1. physics

    A police car is traveling at a velocity of 19.0 m/s due north, when a car zooms by at a constant velocity of 49.0 m/s due north. After a reaction time 0.600 s the policeman begins to pursue the speeder with an acceleration of 6.00 m/s^2. Including the
  2. Physics

    A police car is traveling at a velocity of 15.0 m/s due north, when a car zooms by at a constant velocity of 40.0 m/s due north. After a reaction time 0.500 s the policeman begins to pursue the speeder with an acceleration of 6.00 m/s^2. Including the
  3. physics

    A police car is traveling at a velocity of 15.0 m/s due north, when a car zooms by at a constant velocity of 45.0 m/s due north. After a reaction time 0.700 s the policeman begins to pursue the speeder with an acceleration of 3.00 m/s^2. Including the
  4. Physics

    A police car is traveling at a velocity of 20.0 m/s due north, when a car zooms by at a constant velocity of 44.0 m/s due north. After a reaction time 0.700 s the policeman begins to pursue the speeder with an acceleration of 6.00 m/s^2. Including the
  5. Math

    Hint for this assignment: Pay attention to the units of measure. You may have to convert from feet to miles 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
  6. physics

    At the surface of Jupiter's moon Io, the acceleration due to gravity is 1.81 . A watermelon has a weight of 43.0 at the surface of the earth. In this problem, use 9.81 for the acceleration due to gravity on earth
  7. physics

    Two satellites are monitored as they orbit the earth,satellites Y is foure times as far from earth's centre as is satellite X. IF the period of revolution of satellite X is T. WHAT IS THE PERIOD OF REVOLUTION OF OF Y?
  8. Science Physics

    An object weighs 12 N on earth. When it is brought to Mars, it has a weight of 4.8 N. What is the acceleration due to gravity on Mars? (Taking the acceleration due to gravity on earth is 10 m/s²)
  9. algebra

    1.) The volume of a rectangular box is 64 ft3. If the width is 3 times longer than the height, and the length is 9 times longer than the height, find the dimensions of the box. Define your variables then show all work using the equation editor. Write a
  10. chemestry

    Balance th following equation in acid Solutiong and determind if it is spontaneous under standard conditions. NO3^-1 + Sn^+2 ---> NO + Sn^+4 balanced directed to first post. You need to calculate the E value to determine if it is spontaneous or not. Please
  11. physics

    An astronaut in full gear has a weight of 2900 N on Earth. Jupiter; weight on planet relative to earth is 2.53 and weight of a 150-lb person is 380. How much will the astronaut weigh on the Jupiter? W_{Jupiter} =________________ N Neptune; weight on planet
  12. English

    Thank you very much for your corrections. I still have a few alternatives for you to check. 1) The demand for new clothes created the necessity (better: caused the development of new machinery?) to invent machinery for cloth-making. 2) New factories were
  13. Physics

    A spring scale being used to measure the weight of an object reads 17.1 N when it is used on earth. The spring stretches 4.40 cm under the load. The same object is weighed on the moon, where gravitational acceleration is 1/6g Find the reading of the spring
  14. english help please!!

    Read the following excerpt from H.G. Wells' The War of the Worlds, and answer the question that follows: The planet Mars, I scarcely need remind the reader, revolves about the sun at a mean distance of 140,000,000 miles, and the light and heat it receives
  15. Chemistry

    Shown below are several options for the box notations of the ground state electron configuration of the following gas-phase species. Identify the correct electronic configuration. i. Al2− ii. Mn (a)Select the reason that best explains why the first
  16. History

    I have multiply questions and would appreciate if you could either tell me about it or send me a link to something, I've checked my history books and can't find nothing. Who didn't like Lincoln's 10% reconstruction plan? Did Lincoln's death impact or
  17. algebra

    A pilot heading his polane due north finds the actual direction of travel to be 5.2 NE. The planes's air speed is 315 mi/h, and the wind is from die west. Find the plane's ground speed and the velocity of the wind.
  18. trig

    a plane is flying with airspeed of 140 mph and heading 280 degrees. The wind currents are running at 20mph at 260 degrees clockwise from due north. Find the true course and ground speed of the plane.
  19. physics

    a woman walks 250 m in the direction 30 degree east of north,then 175 m directly east.A) using graphical methods,find her final displacement from the starting point.B) compare the magnitude of her displacement with the distance she walked.,
  20. english

    Please help if my answers are correct and let me know the correct answers below. thank you. Can we see (1) _____ the earth is a globe? Yes, we can. When we watch a ship that sails out to sea, we can see that the ship begins (2) _____. The bottom of the
  21. Physics

    Show that the total mechanical energy of a satellite (mass m) orbiting a distance r from the center of the Earth (mass M-e)is: -(1/2)*(G m M-e)/(r if U = 0 at r = infinity. Show that although friction causes the value of E (mechanical energy) to decrease
  22. Science

    If you are one mile off the beach in the Atlantic Ocean, how deep is the ocean? Thanks for your help. Which beach? Is it in Europe, North America, Africa, South America or Antarctica? We'll try to research your question if we know the exact location of
  23. chemistry

