# Questions Asked onNovember 21, 2014

1. ## MATH ONE QUESTION!!!!!!

The graph shows the number of handbags that Mandy made in one day. What are the variables? Describe how the variables are related at various points on the graph. I will attach the graph in the comments right now:)

2. ## math

The temperature in your house is controlled by a thermostat. The temperatures will vary according to the sinusoidal function:f(x)=6sin(pi/12(x-11)+19, where f(x) represents the temperature in degrees Celsius (°C) and x is hours since midnight. What is the

3. ## solar cells

Imagine that you are in the lab and you can decide the thickness of the Si layer of your solar cell. You want to optimize the solar cell performance for a wavelength of λ=1000nm, for which the absorption coefficient is α(1000nm)=102cm−1. Which of the

4. ## physics

A bowling ball of mass 9 kg hits a wall going 11 m/s and rebounds at a speed of 8 m/s. What was the impulse applied to the bowling ball?

5. ## Math

A group of scientists found a new species of spider in the desert. The body temperature of the spider appears to vary sinusoidal over time. A maximum body temperature of the spider reaches 125? after 15 minutes from the start of the examination. Then, 14

6. ## plz help. math

a caterer is planning a large dinner party for 165 guest. each table must get an equal number of guest, more than 1 guest and fewer than 20. Determine the number of possible table sizes. if the caterers use 11- person tables. how many will they need? there

7. ## math

A ball is thrown vertically upward with an initial velocity of 5 ft/sec from a height of 20 feet. Which function models its motion? i literally am lost and have no idea how to this problem. if i could have help with the steps on how to do the problem and

8. ## English/concrete nouns

Select all of the concrete nouns. iron anger faith toolbox perseverance lamb grace tooth I think it's B,C,E, and G

9. ## Math

The police can determine the speed a car was traveling from the length of the skid marks it leaves. The function they use is S = f(L) = 2sqrt(5L) where S is speed (mph) and L is the length of the skid marks (feet) (a) If skid marks of length 125 feed are

10. ## math

At the amusement park, you decide to ride the Ferris wheel, which has a maxmum height of 80 meters and a diameter of 40 meters. It takes the wheel seven minutes to make one revolution. If you start your ride at the midline and the ferris wheel rotates

11. ## math

At the amusement park, you decide to ride the Ferris wheel, which has a maximum height of 80 meters and a diameter of 40 meters. It takes the wheel seven minutes to make one revolution. Write the sinusoidal function, f(t), that models the height of your

12. ## Physics

Two disks are rotating about the same axis. Disk A has a moment of inertia of 3.1 kg · m2 and an angular velocity of +8.0 rad/s. Disk B is rotating with an angular velocity of -10.2 rad/s. The two disks are then linked together without the aid of any

13. ## Science Help

Which of the following is not a goal of the clean water act? A. Controlling water pollution from point sources B. Encouraging voluntary cooperation by citizens related to nonpoint sources of pollution. C. Educating citizens about the importance of reducing

14. ## mixture problems

A chemist has two solutions of sulfuric acid. One is a 25% solution, and the other is a 50% solution. How many liters of each does the chemist mix to get 10 liters of a 40% solution? 25% solution L: 50% solution L:

15. ## science

A swimming pool measures 10m by 7m by 2m calculate the full force exerted by the water against the bottom. What is the pressure at the bottom due to the water?

16. ## Int.science/Laws of Thermodynamics

The outward evidence for this transformation can be seen only in the mechanical motion of the motor. True False

17. ## Math Help!!!

what is the solution to square root -75 to the nearest integer? 9******* 8 -8 -9

18. ## Physics

Starting from rest, a basketball rolls from the top of a hill to the bottom, reaching a translational speed of 3.83 m/s. Ignore frictional losses. (a) What is the height of the hill? I've tried to use the mgh=1/2mv^2. I think it's because it's

19. ## Math

The product of Greg's age and 5 is 55 Use the variable G to represent Greg's age

20. ## Math

Find all values of c such that 3^(2c+1)=28*(3^c)-9. If you find more than one value of c, then list your values in increaing order, separated by commas.

21. ## Math

Find all real solutions x to (4^x)-(2^x)=56. Please explain in steps! Thank you.

22. ## chem

19. A radioactive nucleus decays to yield a bismuth-211 nucleus and an alpha particle. What was the identity of the original nucleus? Show the nuclear equation that leads you to this answer.

