another question: the 20 kg block is at the top of a 10 m long inclined plane. The block starts from rest and slides without friction down the length of the incline. The block is 5 m high. 1) Determine

60,394 results, page 67
1. Geometry

I have a rectangle MNOP ~ rectangle STUV. What is the length of line TU?? First rectangle is MNOP with 10 on top and 4 on the side. Second rectangle is STUV. With the top marked X for the unknown number and n the side is 6. I need help solving this. Do you

asked by R on March 6, 2016
2. Maths

the diagram show a cylinder of mass 8kg lying at rest on two smooth planes inclined at angles 40 degrees and 50 degrees to the horizontal. Calculate the reaction exerted by each plane on the cylinder Thanks in advance

asked by John B on December 2, 2016
3. Polytechnic soko nigeria

A body of weight 500N is liying on a rough plane inclined at angle 25 with the horizontal, it ir supported.by an effort P, parallel to the plane.determine the minimum and maximum value of P, for the equilibriun can exist if the angle of friction is 20

asked by Musty on April 13, 2012
4. Science Physics

A rope exerts a 274N force on an 80kg skier up along a hill inclined 12 degrees. A frictional force of 100N opposed the motion. If the skier starts from rest, what is her speed after travelling 100m?

asked by Yoda on February 17, 2016
5. Polytechnic soko nigeria

A body of weight 500N is liying on a rough plane inclined at angle 25 with the horizontal, it ir supported.by an effort P, parallel to the plane.determine the minimum and maximum value of P, for the equilibriun can exist if the angle of friction is 20

asked by Musty on April 13, 2012
6. Physics

A 2.00kg solid sphere of radius 5.00cm rolls down a 20 degrees inclined plane starting from rest. (a) What is the magnitude of the acceleration of the center of mass of the sphere? (b) How far down the plane does it roll without slipping in 1.00s?

asked by Nick on November 30, 2014
7. Physics

A brick of mass 1.0 kg slides down an ice roof inclined at 30 degrees with respect to the horizantal. If the brick starts from rest, how fast is it moving when it reaches the edge of the roof 0.90s later? Ignore friction

asked by Lisa on October 23, 2010
8. physics

a body of massb20kg slides down a plane inclined at 30degree to the horizontal if a constant resting force of 40N act on the body it acceleration down the plane is what? f=mgsin ma=mg sin 20×a=20×10sin30 20a=100 a=50

asked by favour on November 25, 2016
9. American Lit

What is the significance of the kitchen setting in Langston’s Hughes’ poem “I,Too”? Question 8 options: The kitchen represents images of deep racial injustice in society. Hughes wanted to express the importance of family tradition The kitchen is a

asked by SakiYazzy on March 7, 2016

This is the last question of my quiz, I need help with it. I need just one question answered. Question: The angles opposite the congruent sides of an isosceles triangle are congruent. Find the value of x in the triangle. Show all your work. The triangles'

asked by Lily on February 20, 2016
11. English

Can you please answer my question? I posted the question before.But nobody gave an answer. It is middle of the Jiskha Homework Help Forum page. Where it says: NAME:KHUSHI SUBJECT:INTERESTING FACT AND CHRISTMAS JUST CLICK ON IT, THEN YOU WILL SEE MY

asked by Khushi on December 24, 2006
12. science

What happens when a candle is alight (on one side we had to show physical change and on other side the chemical change). The question sheet says 'Explained both changes using the Big Idea of Energy.' The physical changes are what you can see, and what you

asked by liverpool on October 21, 2006
13. Physics

Problem 1- In one day, a 85 kg mountain climber ascends from the 1440 m level on a vertical cliff to the top at 2360 m . The next day, she descends from the top to the base of the cliff, which is at an elevation of 1310 m . a) What is her gravitational

asked by Anonymous on December 12, 2013
14. Economics

A long-run supply curve is flatter than a short-run supply curve because A. firms can enter and exit a market more easily in the long run than in the short run. B. long-run supply curves are sometimes downward sloping. C. competitive firms have more

asked by Bob on November 29, 2011
15. Math

An architect designs a house that is 12 m wide. The rafters holding up the roof are equal length and meet at an angle of 68°. The rafters extend 0.6 m beyond the supporting wall. How long are the rafters? Hi - I was wondering if you could help me with

asked by Dee on August 21, 2011
16. trigo

a crane at the edge of a dock is supported by a cable 15 meters long, attached to the dock 9 meters long from the base of the crane. if the crane is 6 meters long, what is the acute angle that the crane arm forms with the horizontal?

