometimes? a. homologous structures b. fossils c. reproduction rates d. DNA sequences Which of the

13. Physics

A car starts rolling down a 1-in-6 hill (1-in-6 means that for each 6 m traveled along the road, the elevation change is 1 m). How fast is it going when it reaches the bottom after traveling 70 m ? Assume an effective coefficient of friction equal to 0.10

14. Math

The revenue obtained from the sale of q units of a product is given by : R= 30q-(0.3q^2) A) How fast does R change with respect to q when: q=10 B) Find the relative rate of change of R, and to the nearest percent, find the percentage rate of change of R.

15. chemistry

Which best describes the physical change of an aluminum soda can after its crushed? A change in the mass of can B change in weight of can C change of volume of can D change in the specific heat of can

16. Music ! Help !

Which type of concerto was most popular in the Romantic period? A. concerto grosso B. solo concerto** C. Concertos were not popular in the Romantic period. D. none of the above Brahms emphasized the importance of the piano by including the cadenza in what

17. Esol

in which sentences fast used as adverb? The cars on the overpass moved fast -the fast car drove over bridge-the battle couldn’t hit the fast pitch-the clock is 10 minutes fast- --------------- my answer=The cars on the overpass moved fast

18. Science

Starting from rest, a boulder rolls down a hill with constant acceleration and travels 3.00 during the first second. How far does it travel during the second second? How fast is it moving at the end of the first second? How fast is it moving at the end of

19. Physical Science

So, please check my answers here: 1. Which example identifies a change in motion that produces acceleration? A) A speed skater moving at a constant speed on a straight track** B) A ball moving at constant speed around a circular track C) A particle moving

20. Biology

Ready… Set… GO! Imagine you are running a 100 m sprint. World-class athletes can do this in less than 15 seconds. Sprinting like this is an all-out effort, though. A lot of energy is needed to move this fast. Muscles have enough ATP in them to move

21. chemistry

Express the rate of the reaction in terms of the change in concentration of each of the reactants and products. 2D(g)+3E(g)+F(g)>>>>2G(g) + H(g) when D is decreasing at 0.30 MOL/Ls, how fast is (H) increasing?

22. english

My trip to the dentist was not fun and was not fast either. not fun, but not fast. neither fun nor fast.

Al and Bill live at opposite ends of the same street. Al had to deliver a parcel to Bill’s home, Bill one at Al’s home. They started at the same moment, each walked at constant speed and returned home immediately after leaving the parcel at its

24. math (create equation)

Abbie paints twice as fast as Beth and three times as fast as Cathie. If it takes 60 min to paint a living room with all three working togather, how long does it take for Abbie if she works alone?

25. Statistics

A college statistics class conducted a survey of how students spend their money. They asked 25 students to estimate how much money they typically spend each week on fast food. They determined that the mean amount spent on fast food is \$31.52 with a

26. Physics

A 60 kg skier is coming down a hill that has an incline of 35°. If the force of friction between the ski and the snow is 6 N, how fast does the velocity change per second?

27. English

Thank you very much for your corrections. I still have a few questions on my previous post. 1. I'm as fast as a lightning. I'm fast like lightning. I'm fast like a lightning. (?) I'm lightning fast. 2.The personification is usually made (recognizable?)

28. science

Question: Why are "apparently" small changes in pH so important in Biology? Answer: pH levels are each a 10-fold change so a change by 2 is actually a change by 1000. pH determines certain characteristics in organisms that allow them to live in certain

The angle of elevation of the camera has to change at the correct rate in order to keep the rocket in sight. Also the mechanism for focusing the camera has to take into account the increasing distance from the camera to the rising rocket. Let's assume the

30. Physics Ap

A flower pot falls from a windsill 30 meters above the sidewalk. How fast is it going when it hits the ground? How long does it take to reach the ground? How fast would it be going if it was thrown down at 8m/s instead?

31. Writing

The first challenge to the confidence of these amateur renovators come with buying tools and equipment. What correction should be made to this sentence? 1 change challenge to chalenge 2 change come to comes 3 change come to came 4 change come to coming 5

HELP FAST PLZ Which of the following could indicate that climate change is occurring rapidly in Nunavut Territory? a) Increased mineral mining b) Increased military presence c) The melting of permafrost d) Earthquakes My answer is b tell me if I'm RIGHT or

33. Chemistry

Which diffuses faster, the bad smell from a cat-pan due to ammonia or an expensive French perfume with an average molecular weight of 170 g/mol? How much fast does the fast one diffuse?

