1. physics

    A block of mass m = 7.0 kg is dropped from a height H = 46.0 cm onto a spring of spring constant k = 2360 N/m (see the figure). Find the maximum distance the spring is compressed.

    asked by Anonymous on April 21, 2013
  2. math GR.8!!!

    A cylinder has two circular ends, each with an area of 1256 c,. The height if the cylinder us 60 cm. what is the surface are of the cylinder? plz explain the formula and all the steps towards how u got the answer... thank u!!!

    asked by .Ms.Sue!!!! plz help on December 10, 2013
  3. Math

    Helen stands 66 m away from the base of the tree. If the line of sight makes an angle of 30 with the top of the tree with respect to the horizon. What is the height (h) of the tree?

    asked by Valentine on March 15, 2011
  4. HELP! URGENT! (geometry)

    Helen stands 66 m away from the base of the tree. If the line of sight makes an angle of 30 with the top of the tree with respect to the horizon. What is the height (h) of the tree?

    asked by Valentine on March 15, 2011
  5. physics

    a soccer player kicks the ball of mass 0.4kg.the ball moves off at a speed of 4m/s. calculate the maximum height the ball could reach

    asked by marta on April 6, 2015
  6. Maths nd science

    A ball is thrown vertically upwards.It takes 4 s for the ball to return to the thrower's hand now what is thb maximum height reached by the ball.

    asked by Felicia on January 17, 2013
  7. Math

    Fill in missing values for a rectangular prism? Length is 8. Width is missing. Height is 14. Surface area is missing. Volume is 324.8

    asked by Liza on February 2, 2017
  8. math

    Write an expression for the volume of a rectangular prism if the length is 5 feet shorter than some x amount, the width is 3 feet longer than x, and the height is x feet.

    asked by josh on March 1, 2012
  9. physics grade 10 icse

    two balls of masses in ratio 1:2 are dropped from the same height find : a. the ratio between their velocities when they strike the ground and b. the ratio of the forces acting on them during motion

    asked by Annie on April 13, 2014
  10. Algebra

    Of the following variables, which would NOT exhibit normal distributions? I: Height, Weight II: Test Scores III: Flipping a coin Select one: a. I Only b. III Only c. I and II d. I, II, and III

    asked by Anonymous on February 22, 2019
  11. Math

    Jordan and Missy are standing together in the schoolyard. Jordan, who is 6 feet tall, casts a shadow that is 54inches long. At the same time, Missy casts a shadow that is 45 inches long. How tall is Missy?

    asked by Angie on March 28, 2009
  12. Math 4th grade

    How can you find the problem solve for this one.. I did in my own way.. I found that answer was not same as what I had... it is 486lbs...Need your help so I can explain to my students. Thanks here is the question: The food stand at the zoo sold 2,514

    asked by Mrs. Ramirez on September 14, 2016
  13. Statistics

    An IQ test is designed so that the mean is 100 and the standard deviation is 19 for the population of normal adults. Find the sample size necessary to estimate the mean IQ score of statistics students such that it can be said with 95% confidence that the

    asked by Stephanie on February 12, 2014
  14. Ms. Sue

    I am accusing fake ms. sue's (AROUND THE GLOBE) for unhelpful answers for over 1,000 questions asked. This is very unusual for Ms. Sue for being in all of these posts. Now I may ask, who kept giving unhelpful questions? If the real Ms. Sue is here thanks

    asked by OBJECTION on January 30, 2019
  15. Math

    Diegos class planning a field tripfor 25 students.They will go to aquarioum and then to science museum. Each ticket for science cost $2 more than each ticket to aquarium. Lunch for each student is $5 additional. Write and expression for total cost of

    asked by Darryl on September 10, 2017
  16. math

    The average raindrop has a diameter of 2.55mm. Columbus, OH has an average rainfall of 38.52 inches per year. You know how to find the volume of a sphere and diameter and volume= L*W*H and that 1 meter = 39.37 in. Leap year = 366 days/year. How many rain

    asked by Rebecca on August 31, 2012
  17. Spanish

    How do you say "The students are impatient" in Spanish? El estudiante are impaciente Los estudiante Es impacientes Los estudiantes son impacientes*** La estudiante Es impacientes.