asked by layton on August 14, 2014
17. MLA Help

Can someone (preferably an english teacher) check my margins? This is the first time I've had to put an essay in true MLA format. He said that he wants the lines double spaced and a margin of 1 inch. However, I don't know whether I'm supposed to put a

asked by Claire on July 13, 2008
18. physics

to find the depth of the water surface in a well, a person drops a stone from the top of the well and simultaneously starts a stopwatch. The watch is stopped when the splash is heard, giving a reading of 3.65 s. The speed of sound is 340 m/s. Find the

asked by raj on September 12, 2012
19. Physics

A 90N dog climbs up a non-uniform (lambda = Cx^(3/2)), 100N ladder. The top of the ladder rests on the top of a frictionless fence that is 3m high and forms a 30 degree angle with the ground, which is rough and has a coefficient of friction of 0.60. How

asked by Min on November 27, 2012
20. physics

Two identical thin wires are oriented along the x and y axes. With current on x plane going North. Current on y plane going West.Both carry the same current I, and there is no electrical contact between the wires. The points A, B, C, D are each equidistant

asked by Melissa on March 16, 2013
21. Physics

Astronauts use a centrifuge to simulate the acceleration of a rocket launch. The centrifuge takes 40.0s to speed up from rest to its top speed of 1 rotation every 1.40s . The astronaut is strapped into a seat 4.50m from the axis. What is the astronaut's

asked by Fred on February 8, 2011
22. Studing for French Final

I have been studing for the past four days except I think I need some better ways to studying for my french final. I am in French 1 and we are doing auditory exams tomorrow and then oral on tues. and the written exam on Wednesday. I have tried not cards

asked by Micheal on December 14, 2008
23. Math

Wile E. Coyote catapults himself off of a 500 ft. cliff with an initial velocity of 20 ft/sec. His height t seconds after catapulting is given by the function h(t) = −16t2 + 20t + 500 . (Note the y-intercept of (0, 500). a. Find his maximum height (Hint:

asked by Irina on September 12, 2014
24. physics

A 2.6 cm thick bar of soap is floating on a water surface so that 2.14 cm of the bar is underwater. Bath oil (of specific gravity 0.8)is poured into the water and floats on top of the water. What is the depth of the oil layer when the top of the soap is

asked by Lines in the Sand122 on November 5, 2008
25. math

King Arthur II has problems with pronouncing the digit 3. People are afraid of presenting something which includes 3 in it. The solution found is that if any number includes 3 as a digit, the number is divided by 2. This process continues as far as the new

asked by ani on April 26, 2015
26. Physics

two students working on physics assignment to find out how far window is from the roof of a building drop a ball over the edge of the roof the ball takes .1 seconds to travel from the top of the window to its bottom of a distance of 1 m assume the

asked by Caroline on October 19, 2015
27. Chemistry

Long question but its my last one for homework and im stuck on this word problem. Biomass is represented by the empirical formula C60H87O23N12P. Write a balance equation for the oxidation of C60H87O23N12P with O2 to form CO2, H2O, HNO3, and H3PO4 beginning

asked by Samantha on May 4, 2014
28. Math

A surveyor standing 56 meters form the base of a building measures the angle to the top of the building and finds it to be 36 degrees. Thesurveyor then measures the angle to the top of the radio tower on the guilding and find that it is 47 degrees. How

asked by Sarah on May 3, 2009
29. English

Look at the pictures. Look at Einstein first. He is a physicist. Let's go counterclockwise. The next person is Namjoon Baek. He is the person on the top of the page. Look at the next person. Go counterclockwise, and you can see a person. He is Winston

asked by rfvv on November 24, 2009
30. spanish

in reference to the last question it has to be a four letter word with the 2nd letter being a (o) I am not sure but otherwise the other question across from it said my stomach after a spaghetti dinner and that is a 5 letter word where it runs into the last

asked by devi on February 24, 2010
31. math help!

bernardo folds the 2 top corners of a rectanglular piece of paper to form 2 conguent triangles and an isosceles trapezoid. The triangles each have an angle that measures 65. what are the measures of the 2 top angles in the trapezoid? a. 25 and 25 because

asked by DeNawQisha on December 8, 2010
32. Physics (Circular Motion!!)