34. Math

What change you should be made in this sentence:Her parents thought she might need help copeing with her loss of her arm, but Bethany proved them wrong. F. Change parents to parent's G. Change copeing to coping H. Delete the comma J. Change them to her

35. ELA

What should be changed in this sentence? Yes, only six rooms is finished A. change Yes, to Yes B. change is to are C. change finished to finish D. make no change B? What should be changed in this sentence? Construction was started eight years ago in 1792,

36. Physics

If I have a diagram of Kepler's laws of planetary motion and it shows change in t1 larger than change in t2 and A1 larger than A2 and asks the question: which of the following is correct? 1.A3 = A3 2.change in t3 > change t3 3.if change t3 = change in t2,

If I have a diagram of Kepler's laws of planetary motion and it shows change in t1 larger than change in t2 and A1 larger than A2 and asks the question: which of the following is correct? 1.A3 = A3 2.change in t3 > change t3 3.if change t3 = change in t2,

38. Calculus- Can you help me solve for dr/dt

How fast does the radius of a spherical soap bubble change when you blow air into it at the rate of 15 cubic centimeters per second? Our known rate is dv/dt , the change in volume with respect to time, which is 15 cubic centimeters per second. The rate we

39. Physics

According to Faraday's law a change in flux through a circuit produces an emf. Which of the following does not produce a change in flux? (a) change in magnetic field (b) change resistance (c) change in area (d) change in orientation angle

Is there a mistake with the superlative adverb? 1. Thomas sauntered casuallyier to the podium and waited. a. Change casuallyier to most casually . b. Change casuallyier to casualiest . c. Change casuallyier to more casuallyier . d. Make no change. 2..

41. Science

Which of the following is NOT a way that machines provide a mechanical advantage? a.change direction b.change distance c.change power d.change force

42. ELA

What change should be made in this sentence? That is the job of the Supreme court A. change is to are B. change job to job, C. change court to Court D. make no change C?? What change should be made in this sentence? Technologies such as the Internet have

43. algebra

Hermes can travel 2 mi up Mt Olympus at a rate that is 18 mi/hr slower than he rides Pegasus down the same distance. The entire trip takes 14 min. How fast can he go up? How fast can he ride down?

44. physics

What change in temperature occurs in order to increase the volume of 16 L of ethyl alcohol to 17 L? a)56.8*C b)1450*C c)53.5*C d) 90*C I can't seem to get one of the answers. I used the equation (change in volume)=beta(initial volume)(change of time). 1

45. math

our man Ostap was going hame from kiev. He rod halfway-fifteen times as fast as he goes on foot. The second half he went by ox team. He can walk twice as fast as that. Would he have saved time if he had gone all the way on foot?

46. math

our man Ostap was going hame from kiev. He rod halfway-fifteen times as fast as he goes on foot. The second half he went by ox team. He can walk twice as fast as that. Would he have saved time if he had gone all the way on foot?

47. science (check!)

Darwin assumed that evolutionary change was always slow and gradual. What was the first evidence that suggested evolutionary change might happen fast sometimes? a. homologous structures b. fossils c. reproduction rates*****? d. DNA sequences

48. Chemical / Physical Changes Quiz check my answers

1. A ____________________ occurs when two or more substances interact forming a new substance. A. Physical change B. Chemical change **** C. Ecosystems D. Physical reaction 2. Is iron rusting a Physical or Chemical Change? A. Physical Change B. Chemical

49. Drivers Education

Most of the time, it is safe to drive... A- a little faster than the speed limit B- about as fast as the traffic around you C- as fast as the car in front of you D- as fast as you think it is safe I think that the answer is B, but the book doesn't have any

50. ELA

What change should be made in this sentence? These are used in the dark of night for carrying former slaves to the next stop on their journey. A.Change these to they B.Change are to were C.Change for to and D.Make no change B?

51. Physics

The fastest recorded pitch in Major League Baseball was thrown by Nolan Ryan in 1974. If this pitch were thrown horizontally, the ball would fall 0.809 meters by the time it reached home plate, 18.3 meters away. How fast was the pitch? So for i know that

52. Chemistry (Thermochemistry)

Is there any equation out there that links the change in enthalpy (H) to the change in cell potential/voltage (E)? Yes, but the relationship involves the Gibbs Free Energy, which is G = H - TS, snd S is the entropy change. The change in G is approximatly

Al and Bill live at opposite ends of the same street. Al had to deliver a parcel to Bill’s home, Bill one at Al’s home. They started at the same moment, each walked at constant speed and returned home immediately after leaving the parcel at its

