# On planet Seeturn, the free fall acceleration is 9.800 N/kg but there is also a strong downward electric field that is uniform close to the planet's surface. A 2.00 kg ball having a charge of 5.00 micro C (5.00*10-6) is

26,508 results, page 16
1. ## Physics

A large centrifuge is used to expose aspiring astronauts to accelerations similar to those experienced in rocket launches and atmospheric reentries. a) At what angular velocity is the centripetal acceleration 10 gs if the rider is 10.0 m from the center of

asked by Anonymous on October 3, 2015
2. ## Physics

An object is released from rest and falls in free fall motion. The speed v of the object after it has fallen a distance y is given by v2 = 2gy. In an experiment, v and y are measured and the measured values are used to calculate g. If the percent

asked by Anonymous on September 21, 2015
3. ## physics

An object is released from rest and falls in free fall motion. The speed v of the object after it has fallen a distance y is given by v2 = 2gy. In an experiment, v and y are measured and the measured values are used to calculate g. If the percent

asked by jane on February 6, 2017
4. ## Algebra.

At the local ballpark, the team charges \$5.00 for each ticket and expects to make \$1,300.00 in concessions. the team must pay in players \$1,800.00 and pay all the workers \$1,500.00. Each fan gets a free bat, costs the team \$3.00 per bat of the following,

asked by Sierra. on January 6, 2016
5. ## physics

A passenger with mass of 80 kg stands on the floor of an elevator of mass 250 kg as it accelerates upward with an acceleration of 3 m/s^2. Determine the tension in the elevator cable. Draw a free-body diagram.

asked by hello on September 30, 2011
6. ## Physics

An green hoop with mass mh = 2.4 kg and radius Rh = 0.14 m hangs from a string that goes over a blue solid disk pulley with mass md = 2.2 kg and radius Rd = 0.1 m. The other end of the string is attached to a massless axel through the center of an orange

asked by stewart on November 10, 2014
7. ## is my answer right? government

Which was an argument against ratification of the Constitution? (1 point) A Bill of Rights is not necessary. The Ohio Plan should be used. A strong national government will become oppressive. A strong national government is necessary for national security.

asked by XenaGonzalez on August 20, 2015
8. ## chem

Is lithium hydroxide a strong or weak base? It is 100% ionized so, by definition, it is a strong base. Try looking up Kb for LiOH in a set of tables. It won't be there, further proof that it is not a weak base. thank you!

asked by Anna on May 9, 2007
9. ## chemistry

Calculate the compositionof the gaseous mixture obtained when 1.25 mol f carbon dioxide is exposed to hot carbon at 800 degree celcius in a 1.25 liter vessel. The equilbrim constant kc at 800 degree celcius is 14 for the reaction CO2 + C = 2C0

asked by sam on April 19, 2013
10. ## pHYSIC

5. Now, wait until the planet is at the winter solstice (12:00am). a) How many hours of daylight are there on the winter solstice with the inclination at 45 degrees? Use the same criteria for the length of day that you used for the previous question. b)

asked by Luis on July 16, 2012
11. ## physics

1. Measurements show that there is an electric field surrounding the Earth. Its magnitude is about 100 N/C at the Earth's surface and points inward toward the Earth's center. From this information, can you state whether the Earth is negative or positive?

asked by Nicole on July 15, 2010
12. ## Physics

You have just discovered a planetary system consisting of a star (Dagobahr) and its two planets: Rool and Krau. Planet Rool has an average orbital radius 3 times as big as planet Krau. If planet Rool orbits Dagobahr in 2 earth years (1earth year = 365

asked by Andrea on November 15, 2007
13. ## English

Identify the sentence that is punctuated correctly. A. Although, the impact on our planet is clear global warming was not a high priority for many years. B. Although the impact on our planet is clear, global warming was not a high priority for many years.

asked by Susan on May 6, 2014
14. ## English

Identify the sentence that is punctuated correctly. A. Although, the impact on our planet is clear global warming was not a high priority for many years. B. Although the impact on our planet is clear, global warming was not a high priority for many years.

