# Questions Asked onMarch 10, 2013

1. ## Chemistry

Phosphoric acid, H3PO4(aq), is a triprotic acid, meaning that one molecule of the acid has three acidic protons. Estimate the pH, and the concentrations of all species in a 0.300 M phosphoric acid solution. kPa1: 2.16 kPa2: 7.21 kPa3:12.32 [H3PO4] = ?

2. ## Math

A cylinder shaped can needs to be constructed to hold 400 cubic centimeters of soup. The material for the sides of the can costs 0.03 cents per square centimeter. The material for the top and bottom of the can need to be thicker, and costs 0.06 cents per

3. ## Physics

Your grandfather clock’s pendulum has a length of 0.9930 m. If the clock loses 95.6 seconds per day, by how many millimeters should you adjust the length of the pendulum?

Complete each sentence with the correct form of the verb in parentheses. 1. La clase de matemáticas (terminar) a las cuatro. 2. ¿Te gusta (estudiar) psicología? 3. La profesora (explicar) el mapa. 4. Necesito (comprar) el libro de español. 5. Ustedes

5. ## Stats

A roulett wheel has 38 slots in which a ball can land two of e slots are green, 18 are red, 18 are black. The ball is equally likely to land in any slot, and each spin of the wheel is assumed to be independent. A)if the wheel is spun twice what is the

6. ## chemistry

Plastic articles can be chromium-plated by coating them with thin layer of graphite paste,placing them in a bath of aqueous chromium(III) sulphate and electroplating. a)Suggest a reason why the article is first coated with graphite. b)what substance could

7. ## Physics

A car is driven east for a distance of 46 km, then north for 29 km, and then in a direction 29° east of north for 22 km. Determine (a) the magnitude (in km) of the car's total displacement from its starting point and (b) the angle (from east) of the car's

8. ## Chemistry

Which of the following represent conjugate acid-base pairs? For those pairs that are not conjugates, write the correct conjugate acid or base for each species in the pair. a. HS-4-,SO4^2- B. HBr, BrO- c. H2PO4-, PO4^3- d. HNO3, NO2-

9. ## stats

An ice cream vendor sells three flavors: chocolate, strawberry, and vanilla. Forty five percent of the sales are chocolate, while 30% are strawberry, with the rest vanilla flavored. Sales are by the cone or the cup. The percentages of cones sales for

10. ## Chemisrty

How many kilojoules of heat are absorbed when 40.7g of MgO(s) is decomposed into Mg(s) and O2 (g) at constant pressure?

11. ## Stats

Directions: Suppose you have a standard deck 52 cards (4 suits: hearts, diamonds, clubs, and spades each suit has 13 cards (1/4 of the deck) and those 13 cards include one ace,and numbers 2 through 10 and 3 face cards: a jack a queen and king) suppose you

12. ## Statistics

A private opinion poll is conducted for a politician favors decriminalizing marijuana possession. How large a sample is needed in order to be 95% confident that the sample proportion will not differ from the true proportion by more than 2%.

13. ## chemistry

Ethanol, C2H5OH, is being promoted as a clean fuel and is used as an additive in many gasoline mixtures. Calculate the ΔH°rxn for the combustion of ethanol. ΔH°f [C2H5OH(l)] = -277.7 kJ/mol; ΔH°f [CO2(g)] = -393.5 kJ/mol; ΔH°f [H2O(g)] = -241.8

14. ## english iii

why did john choose the room in the yellow wallpaper?

15. ## Math

There are 16 cubic boxes of erasers in a case. What are all the possible dimensions for a case of erasers ? please help need in 30 minutes or less so confused help please thanks

16. ## Algebra 1

Sarah took the advertising department from her company on a round trip to meet with a potential client. A total of 9 people took the trip. She was able to purchase coach tickets for $380, and first class tickets for$1070. She used her total budget for

17. ## Physics

An alpha particle (charge +2e and mass 6.64 x10-27 kg) is traveling to the right at 1.50 km/s. What uniform electric field (magnitude and direction) is needed to cause it to travel to the left at the same speed after 2.65 s.?