54. Chemistry

Recall the reactions for this lab: S2O82- + 2I- → 2SO42- + I2 (slow) Reaction 1 The one that delays the solution turning blue: I2 + 2S2O32- → 2I- + S4O62- (fast) Reaction 2 b. All the S2O32 is consumed when the color change occurs. Therefore, Δ[S2O32]

55. Civics

The amendment process under the constitution allows the government to Add as many new laws as the congress can pass*** Remain exactly the way the founders envisioned Change to meets the needs of a modern society Levy taxes In times of war and national need

Jews fast to show God that they are sorry for their sins and to ask for forgiveness. Should the prisoners in the Holocaust fast? list three reason.

57. Chemistry

a+bc (fast) c+d->e (slow) e->f+b (fast) How do you determine the overall equation for these reaction mechanisms?

58. public health

A researcher plans to use a sample of 500 men and women attending a well-known online university to study the relationship between the number of fast-food hamburgers consumed in a month and BMI (body mass index). The null hypothesis is that there is no

59. math

Two trucks are traveling in the same direction, one going twice as fast as the other. At the end of 6 hours they are 204 miles apart. How fast is each travelling? Can you guys show me the answer i got 68 and 146 but its wrong

60. calculus

A man 2m tall walks away from a lamppot at 1m/s. If te lampatop the post is 5m above the ground, how fast is te tip of is sadow moving? How fast is the length of his shadow changing?

61. Chemistry

Why is a change in temperature also considered a sign of a chemical change? When molecules move around more frequently due to the temperature change, they are more likely to collide with other molecules. When bonds are broken or formed in a chemical

62. physics

rollercoaste starts at 12m high with a v of 1.2m/s and climbs to 9.0m Assume the track is frictionless... a) how fast is it going when it reaches the low pointbetween the crestss. b)how fast is it going at the top of the secondcrest (9.0m) i have no idea

63. Calculus

Let V be the volume of a right circular cone having height h and radius r and assume that h and r vary with time. a. Express the time rate of change of the cylinder in terms of h, r and their rates of change. b. At a certain instant, the height is 10 in

64. Thermodynamics

5 pounds of an ideal gas with R=38.7 and K=1.668 have 300Btu of heat added during a reversible constant pressure change of state, initial temperature=80°F. Determine: a.)the final temperature b.)change of internal energy change of enthalpy change of

65. science

What is a mutation? any change in the phenotype of a cell any change that is harmful to an organism any change in a gene or chromosome any change that is helpful to an organism

66. math

what are some examples of a rate? speed of a car, how fast a cake bakes, how fast your sister grows, the speed of your grades going down if you start to not turn in homework.

67. Dissolving Quick Check (science)

What is Physical Change? D. A change that does not change the chemical identity of a substance A piece of paper is torn into pieces. Why is this an example of physical change? B. The paper molecules remain paper molecules. Which statement best describes

68. physics

A beam of electrons with momentum p=10^-23 kg m/s passed through a narrow slit of width d=10^-5 m. What is the uncertainty component of the momentum in the x-direction due to the uncertainty principle (approximately)? a. change in p greater or equal to

69. Science

Darwin assumed that evolutionary change was always slow and gradual. What was the first evidence that suggested evolutionary change might happen fast sometimes? A. homologous structures B. fossils C. reproduction rates D. DNA sequences

70. example of change

a change that happens fast

71. science

1.Darwin assumed that evolutionary change was always slow and gradual. What was the first evidence that suggested evolution change might happen fast sometimes? A. Homologous structures B. Fossils*** C. Reproduction rates D. DNA sequences 2.Which of the

72. ELA

1.Which is the BEST way to improve this sentence? Our leaders believed that was the way to make the country the best it could be. A. Change believed to believe B. Change believed to did not believe C. Change make to made D. Change could be to could not be

73. English

1. He no more runs fast. 2. He can no more fast. 3. He is no more a baby. 4. He runs fast no more. ------------------------- What about the word order of 'no more'? #1,2,and 3 seem to be correct. What about #4? Can we put 'no more' at the end of a

74. science

1.i state of matter a physical change or a chemical change 2.why does heat go to coldest to hottest change? 3.what type of phase change occur when a substance change to solid to gas 4.what is an ex of sublimation

75. Calculus

if a penny is dropped from the top of a 320 ft. building, how fast will it be moving when it hits the ground? So we can find the speed of the penny as instantaneous rate of change of height of penny when it hits ground. Instantaneous rate of change of y

The story is "Trouble With Television" It has become fashionable to think that, like fast food, fast ideas are the way to get to a fast-moving, impatient public. How does the repetition in the sentence convey the author's negative attitude toward

77. sign language

how do you change a statement in american sign language For example: 1) change the orders of sign 2) change the palm orientation of the signs 3) change your facial expression 4) change the handshapes

78. Biology question pH

pH levels are each a 10-fold change so a change by 2 is actually a change by 1000. pH determines certain characteristics in organisms that allow them to live in certain areas so an alteration in pH changes their adaption skills. why is a change by 2 =

79. physics

How will the frequency of sound change how fast the sound travels?

