# Questions Asked onMarch 3, 2014

1. ## Science

1. How does groundwater cause erosion and deposition? a. When acidic water soaks into the ground, water dissolves limestone, resulting in the formation of caves. *** b. When a river overflows, it moves downhill, resulting in the formation of caves. c. When

2. ## Science

I can’t put the diagram (picture) here so... I type down: Hope it help! left side there is an arrow pointing to the square, it measures 5 N (big) In the middle (between the arrows) there is a square Right side there is an arrow pointing to the square, it

# 2. When __________ forces act on an object, they cause the object to move. •Balanced •Unbalanced (?CORRECT?, MY ANSWER) •Friction •Net # 4. Which of the following terms BEST describes the scenario below? A meteor moving through outer space

4. ## chemistry

When aqueous solutions of potassium carbonate and magnesium nitrate are combined, solid magnesium carbonate and a solution of potassium nitrate are formed. The net ionic equation for this reaction is:

5. ## Science- Brady , Ms. Sue , Damon

How would playing a game of soccer, baseball, or basketball be different if inertia didn't exist?

6. ## Physics

A spring of unknown force constant is attached to a rod so that it hangs vertically. With no mass attached, the spring has a length of 12.0 cm. When a student attaches a mass of 50 grams, the spring stretches to a length of 18.0cm. Determine the force

7. ## math 3

elena packed 48 cubes into this box. each cube has edges that are 1 centimeter. how many layes of cubes did elena make?

8. ## Science

Which step in the nitrogen cycle is accelerated at the beginning of the eutrophication process? A. denitrification B. nitrogen fixation C. producer uptake of nitrogen D. consumer decomposition

9. ## math

24 tenths - 1 one 3 tenths =

10. ## Physics

A dynamics cart with a friction pad is placed at the top of an inclined track and released from rest. The cart accelerates down the incline at a rate of .60m/s^2. If the track is angled at 10 degrees above the horizontal, determine the coefficient of

11. ## Chemistry

Calculate the pH for each of the following cases in the titration of 50.0 mL of 0.240 M HClO(aq) with 0.240 M KOH(aq). The ionization constant for HClO can be found here.

12. ## chemistry

Write the net ionic equation for the following molecular equation. HBr is a strong electrolyte. HClO is a weak electrolyte. KClO(aq) + HBr(aq) KBr(aq) + HClO(aq)

13. ## Math Gr. 7

Is it possible to polygon with 290 deg angle? Plz explain

14. ## Chemistry:Important!!!!!!!

20.00 mL of a H2SO4 solution with an unknown concentration was titrated to a phenolphthalein endpoint with 39.13 mL of a 0.1061 M NaOH solution. What is the concentration of the H2SO4 solution?

15. ## science

A new moon is discovered orbiting Neptune with an orbital speed of 9.3 ´ 10 m/s. Neptune’s mass is 1.0 ´ 10 kg. What is the radius of the new moon’s orbit? What is the orbital period? Assume that the orbit is circular. (G = 6.673 ´ 10 N·m/kg)

16. ## Physics

A baggage cart full of luggage is coasting at a speed vA across the airport taxiway. When eighteen percent of the mass of the cart and luggage is thrown off the cart, parallel to the ground and in the forward direction, the cart is brought to a halt. If

17. ## RATIO

In a school gym, the ratio of the number of boys to the number of girls was 4:3. After a 160 boys left the gym, the ratio became 4:5. How many girls was in the gym?

18. ## Science- Brady, 2 more!

#1. Which statement is true about the image below? 7 N -> |rectangle| |square| 5 N -> |square| •0 N •5 N •10 N (?CORRECT?, MY ANSWER) •25 N

19. ## English/Literature/Poetry (Writeacher)

Have you read the poem called "Problems With Hurricanes" by Victor Hernández Cruz? If so, could you assist me in answering the questions below? If not, could you possibly read this poem online and help me, anyways? Thank you. 1. What is the author

20. ## Science

A cat is walking down a sidewalk and spots a dog in a nearby yard. The cat strats to run in the opposite direction and then quickly climbs a tree. Which of the the following changes most accurately describes the movement of the cat? speed distance

21. ## math

on a boat tour there are half as many children there are as adults. ther are 40 people on the tour how many children are there

22. ## Math 1

The tire on franks bike moves 75 inches in one rotation how many rotations will the tire have made after frank rides 50 feet?