23. ## math help

Factor f(x) into linear factors given that k is a zero of f(x). f(x)=x^3+(12-4i)x^2+(32-48i)x-128i, k=4i In completely factored form, f(x) =____ (factor completely. simplify your answer)

24. ## Science Help

Which of the following statements describes the conservation od a natural resource? A. A factory burns coal to run its machines. B. A solar energy company harvests energy from sunlight. C. Lights in a house are turned off when not in use. D. A wind energy

25. ## algebra

The length of a rectangle is 3 more than twice the width. The area of the rectangle is 119 square inches. What are the dimensions of the rectangle? If x = the width of the rectangle, which of the following equations is used in the process of solving this

26. ## algebra

The stopping distance s of a car varies directly as the square of its speed v. If a car traveling at 30 mph requires 81 ft to stop, find the stopping distance for a car traveling at 55 mph.

27. ## physics

an ice skater applies a horizontal force to a 20 kg block on frictionless, level ice causing the block to accelerate uniformly at 1.4 m/s^2 to the right. after the skater stops pushing the block it slides onto a region of ice that is covered with a thin

28. ## Math

A tightrope walker attaches a cable to the roofs of two adjacent buildings. The cable is 23.5 m long. The angle of inclination of the cable is 13 degrees. The shorter building is 12.0 m high. What is the height of the taller building to the nearest tenth

29. ## physics

a race car starts from rest on a circular track.the car increases its speed at constant rate at as it goes 2.75 times around the track.find the angle that the total acceleration of the car makes with the radius connecting the centre of the track and the

30. ## math

sue buys 8.5 pounds of chicken to make tacos. she uses 0.3 pound of chicken. how many tacos can sue make? how many pounds of chicken are left over?

6. (TCO F) Suppose the December CBOT Treasury bond futures contract has a quoted price of 80-07. What is the implied annual interest rate inherent in the futures contract? Assume this contract is based on a 20-year Treasury bond with semiannual interest

32. ## thermodynamics

The outward evidence for this transformation can be seen only in the mechanical motion of the motor. True False

33. ## Math Help!!!

please check my answers 1. Find the length of the hypotenuse of a right triangle with the legs of 9cm and 12cm A.8 B.21 C.15 *** D.225 2.The length of a hypotenuse of a right triangle is 13cm. The length of one leg is 5cm. Find the length of the other leg.

34. ## Chemistry

when electricity is passed through water, the water decomposes into hydrogen gas and oxygen gas. when 10.00 kg of water were decomposed this way, 5788 l of oxygen gas were produced at 25 degrees celsius and 1 atm pressure. what is the percent yield of

35. ## Math

Sue can either borrow 10,000 dollars for 5 years with a simple interest of 7% annually or an interest which compounds annually for 6%. How much more money, rounded to the nearest dollar, would she have to pay back for the more expensive interest

Suppose c is inversely proportional to the square of d. If c = 4 when d equals 3.find the constant of proportionality and write the formula for c as a function of d c= 36/d^2 use your formula to find c when d is 5. is it 100/d2 or 100/5^2? I know the

37. ## chemistry

If 35.0 mL of 0.210 M HCl reacts with excess Mg, how many mL of hydrogen gas are produced at STP? Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g)

38. ## Geography

How has mexico's culture been shaped by conflict among other people?

39. ## Chemistry

in a particular redox reaction, MnO2 is oxidized to MnO4– and fe3+ is reduced to fe2+. Complete and balance the equation for this reaction in acidic solution. Phases are optional.

40. ## Math Help

You got to go out to eat with your family, and you agree to leave the tip. What is a 15% tip on a \$60.00 bill? A. \$3.00 B. \$6.00 C. \$9.00 D. \$12.00 Is the answer C? Thank you

41. ## Science Help

Which of the following is not a nonrenewable resource? A. Oil B. Petroleum C. Corn D. Gasoline Is the answer A? Thank you

42. ## math

Mandy is enlarging a photo that is 3 in. wide and 4.5 in long. if she wants the width of the enlargement to be 10 in, what will be the length??