Astronauts use a centrifuge to simulate the acceleration of a rocket launch. The centrifuge takes 30.0 s to speed up from rest to its top speed of 1 rotation every 1.10 s. the astronaut is strapped into a seat 7.40 m from the axis. A) What is the

asked by George on September 2, 2010
33. math-moneyfractions

i have some math questions that i really ,really,need help with asap if any body can explain some of these questions that will be great help.Ok here are 3 of the questions i am about to type now ok the first one says,whole 16 nickels a.circle 3/a of the

asked by chemaya on February 19, 2009
34. English

When previewing the following lines from Sonnet 18, how many sentences should readers plan to read fluently? So long as men can breathe, or eyes can see, So long lives this, and this gives life to thee. A. two B. none C. four D. one

asked by Emi on May 7, 2014
35. geometry

am building a birdhouse. the bottom is 5" wide by 7" long. the sides are 7" long, and cut at a 45 degree angle. I need to find the dimensions of the front and back, which must sit at the diagonal.

asked by Clark on March 30, 2011
36. physics

Two parallel wires carry currents I1=100A and I2 (they run in the same direction). The top wire is held in position; the bottom wire is prevented from moving sideways but can slide up and down without friction. if the wires have a mass of 10g/meter of

asked by lauren on April 24, 2010
37. algebra 2

Use the formula D=rt where D is distance, r is rate, and t is time. 1. Solve D=rt for rate. (1 pt) 40 2. Use the statistics given in Act Two and your equation from #1. a. At what speed (rate) does Rich run the 40-yard dash? (1 pt) b. At what speed (rate)

asked by Belly on October 13, 2017

Complete the given table for the equation 4x+y=9 The following given table is x y -1 13 3 5 2 -3 Roll X is missing two numbers and Roll y is missing three numbers Please someone help. I have been stuck on this question for to long and can not move on to

asked by Felicia on June 30, 2016
39. math

A and B can do a piece of work in 12 days. They started to work together but A left after a few days. If B alone worked for 20 days, the whole work was finished in 24 days. How long would A take to complete the work??? question is really confusing :/

asked by clive on October 22, 2015

HI! I need help with detremining how long my essay should be. It has to be from 4-5 minutes long. Thanks!

asked by Lina on January 5, 2011
41. Spelling

What spelling pattern is in long a and long I words?

asked by Tami on September 8, 2012
42. MATH

A name tag is 6.7 centimeters long. How many meters long is it

asked by jorge on March 6, 2012
43. Macroeconomics

Can someone please explain this question to me? I have tried to pick out the key points but even then I do not know what to look up. Your bank is developing a marketing campaign to appeal to new customers. In a meeting, your manager asked the following

asked by Brenda on March 6, 2010
44. year 8 re-Re teachers

i posted this question before but can`t see it on the page.sorry if it is there. please could someone help me i need to write an essay for re . i don`t really understand what to do. if someone could explain the question id be very grateful.We had a supply

asked by Kerrie on March 16, 2009
45. History

So for my homework question it asks what reference do you see to Native Americans in the Declaration of Independence? I put: "He has excited domestic insurrections amongst us, and has endeavored to bring on the inhabitants of our frontiers, the merciless

asked by Melanie on July 23, 2014
46. physics

i don't understand how to do this question, its a phys 11: "A skier is acc. down a 30.0 degree hill at 3.80m/s^2" a) What is the horiz. comp. of the acc.? b) What is the vert. comp. of the acc.? c) Assuming she starts from rest and acc. uniformly down