23. ## AP Chemistry

Which of the following salts is the most acidic in aqueous solutions? 1. KBr 2. NaI 3. Al(NO3)3 4. BaCl2 5. AgNO3 6. Fe(NO3)2 7. Pb(NO3)2

24. ## chemistry

When aqueous solutions of potassium hypochlorite and nitric acid are mixed, an aqueous solution of potassium nitrate and hypochlorous acid results. Write the net ionic equation for the reaction. Use H+ for the hydronium ion.

25. ## History check

What did Francis Cabot Lowell and Samuel Slater have in common? Their inventions allowed the U.S. economy to decrease dependence on slaves. Their inventions made Transatlantic communication more efficient. They imported technological advances from Great

26. ## AP Chemistry

50.0 mL of an HCl solution with a pH of 3.5 neutralizes 200.0 mL of a Ca(OH)2 solution. What is the molarity of the Ca(OH)2 solu- tion?

27. ## Chemistry

Many portable gas heaters and grills use propane, C3H8(g). Using enthalpies of formation, calculate the quantity of heat produced when 17.0g of propane is completely combusted in air under standard conditions. Assume that liquid water is forming.

109. ## need asap trigg

simplify the expression by using a double angle formula or a half angle formula: a. 2 tan 7 degrees /1-tan^2 7 degrees b.2 tan 7 theta / 1-tan^2 7 theta

Draw Bohr diagrams of a magnesium atom bonding with fluorine atoms. Draw atoms then electron transfer and finally the ions that form. What type of bonding occurs? Draw Bohr diagrams of 2 hyrdogen atoms bonding with an oxygen atom by sharing electrons to

111. ## Intermediate Algebra

The base of the triangle is 5 cm greater than the height. The area is 33 cm^2. Find the height and the length of the base. The height of the triangle is ___ cm The base of the triangle is ___ cm

112. ## English

Using commas They planned the see the men's, women's, and doubles' finals. Fergas won the entire tournament, and he became the youngest champion in the history of the tournament.

113. ## physics

an unpolarised light is incident on the boundary between two transparent media. State the contition when the reflected wave is totally plane polarised.

12. The American Revolution most likely encouraged the Mexican people to revolt against Spain by A. exposing Spain’s lack of resources. B. introducing new political principles to Mexico. (I pick B.) C. inspiring the French Revolution. D. showing that a

115. ## English

Using hyphens Between acts the theater was completely dark, but the orchestra continued to play any-way.

116. ## physics 1

Two newly discovered planets follow circular orbits around a star in a distant part of the galaxy. The orbital speeds of the planets are determined to be 43.6 km/s and 63.5 km/s. The slower planet's orbital period is 8.36 years. (a) What is the mass of the

117. ## English

Using colons The special exhibit on birds contains the following types: prehistoric birds, seabirds, and domestic birds. The letter we wrote to the museum began Dear Sir: Please let us know when the special exhibition on penguins will be shown at your

118. ## English

adding dashes where needed There was a loud boom -- what a fright from the back of the theater. We all turned around -- I even jumped up to see what it was. It was part of the play -- imagine that meant to add suspense. I'd love to see the play again --

119. ## physics

Two spacecraft in outer space attract each other with a force of 45 N. What would the attractive force be if they were \frac{1}{5} as far apart? F_{attractive} = _____________N (no rounding up)

120. ## Math

Solve for x: 3x + 20 and 2x + 24

121. ## home,school &COMMUNITY

DESCRIBE THE CONFLICTING EMOTIONS THE PARENT MAY HAVE THAT CONTRIBUTE TO THIS FEAR

122. ## English

Using commas Dr. Perillo, a nutritionist, is an expert on proper eating. "Students, it's important to eat a well-balanced diet," she said. "Yes, but how do we know what the right foods are?" asked one student.