    asked by Kaai97 on January 16, 2016
  18. venn diagram

    IN A CLASS OF 130 STUDENTS.85 PASSED IN MATHS, 60 PASSED IN SCIENCE, 10 FAILED IN BOTH. a) how many passed in science but failed in math b)how many failed in exactly one subject

    asked by Navami on June 21, 2014
  19. Algebra

    A square and an equilateral triangle have the same perimeter.Each side of the triangle is 5 inches longer than each side of the square. What is the perimeter of the square.

    asked by Maurice on October 3, 2016
  20. English

    Works needed for assignment: "Students" by Tom Wayman and "Crow Lake" by Mary Lawson. I am trying to properly state my thesis but cant word it properly. "Both pieces originate from the same lack of motivation that leads to conflict, but the views and

    asked by Winnie on May 26, 2015
  21. Physics

    Two students each hit a golf ball at the same speed, but the first student hits his ball at an angle of 60.34o with the horizontal, and the second student hits his at (30-0.34)o with the horizontal. Which ball goes further? Which one hits the ground first?

    asked by Supansa on February 20, 2016
  22. Math

    Instructions Suppose we have a sequence (1), (2, 3), (4, 5, 6). (7, 8, 9, 10), (11, 12, 13, 14, 15), ... where (1) is the first element of the sequence, (2, 3) is the second, etc. What is the first number in the 100th element of the sequence? Be sure to do

    asked by Stinkrat on February 9, 2013
  23. math

    1)The area A of a triangle varies jointly as the lengths of its base b and height h. If A is 75 when b=15 and h=10,find A when b=8 and h=6 2)Determine the equation of any vertical asymtotes of the graph of f(x)=2x+3/x^2+2x-3 1) Area of a triangle is 1/2

    asked by Marissa on August 21, 2007
  24. math repost Please Help!

    Hello, In a class of 24 students, every student flips fairly two coins 40 times each and records the results. Assume that the class obtained the expected results when they conducted the experiment. a. Make a bar graph illustrating the combined class

    asked by joe on February 7, 2010
  25. math

    •You and three (3) of your friends were in the same advance placement high school chemistry class in high school. All four (4) of you decided to take the same chemistry class together at the local university along with 21 other students. On the first

    asked by jacque on December 4, 2012
  26. calc 1

    If a ball is thrown in the air with a velocity 50 ft/s, its height in feet t seconds later is given by y = 50t − 16t^2. (a) Find the average velocity for the time period beginning when t = 2 and lasting 0.5 second 0.1 second 0.05 second 0.01 second i

    asked by feather on January 27, 2016
  27. maths

    I don't know how to solve this question.urgent A one side open cylindrical drum has inner radius 28cm.and height 2.1m.How much water you can store in the drum.Express in litres.(1 litre=1000cc.)

    asked by devi on March 21, 2015
  28. chemistry

    please help Calculate the volume in mm3 of a slice of potato if it is cut into the shape of a rectangular prism (volume = length x width x height), which is 2.24 cm long, 0.84cm wide and 2.88cm high

    asked by linda on April 4, 2012
  29. physics

    A parachustist jumps from an airplane and freely falls y=51.8 m before opening his parachute. Thereafter, he decelerates at a=1.86 m/s^2. As he reaches the ground, his speed is 3.04 m/s. a)How long was the parachutist in the air? b)At what height did the

    asked by Anonymous on September 19, 2009
  30. Math

    A weight lifter is raising a barbell of mass 120kg. He does this in two stages. At the end of the first stage he holds the barbell steady at shoulder height. What upward force is each arm exerting?

    asked by Hussain on October 25, 2013
  31. physics

    a projectile has a maximum range R=150m.find its initial velocity and the corresponding maximum height it reaches. at what angle should it be aimed to hit a target at the same level that is located at a distance x=100m from it?

    asked by ali on November 30, 2014
  32. Physics

    A stone is thrown upwards from the roof with a velocity 15ms^-1 at an angle 30degree to the horizontal. The height of the building is 40m.calculate the magnitude of the velocity of the stones before it strikes the ground

    asked by Lynn on July 4, 2015
  33. Physics

    A 10 N toy rocket is fired straight up [KE= 40 J]. At the very top of its trip, the total mechanical energy= 140 J. What was the final maximum height reached? When I tried to solve the problem, I got 10 m for the answer. Can anyone tell me whether or not

    asked by Anonymous on January 25, 2010
  34. Math-stats

    The playing times of 20 songs on a top-hits radio station are recorded in the chart below. Playing Time (minutes:seconds) 3:32 3:24 2:54 3:07 4:52 3:45 2:39 3:09 3:34 3:26 3:35 4:17 4:03 3:52 5:10 4:59 3:07 4:00 3:07 2:56 In a histogram of this data, which

    asked by Sophie on July 2, 2009
  35. HELP PLEASE

    A 2.0kg block of wood starts at rest and slides down a ramp. Its initial height is 12.0m. If the final velocity of the block is 13m/s, determine the energy of this system that has been turned into heat.