43. ## physic

A cannon ball is fired at an angle of 30° above horizontal with an initial speed vi = 55 m/s. Assume the cannon ball leaves the cannon at ground level and ignore air resistance. (a) How long is the cannon ball in the air? (b) How far from the base of the

44. ## AP English Literature: The Odyssey

Hello. I am in need of some help with these following questions about The Odyssey: 1. When Odysseus finally lands upon the island of the Phaiacians, what happens which leads him to come out of disguise and reveal his true identity? A. Athena vows to

45. ## science

which of the following shows the path followed by nerve impulses in a reflex motor neurons,interneurons in brain,sensory neurons or sensory neurons,interneurons in brain, motor neurons

46. ## Physics

A clock has a second hand whose tip rubs against the inside of the glass cover. If the frictional force between the glass cover and the tip of the second hand is 0.0020 N and the length of the hand is 9.5 cm, what is the minimum torque that must be applied

47. ## MAth Help

The function f(t)=22sin(piT/3 -5)+80 is used to represent the changes in temperature of a chemical compound used in a lab. What is the vertical shift? I got the answer of 6. Is this correct?

48. ## Algebra

What is the range of the function f(x)=3-2*51^x? Give your answer as an interval.

49. ## Math

Suppose 81^x=64. What is 27^(x+1)?

50. ## Int.science

When a motor is turned on, electrical energy is transformed to mechanical energy plus heat energy. True False

51. ## Algebra

At the beginning of each year, Joe invests \$10,000 in his retirement fund. The fund gives 10% interestm compouned annually. At the end of the third year, how much money will be in Joe's fund?

52. ## Spanish

in spanish Tell 3 things you do in the morning using reflexive verbs

53. ## physics

The position versus time for a certain object moving along the x-axis is shown. The object’s initial position is −2 m. Find the instantaneous velocity at 6 s. Answer in units of m/s

54. ## Living a Healthy Life

In America, _______ million children live in poverty. A. 37 B. 14 C. 7 D. 25 B.

55. ## Math Help!!!

In this unit, you learned about different types of numbers that make up real numbers. Note the different types of numbers and provide two examples of each. Which of the number types is easiest for you to identify? Why?

56. ## Chemistry

Balance the following equation in basic conditions CoCl2 (s) +Na2O2 (ag) ----> Co(OH)3 (ag)+Cl- (ag) + Na+ (ag)

57. ## physics

A 5 ft chain is sitting on a table with 2 ft hanging off (3 ft sitting on table). The table is 4 ft high, and the chain slides frictionless off the table. The chain weighs 15 lb. What is the velocity of the chain when it first hits the ground.

58. ## Ratio - proportion - unit rate

1 quart = 4 cups each person will drink 2 cups. Unit price \$5.99 per 1 quart box We have 24 guests what is the answer?

59. ## Math

Joanie takes a \$6,000 loan to pay for her car. The annual interest reate on the loan is 12%. She makes no payments for 4 years, but has to pay back all the money she owes at the end of 4 years. How much more money will she owe if the interest compounds

60. ## chemistry

a mixture of 39.8g containing potassium chloride and potassium trioxochlorate (v) upon heating, the residue weighed 28.7g what is the percentage mass of potassium chloride in the residue?

61. ## DON VASCO PATNA

A salt solution of 15 litres contains 20% salt.How much water must you add to salt solution in order to dilute it 15% salt?

62. ## math (fractions)

a _____________ has a whole number and a part.

63. ## Physics

A volleyball court is 18 m long from baseline to baseline and the net is 2.24 m high. A volleyball player serves the ball from the baseline by hitting it at a height of 2 m above the floor at an angle of 10 degrees above the horizontal. A.) If the ball is

64. ## math

A boat travels 23 mph relative to the riverbank while going downstream and only 11 mph returning upstream. What is the boat's speed in still water?

65. ## MATH

Kyle is making a model of an Egyptian pyramid for his history class. Each side of the pyramid he makes has a base of 18.6 cm and height 14.8 cm. Calculate the height of Kyle's pyramid to the nearest tenth of a centimeter. Don't I need an angle to calculate

66. ## Math

Esmeralda said 4/3 is greater than 7/2 is she right explain your answer.

67. ## math

A plane makes an 900-mile flight in 3 1/3 hours against a strong head wind, but returns in 50 minutes less with the wind. What is the plane's speed without the wind?

68. ## math

A manufacturer of lapel buttons test marketed a new item at a university. It was found that 1,000 items could be sold if they were priced at \$4, but only 600 items could be sold if the price were raised to \$8. On the other hand, the manufacturer finds that

69. ## college algebra

An investment initially worth \$5300 earns 7.7% annual interest, and an investment initially worth \$8000 earns 5.6% annual interest, both compounded annually. How long will it take for the smaller investment to catch up with the larger one?