123. ## chemistry

SO42- + HAsO2+ 2H+H3AsO4 + SO2 In the above redox reaction, use oxidation numbers to identify the element oxidized, the element reduced, the oxidizing agent and the reducing agent. 1. name of the element oxidized: 2. name of the element reduced: 3. formula

124. ## math

A marble is 12 mm in diameter. what is the smallest height of a box that is 96 mm square that can hold 200 marlbles and still have a lid fit on the box without interference? A.12mm B.24 C.36mm D.48mm E.60mm

125. ## Math

Order these factions from the smallest to largest 7/10 3/4 2/5 1/2 2/3

126. ## S.S

Which of the following minerals generates the most income for British Columbia? Copper

127. ## Geometry/Trig

A plane is flying and show an air speed of 130 mi/h. However, there is a 20 mi/hr crosswind. What is the resulting speed of the plane.

128. ## Mathematics

Express the Complex Number -1-i in polar form. how is complex no expressed in polar form? what is polar form of complex no? Please help

129. ## pre algebra

three of every seven sales transaction are on credit cards, what percent of the transactions are not on credit cards

130. ## Chemistry 2

For a second order reaction A B, calculate the t1/2 (half life) and the k(constant) and also fill in the blanks. A (concentration) t(time) 20 0 sec 10 ? 5 40 sec 3 ? ? 200 sec t1/2=? k=?

131. ## pharmacy math

Rx Potassium 2:5 Chloride solution 30ml. How many milliliters of a potassium chloride 3:5 solution do you need to prepare the order?

132. ## Pre-Calculus

Write an equation in slope-intercept form of the line with the given parametric equations. x=t+6 y=2t-4

133. ## banking

Suppose you borrow $5,000 and make 12 equal payments to retire the debt. If the finance charge for the loan is$400, what will the amount of each monthly payment be?

166. ## Grammar Check

Identify the underlined word as either a direct object or the object of a preposition. 1. I have a _job_.... A: direct object?

167. ## physics

A 4.4kg ball with a velocity of 4.6m/s in the +x-direction collides head-on elastically with a stationary 2.1kg ball. Part A What is the speed of the first ball after the collision? Part B What is the direction of the velocity of the first ball after the

168. ## Pre-Calculus

Find vector a X vector b

169. ## Physical Sciences

A man with a mass of 80KG stands on a bathroom scale on the floor of a lift. Determine the reading of the scale if the lift moves downwards with a constant velocity at 2metre per second.

a. Use the formulas for lowering powers to rewrite the expression in terms of the first power of cosine: (cos^4)x (or cos*x to the 4th power) b.Use an appropriate Half- Angle Formula to Find the Exact value of the expression: 1. tan 15(Degrees) 2. cos

171. ## Physics

A 6 kg brick is falling at a rate of 48.9 m/s toward the earth at a current height of 14 m. What is the total mechanical energy of the brick? (total mechanical energy= Eg+Ek+Eel) What is the answer in Joules?

172. ## Chemistry 2

For the reaction: 2A + 3B 4C Kinetic data are as follows A B time needed 10mL 5mL 720 seconds 20mL 5mL 180 seconds 20mL 10mL 90 seconds 30mL 20mL ?? The rate of the equation is?

173. ## math

0.26 ,0.2616 bar 16 which one is irrational number

174. ## Chemistry

What would be the volume of 5.0 moles of gas at STP? Can you explain how to do it please?

175. ## Chemistry 2

For the fist order reaction A B, calculate the t1/2(half life) and k(rate constant) and also fill in the blanks. A-Concetration t-time 20 0 10 ? 5 40 sec 3 ? ? 500 sec t1/2=? k=?

176. ## stats

chance+of+winning+if+you+play+10+times+what+is+the+probability+of you+winning+once if you have a 10% chance of winning each time

177. ## Math

What are the intercepts for 1.9x-1.9y=3.8

178. ## Geometry

what is the image of a(3 -1) after a reflection, first across the line y=3, then across the line x=-1 (-5,7) (3,-1) (-5,-1) (-1,-5)

179. ## Math

what is a measurement that is not equal to 8 cups?