asked by Anonymous on January 13, 2008
47. maths-urgently needed

From the top of a tower the angle of depression of an object on the horizontal ground is found to be 60degree. On descending 20 m vertically downwards from the top of the tower, the angle of depression of the object is found to be 30degree Find the height

asked by Anonymous on February 1, 2013
48. Maths B

From the top of height y m the angle of depression of a Channel swimmer at X is 30°. She swims directly towards the base of the cliff such that 1 minute later, at Y, the angle of depression from the top of the cliff to the swimmer is 50°. Given that her

asked by IBM on August 8, 2016
49. Algebra I

A 15 foot flagpole is mounted on top of a school building. If the top of the flagpole forms a 31° angle with the ground 50 ft from the base of the building, about how tall is the school building? 28 feet

asked by Panda on September 10, 2012
50. science

how far will 350 jules raise a block weighing 7n

asked by christian on March 13, 2012
51. FSU

SUBSHELL BLOCK THAT BEGINS TO FILL AFTER 4S2

asked by Martina Azoro on February 4, 2013
52. Pysics

Find the acceleration of the block of mass M = 5.26 kg in the figure below. (Take m = 4.06 kg.)

asked by Quan Jones on September 22, 2011
53. math

How much work is done when a 25 N block of wood is lifted 2.2 meters?

asked by alex on October 14, 2015
54. Chemistry

Thanks Dr.Bob On the periodic table, which block has 5 orbitals? Is it s, p or f? Thanks.

asked by mia on February 21, 2013
55. Physical Science

How far will 490 Joules raise a block weighing 7 N?

asked by Morgan on March 7, 2011
56. parts of speech

How would this sound? Watch for the turn at the corner of the block.

asked by susan on August 3, 2009
57. chemistry

Help!! The S block of the periodic table contains what type of metals?

asked by Sarah on November 25, 2009

How do you count the digits using the base-10 block place value?

make the shape.use your pattern-block template.

asked by Anonymous on October 5, 2008
60. science

a 45 N force acts upon a 8 kg block. what is the blocks acceleration?

asked by rebecca on March 25, 2010
61. wes LA

If a patient is covered by medicaid, what should you put in Block #9a?

asked by Anonymous on July 5, 2010
62. math

draw pattern block with a total of 22 sides

asked by bob on February 14, 2011
63. medical billing and code

If a patient is covered by medicaid, what should you put in Block #9a?

asked by Anonymous on July 5, 2010
64. psych 100

The basic building block of the nervous system is

asked by Anonymous on June 3, 2015
65. science

if i pulled a rectangular block on each of the three sides which would have the most friction

asked by sally on April 9, 2011
66. physic

Find the acceleration of the block of mass M = 5.06 kg in the figure below. (Take m = 4.24 kg.)

asked by joy on February 28, 2018
67. Physics

A force of 10 N pushing down on a 2m^2 block will produce a pressure of?

asked by Irah on October 6, 2014

Which of the following is equal to 1/6÷1/18? Assume the shapes are rectangular. A) The width of a 1/6 square yard tile border that is 1/18 yard long. B) The width of a 1/18 square-meter flower bed that is 1/6 meter long. C) The area of a planter that is

asked by Victoria on December 1, 2014
69. maths

I am sewing a skirt and i need a total of 390cm of different coloured ribbon. The white ribbon needs to be 40cm longer than the red ribbon while the blue ribbon needs to be 3 times as long as the red ribbon. the purple ribbon is half as long as the white

asked by jess on April 27, 2017

The team practices in a pool that is 25 meters long. Sam completes a lap in 22.5 seconds. How long will it take Sam to complete a lap in an Olympic-sized competition pool that is 50 meters long if he swims at the same rate in both pools? (A lap consists of

asked by Anonymous on January 16, 2014
71. math

The team practices in a pool that is 20 meters long. Sam completes a lap in 22.5 seconds. How long will it take Sam to complete a lap in an Olympic-sized competition pool that is 50 meters long if he swims at the same rate in both pools? (A lap consists of

asked by Anonymous on January 16, 2014
72. physiology

Long reflexes regulating GI function differ from short reflexes in which of the following ways? Short reflexes involve the local GI nerve plexus The effectors of short reflexes are GI tract smooth muscle and glands Long reflexes involve autonomic efferent

asked by Anna on April 26, 2010
73. physics

Ok, so I know I already posted another really long question but we have not learned this yet and are expected to do homework on it. Please help me. An ideal monotonic gas is compressed at a constant pressure of 0.9 atm from 14 L to 3.5 L. Note: Atmospheric

asked by anonymous on April 11, 2012
74. English

1. It's been such a long time. 2. It's been a very long time. 3. It's been a while. 4. It's been so long a time. =================== Are they all the same and grammatical? Do you have other similar expressions?