    asked by Student12 on March 28, 2017
  36. physics

    Short projectile motion question A German rocket from the second world war had a range of 3000meters reaching a maximum height of 1000meters. Determine the rockets maximum velocity

    asked by jake on March 12, 2010
  37. physics

    When a man throws a ball vertically up his watch fall down from his hand.if the initial speep of the ball is 20m/s from a building.what will be its velocity when it reaches the ground if the height difference b/n them is 100m?

    asked by minas on April 2, 2012
  38. Physics

    A stone is thrown upwards from the roof with a velocity 15ms^-1 at an angle 30degree to the horizontal. The height of the building is 40m.calculate the magnitude of the velocity of the stones before it strikes the ground.

    asked by Hannah on July 4, 2015
  39. childcare

    what are the three main factors in a readiness model? A Maturation, learning, and motivation B Height, weight, and age C Psychological, social, and physical D Age, intelligence, and agility. The answer correct is A

    asked by Rosa on January 10, 2010
  40. Physics

    a projectile is launched from a cliff 100m above level ground with a launch velocity angle of 20 degrees above the horizontal What is the horizontal displacement and time upon impact And the max height it traveled

    asked by Carmieee on August 16, 2017
  41. physics

    A car in an amusement park travels without friction on a vertical loop of 20 m radius. Calculate from what minimum height h it needs to be released from rest in order to remain on the track at the top of the loop.

    asked by JuliePham on March 4, 2016
  42. Physics

    A volleyball is launched straight up at an initial velocity of 2.3 m/s. It is then spiked by a taller player 0.8 meters above the launch height. How high did it rise, and how long did the volleyball remain in the air between the players?

    asked by Jessica on October 29, 2014
  43. geometry

    find the surface area of a right prism with the given features: The bases are trapezoids with bases of lengths 6 and 10 perpendicular to one side of the length 12 ; height = 12 Round the answer to the nearest square unit

    asked by Sam on October 7, 2010
  44. Maths

    How many silver coins, 2cm in diameter and of thickness 2 mm, must be melted to form a showpiece in the form of a frustum of a cone having height 9 cm and radii of the outer circular ends as 5cm and 3cm?

    asked by Simran on April 5, 2016
  45. physics

    On a banked race track, the smallest circular path on which cars can move has a radius r1 = 103 m, while the largest has a radius r2 = 157 m, as the drawing illustrates. The height of the outer wall is 18 m.

    asked by vic on September 10, 2012
  46. Calculus help!

    A ball is shot into the air from a bridge, and its height, y, in feet, above the ground t seconds after it is thrown is given by y=f(t) = −16t2 + 55t + 33. What is the average velocity of the ball during the first second? Round your answer to two decimal

    asked by Jackie on February 6, 2013
  47. Physics

    A projectile is fired at 32.5° above the horizontal. Its initial speed is equal to 160.0 m/s. Assume that the free-fall acceleration is constant throughout and that the effects of the air can be ignored. What is the maximum height reached by the

    asked by Anonymous on December 2, 2015
  48. physics

    a brick is thrown upward from the top of a building at an angle of 25 degrees to the horizontal and with an initial speed of 15 m/s. what is the velocity of the brick at the max height? (the answer is 13.6 but I don't understand why or how to do it) (i

    asked by Anthony on January 31, 2017
  49. geometry

    Determine the volume of the figure. The base of the pyramid is the triangle and we don't know it's height I need to find it first. solve for h The numbers are 5ft and 7ft on top and 6ft and 5ft on bottom. I have no idea how to do this one can someone

    asked by angela on June 24, 2012
  50. physics - HELP

    A parachustist jumps from an airplane and freely falls y=51.8 m before opening his parachute. Thereafter, he decelerates at a=1.86 m/s^2. As he reaches the ground, his speed is 3.04 m/s. a)How long was the parachutist in the air? b)At what height did the