180. ## Spanish

¿Cómo quieres que sean / funcionen los medios de comunicación? I just wanted to know what this sentence translates to Muchas gracias

181. ## Math Trigg

Find sin 2x, cos 2x, and tan 2x from the given infomation csc x=4, tan x < 0

182. ## Mathmatics

a. Use the formulas for lowering powers to rewrite the expression in terms of the first power of cosine: (cos^4)x (or cos*x to the 4th power) b.Use an appropriate Half- Angle Formula to Find the Exact value of the expression: 1. tan 15(Degrees) 2. cos

183. ## math

the triangle CDE, m

184. ## english

an alternate ending to the story, the bicycle by Jillian Horton 200-250 words in lenght please!! It's due tomorrow and I'm stressing out. If you haven't read it before here's the

185. ## Math

Mrs. Marcincavage allowed each student in her math class to drop the lowest of their five test scores. When Matthew dropped the lowest of his test scores, a 60, his test average increased by 5 points. What is Matthew’s new test average?

186. ## physics

An astronaut in full gear has a weight of 2900 N on Earth. Jupiter; weight on planet relative to earth is 2.53 and weight of a 150-lb person is 380. How much will the astronaut weigh on the Jupiter? W_{Jupiter} =________________ N Neptune; weight on planet

187. ## Maths

I’m a 4-digit number. My 1st 2 digits from the left are divisible by 5. My 3rd and 4th digits from the left are divisible by 9. The sum of my digits is 18. Each of my digit is different. I’m divisible by 4. I’m less than 6000. My units digit is twice

188. ## Physics

A plane flying in a straight line at constant altitude of 2000 m above the ground with a speed of 200m/s drops an object. Explain how the velocity of the object is actually affected by air resistance. Show how the resistivity force of air and velocity of

189. ## statistics

Conduct an ANOVA comparing participants recall will vary as a function of stress levels. Conduct an ANOVA comparing participants recall at Time 1 across all three stress level conditions (low, medium,and high). Conduct post hoc tests if needed, using the

190. ## Math

Consider the initial value problem y'' +5y'+6y=0, y(0)=4.87 and y'(0)=Beta where Beta>0 Determine the coordinates t_m and y_m of the maximum point of the solution as functions of Beta.

191. ## Biology

Which earthworm organ serves excretory function by excreting metabolic waste?

192. ## Math help

How do you factor this trinomial? Need help!! 5u^2-3uv-2v^2

193. ## math

Find the percent of increase to decrease to the nearest percent… 1. 12 to 4 2. 15 to 20

194. ## AP Chemistry

If 252mL of 2.5molar HCl solution is added to 343 mL of 2.8 molar Ba(OH)2 solution, what will be the molarity of BaCl2 in the resulting solution?

195. ## math

write an equation of the line containing the given point and parallel to the given line. express your answer in the form y=mx+b (6,9)x+4y=5

196. ## Algebra 1

Explain why any two regular n-sided polygons would be considered to be similar and how knowing this information could help in solving real-world problems.

197. ## Spelling

Is absent a repeated consonant or different consonant? Need help

198. ## physics

a rock with a mass of 2 kg is thrown from the top of a cliff 75 m high with a velocity of 10m/s. how much Kinetic energy does it have when it gets to the bottom?

199. ## Trigg

Find sin 2x, cos 2x, and tan 2x from the given infomation csc x=4, tan x < 0

200. ## Math

How do you find the derivative of ln(xy)=x+y

201. ## math

the right triangle ABC,

202. ## physics

The acceleration due to gravity on a certain planet is about 6.5 \frac{m}{s^2}. What would a 78-kg scientific instrument weigh on Titan? W_{instrument} =______________ N (no rounding up)

203. ## Grammar

Are the commas correctly placed in the sentence below? "Overall, the plan is going to stop bullying by raising awareness, and by outlining consequences."

204. ## Chemistry

a mixture of 34.0g of ammonia and 50.0g of elemental oxygen react to form elemental nitrogen and water. Please write a balanced chemical equation for this reaction. Find the theoretical yield of water in grams and give the amount of excess reactant in

205. ## Science

What types of experiments may be helpful to determine how to keep E. Coli from spreading quickly?

206. ## Physics

The lower half of an inclined plane is rough the upper half being smooth a particle is allowed to slide from the top and is brought to rest by friction just as it reaches the bottom, find the ratio of the force of friction to the weight of the particle

207. ## health

Posture, ________, is maintained as a result of muscle contraction.

Draw 2y+8=0

209. ## Algebra 1

Explain why any two regular n-sided polygons would be considered to be similar and how knowing this information could help in solving real-world problems.

210. ## math

the ratio of the length of a blanket to its width is 12 to 8. how many times greater is the length than the width of this blanket? if the length of the blanket is 9 feet, calculate the width in inches.

211. ## Math

You have 14 gloves in the lost and found. 5 of them are red, two are black, 4 are grey and the rest are yellow. What fraction of the gloves are Yellow?

212. ## health

Which one of the following items should be included in a personal contract? A. A sample contract from another person B. The stage of change when you finish C. The time of day you begin your plan D. The opinion of related specialists and experts

213. ## English

Fill in the blanks? If a goofball and a bowling ball are rolling at the same speed, the.blank? Ball has a greater momentum?

214. ## Chemistry 2

What is the molarity of 50.0 mL solution of aluminum sulfite that contains 80.0 g of this salt? (Al=27.0, S=32.0,O=16.0)

215. ## Pre-Calculus

Phil Dawson is a professional place kicker for the Cleveland Browns. On average, he kicks the ball at a 41 degree angle and with an initial speed of 70 feet per second. For future reference, goal posts are 10 feet high in the NFL. a) Write parametric

216. ## Physics

A 6 kg brick is falling at a rate of 48.9 m/s toward the earth at a current height of 14 m. What is the total mechanical energy of the brick? (total mechanical energy= Eg+Ek+Eel) What is the answer in Joules?

217. ## Vinegar

What does vinegar feel like? And does it make a sound when it's poured?

218. ## math

A construction worker on the roof of a 17 meter building in NYC is speaking to his boss on the ground. If the boss is standing 9 meters from the building, from the angle of depression from the construction worker to his boss. I used the formula Tan=o/a tan

219. ## Physics

If I carry a 27 kg bag horizontally across the floor a distance of 14 m. How much work did the FORCE OF GRAVITY do on the bag?

220. ## history

As president, Grover Cleveland antagonized A. Western cattlemen and businessmen by restoring many acres of public lands to the federal government B. Democrats by putting many of his fellow Republicans into political positions C. Mugwumps by allowing

221. ## Math

(cosx - sinx)^2 + (cosx + sinx)^2 = 2 Iam in this step: 2cos^2(x) + 2sin^2(x) = 2 How can I make the equation on the right equal 2

222. ## Trigonometry - LONESTAR

Simplifying steps without using the calculator for: tan(cos^-1(-1/10)) cos(sin^−1(1/x)) Assume x is positive tan(cos^−1(12/13)) cos^−1(cos 150°) This is pretty much the entire section we are doing. My teacher is a robot and has us self teach

223. ## cincinati public school

worksheet 13 unit rates comparison

224. ## life orientation

Five symptoms of diabetes

226. ## social studies

Alexander Falconbridge eventually became governor of a colony for freed slaves in Sierra Leone in Africa, What do you think motivated him to do this?

227. ## history

As president, Grover Cleveland antagonized A.Western cattlemen and businessmen by restoring many acres of public lands to the federal government B.Democrats by putting many of his fellow Republicans into political positions C.Mugwumps by allowing

228. ## USA STUDIES

What were some of the benefits of the Articles of Confederation?

229. ## math 2

a mannufactue ships its poducts in boxes with edges of 4 inches. if 12 boxes are put in a caton and completely fill the caton, what is the volume of the carton?

230. ## pharmacy math

In what proportion should you combine 1:30 soaking solution and distilled water to create a 500ml solution of 1:70 concentration?

231. ## Physics

A 500 kg go-cart is traveling at 15 m/s when the driver slams on the brakes. The cart comes to a stop in 7 m. If the same braking force is applied, how far will the cart travel after braking if it were traveling at 32 m/s?

232. ## Pre-Calculus

A 15N force acting at 15 degrees north of east and a 18N force acting at 79 degrees north of west act concurrently on an object. What is the magnitude and direction of a third force that produces equilibrium on the object? Show sketch and work. ------

233. ## Pre-Calculus

Write Parametric equations of -3x+1/2y=2

244. ## Physics

The mass on a pendulum is given 20 J of potential energy. If the mass is 2 kg, how high, in meters, was it raised? Please round your answer to the nearest whole number and use g = 10 m/s2

245. ## Physics

Can I know what is the 10 benefits of using different units of measurements?