asked by Angela on May 6, 2014
15. ## Physics

In order to open tha clam it catches, a seagull will drop the clam repeatedly onto a hard surface from high in the air until the shell cracks. if a seagull flies to a height of 16.4m, how long will the clam take to fall? The acceleration of gravity is

asked by Linda on September 17, 2012
16. ## Physics

In order to open tha clam it catches, a seagull will drop the clam repeatedly onto a hard surface from high in the air until the shell cracks. if a seagull flies to a height of 16.4m, how long will the clam take to fall? The acceleration of gravity is

asked by Linda on September 17, 2012
17. ## math

1.Glenn bought a car for Php600,000. The yearly depreciation of his car is 10% of its value at the start of the year. What is its value after 4 years? A. Php437,400 B. Php438,000 C. Php393,660 D. Php378,000 2. During a free-fall, a skydiver jumps 16 feet,

asked by miles on June 27, 2015
18. ## Math

A basketball player’s probability of making a free throw is 9/10. When the player shoots 2 free throws in a row, X is the number of free throws that score. Create a probability distribution table for the variable X. Use the table to find the indicated

asked by Eira on September 26, 2016
19. ## statistics

A basketball player makes 60% of the free throws that he attempts, except that if he has just tried and missed a free throw then his chances of making a second one go down to only 30%. Suppose he has just been awarded two free throws. Find the probability

asked by john on July 17, 2016
20. ## Economics(12 Multiple Choice)

1. John Maynard Keynes said business investment is determined mainly by a. the state of business confidence b. expectations about the future c. psychological perceptions about the economy d. all of the above 2. Assume that the Canada experiences higher

asked by Victor on November 26, 2009
21. ## physics

a yo-yo of mass 440kg measuring 0.9m in radius was dropped from a platform 63m high. One end of the string was tied to the platform, so the yo-yo unwinds as it descends. Assuming the axle of the yo-yo has a radius of 0.2m, find the velocity of descent at

asked by samantha on December 29, 2010
22. ## physics 213

Two newly discovered planets follow circular orbits around a star in a distant part of the galaxy. The orbital speeds of the planets are determined to be 44.7 km/s and 56.2 km/s. The slower planet's orbital period is 8.61 years. (a) What is the mass of the

asked by Erin on February 19, 2012
23. ## physics

2. A partial record of a free falling body showed only the three consecutive points. The distance from the first to the second was 24.25 cm. that from the first to the third was 58.92 cm. The time interval was 1/10. Find the acceleration and the

asked by black n' white on January 23, 2013
24. ## Chemistry

A solution has [OH-] = 3.5 × 10-6. Based on that, what must be true about this solution? A. It is an acidic solution. B. It is a strong base. C. It is a strong acid. D. It is a basic solution.

asked by Laura on September 17, 2016
25. ## English

I know this sentence is strong but, how do I explain it's strong? Very few students use heroin. Tom is a student. So Tom doesn't use heroin.

asked by Lee on November 19, 2007
26. ## physics

An object falls from height h from rest and travels 0.45h in the last 1.00 s. (a) Find the time of its fall. (b) Find the height of its fall. I've tried multiple times but I cannot get the correct answer.

asked by Ryan on September 3, 2009
27. ## Physics

A rock is thrown vertically upward with a speed of 12.0 from the roof of a building that is 40.0 above the ground. Assume free fall. In how many seconds after being thrown does the rock strike the ground? What is the speed of the rock just before it

asked by Morgan on September 19, 2006
28. ## Microeconomics

Demand increases, causing prices to rise. Higher prices cause demand to fall. Therefore, prices fall back to their original level. This sentence is wrong. What is wrong with it? If demand increases, wouldn't it stay increased which will not cause the

asked by Tami on July 20, 2007
29. ## Physics

Pigeons are bred to display a number of interesting characteristics. One breed of pigeon, the "roller," is remarkable for the fact that it does a number of backward somersaults as it drops straight down toward the ground. Suppose a roller pigeon drops from

asked by Joseph on October 24, 2011
30. ## physics

As Newton showed, gravity is a force that acts along the line separating two bodies and causes the two bodies to be attracted to each other (i.e. it is a central force). In this problem, assume that the planetary orbits about the Sun are circular. a. Does

asked by zeph on October 24, 2010
31. ## physics

an object is observed to fall from a bridge, striking the water below 3.03s ...with what velocitydid it strike the water?what was the average velocity during the fall?how high is the bridge?

asked by nano on March 21, 2011

1. Which of the following statements best support the importance of a free and responsible press to the healthy functioning of a democracy? Select all that apply. (2 points) A free press protects the individual rights of all people.

asked by Ren on February 9, 2017
33. ## Physics

A 60 kg high jumper lands on a foam pit and comes to rest. If the pit is able to exert an average force of 600 N on the high jumper in breaking the fall, what is the jumper’s acceleration?