    asked by Anonymous on September 19, 2009
  51. childhood

    what are the three main factors in a readiness model? A Maturation, learning, and motivation B Height, weight, and age C Psychological, social, and physical D Age, intelligence, and agility. The answer correct is A

    asked by Rosa on January 10, 2010
  52. Geometry

    According to OSHA, a ladder that is placed against a wall should make a 75.5 degree angle with the ground for optimal safety. To the nearest tenth of a foot, what is the maximum height that a 10-ft ladder can safely reach?(trigonometry)

    asked by Anonymous on January 13, 2012
  53. Science, Maths

    A block and tackle of 5 pulleys is used to raise a load of 5o kgf steadily through a height of 20m. The work against friction is 2000J.Calculate the work done by effort, efficiency and mechanical advantage.

    asked by Shreya on September 23, 2017
  54. physics

    A 2.0-m-tall basketball player is standing on the floor a distance d from the basket, as shown in the figure below. He shoots the ball at an angle of 40.0o above the horizontal with a speed of 10.67 m/s and makes the shot. The height of the basket is 3.05

    asked by kiki on July 29, 2013
  55. Maths

    The angle of elevation of the top of a tower fron a point 42m away from its base on level ground is 36degree.find the height of the tower.NOTE:no calculation only scale drawing

    asked by Anonymous on May 6, 2018
  56. Calculus

    a projectile is fired vertically upward from ground level with a velocity of 1600 ft/sec. If air resistance is neglected, find its distance s(t) above ground at time t. What is its maximum height?

    asked by John on November 29, 2016
  57. Math

    Isaac throws an apple straight up (in the positive direction) from 1.0 m above the ground, reaching a maximum height of 35 meters. Neglecting air resistance, what is the ball’s velocity when it hits the ground?

    asked by Julie on April 18, 2016
  58. physics

    A crane uses a block and tackle to life a 25 kN boulder to a height of 26 m. a. how much work is done on the stone? put your answer in scientific notation. b. if the work is done in 15s, what is the power output in watts and in horsepower?

    asked by Rose on September 3, 2012
  59. Maths

    A metallic right circular cylinder is15cm high and the diameter of the base is 14cm it is melted and recasted into another cylinder with radius 4cm find its height and curved surface area

    asked by Dependra on November 3, 2016
  60. PHYSICS

    A BALL IS PROJECTED VERTICALLY UPWARD FROM THE TOP OF A TOWER 60MITRE HIGH WITH A VELOCITY OF 30MITRE PER SECONDS.WHAT IS THE MAXIMUM HEIGHT ABOVE THE GROUND LEVEL?HOW LONG DOES IT TAKE TO REACH THE GROUND?

    asked by Anonymous on November 15, 2015
  61. calculus

    A box of rectangular base and an open top has a surface area 600 cm2. If the height of the box is equal to its width, find the dimensions that give a maximum volume.

    asked by ayah on January 14, 2013
  62. physics

    On a banked race track, the smallest circular path on which cars can move has a radius of 117 m, while the largest has a radius 167 m, as the drawing illustrates. The height of the outer wall is 18 m.

    asked by mk on September 20, 2014
  63. Math

    Deternmine the volume of a cylinder with a radius of 5cm and a height of 30cm. How long would it take it to fill this cylinder with water if you were using a fountain with a flow rate of 2400 mL/min? 1cm^3=1mL

    asked by Les on September 19, 2016
  64. MATH

    A box with an open top has vertical sides, a square bottom, and a volume of 4 cubic meters. If the box has the least possible surface area, find its dimensions. Length of base= Height=

    asked by Jim on November 14, 2012
  65. math

    Short projectile motion question A German rocket from the second world war had a range of 3000meters reaching a maximum height of 1000meters. Determine the rockets maximum velocity

    asked by devin on March 12, 2010
  66. university physics

    A cable is used to lift a 310. kg crate upward, resulting in 7.82×103 N of tension in the rope. Using work and energy, solve for the speed of the crate after being lifted from rest to a height of 1.40 m above the floor.

    asked by Anonymous on November 11, 2018
  67. Science

    A projectile of mass 0.650 kg is shot straight up with an initial speed of 20.0 m/s. If the projectile rises to a maximum height of only 12.4 m, determine the magnitude of the average force due to air resistance.