18. ## Stats

Suppose you have a standard deck 52 cards (4 suits: hearts, diamonds, clubs, and spades each suit has 13 cards (1/4 of the deck) and those 13 cards include one ace,and numbers 2 through 10 and 3 face cards: a jack a queen and king) suppose you pick a card

19. ## physics

how a bleeder resistor (R = 260 k) is used to discharge a capacitor (C = 85.0 µF) after an electronic device is shut off, allowing a person to work on the electronics with less risk of shock. Figure 20.47 (a) What is the time constant? (b) How long will

20. ## stats

Mothers Against Drunk Driving (MADD) is a very visible group whose main focus is to educate the public about the harm caused by drunk drivers. A study was recently done that emphasized the problem we all face with drinking and driving. Five hundred

21. ## physics

A rubber band has a"spring constant" of 45 N/m. When the rubber band is pulled by a force of 9.8 N , how far will it stretch and what is potential energy?

22. ## chemistry

1L of a buffer composed of NaHC2O4 and Na2C2O4 has a pHof 4.0 and a total molarity of 1. a). what would the effect on the pH be of adding 1 gram of sodium hydrogen oxalate to this buffer? b). what would be the effect on the pH of adding 1 gram of sodium

23. ## Chem

How many grams of KO2 are needed to produce 370.0 L of O2 at 20.0 degrees Celsius and 1.00 atm? 4KO2(s) +2CO2(g) --> 2K2CO3(s)+ 3O2(g)

24. ## Chem

The density of gas containing chlorine and oxygen has density of 2.875 g/l at 756.0 mm Hg and 11 degrees Celsius what is the most likely molecular formula of the gas?

25. ## Chemistry

Water has an extremely high boiling point compared to other compounds of similar molar mass because of ? Hydrogen Bond Adhesive force Covalent bonding Dispersion Forces I believe the answer is A since hydrogen bond is a strong bond and thus require most

26. ## Calculus

For the following demand equation compute the elasticity of demand and determine whether the demand is elastic, unitary, or inelastic at the indicated price. (Round your answer to three decimal places.) x + (1/9)p - 27 =0 ; p=23

27. ## Physics

A 51.8 kg pole vaulter running at 11.5 m/s vaults over the bar. Her speed when she is over the bar is 1.26 m/s. Neglect air resistance, as well as any energy absorbed by the pole, and determine her altitude as she crosses the bar

28. ## statistics

If the average number of textbooks is 16, the standard deviation is 5, and the average age of a professors is 43, with a standard deviation of 8, which data set is more variable?

29. ## math

solve each equation 1) log5-log2x=1 2) 2log(x+1)=5

30. ## physics

A gold prospector finds a solid rock that is composed solely of quartz and gold. The mass and volume of the rock are, respectively, 13.3 kg and 3.56 × 10-3 m3. The density of gold is 19 300 kg/m3, and the density of quartz is 2660 kg/m3. Find the mass of

31. ## chemistry

What mass of F2 is needed to produce 116 g of PF3 if the reaction has a 77.4% yield?

32. ## Physics

A plate carries a charge of -3.2 µC, while a rod carries a charge of +1.5 µC. How many electrons must be transferred from the plate to the rod, so that both objects have the same charge?

33. ## chemistry

Find the concentration of Ag+ in a saturated solution of AgBrO3 that also contains 0.02M LiNO3, 0.02M KClO4 and 0.01M NaF.

34. ## physics

The position vector r of a particle moving in the xy plane is r=2ti+2sin[(pi/4)t]j , with is in meters and t in seconds. (a) Calculate the x and y components of the particle's position at , and 4.0 s and sketch the particle's path in the plane for the

35. ## math

Suppose that people's heights (in centimeters) are normally distributed, with a mean of 170 and a standard deviation of 5. We find the heights of 80 people. (a) How many would you expect to be between 170 and 175 cm tall? (b) How many would you expect to

36. ## math

The difference of the cubes of two consecutive odd positive integers is 400 more than the sum of their squares. Find the sum of the two integers.

