# Questions Asked onFebruary 1, 2012

1. ## Physical Science

A bicycle and its rider together have a mass of 80 kg. If the bicycle's speed is 6m/s, how much force is needed to bring it to a stop in 4 seconds

2. ## Math

A bag contains 6 blue balls, 4 green and 2 red. If you put your hand in and picked a ball at random what are the chances it is blue?

3. ## Chemistry

A 5 gram sample of a hydrate of BaCL2 was heated, and only 4.3g of the anhydrous salt remained. What percentage of water was in the hydrate?

4. ## statistics

A researcher is measuring problem-solving times for a sample of n = 20 children. However, one of the children fails to solve the problem so the researcher has an undetermined score. What is the best measure of central tendency for these data?

5. ## science

A thermally insulated 50 ohm resistor carries a current of 1 A for 1 s. The initial temperature of the resistor is 10 degree Celsius, its mass is 5 g, its specific heat capacity is 850. What is the change in entropy of the resistor?

6. ## Physics

Two particles Q and P are shot up vertically.P was first shot with velocity of40m/s and after4s.Q was also shot up.If upon meeting the velocity ofP is 15m/s.determine(1)where they met.(2)the velocity with which Q was shot up.Take g= 10m/s2

7. ## Physics

An electron is released from rest at the negative plate of a parallel plate capacitor and accelerates to the positive plate (see the drawing). The plates are separated by a distance of 1.4 cm, and the electric field within the capacitor has a magnitude of

8. ## physics

A motorcycle traveling 91.0 km/hr approaches a car traveling in the same direction at 83.0 km/hr. When the motorcycle is 52.0 m behind the car, the rider accelerates and passes the car 16.0 s later. What is the acceleration of the motorcycle (in

9. ## geometry

An angle bisector of a triangle divides the opposite side of the triangle into segments 6 cm and 5 cm long. A second side of the triangle is 6.9 cm long. Find the longest and shortest possible lengths of the third side of the triangle. Round answers to the

10. ## Algebra 2

There are two spinners. Each spinner is numbered 1-4. Each spinner is spun once. Find the probability of spinning each of the following:2 on the first spinner and a 4 on the second spinner, both numbers the same, 3 on exactly one spinner, one number less

15. ## economics

Picabo borrows $1,000. To repay the amount she makes 12 equal monthly payments of$90.30. Determine the following: (a) The effective monthly interest rate (b) The nominal annual interest rate (c) The effective annual interest rate

Given one of the roots of the quadratic equation x^2+kx=12 is one third the other root. Find the possible values of k.

17. ## physics

it takes 14 seconds for a runner to go from 5m/s to 19m/s? how do you calucate acceleration

18. ## Trig

angle b=25 degrees, angle c=90 AB= 25 a. Find the length of side b to two decimal places. b. Find the length of side a to two decimal places in three different ways.

19. ## physics

Entrance and exit ramps for freeways are often circular stretches of road. As you go around one at a constant speed, you will experience a constant acceleration. Suppose you drive through an entrance ramp at a modest speed and your acceleration is 3.0 {\rm

20. ## leto

Find the angular velocity in radians/second of 4.2 revolutions in 2 minutes.

21. ## Math-trig

A Ferris wheel with a diameter of 100 feet rotates at a constant rate of 4 revolutions per minute. Let the center of the Ferris wheel be at the origin. The height h (in feet) of a Ferris wheel car located at the point (x, y) is given by h = 50 + y where y

22. ## Physical Science

A man has a mass of 70 kg. A) What would his weight be on Jupiter which as an acceleration of gravity of 25m/s^2? B) What would the mass of a person have to be in order for him to weigh that amount on earth?

23. ## chemistry

Zenapax® is used as part of immunosuppressive therapy for transplant patients. The dosage is calculated on the basis of 1.0 mg/kg. What is the proper dose for a 175 lb patient? (Given: 1kg = 2.205 lbs) 175*2.205=385.875

24. ## alg2/trig

starting salary for a job is $30,000 with a guaranteed raise of$5,000 each year for the first 5 years. write an explicit formula to represent how much money you would earn each year. please somone help!

25. ## Math

solve for x 2^x=0.125 5^2x=39 13^x=27

26. ## geometry

A park at the end of a city block is a right triangle with legs 150 ft and 200 ft long. Make a scale drawing of the park using the following scale 1in:300ft.

