1. Science- Electric and Magnetic Potential Energy

1. At which position will the bar magnets most likely experience the least magnetic potential energy between them? D - position 4 2. A positively charged test object is moving toward the positive source charge in an electric field. B - It's potential

2. Math

An airplane pilot over the Pacific sights an atoll at an angle of depression of 7°. At this time, the horizontal distance from the airplane to the atoll is 3,729 meters. What is the height of the plane to the nearest meter? 458 meters 454 meters 3,667

3. Math

1. To find the height of a pole, a surveyor moves 120 feet away from the base of the pole and then, with a transit 8 feet tall, measure the angle of elevation to the top of the pole to be 36*. to the nearest foot, what is the height of the pole? A) 87

4. Chemistry-Dr.Bob222

A 25.0 mL sample of 0.125 M pyridine is titrated with 0.100 M HCl. Calculate the pH at 0 mL of added acid.

5. Math

About 8% of the population of a large country is nervous around strangers. If two people are randomly selected, what is the probability both are nervous around strangers? What is the probability at least one is nervous around strangers?

6. science

when copper metal is added to silver nitrate in solution, silver metal and copper (II) nitrate are produced. what mass of silver is produced from 100.g Cu?

7. Math

7 10 of your friends prefer to take a math test on Friday. 7 20 prefer Friday and Wednesday. What fraction of those who prefer Friday also prefer Wednesday?

8. math

Directions: Follow the instructions below to design a fair race for the new video game Animal Tracks. 1. Choose two animals with different speeds. You can choose from the chart that starts at the bottom of this page or do research to choose your own. 2.

9. Math pls help me

A dance school has 54 students who learn salsa and 23 of those students also learn ballet. There are 15 students who do not learn salsa but learn ballet and 10 students do not learn either salsa or ballet. Which table best shows the relative frequency of

10. Math

The distance around the Earth at the equator is about 40074 kilometers find the equatorial diameter of Earth to the nearest kilometer A.12,762 Km B.25,512 Km C.62,884 km D 6,339,700 Km

11. Algebra

A campground consist of 10 square campsites arranged in a line along the beach the distance from the edge of the campsite to the water is 4 yards the area of the campground including the beach Is 1050 yd.² what's the width of one campsite

12. Maths

Simplify under root (12+6 root 3) + under root (12- 6 root 3)

13. Language Arts

The poem I'm reading is "The Importance of Being Earnest" by Oscar Wilde 1. Which sentence from the passage provides the best expression of the theme? a. "its perfectly easy to be cynical." b. "... once a week is quite enough to dine with one's own

Medians $\overline{AX}$ and $\overline{BY}$ of $\triangle ABC$ are perpendicular at point $G$. Prove that $AB = CG$. In your diagram, $\angle AGB$ should appear to be a right angle.

15. physics

A 0.280 kg croquet ball makes an elastic head-on collision with a second ball initially at rest. The second ball moves off with half the original speed of the first ball. (a) What is the mass of the second ball? (b) What fraction of the original kinetic

16. Math

1. In triangle DEF, m angle D=45, m angle E=63, and EF=24 in. What is DE to the nearest tenth of an inch? A) 30.3 in. B) 15.1 in. C) 32.3 in. D) 10.5 in. Is the Answer A? I'm not quite sure though since i'm confused on this question. If someone could help

17. Life orientation

What are the six ways that human violation influences individual groups and broader south african community

18. math help pls pls pls

The table below shows the age of some participants in a quiz competition and the number of questions they could answer correctly: Age (years) (x) 15 21 17 22 16 19 18 Number of questions they could answer (y) 17 17 17 17 17 17 17 What is the correlation

19. physics

A stationary bicycle is raised off the ground, and its front wheel (m = 1.3 kg) is rotating at an angular velocity of 12.3 rad/s (see the drawing). The front brake is then applied for 3.0 s, and the wheel slows down to 3.3 rad/s. Assume that all the mass