37. ## Physical Science

A 1.00 kg block of ice at zero degrees celsius is added to a picnic cooler. How much heat will the ice remove as it melts to water at zero degrees Celsius?

38. ## Physics

An alpha particle (charge +2e and mass 6.64 x10-27 kg) is traveling to the right at 1.50 km/s. What uniform electric field (magnitude and direction) is needed to cause it to travel to the left at the same speed after 2.65 s.?

39. ## Physics

the volume of a monoatomic ideal gas doubles in an adiabatic expansion. by considering 135 moles of gas with an initial pressure of 330kPa and an initial volume of 1.2m^3, the gas is then expands adiabatically to a volume of 2.4m^3. FIND THE WORK DONE BY

40. ## English

1. What is he like? - He is strong and tall. - He is active and generous. 2. What does he look like? - He is reserved and friendly. - He is average height. (Are they all grammatical? What is the difference between question 1 and Question 2?)

41. ## stats

The following data were obtained from a survey of college students. The variable X represents the number of non-assigned books read during the past six months. x 0 1 2 3 4 5 P (X=x) 0.20 0.25 0.20 0.15 0.10 0.10 Find P( X > 1)

42. ## physics

A white billiard ball with mass mw = 1.32 kg is moving directly to the right with a speed of v = 2.91 m/s and collides elastically with a black billiard ball with the same mass mb = 1.32 kg that is initially at rest. The two collide elastically and the

43. ## ALGEBRA 2

Predict the population of bacteria for each situation and time period. -55 bacteria that double every hour a. after 3 hours b. after 5 hours

44. ## Physics

A pendulum has a period of 4.28 s on Earth. What is its period on Mars, where the acceleration of gravity is about 0.37 that on Earth?

45. ## Chemistry

use the bronsted-lowry model to label the acid-base pairs in the following equation for the ionization of water: H20(L) + H20(L) H30+(AQ) + OH-(AQ). EXAPLAIN

46. ## chemistry

For the reaction 2A(g) + B(aq) + 3C(l) D(s) + 3E(g), the concentrations at equilibrium are found to be: A: 2.3x10^3 Pa B: 1.8x10^-2 M C: 15.8M D: 12.5M E: 5.6x10^4 Torr Find the numerical value of the equilibrium constant that would appear in a

47. ## physics

A lost shipping container is found resting on the ocean floor and completely submerged. The container is 5.7 m long, 2.7 m wide, and 2.3 m high. Salvage experts attach a spherical balloon to the top of the container and inflate it with air pumped down from

48. ## chemistry

The formula weight of an acid is 82. In a titration, 100cm3 of the solution of this acid containing 39g of this acid per litre were completely neutralized by 95 cm3 of aqueous naoh containing 40g of naoh per litre. What is the basicity of this acid? Bob

49. ## angles

A survey team is trying to estimate the height of a mountain above a level plain. From one point on the plain, they observe that the angle of elevation to the top of the mountain is 25 degrees. From a point 1225 feet closer to the mountain along the plain,

50. ## stats

Suppose that 50 identical batteries are being tested. After 8 hours of continuous use, assume that a given battery is still operating with a probability of 0.70 and has failed with a probability of 0.30. What is the probability that fewer than 40 batteries

What are the core business activities of anglo american,nedcor and absa

52. ## MATH

There is a slide in the park that is 18 feet long. The ladder to the top of the slide is 7.5 feet long. If the ladder and the slide are perpendicular, what is "D", the distance from the top of the slide to the ground? Explain how you got your answer.

53. ## maths

Positive square root of 7+root 48 is ????

54. ## physics

Two circular holes, one larger than the other, are cut in the side of a large water tank whose top is open to the atmosphere. Hole 1 is the larger hole, and hole 2 is the smaller hole. The center of one of these holes is located 6 times as far beneath the

55. ## Graphing Circles - Finding the radius

A circle is tangent to the y-axis at the point (0,2) and passes through the point (8,0). Find the radius of the circle. I tried using distance formula but it doesnt work? Help please thanks.