27. ## Physics

A freight train has a mass of 1.7 107 kg. If the locomotive can exert a constant pull of 7.6 105 N, how long does it take to increase the speed of the train from rest to 64 km/h?

28. ## Math

1. Jacksonville Technical College received $3,445,553 in state aid on September 15 for the fall academic semester. The vice-president for finance decided to invest$2,000,000 in a 2-month investment that pays 11.5% simple interest. How much interest will

29. ## university studies

how do you think presenting informatoion differs from writing a paper about that information?

30. ## geometry

find the geometric mean of 275 and 11 275/x=x/11 x^2= 3025 x=sq rt 3025 now I'm not sure what to do.

31. ## physics

A car starts from rest at a stop sign. It accelerates at 4.6 m/s^2 for 7.4 s, coasts for 1.8 s, and then slows down at a rate of 3.5 m/s^2 for the next stop sign.How far apart are the stop signs?

32. ## 3rd grade math (not algebra!)

There are 18 bikes in a bike rack. There are 4 more blue bikes than yellow bikes and 2 less yellow bikes than green bikes. How many bikes of each color are in the rack?

33. ## economics

Which banking service provides easy access to money, monthly statements, easier bill payment, and more security than carrying cash?

34. ## physics

A ball rolls off a platform that is 5 meters above the ground. The ball's horizontal velocity as it leaves the platform is 4.8 m/s. (a) How much time does it take for the ball to hit the ground? (Use g = 10 m/s2.) . s

70. ## Pre-Algebra with PIZZAZZ

First, what is the code for What should you say when you meet an angel? Second, what are the answers to it for 9-14?

71. ## english 9

in the poem "the journey" by mary oliver,what is the "you" do in this poem?

72. ## math

How many kilometers can light in 1 year?

asked by glenn help help help
73. ## Precalculus

I keep getting wrong answer for this question. Write as a single logarithm log(x+1)+2log(2x+1)-log(x-3)

79. ## biology

Describe how atoms in a compound are held together thank you

asked by glenn help help help
80. ## math

How many kilometers can light travel in 1 year? How many kilometers can light travel in 365.25 days? Show me Thank You

asked by glenn help help help
81. ## Math

Given points P(2,-1), Q(-4, 2), and M(5,3), find coordinates of a point K such that MK is perpendicular to PQ.

82. ## math

While riding your motorcycle, you break to miss hitting a dog. your tires leave a skid mark as you come to a stop. the skid mark forms four angles when it crosses the painted line on the side of the road. one angle formed a 62 degree angle. what other

83. ## physics

suppose a 1.50 kg object is suspended from the end of a silicone band. when the object is pulled down and released, the band vibrates at a frequency of 2.08 s-1. calculate the spring constant of this silicone band including units.

84. ## math

Bob and Jack play a shooting game. In this game, they have a net at a distance. The net is made up of 1 mm thick wires. The wires run vertically and horizontally to form a mesh that has 5 mm square openings between them. A bullet 2 mm in diameter must be

85. ## English

I urgenlty need you to check these sentences. Thank you. I'm emailing you the list of objectives again since my first draft was incomplete. I still have to add a few things as to the impact of the project on our students and the European value attached to

86. ## Sammons

how to find the product of 38 and 75?

87. ## geometry

Findd the numerical measures of the angles whose measures are: x, 3x-10, and 3(55-x)

88. ## math

A nanometer(nm ) is one billionth of a meter (1 nm=10-9m). If 100 million atoms make a row 1 cm in length what is the diameter of one in nanometers?

asked by glenn help help help
89. ## English (Beowulf)

[Beowulf's Funeral] "On a height they kindled the hugest of all Funeral fires; fumes of woodsmoke Billowed darkly up, the blaze roared And drowned out their weeping, wind died down And flames wrought havoc in the hot bone-house, Burning it to the core.

90. ## math 8

10 choices of ice cream and 5 choices of toppings what is the probability that you get favorite ice cream and topping ?