asked by rfvv on September 15, 2015
75. Math help another

Find the area of the composite figure. Square with missing top corner. 12in prarel to 10in top 14in bottom 20in. All of little boxes on the three showm corners. I did this. Find area of rectangle A= lxw 14 x 12 = 168 in. Find triangle area A = 1/2 x b xh

asked by Tamara on April 22, 2013
76. science

A ball is throen vertically downward from the rop of a 36.6 m tall building . The ball passes the top of a window that is 12.2 m above the groung 2.00s after being thrown. What is the speed of the ball as it passes the top of the window? Would i need to

asked by Jen on September 12, 2006
77. Math, Analytic Geometry

Derek wants to determine the height of the top of the backboard on the basketball goal at the playground. He places a standard 12-inch ruler next to the goal post and measures the shadow of the ruler and the backboard. If the ruler has a shadow of 10

asked by Kniasia on March 3, 2015
78. Calculus

An electric elevator cable with a motor at the top has a multistrand cable weighing 4.5lb/ft. When the car is at the first floor, 180ft of cable are pulled out, and effectively 0ft are out when the car is at the top floor. How much work does the motor do

asked by Mason on May 2, 2014
79. Math

Derek wants to determine the height of the top of the backboard on the basketball goal at the playground. He places a standard 12-inch ruler next to the goal post and measures the shadow of the ruler and the backboard. If the ruler has a shadow of 10

asked by Jae on March 30, 2012
80. earth

Some people have proposed building a giant elevator from Earth's surface to geosynchronous orbit. The top of the elevator would then have the same orbital distance and period as any satellite in geosynchronous orbit. Suppose you were to let go of an object

asked by kendra on October 7, 2011
81. Math

Tell whether the pair of polygons is similar. Explain why or why not. The polygon A is bigger. The side of the polygon is 10ft and the top sides of the polygon is 11ft. The polygon B is smaller. The side of the polygon is 8.4ft and the top side of the

asked by Enna on November 9, 2018
82. Chemistry

Consider the following errors that could be made when running TLC. Indicate what should be done to correct the error. a) a two-component mixture containing 1-octene and 1,4-dimethylbenzene gave only one spot with an Rf value of .95. The solvent uses was

asked by Nina on October 9, 2008
83. Chemistry/ OChem

Consider the following errors that could be made when running TLC. Indicate what should be done to correct the error. a) a two-component mixture containing 1-octene and 1,4-dimethylbenzene gave only one spot with an Rf value of .95. The solvent uses was

asked by Neets on October 9, 2008
84. Math

Global Telephone charges 30 dollars for monthly phone service, plus a long distance calling rate of 15 cents per minute. After an hour of long distance calling charges,the rate drops to just 5 cents per minute for additional long distance calls. What will

asked by Kris on August 2, 2011
85. English

Can you please check if the following sentences are possible? Thank you very much. 1) Have you been to/in the new supermarket? No, not yet. 2) I've driven your car twice. Or It's the second time I've driven it. 3) How long ago did you go to Paris? Or When

asked by Franco on October 18, 2010
86. mat115

Please help me with this math question. I am asked to show my work but I don't know how to solve the problem to show my work. The question is: Choose the correct list of factors of the number 8. Again, I have to show my work with this question. Please help