20. Physics

An electric field measured near a point charge of 3.0 X 10^-6 C has a strength of 1.50 X 10^5 N/C How far is the point from the source charge

21. P.E Health

Which one best describes comparison shopping? A. You are trying to decide if you should buy the size 5 levi's shorts either in blue or black. B. You cannot decide between the quarter pound with white cheese and all the toppings or the one with yellow

22. Geometry

In $\triangle ABC$, we have $AB = AC = 13$ and $BC = 10$. Let $M$ be the midpoint of $\overline{AB}$ and $N$ be on $\overline{BC}$ such that $\overline{AN}$ is an altitude of $\triangle ABC$. If $\overline{AN}$ and $\overline{CM}$ intersect at $X$, then

23. Chemistry

If a tire can hold 19L of air at 175 kPa and 25° C, what volume of air can the tire hold at 215 kPa and 30° C? Possible answers: A. 13.7 L B. 15.7L C. 23.0L D. 19L

24. science

To conserve water, an animal's kidneys can pump ions across cell membranes, allowing water to move by

25. Math

if the perimeter of a rectangle is 120 units what is its area in square units

26. math

Which statements are true for irrational numbers written in decimal form? A. Irrational numbers are nonterminating. B. Irrational numbers are repeating. C. Irrational numbers are nonrepeating. D. Irrational numbers are terminating.

27. Chemistry

Estimate the value of the equilibrium constant at 500 K for each of the following reactions. 2H2S(g)⇌2H2(g)+S2(g) I have calculate my delta H which is 168.9 kj/mol but I don't know where to go from there

28. Algebra

I'm doing Permutations. Simplify 9! a.45 b.362,880 c.265,456 d. 125,396 I think it's a.

29. math

the length of a rectangle is 23 centimeters less than five times its width. Its area is 42 square centimeters. Find the dimensions of the rectangle

30. U.S. History (Check)(REED)

1. What day was the attack on Pearl Harbor? A: The attack on Pearl Harbor took place on December 7, 1941. 2. Why was the attack so devastating for America? A: The Pearl Harbor attack was so devastating for America because most of the U.S. Navy was

79. Chemistry

Assuming the solution you used was 95% ethanol by volume and that the density of ethanol is 0.816g/mL, how much water and carbon dioxide are produced in the experiment? Equation: C2H6O+3O2-->2CO2+3H2O

80. trig

Solve triangle ABC. (If an answer does not exist, enter DNE. Round your answers to one decimal place.) a = 63, c = 50, ∠C = 53°

81. Physics

A -6 x10^-6 point charge is .030 m from another point charge and experiences a repulsive fore of 180 N what is the magnitude of the other charge

82. Geometry

Altitudes $\overline{XD}$ and $\overline{YE}$ of acute triangle $\triangle XYZ$ intersect at point $H$. If the altitudes intersect at a $123^\circ$ angle, and $\angle YXH = 26^\circ$, then what is $\angle HZX$ in degrees?

83. math

if a boy is 24 year younger than his father and after two years the sum of their ages will be 40.how old is the father?

84. Chemistry

The pH of human blood needs to be between 7.35 and 7.45. You want to prepare a buffer solution that gives a pH of 7.40. You decide to use a sodium phosphate buffer: the acid is H2PO−4 and the conjugate base is HPO2− 4. You want the concentration of the

85. math

In a tank, there is 100 liter of water before starting the taps. If each tap fills 25 liters per houIn a tank, there is 100 liter of water before starting the taps. If each tap fills 25 liters per hour and 5 taps continue to fill 4 hours and 4 taps for

86. Math

Here it just says this: Solve triangle ABC. (If an answer does not exist, enter DNE. Round your answers to one decimal place.) b = 67, c = 33, ∠A = 70°

88. physics

A 9.94-m ladder with a mass of 21.6 kg lies flat on the ground. A painter grabs the top end of the ladder and pulls straight upward with a force of 226 N. At the instant the top of the ladder leaves the ground, the ladder experiences an angular

89. Math

One number exceeds another by 12 . if five times the smaller number is subtracted from three times the larger number the result is 20. Find the numbers

90. math

What is the greatest prime factor of 3105?