91. ## physics

An automobile travelling with an initial velocity of 25m/s is accelerated to 35m/s in 6 second. The wheel of automobile is 80cm in diameter. Find the angular acceleration

92. ## Human Services

Creating a Budget Various budget approaches play an important role in resource allocation in human service organizations. You are the executive director for a local government workforce agency that focuses on providing career- and work-related skills. The

93. ## Physics

A worker drives a 0.509 kg spike into a rail tie with a 2.08 kg sledgehammer. The hammer hits the spike with a speed of 63.3 m/s. If one ﬁfth of the hammer’s kinetic energy is converted to the internal energy of the hammer and spike, how much does the

94. ## Physical Science

A force of 20 Newtons gives a brick an acceleration of 5 m/s^2. What is the mass of the brick?

95. ## physics

i am going a center of gravity problem, with the x=w1(x1)+w2x2..../ W1+W2.. and i keep getting the wrong answer can someone please tell me what i am doing wrong this is the problem:Four objects are situated along the y axis as follows: a 1.94 kg object is

96. ## Physical Science

The string of a certain yo-yo is 80 cm long and will break when the force on it is 10 N. What is the highest speed the 200 g yo-yo can have when it is being whirled in a circle? Ignore the gravitational pull of the earth on the yo-yo.

97. ## Physics

A hiker, who weighs 990 N, is strolling through the woods and crosses a small horizontal bridge. The bridge is uniform, weighs 3550 N, and rests on two concrete supports, one at each end. He stops one-fifth of the way along the bridge. What is the

98. ## Russian History

Did Peter the Great end communism?

99. ## Chemistry

Find the value of delta H net for the following equation: SnBr2(s) + TiCl4(l) -> TiBr2(s) + SnCl4(l) I know that I already posted this once but I am still lost on what to do. I know that TiCl4=-804.2 and SnCl4=-511.3 but I thought that the values for SnBr2

100. ## ELA

Can someone give me a similie sentence having the word nice in it?

101. ## social work

If you were appointed Patient Advocate for a close relative (parent, sibling, spouse, child, etc.) would you be able to carry out their wishes, including a wish to end their life if...? Would age or disability make a difference in your ability to serve as

102. ## Russian History xD

I'm doing a project on Russian art, and I'm kinda confused. These are some things I got down. They're just jumbled thoughts. But did communism ending cause the renaissance? Since Russia was a communist country, art used to be used to make the government

130. ## math

At an arts and crafts fair, 65% of the vendors are selling either wooden handicrafts of paintings. What is that percent rounded to a compatible fraction?

131. ## Geometry

Find the area of a rhombus with a 45 degree angle and sides of 12m long?

divide 5x^3y^2+xy^4 by xy how do you work this?

133. ## math

Gwen was planting tomato plants in a row 6 2/3 yards long. She put the plants 2/3 yard apart. How many plants were in the row?

134. ## Ochem

What volume of 6.43% (wt.vol.) NaOCl solution is required to oxidize 221 mg of 9-fluorenol to 9-fluorenone? I'm not to sure of where to start with this problem. Please help!

135. ## economics

A prolonged economic contraction is called ?

136. ## physics

A hockey puck has no friction on it. It has a mass of 0.28 kg and experiences a force of 48 newtons. What is its acceleration?

137. ## Algebra

Students in an English class took a final exam. They took equivalent forms of the exam at monthly intervals thereafter. The average score S(t), in percent, after t months was found to be given by . a) What was the average score when they initially took the

138. ## math

The temperature outside rose 41 degrees during a 12 hour period. If the temperature rose the same number of degrees every hour, what is a good estimate of the number of degrees the temperature rose each hour?

139. ## geometry,math

Find 3 upper case letters that look the same when rotated 180 degrees. Then, what letter's 90, 180, and 270 degree rotations has this outline? This is also the inside lines formed by the rotation of what letter?

140. ## Organic Chemistry

How many moles of hypochlorous acid are needed to react with 0.257 mol of 9-fluorenol? Molecular weight of hypochlorous acid = 52.46 g/mol MW of 9-fluorenol = 182.22 g/mol

141. ## math

Alex takes 3 hours longer to complete a certain job than Barry does. If they can complete the job by working together in 3.6 hours, how long would it take Alex to complete the job working alone? 3.

142. ## french

what does virage mean? i cannot find it in my english to french dictionary....

143. ## AGL 2 (Geometric Series)

Is their a formula for finding the Sum for Geometric Series?