70. ## Math

f(x) = 3x^2 , g(x) = 3x-1, and m(x) = 4x Find and simplify the composition function g(m(f(x))) answers i got which were wrong 3x-1(12x^3) 36x^4-12x^3 Maybe i am putting the information in incorrectly.. Should it look like this (3x^2(4x(3x^2))) then solve?

71. ## science

i have BaCl2.2H2O ,how can i get BaCl2.6H2O from it. or i have CuCl2.2H2O how can i get CuCl2.6H2O from it. actually i am working in the field of nanotechnology. trying to prepare nano-ferrites. now am trying to prepare copper doped barium

72. ## physics

A car of mass 200g moving at 15.0m/s is accelerated to 25.0m/s in a time of 10.0 seconds determine the accelerating force and calculate the work done on the body

73. ## Math

use truth table to verify: 1.Distributive law P conjunction ( q disjunction r )= ( p conjunction q ) disjunction ( p conjunction r) 2.Associative law ( p disjunction q) disjunction r = p disjunction ( p disjunction r ) ( p conjunction q) conjunction r= p

74. ## MATH

2 A B + A B 1

75. ## physics

A launching mechanism consists of an arm (uniform rod with mass 250. g and length 75.0 cm) with a holder (negligible mass) at one end mounted to a hub of radius 3.00 cm and negligible mass at the other end. A string is wrapped around the hub and passes to

8A5 +

77. ## math

8 A 5 + 9 4 A

78. ## Question

What can be in a Manipulative &Math Center

79. ## MATH

2 A B + A B 1

80. ## math

8 A 5 + 9 4 A

81. ## dr.virendra swarup educationcentre

Construct a triangle ABC such that BC=5.2 cm , AB=4.8cm and median CM= 3.6cm

82. ## physics

A particle of mass and initial velocity strikes a stationary particle of mass . The collision is elastic. It is observed that after the collision the particles have equal and opposite velocities: Find (a) the ratio ; (b) the velocity of the CM (before and

83. ## physics

If the athlete lies down on the ground on his back,his weight is spread over an area of 0.75 meter square. How much pressure does he exert on the ground in this position?

12x^2-2x-2=0

85. ## CIS

Create three arrays of type double. Do a compile-time initialization and place different values in two of the arrays. Write a program to store the product of the two arrays in the third array. Write a method to display the contents of all three arrays

86. ## s.s

how did the patriots change the outcome of the war

89. ## Math Help

Estimate 78% of 20. A. 14 B. 16 C. 19 D. 2 Is the answer B? Thank you

90. ## math

write the folowing in ascending order:2/3, 1/2, 4/5, 7/20

91. ## MATH

Find the formulas for the functions f(g(x)) and g(f(x))when f(x) = 2/x and g(x) = 2x^2-1 f(g(x)) = ? g(f(x)) = ? for f(g(x)) would it be 2/x(2x^2-1) or g(f(x)) 2x^2(2/x)-1? Would i solve like this? also when I tried to input the answer after solving didn't

92. ## Physics

2 vectors have same magnitude.The magnitude of the resultant vector of these 2 vectors are same as either of both vectors.What is the angle between 2 vectors?

93. ## Math Help!!!

define each term and give at least 2 examples of each whole numbers natural numbers integers rational numbers irrational numbers

94. ## Physics

An airplane flies at a constant speed in a straight line. A bale of hay is dropped from the bottom of the plane to some cattle in a snowstorm. When the bale hits the ground, where is the plane? (Ignore air resistance) Explain your answer!

95. ## Science

2 vectors have same magnitude.The magnitude of the resultant vectors is same as either of both vectors.What is the angle between 2 vectors?

96. ## Science- Skin

How thick is the epidermis as compared to the dermis as compared to the subcutaneous layer? Is there a comparison? If not, then how thick is the epidermis, dermis, and subcutaneous in thick skin?