80. Parts of Speech

I had a list of 50 words to change the parts of speech of. I got most of them but I can't seem to find these anywhere. Conjure - change to a noun and adj. pernicious - change to a noun and verb diffident - change to a noun and verb lament - change to an

81. AP Chemistry

Hey guys! What is the rate constant is particularly sensitive to: 1 A change in volume 2 A change in pressure 3 A change in product concentration 4 A change in reactant concentration 5 A change in the activation energy I feel like it is a change in the

82. Calculus Ab

A 26 foot step ladder is leaned up against a 30 foot building to reach a window near the top. The ladder is being pushed toward the building in a horizontal direction of 2 feet per second. 1. Find each related rate when the ladder is 10 feet away from the

A middle C (262 Hz) on a flute is heard when an air column that is 0.63 meters long resonates at zero Celsius. a.How fast will sound travel if the temperature increases by 10 degrees? b.By what factor will the frequency change?

84. A.P. Economics

1. Marginal is the change in one variable due to a unit change in another. For example, the change in the X value from 2 to 3 is 1 or a "unit change", which leads to an increase in Y from 12 to 21 or a "marginal increase" in the Y value of 9. The symbol Δ

85. science

Fireworks exploding in the sky and giving off light are an example of a(n) * 1 point exothermic change. endothermic change. change in mass. physical change

86. Calculus

A television camera is positioned 2500 ft from the base of a rocket launching pad. The angle of elevation of the camera has to change at the correct rate in order to keep the rocket in sight. Also the mechanism for focusing the camera has to take into

87. Chemistry

Recall the reactions for this lab: S2O82- + 2I- → 2SO42- + I2 (slow) Reaction 1 The one that delays the solution turning blue: I2 + 2S2O32- → 2I- + S4O62- (fast) Reaction 2 b. All the S2O32 is consumed when the color change occurs. Therefore, Δ[S2O32]

88. Calculus

a stone is thrown into a pond creating ripples that are concentric circles. the rate of change of the radius of the circle is 3 ft/min. if the radius is 0 at the time=0, how fast is the area increasing after 4 minutes

89. Marketing reserch

a marketing researcher analyzing the fast food industry noticed the following restaurant in Cali was 3.30 with a standard deviation of .40. yet in Georgia the average amount spent at a fast food restaurant was 3.25 with a standard deviation of .10. what do

90. Physics

1. if a 0.05kg coin is hanging from 22m above the ground: a. If you drop it, how fast will the coin be moving halfway to the ground? b. How fast will it be moving just before it hits the ground? If you could point me the right direction with equations that

91. Science

How do these rank in momentum 1 being least and the most 5 Fast car, stopped truck, slow car, Fast baseball, Fast feather I have 1. Stopped truck

92. American Democracy

Dramatic change in public opinion on basic issues in uncommon and is almost always a consequence of A> a change in the policy position of the president B> an extraordinary change in national conditions C> popular satisfaction with a government initiative

93. chemistry

A student has repeated the hydrolysis experiment with 2-iodo-2-methylpropane as the alkyl halide and found that the time to colour change was too fast to measure easily. Suggest two ways in which the reaction could be slowed down and by what process the

94. English

1. He is a good swimmer. = He swims well. 2. He is a fast learner. = He learns fast. 3. He is a careful examiner. = He examines carefully. 4. He is a slow worker. = He works slowly. ----------------- Are the expressions the same and correct?

95. Math

Could someone help me with these questions, I don't know question c) and d) Consider the function f(x) = (0.1x-1)(x+2)^2. a) Determine the function's average rate of change on -2

96. Math~Reinyyy

Could someone help me with these questions, I don't know question c) and d) Consider the function f(x) = (0.1x-1)(x+2)^2. a) Determine the function's average rate of change on -2

97. Pre-Calculus

How many parameters in a quadratic function in a vertex form change when you change the location of the vertex? ( P and Q change? The value of the coefficient( a ) may also change?)