144. ## chemistry

An antibiotic is sold in 4.0 mL ampoules that contain 60.0 mg of drug (60.0 mg/ 4.0 mL). How many milliliters of the antibiotic should be withdrawn from the ampoule if 20 mg are to be administered to a patient?Use correct number of sig figs 0.75ml?

237. ## english

Like the writers in the short story collection, Mori reveals his character's thoughts and feelings by providing dialogue, describing events, and showing how dialogue and action affect each other. Identify a character and quotation from one of the short

238. ## science

what technologies or what do explorers need to survive a volcano underwater and space?

239. ## Science

Which of the following describes a learned behavior? A. A cat nursing its kittens B. A parrot singing words to a song C. A mocking bird building a nest D. A zebra's black and white stripes. B?

240. ## cell crossword puzzle 14 across

what is 14 across or the cell crossword puzzle. I had golgi bodies but it does not fit.

241. ## english

i starting to write a descriptive story and i have to switch on and off from reality like in Walter Mitty story. so I think of writing about childhood having flashbacks of past. but i not know how starting it off.

242. ## algebra

Sam earns R1 350 per week doing tiling. How much does sam earn in an hour if he works 45 hours a week?

270. ## elapsed time

10:30am to 1:20 what is the answer

271. ## math

SIN .9271 = to what degree?

272. ## math

A tree cast a 24 foot shadow at the same time a fence post 5 feet high cast a 4 foot shadow. How tall is the tree?

273. ## Math

Quintera and her family were flying from New York to Florida. Their plane departed at 10:155A.M. and arrived in Florida at 1:37P.M. How long was Quintera's flight? A. 9h 18min B. 14h 42min C. 3h 42min D. 2h 42min D?

280. ## Physics- moles and gas laws

What is the volume occupied by 8.0 g of hydrogen under a pressure of 2.8 atm and a temperature of 300 K?

what does self imposed mean? please explain in a simple way thanks

282. ## Physics

A car is traveling 17 m/s when the driver sees a child standing on the road. He takes 0.8 s to react, then steps on the brakes and slows at 7.0 m/s2. How far does the car go before it stops?

283. ## math

Cheryl is training for a long bicycle ride. Jim will drive Cheryl back and her bicycle 60 miles from town, drop them off, and then drive back to town. Cheryl then will ride her bicycle back to town. On the way back to town, Jim will travel at 50 miles per

284. ## math

Explain how to find the sum positive five plus negative nineusing chips, a number line, or the rules for adding integers. Give the answer with your explanation

285. ## Math

Rashad awoke at 6:45A.M. He spent a half hour taking a bath and getting dressed. He took 20 minutes to eat his breakfast and another quarter of an hour to ride his bike to school. What time did Rashad arrive at school? A.7:55A.M. B.7:45A.M. C.7:50A.M.

286. ## Trig

Its a 30-60-90 triangle there's a line in the center that= 10 a. What is the length of the hypotenuse of triangle ABC? b. What is the length of the shorter leg of triangle ABC? c. What is the length of the longer leg of triangle ABC?

287. ## Math

To have a constant concentration of .25 ppm of a substance with 18,000gal/water flowing, how much would I need to add per minute? Does that make any sense? How would I go about answering that? I don't want the answer, but maybe just a push in the right

288. ## math

Bottle A, containing 12L of 15% acid, is combined with bottle B, containing 3L of 25% acid. Bottle C is 26% acid. How much of each solution is neede to have 24L of a 20% acid solution?

289. ## Algebra 2

Write an equation in slope-intercept form for the line that satisfies the following condition. passes through (5, 14), parallel to the line that passes through (12, 2) and (35, 19)

290. ## calc

Use L’Hopital’s rule to find the limit of this sequence (n^100)/(e^n) ...If you do L'Hop. Rule it would take forever, right? You would always get an (e^n) at the bottom and will have to use the L'Hop. rule 100 times to find the limit...100*n^99,

291. ## Math

Corey jogs 5km every morning to get ready for a 5km race he is going to run next month. How many meters does Corey run in one week? A. 5000m B. 10000m C. 3500m D. 35000m D? Mrs.Sharp made a punch recipe that called for 20 fluid ounces of cherry juice. How