97. ## Earth Science - NEED HELP QUICK

What is the thickness of the layer from 1000 - 850 mb if the mean temperature of the layer is 2 C? From what it says in my textbook it seems as if mb = hPa so all you do is 850 - 1000 = -150 hPa but I am pretty sure that is wrong because what do you do

98. ## Science Help

Selectively cutting down trees on an area of land can best be describes as A. Cutting down certain trees while leaving other trees standing. B. Cutting down all of the trees and smaller plants. C. Cutting down none of the trees on the land. D. Cutting down

99. ## Int.science/Laws of Thermodynamics

The efficiency of the engines in the two previous problems are the same, comparing the input and output temperatures. True False

100. ## Physics

A marble rolls down an incline of 30 degrees. If the marble is initally at rest at the top of the incline of length 2.0 meters what will the speed of the marble be at the bottom of the incline (a) if the incline is rough enough to prevent any slipping [ it

101. ## Living a Healthy Life

Refrigerated foods should be stored at _______ degrees Fahrenheit or lower. A. 45 B. 35 C. 55 D. 31 B.

102. ## Physics

A wheel starts from rest and rotates about its axis with constant angular acceleration. After 8.7s have elapsed, it has rotated through an angle of 20 radians. What is the angular acceleration of the wheel? What is the angular velocity when the time t =

103. ## Science Help

Using coal for fuel releases pollution into the atmosphere. Why do people continue to use coal if it causes pollution? A. Using more coal reduces the amount of pollution from using oil. B. Using coal is realtivly inexpensive. C. Mining coal helps

104. ## Living a Healthy Life

Blood pressure is a measure of A. oxygen levels in the blood. B. the ratio of red blood cells to white blood cells. C. how hard the heart is working. D. the pressure exerted by hemoglobin against the vascular walls. D.

105. ## Math

What is the degree measure of the angle through which the hour hand on a clock rotates from 4:00 pm to 8:00 pm?

106. ## algebra

Solve this quadratic equation x^2 + 5x + 3 = 0

107. ## Algebra 2

Solving Quadratic Systems x^2+y^2=10 2x+y=4 Please show work I need to know how to do it

108. ## Physics

A distant planet has a mass of 0.6400 ME and a radius of 0.9000 RE. What is the ratio of the escape speed from this planet to the escape speed from the earth?

109. ## Math

h(x)= 3x+2/7x-6 find the inverse of h^-1(x) h^-1(x) = ? Would I solve it like this h(x)= 3x+2/7x-6 7xy-6y=3x+2 (bring 7x-6 to other side) i got confused here. Would i try to bring the 6y over to the right and then the 3x+2 to the left to get Y by itself.

110. ## physics

A dog sled team is pulling a sled across a flat patch of snow. The total force exerted by the four dogs is 475 N (applied horizontally). The sled (with driver on it) weighs 350 kg. and the coefficient of kinetic friction between the sled and the ground is

111. ## Science Help

The process of desertification can occur when A. Plants usually found in the desert replace trees that have been cut down. B. Farmers use contour farming techniques. C. An area of forest is clear-cut. D. An area of forest is selectively cut. Is the answer

112. ## math

terrence's brother decided to share some pizza with terrence and his sister. if terrence ate 1/4 of the pizza, his brother ate 3/16 of the pizza, and altogether the three ate 5/8 of the pizza, how much did the sister eat?

114. ## s.s

describe the conditions that the soldiers faced in valley forge in the winter of 1777-78. Why do you feel that soldiers remained in valley forge despite the conditions?

what is ip?

116. ## Science Help

Renewable resources are considerered better for the enviorment because A. They are less expensive to harness. B. Once they are harnessed, they can be replaced. C. They do not cause any pollution. D. Using renewable resources encourages people to plant more

117. ## Living a Healthy Life

Blood pressure is a measure of A. oxygen levels in the blood. B. the ratio of red blood cells to white blood cells. C. how hard the heart is working. D. the pressure exerted by hemoglobin against the vascular walls. D.

118. ## English

how to write a conclusion for Tochi's essay?

119. ## algerbra

A triangle has sides of and 3. Which could not be the length of the third side if it is a right triangle? i need help anyone?

120. ## math

Which point represents a number that makes this statement true? 64.8 < < 65. 4 assessment graphic

121. ## math

At the amusement park, you decide to ride the Ferris wheel, which has a maximum height of 50 meters and a diameter of 35 meters. It takes the wheel three minutes to make one revolution. If you start your ride at the midline and the ferris wheel rotates

122. ## Algebra 2

More About Complex Numbers squ. root 5+i/squ. root 5-i I don't know if you understand this equation, but could you help me.

123. ## science

4 answers energy flow in ecosystem?