91. Calculus

Determine whether the sequence converges or diverges. If it converges, find the limit. (If an answer does not exist, enter DNE.) limit n approaches infinity of an = e^(−6/sqrt(n))

Guys my problem is maths solve x and graphs

93. math

a university surveys a randomly selected group of 250 freshmen. In the group, 20 of the freshmen were left-handed. If there are 8,000 in the freshman class, what is the best prediction fo the number of left-handed freshmen students? THANK YOU!

94. Physics

In the Biomedical and Physical Sciences building at MSU there are 135 steps from the ground floor to the sixth floor. Each step is 16.0 cm tall. It takes 5 minutes and 40 seconds for a person with a mass of 63.9 kg to walk all the way up. How much work did

95. Physics

Use the work-energy theorem to solve each of these problems. You can use Newton's laws to check your answers. Neglect air resistance in all cases.

96. Math

The perimeter of the rectangle is 120 units what is its area in square units L=3n W= n What formula do I use? A) 675 B) 900 C) 1225 D) 2700

97. math

The time it takes me to wash the dishes is uniformly distributed between 11 minutes and 20 minutes. What is the probability that washing dishes tonight will take me between 15 and 16 minutes? Give your answer accurate to two decimal places.

98. math

Khalid is now four times as okd as his daughter. Ten years ago,if the sum of their ages was sixty. Find the present age of his daughter?

101. Chemistry

Will 1 L of 1 M NaCl contain more chloride ions than .5L of 1M MgCl2? Explain.

102. Math

A high school has 438 students with about the same number of males and females. Describe a simulation to predict how many of the first 50 students who leave school at the end of the day are female.

103. Ethics

Things we are morally obligated NOT to do (e.g., lie, cheat, exploit others) can be termed: A. correlated duties. B. negative duties. C. positive law. D. positive duties. is it D

104. Math

Carlos and Krystal are taking a road trip from Greenville to North Valley.Each has their own map,and the scales on their maps are different. A. On Carlos's map,Greenville and North Valley are 4.5 inches apart. The scale on his map is 1 inch = 20 miles. How

105. MaThS LITERACY; GEOGRAPHY;TOURISM AND ECONOMIC

I passed matric in hig Cetificate so i want to be something but i don't know what ?

106. English rammar, Please correct my sentenced gramma

April 20,2016 Genecito Jimenez Lot 32 Blk 96 Bautista st. Zone 10 Dasmarinas City Cavite. tel: 046-4725645 Dear Sir, Mrs. Maria Teresa P. Eleon is permanently staying in my apartment with her family and she is a good person in our community. Please kindly

107. geomtry

The figures are similar. The area of one figure is given. Find the area of the other figure to the nearest whole number. The area of the smaller trapezoid is 771 m

108. math area

A rectangular tabletop is 4 ft long and 30 in. wide. Which is the area of the tabletop?

109. math

at night, a 6ft man is walking towards a 8ft lamp post at a speed of 3ft/sec how fast is his shadow changing?

110. life orientation

why you choose the specific human rights violation or discrimination.

Find the area of the region enclosed by the intersection of the circle x^2+y^2=4 and the parabola y=x^2. Show work

112. Calculus

The Riemann sum s for f(x)=4x^2, 0

113. math

a book has bern sold at 10% loss for Rs 36.what was its origional price?