56. ## Quantum M.

Why "In Hilbert Space noone can hear you scream"?

57. ## Math

A rectangular plot, 21m by 14m, is to be turned into a rectangular flower bed with a grass border around its outside edge. The grass border is to be 2m wide. What is the area of the flower bed? What is the area of the grass border?

58. ## slope and graphing

The lines y=5/12x and y=4/3 are drawn in the coordinate plane. Find the slope of the line that bisects these lines. How? Do we find the average? Do we build isosceles triangles?

59. ## Biology

Given that a cell's structure reflects its function, what function would you predict for a cell with a large Golgi apparatus?

60. ## economics

1. If average movie attendance is 250 million when prices are $7 a ticket and 200 million when prices are$9 a ticket, the elasticity of demand for movie tickets is about: A. 0.0. B. 0.9. C. 1.1. D. 1.8.

103. ## Introduction to Business Environment

1. An entrepreneur is an individual who has worked for a nonprofit organization for his entire career. (Points : 1) True False 2. In analyzing factors of production that make a country "rich," it has been observed that some relatively poor countries often

104. ## statistics

Last semester, a certain professor gave 23 As out of 279 grades. If one of the professor's students from last semester were selected randomly, what is the probability that student received an A? (Assume that each student receives one grade.)

105. ## maths

Two walkers set off at the same time from a crossroad and walk along flat straight roads inclined to each other at 68 degrees.If they both walk at a speed of 6km/h,find their distance apart 10 minutes later.

106. ## Introduction to Business Environment Chapter 2

The world's population is growing more slowly than expected, and there are some industrial countries in which growth might be so slow that there will be too many old people and too few young people to support them. (Points : 1) True False 2. In a free

107. ## Maths

The top of a T .V .tower casts a shadow 35 metres long when the angle of elevation of the sun 57 degree40 minutes.How high is the top of the tower?

108. ## chem biochem bio

You have the following stock solutions and solid chemicals in your lab: 1.5M NaCL 0.2M Tris buffer, pH 8.0 10 mg/ml Bovine serum albumin (BSA) MgCl2 (solid, anhydrous) MW = 95.211 g/mole (95% pure) How would you make 250 ml of the following solution???

109. ## math

write a polynomial function in standard form with the given zeros. 1-2i,2

110. ## chemistry help !!!!!!!!!!!!!!!!

a)A N6+ ion in its ground state absorbs an X-ray photon of energy 2.0000 keV. Explain what happens to the ion and why. b)Explain why the nitrogen ion N6+ is a hydrogen-like ion. Assuming the ion is for the major stable isotope 14N, state which sub-atomic

111. ## eth 125 Wk 5

what the the economic, social and political standing of african americans in todays society

112. ## Physics

Suppose you wish to make a solenoid whose self-inductance is 1.6 mH. The inductor is to have a cross-sectional area of 1.3 x 10-3 m2 and a length of 0.065 m. How many turns of wire are needed?

113. ## physics

A wire that is 0.45 m long and carrying a current of 9.5 A is at right angles to a 0.40 T magnetic field. How strong is the force that acts on the wire?

114. ## English

write a story with these words

115. ## Science

What property of water causes a water droplet to be shaped like a dome? Also can you please explain these words? Surface temperature, surface area and surface tension.

116. ## Life oriantation

Identify five practices in the above case study that are in contravention of the basic conditions of employment act.

117. ## Life oriantation

Identify five practices in the above case study that are in contravention of the basic conditions of employment act

118. ## physics

You launch a model rocket up into the sky. Right after launch the rocket is accelerating upwards at 10 m/s2. What is the magnitude of the net force in Newtons on the rocket if the rocket has a mass of 0.1 kg?