    asked by Anonymous on December 14, 2010
  68. Physics

    A person kicks a rock off a cliff horizontally with a speed of 20.0 m/s. It takes 7.0 seconds to hit the ground, find: a. height of the cliff b. final vertical velocity c. horizontal range

    asked by Anonymous on November 6, 2015
  69. Physics

    On a banked race track, the smallest circular path on which cars can move has a radius of 115 m, while the largest has a radius 165 m, as the drawing illustrates. The height of the outer wall is 18 m.

    asked by D on November 7, 2012
  70. Geometry

    What is the surface area of the cylinder in terms of Pi? (A picture of a cylinder with 11in as its radius and 23 in as its height) A)748pi in^2 B)627pi in^2 C)506pi in^2 D)242pi in*2 (I'm not sure how to do this,I did it before and got it right but I lost

    asked by Crystals on May 9, 2017
  71. Physics

    Searches related to a stone is projected vertically upward with a speed of 14m/s from a tower 100m high. find the maximum height attained and the speed with which it strikes the ground

    asked by Anonymous on July 22, 2016
  72. physics

    A 1-kg rocket is fired straight up from level ground. The engine is able to provide a constant 15N of thrust for exactly 5 seconds after which it shuts of completely. Find the maximum height that the rocket achieves.

    asked by eugene on February 22, 2011
  73. physics

    a football is kicked with an initial speed of 80 m/s at an angle of 30 degrees above the horizontal. A. what is the maximum height that the ball attains? b. what is the balls hang time? (how long is it in the air) c. what is the range of the ball? (how far

    asked by Ely on October 20, 2016
  74. physics

    two particles of mass m1 and m2 are joined by a massless spring of spring constant k and natural length L.Initially m2 is on table and m1 is above m2 at a vertical height h.At t=0 m1 moves with velocity v0.find the position of the masses

    asked by Anonymous on December 4, 2010
  75. geometry

    a person is standing 40ft from a flagpole and can see the top of the pole at a 35 degree angle of elevation. the persons eye level is 4ft from the grond. what is the height of the flagpole to the nearest foot

    asked by victoria on March 15, 2012
  76. physics

    A cannonball is fired horizontally from the top of a cliff. The cannon is at height = 70.0 above ground level, and the ball is fired with initial horizontal speed . Assume acceleration due to gravity to be = 9.80 .

    asked by Anonymous on February 4, 2011
  77. Math

    It was observed that the shadow of a vertical pole of 6 meters longer when the angle of elevation of the sun was 30° than when it was 60°.By means of a sketched diagram,calculate,correct to two decimal places,the height of the pole.

    asked by Evans on May 25, 2016
  78. Physics

    A broad jumper begins his jump at an angle of 22 f degrees from the horizontal at the middle of the jump he reaches a height of 70m ANSWER: 9.16m/s Relevant Formulas: dv=1/2at^2...dh=vht...t=vv/a..

    asked by Loratadine on October 25, 2012
  79. physics

    31. (II) a shotputter throws the shot with an initial speed of 15.5m/s at a 34.0* angle to the horizontal. Calculate the horizontal distance traveled by the shots if it leaves the athlete’s hand at a height of 2.20m above the ground.

    asked by Anonymous on December 8, 2010
  80. 6th grade

    The men's outdoor world regard in the high jump 2.45 meters and 8ft 0.5 inches. The women outdoor record in high jump 2.09 meters and 6ft 10.25in How much higher is the men's high jump record?

    asked by car on November 17, 2009
  81. College Algebra

    Suppose that the length of a rectangle is 3 inches longer than the width and that the perimeter of the rectangle is 78. Set up an equation involving only L, the length of the rectangle. Solve this equation algebraically to find the length of the rectangle.

    asked by Alicia on November 16, 2007
  82. Chemistry

    The complex ions of Zn2+ are colorless. Why? Keith, Natali, Cindy, Joel, or whoever, Please note that we don't do students' homework for them. Our tutors try to give you the information to help you complete your assignment on your own. If there's not a

    asked by keith on April 27, 2007
  83. english

    hi im indiya and im here to ask you a interesting question well my question is do you no a website about balanced reports based on why children are given homework? The why is simple: Practice. Humans learn by repetition spaced over time. The average task

    asked by indiya on January 11, 2007
  84. math

    I don't understand how to figure this out. Couldn't you have multiple answers? The total receipts for a basketball game are $1,400 for 788 tickets. Adults paid $2.50 and students paid $1.25. The tickets takers count only the amount of tickets, not the type