87. physics

a skier decides to ski down a hill inclined at 12 degrees to the horizontal. He pushes on his poles and starts to slide down the slope. If his initial speed after he stops pushing is 4.7 m/s and us= 0.28, how far will mr.grewal slide down the hill before

asked by Tom on April 7, 2015
88. PHY101

A body weighing 3500N is pushed up a rough inclined plane by a force of 5000N. The angle of inclination is 30deg. and the force is applied horizontally. If the coefficient of kinetic friction is 0.5, calculate the acceleration of the body.

asked by Ebieride on May 17, 2016
89. mechanics of machines

A body of weight 500N is lying on a rough plane inclined at angle 3.2 with the horizontal. It is supported by an effort p, parallel to the plane. Determine the minimum and maximum value of P, for which the equilibrium can exist if the angle of friction is

asked by mustapha on April 11, 2012
90. sci275

Provide a brief summary differentiating conservation and preservation. Do you believe that humans can harvest forest resources in an environmentally friendly way? Or, should national forests be left in their natural state in which resources are not used to

asked by christy on March 6, 2010
91. Physics

A youngster shoots a bottle cap up a 15.0° inclined board at 1.92 m/s. The cap slides in a straight line, slowing to 0.95 m/s after traveling some distance. If the coefficient of kinetic friction is 0.35, find that distance. Can someone please show me the

asked by Lindsay on December 5, 2007
92. Chemistry

An unknown element reacts with bromine to give bromide, MBr3. If 2.809g of the unknown element gives 27.765grams of MBr3, what is the element? ( give the symbol ) I don't understand the M in the MBr3...can someoen please help me with this question ASAP

asked by S-rth on September 28, 2011

Using either full block or modified block, draft a letter to Mr. Dittmer to set up the seminar. Your letter must have at least two paragraphs and at least eight complete sentences. Include the following items in your letter: a. Thanks for the company’s

asked by jacqui on April 17, 2011
94. electronics

Using wheatstone bridge where R1=top left R2=top right R3=bottom left RT(thermistor 2.11spec)=bottom right. R1=2.2kohm R3=8.2Kohm. must have 0 output at 0degC calculate the required value of R2. Thermistor specs: resistance @ 20degC=2K 25degC=1.68K

asked by jerome on June 6, 2014
95. Algebra

(x)/(x-3)-4-(2x-5)/(x+2) I posted something before this, so now this is how far I got. The answer I know is -(5x^2-17x-9)/(x-3)(x+2) first I get (x)(x+2)/(x-3)(x+2)- (4)(x-3)(x+2)/(x-3)(x+2)-(2x-5)(x-3)/(x-3)(x+2) Then I get x^2+2x-4x^2-4x-24-2x^2-11x+15

asked by Sara on July 20, 2007
96. Algebra

(x)/(x-3)-4-(2x-5)/(x+2) I posted something before this, so now this is how far I got. The answer I know is -(5x^2-17x-9)/(x-3)(x+2) first I get (x)(x+2)/(x-3)(x+2)- (4)(x-3)(x+2)/(x-3)(x+2)-(2x-5)(x-3)/(x-3)(x+2) Then I get x^2+2x-4x^2-4x-24-2x^2-11x+15

asked by Sara on July 20, 2007
97. DanH-Algebra 1

Solve the system of equations using the Addition method. 2a + 3b = -1 3a + 5b = -2 Margie: Roger's answer below is correct. If you don't understand it, please try and tell us what you don't understand. He makes it sound so strange can you ask him to

asked by Margie on October 14, 2006
98. Math

A particle is projected along an inclined plane with a velocity given by the formula v = 4.4t2 + 10.1t -23.2. Determine the acceleration of the particle when t = 1.5 s. acceleration in m/s2 = My Answer V'=8.8t+10.1 V"=8.8 V"(1.5)= 8.8 acceleration in m/s2

asked by Brownie on January 29, 2013
99. Physics

A child goes down a playground slide with an acceleration of 1.24 m/s^2. Find the coefficient of kinetic friction between the child and the slide if the slide is inclined at an angle of 32.0 degrees below the horizontal.

asked by Abby on February 23, 2010
100. Physics

A child goes down a playground slide that is inclined at an angle of 24.5° below the horizontal. Find the acceleration of the child given that the coefficient of kinetic friction between the child and the slide is 0.305.

asked by Manny on October 6, 2010