119. ## Statistics

"Working Mom’s Journal" reported that the mean time a mother, with her small children, spends in at the convenience store is 7.3 minutes. A sample of 20 moms is chosen from your neighborhood, and it is found that the mean time they spend in a convenience

120. ## Sentences

HOW DO YOU USE "PRIMARY ECONOMIC ACTIVITY" IN A SENTENCE?

121. ## math

4. Jenny swam 50 meters in 25 seconds. Which rate below is equivalent to Jenny's rate? (1 point) 1,200 meters in 8 minutes, 20 seconds 200 meters in 2 minutes 400 meters in 3 minutes, 20 seconds 800 meters in 4 minutes

122. ## science

what is qualitative data

123. ## Physical science

How much work is required to stop a car that is 800.0 kg car that is traveling at 20.0 m/s?

124. ## Health

Do you need a facebook and/or twitter account to have a socialGO?

125. ## Physical science

a 5.0 x 10^1g piece of a metal in thermal equilibrium with boiling water is removed and placed in 1.0 x 10^2g of a cooling water bath (specific heat= 1.00cal/g degrees celsius at 20.0 degrees Celsius . The final temperature of metal and the water bath is

126. ## Science

Liquid Nitrogen boils at -196 degrees Celsius . What is the temperture on the Kelvin scale ?

Yearly stock returns on India's Sensex Index are well described by a Normal model with a mean of 18.36% and a standard deviation of 14.65%. give the stock return cutoff for the middle 30% of all years. I used TI-83 Calc. for these. Can someone check them?

128. ## American History

What was the political goal of the Soviet Union following the end of WWII?

129. ## Physical Science

Calculate the number of grams of ice at 32 celsius that can be melted by 1g of 100 degrees celsius steam

130. ## social studies

Can you describe the kinds of conflicts that developed as europeans settled the americas?

131. ## strategic ffinancial mangement

XYZ company is contemplating the purchase of a new machinery costing rupees 30000with an expected life of 5 year at the end of which period , it can be solved for rupees 750 thousand in replacement of an old machine purchased 3 years ago for rupees 15000

132. ## algebra

creat a graph for the function that models the percentage of adulat height attained by a boy who is years old. then creat a graph for the function that models the percentage of adulat height attained by a girl who is years old.

133. ## maths-mensuration

The boy having a gold coin of diameter 2cm and thickess 2mm to a goldsmith for melting and drawing into a wire of diameter 1mm . the gold smith gave back a wire of gold of length 76cm with diameter 1mm. if the wastage allowed in melting could be a maximum

134. ## maths

A tourist viewing Sydney Harbour from a building 180 metres above sea level observes a ferry which is 850 metres from the base of the building.Find the angle of depression of his line of sight.

135. ## math

a ball tossed to a height of 4 meters rebounds 40% of its previous height. the total distance travelled by the ball by the time it comes to rest is?

136. ## Statistics

A company that manufactures exercise machines wanted to know the percentage of large companies that provides on-site health club facilities. A sample of 240 such companies showed that 96 of them provide such facilities on site. a. What is the point

137. ## physics

A sinusoidal voltage Δv = (65 V) sin (140t) is applied to a series RLC circuit with L = 100 mH, C = 175 μF, and R = 42 Ω. (a) What is the impedance of the circuit?

138. ## Khudu secondary

Car A of mass 1 000 kg,stationary at a traffic light,is hit from behind by car B of mass 1 200 kg,traveling at 18 m.s-1. Immediately after the collision car A moves forward at 12 m.s-1. 1. Assume that linear momentum is conserved during this collision.

139. ## physics

Gymnasts can do all sorts of ridiculous tricks on various equipment. In the rings event, the gymnast is supported by two rings attached by cords to the ceiling (see a picture here). If a gymnast weighs 75 kg and is motionless on the rings, what is the

140. ## Physical Science

How do you calculate the number of grams of ice at 32 degrees celsius that can be melted by 1g of steam?