    asked by Holly Y. on October 23, 2009
  85. numerical & proportional reasoning

    each summer, a high school sponsors a picnic for new students, their parents and teachers. last year, 65 pounds of hamburger patties were cooked to serve b/w 250 and 300 people. this year the school expects between 325 & 375 people. estimate the number of

    asked by sam on February 23, 2008
  86. sentences

    Please note that we don't do students' homework for them. Once YOU have tried to write a sentence for your assignment, please re-post. Then someone here will be happy to give you feedback. =) who can you put a sentence that has including eveyone including

    asked by Writeacher on March 5, 2007
  87. 7th g-math

    An ice-cream shop offers a small size cone and a large size cone. The height of the large cone is 2 times the height of the small cone. The radius of the large cone is 2 times the radius of the small cone. Which statement is true about the volumes of the

    asked by Cassidy on February 25, 2013
  88. English: College Essay

    I need someone to please revise my college essay, I've had some teachers look over it and help me make it better. But well... I'm at home right now and I don't have anyone to help me at the moment. Anything will be do really. Prompt: Evaluate a significant

    asked by Alex on November 30, 2008
  89. Math

    1.) Mickey’s restaurant sells hamburgers. The amount charged for a hamburger (h) is based on the cost for a plain hamburger plus an additional charge for each topping (t) as shown in the equation that follows: h = 0.60t + 5 What does the number 0.60

    asked by Lean on November 21, 2013
  90. Chemistry

    Aluminum wire is sold on 10 pound spools (100.00 lbs). The diameter of a 12 gauge aluminum wire sold on these spools is 0.0808 inches. If the density of the aluminum is 2.70 g/ cm3. Wat is the length ( in meters) of the wire on the 10 pound spool of 12

    asked by leia on January 6, 2011
  91. Math

    The first row of a concert hall has 25 seats and each row after the first has one more seat than the row before it. There are 2 rows of seat. 1)Write a rule for the number of seats in the nth row. 2)35 students from a class want to sit in the same row. How

    asked by Lindsay on March 2, 2010
  92. Philosophy

    • It is not uncommon that students leave the class with more confusion than clarity. By “confusion”, I do not mean a lack of understanding of the concepts. I mean instead the feeling of being pulled in several directions and not knowing where to

    asked by TayB on May 23, 2015
  93. 6th grade Math

    Can you check the following? 3. Lily is cutting a roll of cookies into slices that are 3/8 inch thick. If the roll is 10 1/2 inches long, how many slices can she cut? Ans: (21/2)/(3/8) = (21/2 )* (8/3) = 28 slice 5. Amy has painted 3/4 of a room. She has

    asked by Jared on September 13, 2018
  94. Algebra

    A hanging spring is compressed 3 inches from its rest position and released at t = 0 seconds. It returns to the same position after 0.8 seconds. I need help Finding: a) the amplitude of the motion b) the period of the motion c) the frequency of the motion

    asked by Anonymous on May 25, 2018
  95. physics

    object a does a freefall motion from an 80-m building and object b thrown upward from the base at the same time. they collide after 2s. find the initial velocity of object b. height is 80 m.

    asked by flay on January 9, 2013
  96. MATH

    A cylinder has a circular base with a diameter of 12 ft. The height of the cylinder is 4 ft. What is the volume of the cylinder rounded to the nearest whole number? Use 3.14 for pi. A. 452in2 B. 1,809ft2 C. 151ft2 D. 603ft2

    asked by jake on March 3, 2019
  97. math

    Jack has 222 lego cubes, each of side length 1. He puts them together to form a rectangular prism. If the perimeter of the base of the prism is 10, what is the height of the prism?

    asked by Mathslover on May 27, 2013
  98. physics

    The body asends a slope with speed 10m/s.If 105J of energy of body is lost doe to friction ;the height to which the body will rise is? Ans4.5m

    asked by Thousif on January 10, 2018
  99. maths

    Two spheres of radius 6 cm and 4cm are inscribed in a right circular cone.The bigger sphere touches the smaller one and also the base of cone .find the height of the cone?

    asked by pradeep jangid on October 30, 2012
  100. physics

    a ball is dropped from a tower of height 5 m. it accelerates uniformly at 10m/s .if mass of the ball is 2 kg ,find the momentum transferred by a ball to the ground on striking.

    asked by TINA on October 9, 2013