114. US history

Ulysses S. Grant was not considered a popular president, even though he had been a popular war hero. Which statement describes why? A. He refused to work with Radical Republicans in Congress. B. His ability to lead was marred by scandal. C. He took a

115. classical mechanics

A projectile is launched down ward from the top of inclined plane of angle alpha in the direction making an angle beta with the incline. assuming the projectile hits the incline, find the expression for the range and determine the maximum expression for

x2 - 4px +8

117. Statititics

Airline overbooking is a common practice. Many people make reservations on several flights due to uncertain plans and then cancel at the last minute or simply fail to show up. Jet Green airlines’ planes hold 100 passengers. Past records indicate that 20%

118. Physics

In the Biomedical and Physical Sciences building at MSU there are 135 steps from the ground floor to the sixth floor. Each step is 16.0 cm tall. It takes 5 minutes and 40 seconds for a person with a mass of 63.9 kg to walk all the way up. How much work did

119. physics

A 43.0-kg boy, riding a 2.20-kg skateboard at a velocity of 5.30 m/s across a level sidewalk, jumps forward to leap over a wall. Just after leaving contact with the board, the boy's velocity relative to the sidewalk is 6.00 m/s, 8.00° above the

120. Polar, Cylindrical, and Spherical Coordinates

Let C be a circle that passes through the origin. Show that we can find real numbers s and t such that C is the graph of r = 2s*cos(theta + t) I think that I could start by writing it like R^2=(x-h)^2+(y-k)^2 where R is the radius of the circle, but I

122. Chemistry

To completely react 17g of barium hydroxide, how many grams of hydrochloric acid is needed?

123. physics

A capacitor A1B1 of capacitance C1=2microF is charged under a voltage U1=20V and then isolated. a) Calculate the voltage U (A1B1) between its plates, and it's charge Q1 and energy W1. b) The plates A1 and B1 are connected to those A2 and B2 of an uncharged

124. Further maths

The first term of an AP is equal to thrice the common difference. What is the sixth term of the AP,if the common difference is 8

125. working with children with disabilities

A teacher wants to know why Ben , a preschooler,wake up every morning at about 3.00 and refuses to go back to sleep .the teacher should.

126. goegraphy,tourism,mathlit,lifeorientation,agricult

what career path can I follow if I am doing the above subjects

127. science

find the resistance of a nichrome wire of length 2.2m& diameter 2mm.

128. math

A swimmer can swim a distance of 36 kilometer in the direction of water current in the same time, which he require to swim 36 kilometer in the opposite direction of water current in stream. If in still water, swimmer has speed of 12 kilometer per hour more

129. math

Mike was bored so he played with some colored blocks arranging them in a role he put 1 block in the first row 2 blocks in the second roll, 4 blocks and the third row and 8 blocks in the fourth row. If this pattern continues, how many blocks will Mike put

130. Chemistry

In a student's experiment, when 40 mL of 6% (w/w) hydrogen peroxide solution was reacted with 10 mL 0.5 M FeCl3 solution, a ΔrH of -3,382 J was calculated. Calculate ΔH for this reaction in kJ mol-1. Give your answer to 2 decimal places, do not include

131. Math

Femi spent 1/4 of his money on transport, 2/5 on food and has #700.00 left. how much did he start with?

132. Chemistry

If a half life of a radioactive element is twelve years,find the decay constant

133. Calculus

Let 𝑅 be the region bounded by the four straight lines 𝑦=𝑥, 𝑥+𝑦=4, 𝑦=𝑥−2 and 𝑥+ 𝑦 = 2. Find the surface area of the surface obtained by rotating the region 𝑅 about the 𝑥-axis for 1 complete revolution.

134. math

is apportionment the best way to achieve fair representation?

135. math

femi spent 1/4 of his money on transportation, 2/5 of it on food and has #700.00 left. how much did he start with

136. algebra

After 2009 2009 the sales of new cell phones without cameras began declining. The number of people y (in thousands) who bought a cell phone without a camera can be estimated by the equation y=−30x+270 y=-30x+270, where x is the number of years after 2009

137. Math

57 is the product of 3 and Helena's savings.

138. US history

What long term cause led to South Carolina seceding from the United States? A. The Growth of the anti-slavery movement B. Debate over the expansion of slavery into the territories C. Increased sectional tensions due to new laws D. The breakdown of the I

139. Algebra. NEED HELP ASAP PLEASE

After 2009 the sales of new cell phones without cameras began declining. The number of people y (in thousands) who bought a cell phone without a camera can be estimated by the equation y=−30x+270 y=-30x+270, where x is the number of years after 2009. a)

140. english

As a teenager, I was not obsessed about eating out. My family would eat at a restaurant at least twice a week. Every time we went anywhere, it was a challenge for my parents to find a suitable food and a nice quality restaurant. Fortunately, exception I

141. School

The Robinson's have quite a lot of family pets. They have 3 times as many budgies as they have cats and there are a total of 30 legs between them. Complete the following statement. The Robinson's have ____cats and ____budgies. I need help, can someone show

142. English

1. I will visit Paris this summer. 2. I shall visit Paris this summer. 3. I intend to visit Paris this summer. (Does #1 mean #2 or #3? Does 'will' mean a simple future or "a will"? 4. I like children. I will be a teacher. 5. I like children. I shall be a

143. algebra

The Robinson's have quite a lot of family pets. They have 3 times as many budgies as they have cats and there are a total of 30 legs between them. Complete the following statement. The Robinson's have ____cats and ____budgies. I need help, can someone show

144. Math

)ne canned juice drink is 25​% orange​ juice; another is 55​% orange juice. How many liters of each should be mixed together in order to get 20L that is 21​% orange​ juice?

145. Chemistry

Use the collision theory to explain the increase in rates of the other reactions

146. Math

Mona takes out a $12,000 student loan to help pay for her first 2 years of college, then 2 years later needs another loan for$14,000 to get her through to graduation. She graduates 4 years and 9 months after acquiring the first loan, and payments are

Regression Analysis: Avg. Tot. Score versus %Takers, T/S Ratio Model Summary S R-sq R-sq(adj) R-sq(pred) 34.2385 79.91% 79.06% 76.83% Coefficients Term Coef SE Coef T-Value P-Value VIF Constant 1118.5 39.5 28.34 0.000 %Takers -2.547 0.187 -13.62 0.000 1.05

148. technology

You want to discard your old computer and want to securely erase the data from your hard drive. What can you use to do this and what is the process called?

149. math

find the product greatest four digit number and smallest three digit number using property of multiplication?

150. Health

The lungs are? A. Connected by the mediastinum B. Separated by the mediastinum C. Divided into 7 lobes D. Divided into 9 lobes C?

151. Physcs

A circular parallel plate capacitor with plate radius 8.2cm and plate separation .15mm is connected in series with a 16V ideal battery and a 790 ohm resistor at t=0. At time t=2.4e-6 seconds, what is the induced magnetic field that lies along the outer

152. Trigonometry

Solve: tan(2theta - 34deg)= sqroot3; theta = [real numbers of degrees]

153. History

Name two nations in Eastern Europe that were considered to be under Soviet Union influence after World War II? My answer...is Hungary and Poland. Are these correct? Name two new countries that exist after World War II, but not during World War I? My answer

154. child development

the continues development views hold that

155. History

Personal liberties were among the key ideas of the American Revolution. Given this fact, why did slavery continue after the American Revolution? A. The Southern plantation economy depended on slavery. B. The colonial government encouraged manumission. C.

156. Calculus I

if f(x)=24, find f'(11)? How can i find it?

157. math

The Flying Zucchini Circus Troupe has a human cannon- ball act, shooting a performer from a cannon into a spe- cially padded seat of a turning Ferris wheel. The Ferris wheel has a radius of 40 feet and rotates counterclockwise at one revolution per minute.

158. Chemistry

Name two solutions that can be used to precipitate out the following: PbCl2 Would I just use a random soluble compound and write a total ionic equation

159. Physics

An ocean liner leaves New York City and travels 25.1 degrees north of east for 110km. How far east and how far north has it gone? In other words, what are the magnitudes of the components of the ships displacement vector in the directions, a) due east and

160. calculus very hard help

integrate:cos^10xdx even with the previous hint a tutor here gave me i still don,t know it

161. math

a watch lost two minutes per hour.if on monday 9 A.M the watch was exactly showing 9 A.M.then what is the time on wednesday 9A.M.

162. Math

What expression represents the height of this prism? Volume = 64(c)3(b)8 Base area = 16(ab)3 a) 4a2b3 b) 4a3b3 c) 1024a3b9 d) 1024a4b9

163. Pre-Calc

Solve the following algebraically. log3(x) + log3(x-2) = 1 Are the solutions 3 and -1?

164. math

there is two digit figure in which one digit is exactly half the other. If the position of both fonts or digits is interchanged, the resultant figure when added with the origional figure sum to 99. what is the origional figure?

165. History

I need to write a 1920s letter mentioning the booming economy, new inventions and their jazz lifestyle. The letter has to have 11 slang words.

166. Chemistry

Two electron configuration: Mg(Ne)3s^2 Zn(Ar)4s^2 3d^10 Using the configurations, explain the difference in relative reactivity of the 2 metals ( which are Mg and Zn)

167. media

and again am struggling to elaborate more on ubuntu theory and normative theory as the effect of mass communication.please help

168. maths

A quadrilateral with only two right angles to s it possible

169. Math

number of students in a class = 36 number playing cricket = 16 number playing football = 25 number playing both cricket and football = x write an equation for x how many students play both football and cricket

170. science

how to find a solution with high buffer capacity?

171. english

What is a persuasive writing

172. Math

Order fractions from greatest to least. 1/10, 3/5, 1/4

174. Math

A 20 foot piece of rope will be cut into as many 3 and 1\2 foot section as possible. how much rope will be left over?

175. Math

-4+12 /(-3) 10+3(-2)=

176. Math

Evaluate: -17 + 6 =

177. I have a question[math]

which one is bigger 1/2 3/4 3/5

178. Art

What are the names of Santa's reindeer?

179. Chemistry

Two electron configuration: Mg(Ne)3s^2 Zn(Ar)4s^2 3d^10 Using the configurations, explain the difference in relative reactivity of the 2 metals ( which are Mg and Zn)

180. Algebra

7 – 5(2 – x) = –(x – 8) = 11/6

181. Political Science

You learned about the Democratic Peace Theory. Define this theory. Explain its strengths and weaknesses. Tell how it has been used to inform public policymaking. Now, explain whether you think it should be used in public policymaking, and why in a 250-300

182. Math

I need help please. Draw a quadrilateral that is not a parallelogram.

183. Statistics

a rifleman averages 8 hits out of 10 shots at a tare what is the probability that he will hit the target 3 out of 4 shots 4c3*(.8)*(.2)

5xy4x

185. Chemistry

Two electron configuration: Mg(Ne)3s^2 Zn(Ar)4s^2 3d^10 Using the configurations, explain the difference in relative reactivity of the 2 metals ( which are Mg and Zn)

186. math

Let a be -1/6 and let b be 1/2. Let x be the sum of the reciprocals of a and b, let y be the product of the reciprocals of a and b, and let z be twice the reciprocal of a divided by the reciprocal of b. Calculate x+y+z.

187. Math

The intensity of light passing through a lens can be found using the formula I=Io - Io / csc^2 theta, where Io is the intensity of the light coming in, I is the intensity of the light that emerges or goes out of the lens, and theta is the angle between. a)

188. Math

Mae is making cookies. To make 3 dozen she needs 3 1/4 cups of chips. How many cups of chip will she need to make 5 dozen cookies?

189. Chemistry

What mass of sodium phosphate is needed to produce 75.00 g of solid product?

190. Calculus I

For what values of a and b is the line -4x+y=b tangent to the curve y=ax^3 when x=4? Can anyone give me the hint?