asked by Estefani on June 19, 2012
34. ## physics

An object is thrown with velocity v from the edge of a cliff above level ground. Neglect air resistance. In order for the object to travel a maximum horizontal distance from the cliff before hitting the ground, the throw should be at an angle theta with

asked by me on December 29, 2006
35. ## astronomy

2. We ultimately want to find the amount of solar energy that hits the observer on the planet. Energy is usually measured in Joules, but there are other appropriate units of energy as well; kilowatt-hours for example, are used to measure the amount of

asked by Luis on July 16, 2012
36. ## History

Who is Malala Yousafzai similiar to? I said Martin Luther King Jr, or Maya Angelou What are their goals? Malala:To provide 12 years of free, quality education to every child on the planet. She wanted to reach all those people who live in poverty, those

asked by Sarah on April 4, 2018
37. ## math

Math :The following table gives the free throws attempted? The following table gives the free throws attempted (FTA) and the free throws made (FTM) for the top five players in the NBA for a recent season. Calculate the free throw percentage for each player

asked by lynn on October 10, 2007
38. ## Chemistry

Which statement about carbon-carbon bonds is correct? A) Carbon has an unusually high proton count. This causes the nucleus to attract bonding electrons more and results in an unusually strong bond. B) Carbon has unusually high electronegativity. This

asked by Winter on June 12, 2018
39. ## American Government

The question in every case is whether the words used are used in such circumstances and are of such a nature as to create a clear and present danger that they will bring about the substantive evils that Congress has a right to prevent. –Schenck v. United

asked by Joey on December 12, 2016
40. ## Physics

A ball, dropped from rest, cover 2/7 of the distant to the ground in the last 2 seconds of its fall. From what height was the ball dropped? What was the total time of the fall?

asked by Robert C on October 11, 2009
41. ## Physics

a student sees a ball fall from the third floor of a building and notes that it takes 2.50 s for the ball to fall the last half of the way to the ground. What is the height of the building?

asked by Liselotte on September 20, 2015
42. ## geometry

a tree is standing upright.i want to cut it down at the base.how would i find out how tall it is. so that i could fall it without hitting any buildings.ie if it is 80 feet tall it should fall 80 feet?

asked by DEEK on January 14, 2012
43. ## Chemistry

How can I tell whether something is a weak, strong, or non-electrolyte? I know non-electrolytes do not ionize, strong almost completely ionize and weak only partially. But how would I be able to tell? Like, something like KOH is a strong electrolyte

asked by Raj on December 16, 2007
44. ## physics

Two stones are thrown simultaneously, one straight upward from the base of a cliff and the other straight downward from the top of the cliff. The height of the cliff is 6.82 m. The stones are thrown with the same speed of 8.88 m/s. Find the location (above

asked by Syd on January 24, 2015
45. ## Engineering Fund.

A large box whose mass is 19.0 kg rests on a frictionless floor. A mover pushes on the box with a force of 235 N at an angle 34.8° below the horizontal. Draw the box's free-body diagram and use it to determine the acceleration of the box. m/s2

asked by josephz on October 4, 2012
46. ## Calculus

Okay so I have the following question and I am totally stuck: Newton's Law of Gravitation says that the magnitude F or the force exerted by a body of mass m on a body of mass M given by F=(GmM)/r^2 where G is the gravitational constant and r the distance

asked by Tracy on October 12, 2006
47. ## physics

A stationary rocket is launched vertically upward. After 4s, the rocket's fuel is used up and it is 225.6 m above the ground. At this instant the velocity of the rocket is 112,8 m/s. Then the rocket undergoes free fall. Ignore the effect of the air

asked by clement on March 8, 2014
48. ## physics

Satellite A orbits a planet with a speed of 10,000 m/s. Satellite B is twice as massive as satellite A and orbits at twice the distance from the center of the planet. What is Satellite B's speed?

asked by Jennifer on October 2, 2008
49. ## math

A basketball player with a free throw shooting percentage of 60% gets fouled and goes to the line to shoot two free throws. What are the odds in favor of her making her first shot?

asked by Carli on November 5, 2009
50. ## Math

A basketball player with a free throw shooting percentage of 60% gets fouled and goes to the line to shoot two free throws. What are the odds in favor of her making her first shot?

asked by Jenny on October 11, 2009
51. ## Math

Katie makes 65% of her shots from the free throw line. Can you determine how many consecutive free throws she must make in order to increase her percentage to 68%? Explain.

