1. Botany

    During the last part of cellular respiration in the mitochondrion, electron flow is tapped and used to make ATP. Where do the electrons end up when they are finished flowing?
  2. Physics

    A television tube operates at 20,000V. What is min wavelength for the continuous x-ray spectrum produced when the electrons hit the phosphor?
  3. pchem II

    the work function for metallic Caesium is 2.14 eV. Calculate the kinetic energy and the speed of the electrons ejected by light of wavelength 700 nm
  4. chemistry

    Complete and balance the displayed half reaction in neutral aqueous solution taking into account the electrons. Mg(s) → Mg2+(aq)
  5. Chem 130

    How do I do this? Using the symbol of the previous noble gas to indicate the core electrons, write the electron configuration for each of the following elements. (a) zirconium, Z = 40 (b) vanadium, Z = 23
  6. Physics

    Electrons are ejected from a photoelectric cell with a maximum kinetic energy of 1.20 eV. If the incident light has a wavelength of 410nm, what is the work funtion?
  7. Chemistry

    I don't know why these aren't posting? Can someone please explain this to me? The maximum number of electrons that can occupy ONE f orbital is: A. 14 B. 6 C. 2 D. 18 E. 10 Wrong Points Earned: 0/2 Your Response: A
  8. Chemistry Help!!!!!!!!!!!!!!

    for the following elements show the allocation of electrons to their orbitals on the basis of the Pauli exclusion principle and Hund's rule. a) Carbon b) Silicon Thanks!
  9. college Chemistry

    As one descends group 6A of the periodic table, the number of valence electrons found in each element? A. Increases B. Decreases C. Remains the same
  10. chemistry

    Balance each of the following redox equations using the half-reaction method. HI(s) + H2SO4 (aq) --> H2S(g) + I2 (s) My only question about this equation is...how do I know how many electrons I need to put on both sides? Other than that I know how to do
  11. physics 2

    How many electrons must be removed from each of two 5.40kg copper spheres to make the electrical force of repulsion between them egual in magnitude to the gravatational attraction between them?
  12. Physics

    A television tube operates at 20,000V. What is min wavelength for the continuous x-ray spectrum produced when the electrons hit the phosphor?
  13. Physics

    A television tube operates at 20,000V. What is min wavelength for the continuous x-ray spectrum produced when the electrons hit the phosphor?
  14. science help.. pls help me dr.bob22 or damon

    Dalton's ideas that atoms cannot be divided into smaller parts was disproved by the discovery of the_____ is it electrons
  15. chemistry

    Lists how many valence electrons are shared, gained, or lost by each atom of the 6 compounds?       N2           CCl4             SiO2           AlCl3             CaCl2        
  16. physics

    how many electrons must be removed from each of the two 5kg copper spheres to make the electric force of repulsion between them equal in magnitude to the gravitational attraction between them?
  17. Chemistry

    For the oxidation-reduction reaction equation given here, 2Rb+Br2 --> 2RbBr Indicate how many electrons are transferred in the formation of one formula unit of product.
  18. chemistry

    An electrolytic cell transferred 0.10 mol of electrons when a constant current of 2.0 A was applied. How many hours did this take? A. 4800h B. 80h C. 1.3h D. 0.75h E. 0.012h
  19. chemistry

    how many electrons flow through a wire in 83.9 seconds if the current was 0.32 amps? ( an ampere is a coulomb/sec)and the charge on an electron is 1.602×
  20. science

    In a device known as a ______ electrons are emitted when light shines on a metal surface? a difference in charge is called a ____ I am so stuck on these last two
  21. Chemistry

    For the oxidation-reduction reaction equation given here, 2Rb+Br2 --> 2RbBr Indicate how many electrons are transferred in the formation of one formula unit of product.
  22. physics

    a 1500kg car travelling east with a speed of 20m/s collides at an intesection with a 2500kg van travelling south at a speed of 15m/s.The vehicle undergoes a perfectly inelastic collision, and the wreckage slides 6m before coming to rest.Find the magnitude
  23. Chem. reply+asap!

    In some industrial processes, sodium chromate is added to water coolants. When the coolant is drained, the chromate ions can be removed through an electrolysis process that uses an iron anode. The products of the electrolysis are aqueous iron(II) ions and
  24. Physics--please help!!