124. ## math

Which is an example of an algebraic expression? A. 2k + 25 B. z – 8 = 44 C. 3 + 7 = 10 D. 76 – 10

125. ## Math

Pierre is pouring concrete to create the foundation of a square deck covering 112 square feet. Which is the best estimate of one side of the deck? Round to the nearest tenth, if necessary. 10 ft 10.3 ft 10.6 ft 11 ft I'm going with 10.6. Am I correct?

Factor f(x) into linear factors given that k is a zero of f(x). f(x)=x^3+(12-4i)x^2+(32-48i)x-128i, k=4i In completely factored form, f(x) =____ (factor completely. simplify your answer)

127. ## Quantitative Methods

7) President’s job approval rating is frequently reported in news programs. You will hear statements such as: “Among likely voters, the President’s job approval rating is 46% with a margin of error of 6%.” a) What percent confidence interval do you

128. ## science

As an object get farther from earth is A. its weight increase B.it weight decrease C. it mass decrease D. it weight remains the same I am not sure but is it A(or b)

129. ## algebra

Which of the following points lies on the circle whose center is at the origin and whose radius is 10 (-6,4) (/10,/10) (6,-8)

130. ## Math

What is the vertex of y=7(x+5)^2+4?

I already posted this question,and Henrey answered it. I just wanted to clarify a few things to make sure I am on the right track Problem: Joanie takes a \$6,000 loan to pay for her car. The annual interest reate on the loan is 12%. She makes no payments

132. ## Physics

A 30-caliber rifle with a mass of 3.54 kg fires a 7.33- g bullet with a speed of 596 m/s with respect to the ground. What kinetic energy is released by the explosion of the gunpowder that fires the bullet? (Note there is a tolerance 0.1 percent for the

133. ## Physics

A wheel starts from rest and rotates about its axis with constant angular acceleration. After 8.7 s have elapsed, it has rotated through an angle of 20 radians. I found that the angular velocity at 8.7 s is 4.60 rad/s. What is the angular acceleration of

134. ## Math

The function f(x)=ax^2 satisfies f(2)=1 and f(32)=4. Find r.

135. ## Math

A savings account at Xyz bank offers 4% interest, compounded annually. How much money must I invest today in order for the account to grow to \$5,000 in ten years? Answer to the nearest whole dollar.

136. ## Physics

A 24.5-kg child is standing on the outer edge of a merry-go-round which has moment of inertia 989 kg • m2 and radius 2.40 m. The entire system is initially rotating at 0.180 rev/s. Find the angular velocity if the child moves to a final position 1.10 m

138. ## science

an object's resistance to change in motion is called is A. Density B. Inertia C. Mass D. Degrees

139. ## Math

multiply -p(p+q+2)

140. ## math

multiply (-5-p)(5+p)

141. ## Precalc

Two lookout towers are situated on mountain tops A and B, 4 mi from each other. A helicopter firefighting team is located in a valley at point C, 3 mi from A and 2 mi from B. Using the line between A and B as a reference, a lookout spots a fire at an angle

142. ## math

(-q^2 +3)(q^2 -2)mulitply

143. ## physics

A cannonball is fired with a velocity of 551 m/s. If the cannon is aimed 12° above the ground, how far away does the cannonball land? Ignore air resistance and use 9.8 m/s2 for acceleration due to gravity.

144. ## Math

h(x) = log (6x+5/7x-4) Find a formula for the inverse function h^-1(x) h^-1(x) = My work so far h(x) = log(6x+5/7x-4) y=log(6x+5/7x-4) x=log(6y+5/7y-4) 7xy-4x= log(6y+5) how would I solve from here. Would I solve for y then do the natural log of both sides

145. ## ET1210-Dc/Ac Circuits

if a certain number of equal resistors are wired in series across a certain voltage source, determine how much voltage is across each resistors.

146. ## ET1210- Dc/Ac Circuits

When you know the wattage and applied voltage of a light bulb, determine its resistance

147. ## physics

A 30-caliber rifle with a mass of 2.80 kg fires a 9.84- g bullet with a speed of 726 m/s with respect to the ground. What kinetic energy is released by the explosion of the gunpowder that fires the bullet?

148. ## math

express 4(5x+3)/25x^2-9

149. ## Math

f(x) = 6 / 5+x g(x) = f(f(x)) find a formula in terms of x ,for g^-1(x)

150. ## Living a Healthy Life

A child who has to struggle to climb into a chair is confronting a(n) _______ hazard. A. environmental B. biological C. physical D. ergonomic C.