asked by BOB on July 2, 2016
52. ## Algebra

Airball, Bud is a terrible free throw shooter, but the first part of the seaon he shot 10 out of 16. How many consecutive free throws must he miss to lower his record to 40%.

asked by Bella on April 18, 2018
53. ## math

katie makes 70% of her shots from the free throw line . can you determine how many consecutive free throws she must make in order to increase her precent. explain

asked by amanda on June 9, 2011
54. ## Physics

A cannon fires a free projectile at an angle 85 from the ground. The cannonball has a speed of 150 m/s and it is launched from a hill 20 m above the plain where it will land 1. What is the x component of the cannonballs initial velocity 2. What is the y

asked by Michelle on February 20, 2014
55. ## Physics

A cannon fires a free projectile at an angle 85 from the ground. The cannonball has a speed of 150 m/s and it is launched from a hill 20 m above the plain where it will land 1. What is the x component of the cannonballs initial velocity 2. What is the y

asked by Michelle on February 17, 2014
56. ## physics

A stone is dropped from rest at the top of a mine shaft. It takes 58 s for a stone to fall to the bottom of a mine shaft. How deep is the shaft? The acceleration of gravity is 9.8 m/s2 .

asked by n on October 27, 2013
57. ## physics

a stone is dropped from rest at the top of a mine shaft. it takes 59 s for a stone to fall to the bottom of a mine shaft. how deep is the shaft? the acceleration of gravity is 9.8 m/s2

asked by shaniqua on September 20, 2012
58. ## physics

One side of the roof of a building slopes up at 35.5°. A student throws a Frisbee onto the roof. It strikes with a speed of 15.0 m/s and does not bounce, but slides straight up the incline. The coefficient of kinetic friction between the plastic and the

asked by eric on February 24, 2011
59. ## math

A pair of skydivers jump out airplane 5.5km above the ground. The equation H=5500-5t^2 is an appropriate model for the divers' altitude in metres at tseconds after jumping out of the plane. A. After 10secs how far have the divers fallen? B. They open their

asked by ted on November 24, 2010
60. ## algebra

5. 16t2 gives the distance in feet a free-falling object falls in t seconds. 16t2 + 10t gives the distance an object falls in t seconds when it is thrown down with an initial velocity of 10 feet per second. Use this polynomials to: a. Find how far a wallet

asked by leigh on July 3, 2011
61. ## economics

wireless high speed internet is provided for free in the airport of the city of communityville a)At first, only a few people use the service. What type a good is this and why? b) Eventually, as more find out about the service and start using it, the spend

asked by Mankiw on January 5, 2012
62. ## Math

Please I need help! The Acme Candy Company claims that 60% of the jawbreakers it produces weigh more than .4 ounces. Suppose that 800 jawbreakers are selected at random from the production lines. Would it be unusual for this sample of 800 to contain 418

asked by M on July 29, 2010
63. ## Math-Stats

The Acme Candy Company claims that 60% of the jawbreakers it produces weigh more than .4 ounces. Suppose that 800 jawbreakers are selected at random from the production lines. Would it be unusual for this sample of 800 to contain 418 jawbreakers that weigh

asked by Melissa on July 28, 2010
64. ## Statistics

The Acme Candy Company claims that 60% of the jawbreakers it produces weigh more than .4 ounces. Suppose that 800 jawbreakers are selected at random from the production lines. Would it be unusual for this sample of 800 to contain 494 jawbreakers that weigh

asked by Chuck on April 9, 2016
65. ## physics

To show your friends how strong you are, you start pushing a big container with mass 50 kg along a long, flat highway. While you are pushing the container in a horizontal direction with an average force 350 N, it moves with acceleration 1 m/s/s. After 5

asked by mj on November 16, 2011
66. ## Statistics

The basketball player Steve Nash is the all-time career free throw shooter among active players. He makes about 90% of his free throws. In today's game, Nash misses his first two free throws. The TV commentator says, "Nash's technique looks out of rhythm

asked by Mandy on November 3, 2011
67. ## Math

Earth has a new surface of 1.97x10^8 square miles. A new planet has a surface area 13 times the surface area of Earth. What is the surface area of the new planet? Do I multiply 1.97x13 or do I multiply 13x10^8? that's what i'm confused about.

asked by River Williams on October 23, 2012
68. ## Physics

A free fall parachutist reaches a terminal velocity of 150 km/hr when dropped from a plane at a height of 10,000m. Is they terminal velocity going to be greater or smaller if they were dropped from a plane at a height of 10,000m?

asked by Kiran on March 30, 2016
69. ## Chemistry - Acid and Bases

In aqueous solution, classify these compounds as strong acids, weak acids, strong bases, weak bases, or other. HNO3 HBr HF CH3COOH H3PO4 NaOH Ba(OH)2 (CH3)3N NH3 NaCl

asked by Anonymous on November 3, 2015
70. ## Science

Which of the following is the safest place to be during an earthquake? under a very strong table In a basement In a large truck Under a car I have never been in an earthquake, but I have been in a tornado. I hid in a basement, but tornadoes aren't

asked by Anna-Belle on January 24, 2018
71. ## Induction

Given the series 1,2,3,4,5,10,20,40,80,..... which starts as an arithmetic series for the first five terms and then follows geometric series. It can be proved by strong induction that any positive integer can be written as a sum of distinct numbers of this

asked by bcruga on September 29, 2017
72. ## physics

A laboratory centrifuge on earth makes n rpm (rev/min) and produces an acceleration of 3.30 g at its outer end. This centrifuge is now used in a space capsule on the planet Mercury, where g mercury is 0.378 what it is on earth. How many rpm (in terms of n)

asked by bobjahng2 on November 26, 2010
73. ## Physics

A loaded elevator with very worn cables has a total mass of 3000 kg, and the cables can withstand a maximum total tension of 40,000 N. (a) What is the maximum upward acceleration for the elevator if the cables are not to break? (b) What must the tension be

asked by Vv on November 18, 2006
74. ## Statisic for managers

Brand new to statistics ,no strong math background please help. Case 6.1 Suppose that you are a contestant on Lets make a deal. Monty has just given you a free trip touring toxic waste sites around the country. He now offers you a trade: Give up the trip

asked by Tammy on February 6, 2011
75. ## Physics

A 260-kg log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. The ramp is inclined at 30.0° with respect to the horizontal. The coefficient of kinetic friction between the log and the ramp is 0.870, and the log has an

asked by Natasha on February 21, 2012
76. ## Physics

A 260-kg log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. The ramp is inclined at 30.0° with respect to the horizontal. The coefficient of kinetic friction between the log and the ramp is 0.870, and the log has an

asked by Natasha on February 21, 2012
77. ## AP Physics

A 239-kg log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. The ramp is inclined at 29.0° with respect to the horizontal. The coefficient of kinetic friction between the log and the ramp is 0.800, and the log has an

asked by Corey on November 14, 2008
78. ## physics

A 208-kg log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. The ramp is inclined at 34.0° with respect to the horizontal. The coefficient of kinetic friction between the log and the ramp is 0.830, and the log has an

asked by Anonymous on September 27, 2012
79. ## Physics

Miss E. deWater, the former platform diver of the Ringling Brothers' Circus, dives from a 80.0-meter high platform into a shallow bucket of water (see diagram at right). Determine her speed and her height after each second of fall. When t = 0 s: speed = 0

asked by Ryan on November 6, 2015
80. ## Physics

Miss E. deWater, the former platform diver of the Ringling Brothers' Circus, dives from a 80.0-meter high platform into a shallow bucket of water (see diagram at right). Determine her speed and her height after each second of fall. When t = 0 s: speed = 0

asked by Ryan on November 6, 2015
81. ## University Physics

A rock is tossed straight up with an initial speed of 20 m/s. When it returns, it fall into a hole that is 8.0 m deep. What is the velocity of the rock (in m/s) when it hits the bottom of the hole? Use -9.80 m/s2 for the local acceleration due to gravity

asked by Me on September 12, 2011
82. ## math

in a distribution of 160 values with a mean of 72,at least 120 fall within the interval 67-77. approximately what percentage of values should fall in the interval 62-82? use chebyshev's formula.

asked by ellen on June 28, 2011
83. ## Physics

An object moving with uniform acceleration has a velocity of 13.0 cm/s in the positive x-direction when its x-coordinate is 2.73 cm. If its x-coordinate 2.95 s later is −5.00 cm, what is its acceleration? cm/s^2 Express the position of the object in

asked by Ken on March 21, 2018
84. ## chemistry

in our notes for strengths of acids and bases it says that you could add a strong/weak acid with a strong/weak base and it will give you a low, medium or high delta h. so wouldn't acids and bases be related to thermochemistry?

asked by will on July 16, 2015
85. ## english-creative writing

I really want a list of strong words; nouns, adjectives, and verbs. For my creative writing class I really want strong, concrete words to place emphasis on the right spots in my writing. Thanks. P.S.I'm in high school so please keep that in mind when

asked by elise on November 29, 2007
86. ## SCIENCE PLZZ HELP!!!

Given equal concentrations, which of the following produces the fewest hydronium ions in an aqueous solution? strong acid weak acid strong base weak base This is the only question i need help on and i have no clue what ut is! any help?

asked by gabby on May 28, 2016
87. ## physic

Find the force a 67.5 kg man would experience while standing in the surface of each of the following planets PLANET 1. EARTH 2. MARS 3. PLUTO Mass for earth 5.98 x 10^24 kg for mars 6.34 x 10 ^23 kg for pluto 5 x 10^23 kg distance distance for planet 6.337

asked by Dulce on July 13, 2014
88. ## physics

A 5.00-kg object placed on a frictionless, horizontal table is connected to a cable that passes over a pulley and then is fastened to a hanging 9.00-kg object. Draw free-body diagrams of both objects. Find the acceleration of the two objects and the

asked by Brandon on March 26, 2010
89. ## Physics

A 5.00-kg object placed on a frictionless, horizontal table is connected to a cable that passes over a pulley and then is fastened to a hanging 9.00-kg object. Draw free-body diagrams of both objects. Find the acceleration of the two objects and the

asked by Brandon on March 24, 2010
90. ## Math

The Acme Candy Company claims that 60% of the jawbreakers it produces weigh more than .4 ounces. Suppose that 800 jawbreakers are selected at random form the production lines. Would it be unusual for this sample of 800 to contain 386 jawbreakers that weigh

asked by Paul on October 3, 2013
91. ## Math

the time x (in days), that it takes a planet to revolve around the sun can be approximated by the equation x=0.407√(d^3),where d is the mean distance of the planet from the sun in millions of miles. It takes Venus approximately 226 days to complete one

asked by Mary on November 3, 2011
92. ## math

the wheel ( including the tire) of a sports car under development by one of the Big Three auto companies has an 11 in radius. what would be the car's speed in miles per hour if its wheel are turning 800 rpm? ------------------- 800 rev/ 1 min x 60 min/ 1

asked by greeny on August 27, 2012

Twins who are 19.0 years of age leave the earth and travel to a distant planet 12.0 light-years away. Assume that the planet and earth are at rest with respect to each other. The twins depart at the same time on different spaceships. One twin travels at a

asked by Jim on April 6, 2012
94. ## Physics Question

Twins who are 19.0 years of age leave the earth and travel to a distant planet 12.0 light-years away. Assume that the planet and earth are at rest with respect to each other. The twins depart at the same time on different spaceships. One twin travels at a

asked by Anonymous on April 6, 2012
95. ## SITES

is cramster . com a free site ? I'm actually searching for sites that offer free homework help, gladly I found this one, but I'm wondering if there are others as well, that don't require money or an email address?

asked by Anonymous on October 25, 2010
96. ## Science

If you were to take a step into a small black hole, your body would most closely resemble toothpaste being extruded out of the tube. Tidal forces are so strong at a black hole's threshold (called the "event horizon") that they could stretch your body into

asked by Mrs. Talyer on September 25, 2018
97. ## science

A kid kicks a soccer ball of mass 430g so that the ball moves on a flat rough ground at a velocity of 16m/s towards a stairway. The ball experiences a constant frictional force of 5N over a distance of 200cm. it then hits the stairway and collides

asked by khosi on March 16, 2017
98. ## science

. A parachutist jumps from a plane at 8000 ft altitude with a 24-ft diameter chute. Total weight of the jumper and the chute is 185 lbs. Determine the time to fall from 8000 ft to 5000 ft using the average fall velocity between the two elevations.

asked by hassanian on February 12, 2011
99. ## biochemistry

Calculate the delta G naught prime f (free energy of formation) of the following compounds at 25 degrees celsius. ethyl acetate (ethyl acetate + H2O ethanol + acetate- + H): delta G naught prime =-19.7 kj/mol); the pka of acetic acid is 4.76) Free Energies

asked by meraki on September 9, 2013
100. ## physics

A toy car runed off the edge of a table that is 1.225m high. If the car lands 0.400m from the base of the car to fall, a)how long does it take the car to fall 2(1.225)/-9.80=-0.25=0.5s b)what is the horizontal velocity of the car?

asked by Anonymous on December 12, 2009