    A hydrogen atom, when vigorously perturbed, can emit light with a frequency of 6.16·1014 Hz. When the same light from hydrogen atoms in a distant galaxy is observed on earth, the frequency is 5.76·1014 Hz. Calculate the speed at which the galaxy is
  25. physics

    A hydrogen atom, when vigorously perturbed, can emit light with a frequency of 6.16 × 1014 Hz. When the same light from hydrogen atoms in a distant galaxy is observed on earth, the frequency is 5.21 × 1014 Hz. Calculate the speed at which the galaxy is
  26. Elevation and depression

    From the top of a tower 60m high, two ships are seen in a direction due south. The angle of depression of the ships from the top of the tower are 45degre and 30degree. Find the distance between the ships
  27. URGENT: Calculus

    I don't know how to answer this: A vector can be used to represent the path of a drill tip used to bore a deep mine shaft in Sudbury one quarter of the way to the centre of the Earth. Represent the vector using a directed line segment and Cartesian
  28. Physics

    Two workers pull horizontally on a heavy box, but one pulls twice as hard as the other. The larger pull is directed at 25 degree west of north and the resultant of these two pulls is 350 netwon directly northward. Use vector components to find the
  29. Physics

    Two workers pull horizontally on a heavy box, but one pulls twice as hard as the other. The larger pull is directed at 25 degree west of north and the resultant of these two pulls is 350 netwon directly northward. Use vector components to find the
  30. math

    Dave walked from point A to point B due North East for a distance of 20m. He immediately changed direction and walked 50m from B to C on a bearing of 110 degrees. i. Calculate the distance AC ii. Find the bearing of C from A
  31. math

    Dave walked from point A to point B due North East for a distance of 20m. He immediately changed direction and walked 50m from B to C on a bearing of 110 degrees. i. Calculate the distance AC ii. Find the bearing of C from A
  32. trigonometry

    Hal walked from point A to point B due north east from a distance of 20m. He immediately changed direction and walked 50m from B to C on a bearing of 110 degrees. 1. calculate the distance AC 2. Find the bearing of C from A
  33. chemistry help

    ok so i need to find how many atoms make up the earth. the average atomic mass of the atoms is 14g/mol. avogadro's number gives the number of atoms in a mole. so what atom do i take?? carbon or something??
  34. Pyhsics

    The weight of the atmosphere above 1 m2{\rm m}^{2} of Earth's surface is about 100,000 N{\rm N}. Density, of course, becomes less with altitude. But suppose the density of air were a constant 1.2 kg/m3{\rm kg}/{\rm m}^{3}. Calculate where the top of the
  35. physics

    A police car is traveling at a constant velocity 18 m/s north, when a car zooms by at a constant velocity 42 m/s due north. After a reaction time of 0.8 s the police car pursue the speeder with an acceleration of 5 m/s2. How long (in s) does it take for
  36. Social Studies

    Name all the south-East states Thank you for using the Jiskha Homework Help Forum. Look in any Atlas of the U.S. and you will find the southeast states: 1. http://geology.er.usgs.gov/states/southeast.html 2. (Broken Link Removed) 3.
  37. physics

    On the Apollo 14 mission to the moon, astronaut Alan Shepard hit a golf ball with a golf club improvised from a tool. The free-fall acceleration on the moon is 1/6 of its value on earth. Suppose he hit the ball with a speed of 25 m/s at an angle 24 ∘
  38. Social Studies

    Out of the experience of an extraordinary human disaster that lasted too long, must be born a society of which all humanity will be proud. The time for the healing of the wounds has come. The moment to bridge the chasms that divide us has come. Never,
  39. physics

    A 6000kg truck travelling north at 5m/s collides with a 4000kg truck moving west at 15m/s,if the two trucks remain locked together after collision,find (a)with what speed and in what direction do they move immediately after collision?(b)what is the lost of
  40. Physics

    An 85 kg jogger is heading due east at a speed of 1.7 m/s. A 55 kg jogger is heading 40° north of east at a speed of 3.4 m/s. Find the magnitude and direction of the sum of momenta of the two joggers.
  41. physics

    An 85-kg jogger is heading due east at a speed of 2.0 m/s. A 55-kg jogger is heading 22° north of east at a speed of 2.7 m/s. Find the magnitude and direction of the sum of momenta of the two joggers.
  42. physics

    It has been suggested, and not facetiously, that life might have originated on Mars and been carried to Earth when a meteor hit Mars and blasted pieces of rock (perhaps containing primitive life) free of the surface. Astronomers know that many Martian
  43. Math

    Ryan left the science museum and drove south. Gabriella left three hours later driving 42 km/h faster in an effort to catch up to him. After two hours Gabriella finally caught up. Find Ryan's average speed! My teacher says we have to show all of the work
  44. english

    Identify the sentence that is correctly punctuated. a. We stopped at several places during our drive up the East Coast: Savannah, Georgia, Charleston, South Carolina, Trenton, New Jersey, and Allentown, Pennsylvania. b. We stopped at several places during
  45. physics 2

    - Matter is made of charged particles - The motion of charged particles produces electromagnetic waves - Since light is an electromagnetic wave, the color of a substance is ultimately related to the way that charged particles in that substance can move
  46. physics 2

    - Matter is made of charged particles - The motion of charged particles produces electromagnetic waves - Since light is an electromagnetic wave, the color of a substance is ultimately related to the way that charged particles in that substance can move
  47. Science

    Does the Earth and moon have large molten core or only 1 of them does? I think the Earth only has large molten core
  48. Algebra 2

    A commercial freight carrier is flying at a constant speed of 400 mi/h and is traveling 4 miles east for every 3 miles north. A private plane is observed to be 210 miles east of the commercial carrier, traveling 12 miles north for every 5 miles west. a. If
  49. ENGLISH 2

    2. In at least three sentences, explain if ethos, pathos and logos have each been effectively established in this speech. Pearson’s address on the inauguration of the national flag of Canada: On September 5, 1945 an Order-in-Council was passed declaring
  50. Grammar and Composition

    What is a good synonym for the word 'lief'. The meaning of this word is gladly or willingly. As in: I would as lief go south as not. I can't find a synonym for the word, and I don't want to use the words in the meaning as the synonyms.
  51. Math

    The acceleration due to gravity is inversely proportional to the square of the distance from the centre of Earth. The acceleration due to gravity for a satellite orbiting 7000 km above the centre of Earth is 8.2 m/s^2. a) write a formula for this
  52. math

    The radius of the earth is approximately 3950 miles. The radius of Jupiter is approximately 44,400 miles. Since the radius of Jupiter is more than 11 times that of the earth, which comes closest to the volume of Jupiter ?
  53. tangential velocity physics

    find the tangential velocity of earth and moon
  54. Geography

    Did I answer these correctly? Q. Continent southeast of North America A. South America,Africa Q.How far is Panama City, Panama from San Salvador, El Salvador? A. 659 miles Q. Most of Cuba has an elevation of A. 0 to 500 feet above sea level Q. The
  55. AP Physics

    An object has a mass of 80 kg on earth. the acceleration of gravity on Mars is about 1/4 of the acceleration of gravity on Earth. What is the weight of the object on Mars?
  56. Physics

    The gravitational constant for Earth is gE = 9.8m/s2. The gravitational constant for the planet Mongo is 20 m/s2. If an object has a mass of 10 kg on earth, what is its mass on Mongo?
  57. PHYSICS

    assume you have a mass of 100 kg on earth. on the moon, where the gravitation of the moon is 1/6 gravitation of the earth, what is your mass on the moon and what is your weight on the moon
  58. math nid this asap tyy

    (Velocity and acceleration.) The acceleration of gravity on the surface of the Moon is a = 1.6 m/s2, as opposed to g = 9.8 m/s2 on Earth. An Olympic high-jumper can jump to about 2.35 m on the surface of the Earth. What height could an Olympic high-jumper
  59. physics

    Jessica's weight is 540 Newtons. According to the Third Law, if the Earth pulls on Jessica with a force of 540 N, then Jessica pulls on the Earth with a force of 540 Newtons that acts in the opposite direction. However, if Jessica stumbles while
  60. physics

    Jessica's weight is 540 newtons. According to the Third Law, if the Earth pulls on Jessica with a force of 540 N, then Jessica pulls on the Earth with a force of 540 newtons that acts in the opposite direction. However, if Jessica stumbles while
  61. Physics

    A 23.7 kg child, with a 4.35 kg backpack on his back, first stands on a sidewalk and then jumps up into the air. Find the net force (positive up/negative down) on Earth due to the child when the child is (c) standing still and (d) in the air.
  62. algebra

    You may have to convert from feet to miles several times in this assignment. You can use 1 mile = 5,280 feet for your conversions. 1. Many people know that the weight of an object varies on different planets, but did you know that the weight of an object
  63. Solar system

    According to the theory of gravitation, the earth must be continually “falling” toward the sun. If this is true, why does the average distance between earth and sun not grow smaller? Without gravity, the Earth would go in a straight line. It falls
  64. Math

    Earth orbits the sun in an elliptical pattern. the equation of earths path is (x+2.5)/22350.25 + y^2/22344=1 where the measurements represent millions of kilometers. The sun is located at the focus (0,0). In january, earth id located at one vertices which
  65. Physics

    Climbing to the top of Mount Everest is hard. But, it's slightly easier than you might think as people weigh less as they climb to the top. Let WE be a person's weight on top of Mount Everest and WS be their weight at sea level. What is the value of
  66. Physics

    It can be shown that for a uniform sphere the force of gravity at a point inside the sphere depends only on the mass closer to the center than that point. The net force of gravity due to points outside the radius of the point cancels. How far would you
  67. physics

    a dog walks 28 steps north and then walks 55 steps west. if the daog walks back to the starting point in a straight line, how many steps will the dog take? find the magnitude of the net displacement
  68. ss

    5.What did the South do with the cotton during the war
  69. S.S.

    how many mountains are in south america
  70. geography

    What is Farthest south?
  71. physics

    I need some help and I was wondering if you guys could give me some hints and stuff. thanks a lot!! Question 1 A force causes a certain acceleration. What acceleration would half of the original force cause? a. The same amount b. 1/2 times c. 4 times d. 2
  72. calculus

    Carbon-14 is a radioactive substance produced in the Earth's atmosphere and then absorbed by plants and animals on the surface of the earth. It has a half-life (the time it takes for half the amount of a sample to decay) of approximately 5730 years. Using
  73. science

    Using various telescopes, astronomers discovered a giant star that is 100 times larger than the Sun, and is very hot. It is blue-white in color. Why does the Sun appear brighter than this larger star when viewed from Earth? - The Sun is older than the
  74. science

    Using various telescopes, astronomers discovered a giant star that is 100 times larger than the Sun, and is very hot. It is blue-white in color. Why does the Sun appear brighter than this larger star when viewed from Earth? - The Sun is older than the
  75. calculus

    One bicycle is east of an intersection , and it is travelling towards the intersection of 9 miles per hour. at the same time a second bicycle is south of the intersection , and it is travelling away from the intersection at the rate of 10 miles per hour.
  76. chemistry

    TO DR.BOB222 hi i have a question. It's regarding a electrolytic cells. This lab has already been posted but i wanted to show you what i have so maybe you can check it for me. question: what is the mass of tin produced? what is the theoretical mass of tin
  77. Physics

    Relative to the ground, a car has a velocity of 14.8 m/s, directed due north. Relative to this car, a truck has a velocity of 24.0 m/s, directed 52.0° north of east. What is the magnitude of the truck's velocity relative to the ground?
  78. physics

    Relative to the ground, a car has a velocity of 14.4 m/s, directed due north. Relative to this car, a truck has a velocity of 24.8 m/s, directed 52.0° north of east. What is the magnitude of the truck's velocity relative to the ground?
  79. physics

    Vector A points to the north and has length A. Vector B points to the east and has length 2.5A. Find the direction of C= 7.4A+B Express your answer as an angle relative to east.
  80. PHYSICS

    This is the same question as last time. "A plane is flying 25 degrees north of west at 190 km/h and encounters a wind from 15 degrees north of east at 45 km/h. What is the planes new velocity with respect to the ground in standard position?" Elena kindly
  81. history

    How did the Plessy v. Ferguson decision affect racial relations in the South? a. it forced white and African Americans to sue the same public facilities b. it allowed segregation to continue legally c. it improved the qualify of African American facilities
  82. physics

    The distance from earth to the center of the galaxy is about 22500 ly (1 ly = 1 light-year = 9.47 1015 m), as measured by an earth-based observer. A spaceship is to make this journey at a speed of 0.9995c. According to a clock on board the spaceship, how
  83. 8th Grade History

    How did Jefferson Davis's failure as a leader illustrate a key weakness of the Confederacy? A. He failed to secure enough funds for the war, which illustrates the Confederacy's bureaucratic corruption. B. He failed to secure enough trained generals for the
  84. English

    This topic is deleting satistical data and examples. original material Water is an important part of the earth.In fact, water is the reason human beings live on the planet.Water is everywhere.It is in the atmosphere, the air that people breathe. it is in
  85. math

    A year on Mars is 686 Earth Days. (1) Whicch is longer, a year on Mars or a year on Earth. (2) By how many weeks is it longer? Please explain how you got the answer. My answer was 82 1/2 weeks longers
  86. volume,mass,weight

    if you travelled to a planet that had twice the force of gravity of earth and you have taken a small mass that is 1kg what is the mass weight and volume of the 1kg object on the new planet compared to earth
  87. Physics

    If the moon were twice as massive, would the attractive force of Earth on the moon be twice as large? Yes No What about the attractive force of the moon on Earth? Yes No
  88. Social Studies

    1. what freedom was guaranteed in the South Carolina constitution written in 1778? A. freedom of assembly*** B. freedom of press C. freedom of religion D. freedom of speech 2. A patriot ____ the revolutionary war, and a loyalist ___ the war. A. supported;
  89. ELA

    The River 1. I sit on the bank in my special place, 2. Feel the breeze that lifts my hair, 3. And watch the ripples run across the river. 4. It is so peaceful here. 5. Deep enough to justify a fishing pole, 6. Quiet enough for my every thought, 7. The
  90. Social Studies (please check Ms. Sue)

    1. Why were interstate highways initially built? a. to accommodate the increasing number of automobiles b. to make it easier for U.S. citizens to travel from state to state c. to enable the quick movement of troops in case of a nuclear attack*** d. to
  91. Math And Physics

    Law of Gravitation- Find an expression for the magnitude of the initial velocity that a projectile must possess in order to leave the earth when air friction is neglected. The gravitational constant for g is, G = 6.67428*10^-11 m^3 Kg^-1 s^-2 Please answer
  92. Math BOBPURSLEY HELP HELP HELP HELP

    Law of Gravitation- Find an expression for the magnitude of the initial velocity that a projectile must possess in order to leave the earth when air friction is neglected. The gravitational constant for g is, G = 6.67428*10^-11 m^3 Kg^-1 s^-2 Please answer
  93. World History

    Which statement supports the claim that the political philosophy of John Locke was as revolutionary as the scientific revolution of Copernicus? *****a. Just as Copernicus replaced the Earth with the Sun at the center of the solar system, Locke replaced the
  94. Physics

    A satellite is put into an orbit at a distance from the center of the Earth equal to twice the distance from the center of the Earth to the surface. If the satellite had a weight at the surface of 4000 N, what is the force of gravity (weight) of the
  95. Physics

    Vector a has a magnitude of 5 m and is directed esast. Vector b has a magnitude of 4 m and is directed 35 degrees west of north. What are the (a) magnitude and (b) the direction of vector a + vector b? What are the (c)magnitude and (e)direction of vector b
  96. beast mode question

    Beastmode Question You see me twice a minute, thrice an hour and geometrically equal to the time elapsed. If the sun rise at x m/sec and the cloud run through the sky at y m/sec, find the maximum RADIUS OF THE EARTH.
  97. math

    Q2. An agriculture field is rectangular,with dimensions 100m by 42m.A 20m deep well of diameter 14m is dug in acorner of the field and the earth taken out is spread evenly over the remaining part of the field. Find the increase in the level of the field.
  98. business math

    Scientists estimate forests are being destroyed on Earth's surface at a rate of 149 acres per minute. Use unit ratios to find the number of acres to the nearest thousand being destroyed each day. I am completely stumped on this one. HELP!
  99. Physics

    A400 N child is swing that is attached tow ropes 2m long , find the gravitational potential energy of the child-earth system relative to the red line level when ropes make an angle with the vertical .
  100. electron configuration shorthand method?

    I missed school today so the hw is a bit confusing and I have a quiz on this tmr. For example I have Br which has 35 electrons. [Ar]_______ and then what do I do? How do I know what to put next? how would you do Phosphorus? thanks!