141. ## physical Science

The Mass Of A Minibus with The Driver is 1500 kg.the Driver Is Moving At A Speed Of 30 m.s When He Notices That The traffic light Ahead Have turned To red.he Applies A Force Of 9000N on the brake pedal. A)calculate his deceleration if the taxi is empty

142. ## Math

Find a polynomial whose zeroes are double the zeroes of P(x)=x^3-7x^2-5x+2.

143. ## Math

How can I find 2 equations with infinitely many solutions? Thanks

144. ## physics

A wire that is 70 cm long, carrying a current of 6.5 A, is at right angles to a uniform magnetic field. The magnitude of the force acting on the wire is 0.60 N. What is the strength of the magnetic field?

145. ## World Mythology

Discuss what the Egyptian stories of Isis, Osiris, and Horus reveal about Egyptian culture and what The Enuma elish reveals about Babylonian culture. How, in particular, do their stories reflect the beliefs of their respective peoples?

log(3x+1)=2

147. ## Math

Dr. Jane I came up with this: 127,128,129,139,139,139,141,143,144,145,146,147,148,152 Does this seem to work?

148. ## Physics

A car with engine trouble slides 85 meters up along a 14 degree ramp before coming to a stop. If the coefficient of friction between the tires and the road is 0.9, what was the velocity of the car at the bottom of the ramp? I'm not looking for a solution

8^x+1=3

150. ## Physics

Buffy the Vampire Slayer is buffing up her 0.53 meter long arms by bench pressing. In 35 seconds she can lift 38 kilograms of mass 23 times. How powerful are Buffy's arms?

151. ## science

could you pl tell me the correct name for a person who sells an animal skin

152. ## algebra

i am to consider the line -x-3y=2 what is the parallel line slope and the perpendicular line slope

153. ## civics

I'm confused about what dual federalism is. I;ve read so many things and I'm still uncertain. My teacher said there are three dualites: duality of authority, nations, and citizenship. I know what the nations and citizenship examples would be but I'm not

154. ## maths

Simplify 3-2*root2 of whole root ??

155. ## maths

13-a*root 10 whole root = root 8 + root 5 then a equals to ???

156. ## Life orientation

How 2 deal with Unethical behaviour

157. ## english

what's an example of an appostion in the book Miracle Worker?

158. ## PHYSICS

At what angle should you launch a projectile from the ground so that it has the greatest time of flight?

159. ## Algebra 1

Solve the system by addition 10x+3y=4 -20x-6y=-8

160. ## Concavity-Calculus

Determine the concavity for f(x)= 4/x^2-1 I took the second derivative and solved for zeros. I got x=-1 and x=1. However when plugged into the orig. equation this results in 4/0 (undefined). Does this mean there is no concavity?

161. ## life orientation

1, Identify five practice that are in contravention of the basic conditions of employment ACT. 2,What according to the basic conditions of employment ACT applies with regard to the contravention that you have identify

162. ## Life oriantation

Types of careers

163. ## Maximum Area

We have 900 ft of fencing and we want to construct a back yard. If we are using the building as part of the barrier for the yard what are the dimensions that allow maximum area? I am not even sure how to start though I know I am supposed to calculate the

164. ## Physics

What is the period of a simple pendulum 83 cm long on the Earth?

165. ## maths

a number cosist of 2 digits.when the number is divided by the units digit.the answer is 3.if the digits are reversed.the new number exceeds the original no. by 36.determine the original number

166. ## physics

Shyanne (60 kg) has to walk across a single rope bridge to cross a river. When she's at the exact middle point, the rope bridge is deflected at an angle of 15 degrees from the horizontal. What is the tension in the bridge?

167. ## Sociology

This is the reason an employer might restrict employee internet access? a. Employees waste too much time on the internet b. viewing certain kinds of sites could lead to a hostile work environment

168. ## life orientation

five practices that are in contravention of the basic conditions of employment Act.

169. ## Maximum Area-Calculus-Edit

We have 900 ft of fencing and we want to construct a back yard. If we are using the building as part of the barrier for the yard what are the dimensions that allow maximum area? I am not even sure how to start though I know I am supposed to calculate the

170. ## math

describe the transformation of y=log (x-4) -1 2 from the graph of y=log X. 2 then state the asymptote and the domain range.