246. ## Chemistry 2

When we mix 25.0 mL, 2.0 M BaCl2 with 25.0 mL, 3.0 M Na2SO4 what is the balanced equation? What is the ionic equation? what is the net ionic equation?

247. ## Math

Gold medalist, in freestyle skiing, Justine Duford-Lapointe, is trying to get to her hotel. She can travel north and east. The grid is a 5*5 followed by a 2*2, followed by a 8*8. How many ways can she take to her hotel?

248. ## English

listen= to pay attention in hearing ----------------------- What is the meaning 'in hearing'?

249. ## MATH

2BOYS:7GIRLS=5BOYS:?GIRLS OPTIONS ARE 24,25,124,15 PLEASE CALCULATE IT.

250. ## health

whos on here for ashworth.?

251. ## chemistry

How would applying an external pressure on the following equilibrium affects the distribution of iodide between the polar (aqueous) and non polar (varsol)

I need the the volume of this cylinder as if it were a cone. Radius = 10cm Height = 20 cm

253. ## english

How is the more direct performative aspect of drama and/or poetry reflected in these forms?

I need the volume of the cylinder Radius = 10 Height = 20

255. ## math

I'd you bought a picture frame that cost 25 dollars and it was half off the original price. What is the decimal and percent that represents the discount she received.

256. ## Science

What types of experiment may be helpful to determine how to keep E. Coli from spreading quickly?

257. ## Math Analysis 2

assume that x=x(t) and y=y(t). Let y= (x^3)+4 and dx/dt=5 when x=2. dy/dt when x=2

258. ## college algebra

if a computer cost and electronics dealer $300 and she sell them for$800 what is her rate of Profit based on the selling price

259. ## math

how do you do this problem h=2A/b1+b2 solve for b1

260. ## MATH

Determine the equation of a line that is perpendicular to the line 2x+3y=7 and passes through the point (0,6) What is the volume if the prism in terms of y? 1st dimension: 2y+1 2nd dimension: y 3rd dimension: y+3

261. ## math

Ramesh bought 150 share at the rate of rs. 10 per share. company give 15% profit and he get 10% on his investment.find the rate of share.

262. ## Science

What is the origin of volcanism?

263. ## math

sec tangent= 2 square root of 3/3 and sin tangent= -1/2; find cot tangent

264. ## math101

how do you solve 1/4x-18=1/2x-6

265. ## Microbiology

What is the reducing power and how many protons are pumped by the fatty acid side chains of triglyceral?

266. ## Chemistry 2

For the fist order reaction A B, calculate the t1/2(half life) and k(rate constant) and also fill in the blanks. A-Concetration t-time 20 0 10 ? 5 40 sec 3 ? ? 500 sec t1/2=? k=?

Mark is alternating sqaure tiles with lengths of 4in and 2 in. along the edge of a 6 foot long wall. If he starts with a 4 in tile and ends with a 2 in tile, how many tiles will he use in all? Draw a diagram to solve.

268. ## Social Studies

How can you make a good closing statement for Eastern Africa?

269. ## geometry

how can i prove (s-b)/r = r(lowercase a)=(s-c)?

270. ## Math

what is 5-16 tenths

271. ## Math

1.9x-1.9y=3.8 (graph)

(x + 6)^2=16

274. ## math101

-7+z ¡Ü 3z+7 and 2(z-3)

275. ## Math

What is 45r^2*3.14*494?

276. ## math

Five houses, next door to each other, are on the even side of the road. They are all three digit numbers and the largest is a perfect cube.The second lowest is a triangle number.

277. ## Science

What types of experiments may be helpful to determine how to keep E. Coli from spreading quickly?

278. ## world history

who built the suez canal why was it built and what technology was used?

279. ## pre calculus

solve nonlinear inequality x^4 > x^2

280. ## Math

what is 11 4/9 + 5 1/3

281. ## math

what would 2 yards,1 foot,10 inches equal to,i put 83 inches but im not sure?

282. ## Math oops

2.1x+3.5y=10.5