151. ## Math Question

If the angle -1500o is in standard position, state the quadrant in which it's terminal side lies.

152. ## Math Help!!!

. note: remember to show all of the steps that you used to solve the problem. at a halftime show, a marching band marched in formation. the lead drummer started at a point with coordinates (-2,-5) and moved 3 steps up and 1 step right. a. write a rule to

153. ## Algebra

y=25x+500 solve for x solve for y

154. ## Living a Healthy Life

Which type diapers meet the American Health Association's standards? A. Paper diapers with absorbent gelling materials B. Cotton diapers C. Diapers composed entirely of paper composite D. Recycled diapers A.

155. ## mixture problems

How many gallons of 45% butterfat cream must be mixed with 500 gallons of 3% butterfat milk to obtain a 5% butterfat milk?

156. ## Living a Healthy Life

At what age does exercise begin to result in strength in boys and girls? A. Between ages five and six B. Between ages six and seven C. Between ages three and four D. Between ages one and two B.

157. ## physics

A clock has a second hand whose tip rubs against the inside of the glass cover. If the frictional force between the glass cover and the tip of the second hand is 0.0010 N and the length of the hand is 6.5 cm, what is the minimum torque that must be applied

158. ## Living a Healthy Life

Which of thefollowing is a suitable toy for a toddler? A. A walker B. A trampoline C. A riding toy D. Powdered clay C.

159. ## Chemistry

A sample of sodium sulfate, Li2SO4, contains 6.78 x 10^23 formula units. How many moles of Li2SO4 are there in the sample? How many moles of Li+ ions are there in the sample?

160. ## Question

What are Behavioral Objective for a Hopscotch

161. ## Chemistry

A sample of toluene, C7H8 has a mass of 74.5 g. How many moles of benzene does it contain? How many molecules does the sample contain? How many carbon atoms does it contain?

162. ## Physics

An iron disk has a radius of 0.625 m and a mass of 217 kg. The disk is mounted on its axis so that it is free to spin. How much force is required if the force is applied at a distance 19.5 cm from the axis of rotation?

A thermostat is a device used to adjust the temperature indoors. Which of the following explanations best interprets the author's intended meaning in the bolded words in following sentence? "The Church was a thermostat that transformed the mores of

164. ## Living a Healthy Life

Some child psychologists have concluded that _______ is the strongest predictor of both scholastic and career achievement. A. respect for authority B. inherited intelligence C. emotional well-being D. physical illness C.

165. ## Physics

1. Determine the specific heat of a certain metal if a 450-g sample of it loses 34,500 joules of heat as its temperature drops by 97degC. 2. The temperature of a 55-g sample of a certain metal drops by 113degC as it losses 3,500 J of heat. What is the

166. ## Physics

1. A student lifts his 2.0-kg pet rock 2.8m straight up. He then lets it drop to the ground. Use the Law of Conservation of Energy to calculate how fast the rock will be moving ..... a. half way down b. just before it hits the ground 2. A 65-kg girl is

167. ## Chemistry

A 3.78 g sample of ethanol (C2H5OH) was burned completely in a bomb calorimeter. The temperature of the calorimeter plus the contents increased from 25.6oC to 35.2oC. Knowing that ethanol's heat of combustion is -3600 kJ/mol, calculate the total heat

168. ## Physics

Two workers are sliding 310kg crate across the floor. One worker pushes forward on the crate with a force of 440N while the other pulls in the same direction with a force of 230N using a rope connected to the crate. Both forces are horizontal, and the

9i / -3+8i

170. ## Physics

A wheel starts from rest and rotates about its axis with constant angular acceleration. After 8.7s have elapsed, it has rotated through an angle of 20 radians. What is the angular acceleration of the wheel? What is the angular velocity when the time t =

171. ## Algebra II

I have some questions regarding syntheetic division. f(x) = x3 - 9x + 3

172. ## math

p= x^2-25x+5000

173. ## Math

Beginning January 1, Community Hospital had 175 inpatient beds. On June 15, the bed count was increased to 200. The hospital provided 67,106 service days to inpatients and 68,012 service days to discharged patients. In addition, there were 9,601 admissions

174. ## algebra 2

Simplify. 1.) 2•√25/26 2.) √a^2/b^5 3.) √a/b √a^2/b^2