171. ## algebra

using substitution to solve -3x+y= -17 2x-3y=23

172. ## algebra math

Lucas makes crosses out of a scrap piece of wood by cutting it into two pieces. He always makes the cut so that the cross piece is one-third the length of the vertical piece. If a length of scrap wood is 28 inches, what will be the length of each piece of

173. ## Mathematics. Geometric sequences.

2+4+8+...is a geometric sequence. Prove the sum of the first n terms is two less than the (n+1)the term.

174. ## college general chemistry

3Co(NO 3 ) 2 (aq) + 2Na 3 PO 4 (aq) &---> Co 3 (PO 4 ) 2 (s) + 6NaNO 3 (aq) how do I find the molar mass of precipitate.X hydrate

243. ## algebra URGENT HELP

form a polynomial whose degree and zeros are given. don't expand a) degree 3,zeros,-2,0,4 b)degree 4,zeros, -2 multiplicity 3,1 multiplicity 1 solutions a)p(x)= x(x+2)(x-4) B)p(x) =(x+2)^3(x-1)

244. ## physics

determine the magnitude of the centripetal force that acted on the whirling ball??

245. ## Math

Ok, 1 football equals 13 ounces. 10 footballs would equal 130 ounces (right?). In order to find out how many pounds 10 footballs equal, would you divide 130 divided by 16?

246. ## Physical Science

How do you get the velocity of a roller coaster when you are only given 250.0kg and 2.000x10^4 Joules

247. ## English

What is noun?

248. ## Calculus Derivative- Taylor Series?

let f(x)= x/x-1 find f'(x) f ''(x) and a formula for f ^ (n) * x. I found the first and second derivatives but do not know how to make a general equation for this. I have not learnt the Taylor or Maclaurin Series either. Thank you.

249. ## Trig

the height of a flagpole if a student stands 37 feet from it and determines the angle of elevation to be 34 degrees and her eyes are 5.3 feet from the ground.

250. ## Physics

Buffy the Vampire Slayer is buffing up her 0.53 meter long arms by bench pressing. In 35 seconds she can lift 38 kilograms of mass 23 times. How powerful are Buffy's arms?

251. ## chemistry

a solution (S) is prepared by dissolving 50.0 g calcium chloride in 250 ml volumetric flask wich is then filled with distilled water up to the line mark. calculate the molar concentration of solution (S)

252. ## political science

which political ideology would be against abortion, and why?

253. ## math

1 basketball equals 20 ounces. So how many pounds do 8 basketballs weigh? please tell me how you got it!

254. ## science

There are three particles inside an atom. One of them has zero electric charge. Which one is it?

255. ## physics

A wire that is 46 cm long is parallel to a 0.54 T uniform magnetic field. The current through the wire is 4.5 A. What force acts on the wire?

256. ## physics

A wire that is 630 m long is perpendicular to a 0.31 T magnetic field. A 1.8 N force acts on the wire. What current is in the wire?

257. ## physics

The force acting on a wire that is at right angles to a(n) 0.80 T magnetic field is 2.1 N. The current in the wire is 6.7 A. How long is the wire?

258. ## physics

A 36 cm long copper wire carries a current of 6.0 A and weighs 0.45 N. A certain magnetic field is strong enough to balance the force of gravity on the wire. What is the strength of the magnetic field?

259. ## information technology help

give the weakness of microsoft power point with solution. 5 point

260. ## math

make up a set of 15 numbers with the following landmarks: maximum: 152 Range: 25 Mode: 139 Median: 142

261. ## Physics

How much work can a 252 W motor accomplish in 13 seconds?

262. ## physics

At what height above Earth's surface is the gravitational acceleration reduced from its sea-level value by 0.60%?

263. ## Physics

Suppose H⊗3|ϕ⟩=(1/2)√(|000⟩+|111⟩). What is |ϕ⟩? Specify the probability amplitude for each component: