Questions Asked onApril 8, 2011

1. English

Combined the sentences by changing the italicized word group to an infinitvie or infinitive phrase (italicized word group) 1. The journalist took a job in the hotel. (This way he would get facts for an article. ) 2. Bob used raspberry flavor in the cod

2. english

I need to combine the following sentence by changing the Italicized group of words into a gerund or gerund phrase. Then write the complete sentence using (prepositional phrase with a gerund object) I watch for the sales. This way I save money.

3. Physics

A boy on a bucycle drags a wagon full of newspapers at 0.80m/s for 30 minutes using a force of 40N. How much work has the boy done?

4. science

Spent steam from an electric generating plant leaves the turbines at 120.0 degrees celsius and is cooled to 90 degrees celsius liquid water by water from a cooling tower in a heat exchanger. How much heat is removed by the cooling towerwater for each kg of

5. math

nick has a revolving store credit card account an annual percentage rate of 15%.last months balance was 423.78.during the current month, he purchase totaling 123.42 and made a payment of 100.the store uses the unpaid balance method.what is the amount of

6. calculus

Starting at point A, a ship sails 57 km on a bearing of 188°, then turns and sails 37 km on a bearing of 330°. Find the distance of the ship from point A.

7. physics

The density of gold is 19.3 x 10^3 kg/m^3. What buoyant force does a .6 kg gold crown experience when it is immersed in water?

8. CALC

An open box is to be constructed so that the length of the base is 4 times larger than the width of the base. If the cost to construct the base is 5 dollars per square foot and the cost to construct the four sides is 3 dollars per square foot, determine

9. math

the width of a basketball court is 1 m more than half the length. If the area of the court is 364 m squared, find the length and width. Sounds easy...but I do not know how to start off the problem.

10. Geometry.

Find the perimeter of a regular hexagon that has an area of 54 radical 3 units squared.

11. Programming Logic and Design

Mr. Roper owns 20 apartment buildings. Each building contains 15 units that he rents for \$800 per month each. Design the application that would print 12 payment coupons for each of the 15 apartments in each of the 20 buildings. Each coupon should contain

Suppose that 90 g of hot water at a temperature of 75 degrees C is poured into a cavity in a very large block of ice at 0 degrees C. (a) What will be the final temperature of the water in the cavity? (b) What mass of ice must melt in order for the water to

13. Chemistry

Calculate the longest wavelength of light that can break a H-O bond. The bond enthalpy of formation is 463 kj/mol

14. Chemistry

Equal volumes of 0.240 M AgNO3 and 0.140 M ZnCl2 solution are mixed. Calculate the quilibrium concentrations of Ag+, and Zn2+.

15. physics

Suppose Fuzzy, a quantum mechanical duck, lives in a world in which h = 2π J.s. Fuzzy has a mass of 2.0 kg and is initially known to be within a region 1.0 m wide. a) What is the minimum uncertainty in his speed? b) Assuming this uncertainty in speed to

16. math

An initial investment of \$1240 is appreciated for 17 years in an account that earns 8% interest, compounded continuously. Find the amount of money in the account at the end of the period.

17. Chemistry

Draw structural formula for each reaction and state the type of reaction that is occuring: a. 4-nonene and fluorine gas b. hexane and oxygen gas c. pentanol and butanoic acid d. propene and hydrogen gas

18. Math

On a certain road 20% of the vehicles are trucks, 16% are buses and the remainder are cars. (i) A random sample of 11 vehicles is taken. Find the probability that fewer than 3 are buses.  (ii) A random sample of 125 vehicles is now taken. Using a

19. English

Select the letter of the choice that correctly identifies the underlined word. The author frequently used co-ordinate clauses to express contrast. (co-ordinate is underlined) A. the prefix should be followed by a hyphen. B. the prefix should not be

20. physices

A pistol that fires a signal flare gives it an initial velocity (muzzle velocity) of 182 m/s at an angle of 60.7above the horizontal. You can ignore air resistance Find the flare's maximum height if it is fired on the level salt flats of Utah. Find the

asked by wala'a sami
21. physics

An accelerating voltage of 2.46 * 10^3 V is applied to an electron gun, producing a beam of electrons originally traveling horizontally north in vacuum toward the center of a viewing screen 34.0 cm away. What is the magnitude of the deflection on the

22. Chemistry 1001

At which pressure would carbon dioxide gas be most soluble? 600torr, 700torr 800torr or 900torr

23. physics

An accelerating voltage of 2.46 * 10^3 V is applied to an electron gun, producing a beam of electrons originally traveling horizontally north in vacuum toward the center of a viewing screen 34.0 cm away. What is the magnitude of the deflection on the

24. Principles of Microeconomics

A firm has fixed costs of \$60 and variable costs as indicated in the table below.

25. statistics

The time that it takes a randomly selected job applicant to perform a certain task has a distribution that can be approximated by a normal distribution with a mean value of 120 sec and a standard deviation of 25 sec. The fastest 10% are to be given

26. physics

In Fig. 12-39, a climber with a weight of 441 N is held by a belay rope connected to her climbing harness and belay device; the force of the rope on her has a line of action through her center of mass. The indicated angles are θ = 45˚ and φ = 25˚. If

A 1.0 kg mass is attached to the end of a vertical ideal spring with a force constant of 400 N/m. The mass is set in simple harmonic motion with an amplitude of 10 cm. What is the speed of the 1.0 kg mass at the equilibrium position?

28. biology

1. Owls sleep during the day and are awake at night because of their kind of estivation habituation* circadian rhythm conditioning 2. When a bird sings to signal others of the same species to keep away, it is showing signs of cheerfulness courtship

29. Finance

A three-year bond has 8.0% coupon rate and face value of \$1000. If the yield to maturity on the bond is 10%, calculate the price of the bond assuming that the bond makes semi-annual coupon interest payments.

30. physices

A physics book slides off a horizontal table top with a speed of 1.30 m/s . It strikes the floor after a time of 0.380s . Ignore air resistance. Find the height of the table top above the floor. Find the horizontal distance from the edge of the table to

asked by wala'a sami
31. physics

the minute hand of a large clock is 2 m long. what is its mean angular speed?

32. Physics

In a thundercloud there may be an electric charge of 18 C near the top of the cloud and −18 C near the bottom of the cloud. If these charges are separated by about 7 km, what is the magnitude of the elec- tric force between these two sets of charges? The

33. Physics Urgent!!!!!

Mars orbits the Sun at a mean distance of 228 million km, in a period of 687 days. The Earth orbits at a mean distance of 149.6 million km in a period of 365.26 days. All answers should be in the range (0, 2pi) a) Suppose Earth and Mars are positioned such

34. maths

1. Farmer Brown has 1200ft of fence to create a rectangular pen. If he would like to separate the pen into 4 areas, what dimensions will maximize and what is the maximum area? (Do not forget units!)

35. English

What are the threats to Romeo and Juliet's happiness? and How many times does the word "night" appear in Romeo and Juliet?

asked by Amber Henricksen
36. Statistics

America Online occasionally conducts online polls in which Internet users can respond to a question. If a graph is constructed to illustrate results from such a poll, and the graph is designed objectively with sound graphing techniques, does the graph

37. physics.....help me please....

1) A 1.0 kg mass is attached to the end of a vertical ideal spring with a force constant of 400 N/m. The mass is set in simple harmonic motion with an amplitude of 10 cm. What is the speed of the 1.0 kg mass at the equilibrium position?

38. Physics

Calculate the net charge on a substance con- sisting of a combination of 3.5 × 1013 protons and 6.3 × 1013 electrons. Answer in units of C.

Mars orbits the Sun at a mean distance of 228 million km, in a period of 687 days. The Earth orbits at a mean distance of 149.6 million km in a period of 365.26 days. All answers should be in the range (0, 2pi) a) Suppose Earth and Mars are positioned such

40. chem

Can someone please help me by explaining and correcting me? 1) A 0.057M solution of a weak acid has a pH of 4.93. Determine the ionization constant, Ka, of the acid. a) 2.1 x 10^-4 b) 2.4 x 10^-9 c) 4.1 x 10^-8 d) 2.8 x 10^-7 e) 1.4 x 10^-10 -- To be

41. Statistics

The production of ages at inauguration of all U.S. Presidents who had professions in the military is 62, 46, 68, 64, 57. Why does it not make sense to construct a histogram for this data set?

42. chemistry

1. An aqueous solution of weak base B of unknown concentration is tritrated with a known concentration of strong acid, HA. (a) Write the balanced chemical equation for this acid-base reaction, identifying the conjugate acid/base pairs. (b) If the

A particle of mass m1, traveling at speed v0, collides head-on with a particle of mass m2 at rest. The collision is perfectly inelastic, i.e., the particles fuse together at the collision. Calculate the fraction of the initial kinetic energy dissipated in

44. math

The decay of 333 mg of a radioactive substance is given by A(t) = 333e-0.024t, where t is time in years. Find the amount left after 17 years.

45. Chemistry

CaCO3 (s) ---> CaO(s) + CO2(g) Calculate the yearly release of CO2 (in kilograms)to the atmosphere if the annual production of CaO is 1.9 x 10^10 kg

46. Algebra

What is yhe name of a prism whose bases are hexagons

47. Pre-Calculus

1) Use a graphing utility to obtain the graph of the function. Give the domain of the function and identify any vertical or horizontal asymptotes. x+4/ x^2+x-6. 2) Use a graphing utility to graph the function and determine the x-intercepts and B. set y=0

48. english

Select the letter that correctly identifies the basic sentence pattern of the sentence. In 281 B.C., King Pyrrhus of Greece offered the Lucanians assistance in their war against the Roman army. A. subject + predicate B. predicate + subject C. subject

49. math

AIDS Cases From 1993 to 2003 the cumulative number N of AIDS cases in thousands can be approximated by N = -2x^2 + 76x + 430, Where x = 0 corresponds to the year 1993. Year 1993 1995 1997 1999 2001 2003 Cases 422 565 677 762 844 930 (c) Rewrite the

50. statistics

Among 17 metal parts produced in a machine shop, 6 are defective. If a random sample of four of these metal parts is selected, find: (a) The probability that this sample will contain at least three defectives. (Do not round the intermediate answers. Round

51. chemistrty

A sample containing 7.20g O2 gas has a volume of 33.0L Pressure and temperature remain constant. What is the volume after 4.00g He is added to the O2 gas already in the container?

52. biochemistry

for each of these qualitative test,barfoed test,benedict test,seliwanoff test,bial test,molisch test,and iodine test, describe the class and give aspecific example of a carbohydrate that would yield a posiyive result?

53. DIT

Given the co-ordinates (x,y) of a center of a circle and it's radius. determine whether a point lies inside the circle or outside the circle? Tell three formlaes which are used in this question?

54. English

Can you please check these sentences, please? Thank you very much! 1) She told me that it was the second time since she hadn't been to the cinema. 2) She asked me how long I had been waiting for her. I think you should try to convince his parents that Bill

55. physics

a 65 kg object is pulled at a constant velocity up an incline w/ a force of 95 N parallel to the incline. Assuming that the difference between the work output and input is work required to overcome friction, what is the force of friction along the incline

56. Statistics

Unauthorized Downloading: A Harris Interactive survey involved 1644 people between the ages of 8 years and 18 years. The accompanying table summarizes the results. Does this table describe a relative frequency distribution? Why or why not? Downloaded

57. English I

Romeo and Juliet In three (or less) paragraphs discuss whether Shakespeare alludes to night in a positive or negative way. Noting as may instances you can d=find where the word night appears then determine whether the word has a positive or negative

58. biomechanics

If a soccor ball with a mass of 0.43 kg is kicked while it is in the air, with a force of 15 N oriented 32 degrees above the horizontal, what is the resultant acceleration?

59. Statistics

When the Indianapolis Colts recently won the Super Bowl, the numbers on the jerseys of the active players were 29, 41, 50, 58, 79,..., 10 (listed in the alphabetical order of the player's names). Does it make sense to calculate the mean of those numbers?

60. geometry

a rhombus has an area of 165 square units. Of the lenght of one of its diagonals is 15 units, find the lenght of its other diagonal I tried DR Russ I didn't come up with answer of 22 units could you give more direction

61. physics

In the parallel circuit, if the current put out by the battery is 3 A and the current through R1 is 1 A, what is the current through R2?

62. Chemistry

Which of the following ions is paramagnetic in the ground state: Na+ Zn+2 Ti+2 Sr+2

63. physics

A Hall-effect probe operates with a 120 -mA current. When the probe is placed in a uniform magnetic field of magnitude 0.0840 T, it produces a Hall voltage of 0.660 µV. The thickness of the probe in the direction of B is 2.00 mm. Find the density of the

64. Physical Science

lead has specific heat of .028kcal/kgC, melting point of 328 degrees C and a heat fusion of 5.5 kcal/kg. how much heat must be provided to melt a 250kg sample of lead with a temperature of 20 degrees Celsius?

65. physics

A 0.210 kg plastic ball moves with a velocity of 0.30 m/s. It collides with a second plastic ball of mass 0.109 kg, which is moving along the same line at a speed of 0.10 m/s. After the collision, both balls continue moving in the same, original direction,

66. Programming

Input a list of positive numbers (terminated by 0) into array, find the largest number in the array, and output the result. Use a subprogram to input the numbers, a function to find the largest, and a subprogram to output the result.

67. physics

an thelet completes one round of circular track of diameter 200m in 40 secomds. wht will be the distance covered t the end of 2min & 20 s.

68. com 155

Underline the Adjectives and Bold the Adverbs in these sentences: 1. The beautiful princess cautiously walked in the forest. 2. The lovely woman lives in a friendly neighborhood. 3. The students show a really wonderful attitude. 4. He spoke sharply,

69. Calculus I

Using Newton's Method, determine the first approximation to the solution of: e^(4x)= 10-2x starting with x=0 what is x1= ??? P.S. ( the 1 is a subscript )

70. accounting

identify whether each descripition best applies to a periodic or a perpetual inventory system

71. chemistry

what is the volume in liters of 4.2 moles methane gas, at 26degree C and 1.40 atm?

72. Physics

I have been given this question and with very little knowledge of physics and a book and flex studies that I am not finding very explanitory. I am not sure I am on the correct path as the vlaues I have seem very large. I would appreciate any

73. english

write the possessive nouns that could replace each group of word below

74. algebra

perform the indicated operations and simplify x-1/x-9-x+1/x+9+x-153/x^2-81

75. physic

Suppose 0.0150 kg of steam (at 100.00°C) is added to 0.150 kg of water (initially at 19.3°C.). The water is inside a copper cup of mass 54.1 g. The cup is inside a perfectly insulated calorimetry container that prevents heat flow with the outside

76. physics

A Hall-effect probe operates with a 120 -mA current. When the probe is placed in a uniform magnetic field of magnitude 0.0840 T, it produces a Hall voltage of 0.660 µV. The thickness of the probe in the direction of B is 2.00 mm. Find the density of the

77. Physics urgent!!!!

Electrons in a beam incident on a crystal at an angle of 30ͦ have kinetic energies ranging from zero to a maximum of 5500 eV. The crystal has a grating space d=0.5 Aͦ, and the reflected electrons are passed through a slit .Find the velocities of the

78. English

1. To show the benefits and shortcomings of different actions, use: A. cause and effect B. order of importance C. spatial order D. comparison and contrast I'm stuck between A and D? 2. To write an article evaluating the various extracurricular activities

During weeks in a certain flu season, the rate at which the number of cases of influenza per 100,000 people in a country changed could be approximated by I'(t)=3.298e^0.1044t where I is the total number of people per 100,000 who have contracted influenza

80. geometry

a flag has dimensons 60cm by 60cm what is the area

81. Organic Chemistry Lab

Hi! For an orgo lab we had to isolate the following from milk powder and now I have to calculate the percentage yield, but first I need the theoretical yield. Can someone help me on the following? I need to know how of each there is in milk and I can do

82. MATH VERY URGENT!!!!!!

1) A ball is hit at an angle of 36 degrees to the horizontal from 14 feet above the ground. If it hits the ground 26 feet away (in horizontal distance), what was the initial velocity? Assume there is no air resistance.

83. math

how do you find the volum of a 6inch by 3 inch cylinder.

84. English

Select the letter of the choice that identifies the underlined compliment 1. The onset of winter gives skiers a wonderful feeling of anticipation. (skiers is underlined) A. direct object B. indirect object C. object complement D. predicate adjective I

85. Chemistry

In a reaction, 34.6 g of chromium(III) oxide reacts with 12.3 g of aluminum to produce chromium and aluminum oxide. If 23.7 g of chromium is produced, what mass of aluminum oxide is produced?

86. Physics

A projectile of mass m is launched from the ground at time t = 0, with speed v0, at angle theta0 above the horizontal. Aerodynamic drag is negligible. Write the kinetic, potential, and total energies of the projectile as explicit functions of time.

87. Geometry

a rhombus has an area of 165 square units. Of the lenght of one of its diagonals is 15 units, find the lenght of its other diagonal

88. Statistics

In an editorial, the Poughkeepsie Journal printed this statement: "The median price--the price exactly in between the highest and lowest--..." Does that statement correctly describe the median? Why or why not?

89. physics

explain why the string stretches while the system is rotating?

90. Life orientation

Provide recommendations on how human problems on the community and name 2institutions or community organisations that are involved in supportingm or giving redress to these disaster

91. English I

Romeo and Juliet In three paragraphs (or less) discuss the threats to Romeo and Juliet's happiness which acts 1 and 2 have introduced.

92. English

I need you to check these sentences for m, please? 1) What's the weather going to be like in Rome tomorrow? 2) It's going to be windy, sunny, foggy,overcast, frosty, rainy,cloudy, misty. stormy. 3) There is going to be thunder and lightning (or they are

93. HELP!!!!

Darnell used one small can of polyurethane to seal a square patch of his hardwood floor. The can advertised coverage of 50 square feet. What is the approximate side length of the square Darnell sealed? a)7 feet b)8 feet c)25 feet d)49 feet

94. Physics

When throwing a ball, a pitcher exerts a torque of 150 N m for 0.15 seconds onto their arm before letting go of the ball. With an arm length of 0.9 m with inertia 0.6 kg m2, what is the speed of the ball just after it is released?

95. Physics

You are riding a bicycle at a speed of 15 m/s. The bycicle has tires with diameters measuring 630 mm. You can approximate each tire as a solid cyllinder (to calculate inertia) with a mass of 0.5 kg. What is the total rotational kinetic energy of the

96. Physics

Electrons in a beam incident on a crystal at an angle of 30ͦ have kinetic energies ranging from zero to a maximum of 5500 eV. The crystal has a grating space d=0.5 Aͦ, and the reflected electrons are passed through a slit .Find the velocities of the

97. psychology

Hello, I am looking for journal articles on spiritual formation and lifespan and can't find any? thanks

98. Economics

Why does the government try to tackle restrictive practices?

99. Maths

in a class the ratio of boys to girls is 3:2, if there are 11 more boys than girls, how many children are in the class

100. chemistry

what is the volume in liters of 4.2 moles methane gas, at 26degree C and 1.40 atm?

101. MATH URGENT!!!!

With the given model: h=-0.045d^2+2d where h is the height of the ball from the ground(in yards) and d is the horizontal distance of the ball(in yards) from its starting point. A.)Pat is standing on the 17-yard line when the football passes over his head.

102. chemistry

In a reaction, 34.6 g of Cr2O3 reacts with 12.3 g of Al to produce cr and Al2O3 If 23.7 g of Cr is produced, what mass of Al2O3 is produced?

103. physices

A man stands on the roof of a building of height 13.8 and throws a rock with a velocity of magnitude 29.3 at an angle of 34.8 above the horizontal. You can ignore air resistance

asked by wala'a sami
104. Statistics

z Score: When Reese Witherspoon won an Oscar as Best Actress for the movie Walk the Line, her age was converted to a z score of -0.61 when included among the ages of all other Oscar-winning Best Actresses at the time of this writing. Was her age above the

105. Algebra II

1) when using cramer's rule to solve the system of equations containing 5x - y = 5 and -3x + y = -9 the denominator for the x and y variables looks like which of these determinants ? a) |5 5 | b) |5 -1 |-3 9| |-3 1| c) |5 -1| |-9 1| d) none of these 2)

106. chemistry

What is the new volume if the volume of a gas is 3.2 L when the temperature is 7 C if the temperature is increased to 15 C without changing the pressure

107. Chemistry

Which of the following atoms or ions has the largest radius: Answer Na+ Mg+2 Mg Na

asked by Mark S.
108. Chemistry

How many grams of Fe2O3 are there in 0.250 mole of Fe2O3?

109. calculus

let x-f(p)=10(16-p) be a demand function find the domain of this function and find where demand is elastic, inelastic, and unit.

110. Logarithms

Solve for x: {{{ln(x)+x=5}}}

111. math 213

Kahlil said that using the equation he can find a similar equation for Examine his argument. If it is correct, supply any missing steps or justifications; if it is incorrect, point out why. = a2 - 2ab + b2 = a2 + 2a1-b2 + 1-b22 1a - b22 = 3a + 1-b242 2ab +

112. biology

Which of these dyes/indicators do not have a sulfur atom in them?

113. Chemistry

How many valence electrons does Mo+3 have?

114. math

3.2m+1.2=4.56 what is m=

115. geometry

How do you find the area of pentagon

116. Math

11. In a survey of 260 dancers, 172 knew the ballroom dances, 145 knew the Latin dances, and 102 knew the swing dances. Of these, 65 knew the ballroom and swing dances, 93 knew the ballroom and Latin dances, and 56 knew the Latin and swing dances.

117. physic

Two cubes with sides of length 121.0 mm fit in a space that is 243.3 mm wide, as shown in the figure. One cube is made of aluminum, and the other is made of brass. What temperature increase is required for the cubes to completely fill the gap? Give answer

118. Social Studies

I'm a left wing: Left Wing: Support(sometimes radical) change; think that the government should provide more social services such as education and health care(therfroe they support higher taxes); believe that the government should be heavily involved in

119. English

Can someone help please: What are 2 events that ended the Progressive era?

120. Pre-Calc

1/x-3 +1 Use a graphing utility to obtain the graph of the function. Give the domain of the function and identify any vertical or horizontal asymptotes.

121. math

what is the simple annual interest of 2% of \$500 after 6 years

122. MAT116

The question is: (using / to symbolize a fraction) x/6-1 less than or equal to 4/5 Fractions throw me off, I need assistance please!

123. algebra

What is the distibutive property to multiply using this equation? 12(u+v)

124. chemistry

Oleum or fuming sulfuric acid available commercially in concentrations ranging from 20 to 99.9% sulfur trioxide. What is the percent by mass of sulfur trioxide (SO3) if oleum is expressed as 3H2SO4 . 5SO3?

125. math

Of 550 students at sam middle school, 30% are in pep club. How many students are not in the club?

126. English

Select the answer that does NOT make the following sentence true. The editing process: A. does not apply the practices of standard English B. follows revision of your draft C. includes the accuracy of grammar, mechanics, and spelling. D. puts the finishing

127. Finance

(Break-even analysis) Acquiring more energy-efficient equipment would cost \$80,000 now and yield savings of \$20,000 in energy costs every year for the next 8 years, after which its salvage value will be 0. The discount rate is 8%. (1) Based on a before-tax

128. calculus

limit of (|x+h|-|x|)/h as h goes to 0 at x=4 why is the answer 1?

129. chemistry

A middle-aged man has been diagnosed as being at high-risk of developing Coronary Artery Disease. * State the chemical composition of the sterol that is present in high levels in most people who belong to the high-risk group. * Distinguish between the

130. math

Jill knows her average score on five tests is 88. She can find all but one test. She has tests with scores of 96,83,100, and 79. What is the missing test?

131. japanese

how do you say congratulations in japanese

132. Life orientation

Ways in which the human problem impacts on the community

133. English

1. I like kimchi mild. (What is the part of speech of 'mild'? Is 'mild' an objective complement?) 2. It touches rough. 3. It feels rough. (Are both the same in meaning?)

134. Math

What is the median: 25, 23, 23, 22, 19, 18, 16, 16, 15, 10, 9?

135. government

Describe a public policy designed to protect the right to privacy over abortion?

136. Math

1.Find the derivative of the function. f(x)=x/(e^x) 2. Find the derivative of the function. f(x)=(e^x+e^(-x))/2

137. Algebra

Name the property shown by the following statement: 9x+0=9x?

138. geometry

the perimeter of a triangle is 48 cm. The length of one side is 7 cm more than the length of the shortest side, and the length of the other side is 5 more than twice the shortest side. Find the shortest side.

139. Math 116

Use all available methods (in particular, the Conjugate Roots Theorm if applicable) to factor the polynomial function completely, making use of the given zero, f(x)=x^4+x^3+4x^2+196x-2205; -7i is a zero.

140. Psychology

Hello, is there journal articles that you know of where you don't have to pay to look up spiritual formation and what theorists believed Piaget, Fowler, and Kohlberg I can't find any and or websites. thanks

141. math

if a feeder gives food at 15o g every hour and it holds 3 kg of food for how many hours will it be activated?

142. physics

A 70 ohm resistor is connected to a 6.7 V battery in the circuit below.When the switch is closed, calculate the current I. Answer in units of A.

143. math

cards have been removed from a wall one at a time down to last two, a queen of spades and a queen of hearts what are odds of picking the queen of hearts

144. bio-chem

C- and K+ channels are open

145. Need Help please

Determine the intervals where the function is increasing and where it is decreasing. f(x)=(ln(x))/x

146. geomerty

What is the value of x. When the angles are 14 and 7

147. math

what is y=xsquared+2x-15 in factored form?

148. algebra2

what are the domain and range of y=8(3)^x

149. math

at noon two planes leave at 3,377mi apart and are coming toward each other at a parallel line if one travels at 610mph and the other 618mph how long will it take to reach each other

150. Math!!!!!!HELP!!! :(

how many kg is there in a gallon?