    1. Calcuate the distance(km) from the Earth to the Moon if it takes light 1.3 seconds to make the trip? 2. Saturn is about 1.2 billionkm from Earth. How long does it take light to travel that distance? (I was only given the wave equation, Max Plancks
  24. Physics

    A satellite has a mass of 101 kg and is located at 1.99x10^6 m above Earth's surface. (a) What is the potential energy of the satellite at this location? (b) What is the magnitude of the gravitational force on the satellite? for potential energy, I was
  25. Physics

    A satellite has a mass of 101 kg and is located at 1.99x10^6 m above Earth's surface. (a) What is the potential energy of the satellite at this location? (b) What is the magnitude of the gravitational force on the satellite? for potential energy, I was
  26. geometry

    the area of the rectangular playground enclosure at South School is 500 square meters. The length of the playground is 5 meters longer than the width. Find the dimensions of the playground, in meters.
  27. physics

    A spring scale being used to measure the weight of an object reads 12.8 N when it is used on earth. The spring stretches 4.95 cm under the load. The same object is weighed on the moon, where gravitational acceleration is 1/6g. Find the reading of the
  28. Social Studies

    One reason for the difference between average temperatures in Rome when in Jan. the average temperature is 11 degrees Celsius and July average degree is 30 degree Celsius is: The amount of carbon dioxide present in the atmosphere The tilt of the Earth of
  29. Pre-Calculus

    Point B is 12 km north of point A. Point C is 9 km from point B on a bearing of 060°. Find the distance from A to C.
  30. physics

    The driver of a 1024 kg truck traveling 32.6 m/s North on I-77 has to make a sudden stop. If it requires a distance of 57.1 m for the truck to stop, use conservation of energy to find the net force acting on the truck.
  31. physics

    The driver of a 1024 kg truck traveling 32.6 m/s North on I-77 has to make a sudden stop. If it requires a distance of 57.1 m for the truck to stop, use conservation of energy to find the net force acting on the truck.
  32. history

    "Upon what principle is it that the slaves shall be computed in the representation? Are they men? Then make them citizens and let them vote. Are they property? Why then is no other property included" - Gouverneur Morris What is the meaning of this quote?
  33. Chemistry

    Here are the effective nuclear charges, Zeff, for the valence electrons of four different atoms. 1.30, 1.95, 2.60, 3.25 In order, these values could belong to what list of elements? Sr, Ca, Mg, Be Be, Mg, Ca, Sr C, B, Be, Li (or) Li, Be, B, C Here are the
  34. Geometry

    A city has a scale model of the solar system nearly 6 km long. The model's scale is 1 km : 1 billion km. a. Earth is 150,000,000 km from the Sun. How many meters apart are Earth and the Sun in the model?
  35. Physics

    At the surface of a certain planet, the gravitational acceleration g has a magnitude of 12.0 m/s^2. A 21.0-kg brass bell is transported to this planet. What is (a) the mass of the brass ball on the Earth and on the planet, and (b) the weight of the brass
  36. Geometry

    The radius of Jupiter is approximately 44,423 miles, and the radius of the Earth is approximately 3,960 miles. How many times larger is the volume of Jupiter than the volume of the Earth? Round your answer to the nearest whole number.
  37. science

    the free-fall acceleration on the surface of the moon is appromimately 1/6 of the free-fall acceleration on the surface of earth. compare the period of a pendumlum on earth with that of an identical pendulum set in motion on the moon
  38. History

    Can you please explain to me what this means. This is what I think that it means. Jackson did not agree with states having any right to nullify a federal law. An ordiance was passed by the people of South Carolina because they felt that the Tariffs of 1828
  39. Physics

    NASA lost contact with Pioneer 10 on January 22, 2003. How far in meters was it from the sun on that date? Pioneer 10 was traveling at 12.24 km/s relative to the sun. Calculate the position of Pioneer 10 as of January 2009 relative to the sun. Pioneer is
  40. south carolina history

    Which describes Hurricane Hugo’s impact on South Carolina’s economy? ~Hugo caused billions of dollars in damage but rebuilding efforts kept the state’s economy growing. ~The hurricane destroyed much of the coast and caused the state to suffer an
  41. history

    Which describes Hurricane Hugo’s impact on South Carolina’s economy? ~Hugo caused billions of dollars in damage but rebuilding efforts kept the state’s economy growing. ~The hurricane destroyed much of the coast and caused the state to suffer an
  42. Physics

    A person walks 10.4 degrees north of east for 4.19 km. Another person walks due north, then due east to arrive at the same location. How far would this person walk due east? Answer in units of km
  43. PHYSICS

    A person walks 10.4 degrees north of east for 4.19 km. Another person walks due north, then due east to arrive at the same location. How far would this person walk due east? Answer in units of km
  44. physics vectors

    A plane flies from base camp to Lake A, 260 km away in the direction 20.0° north of east. After dropping off supplies it flies to Lake B, which is 150 km at 30.0° west of north from Lake A. Graphically determine the distance and direction from Lake B to
  45. physics

    A plane flies from base camp to Lake A, 260 km away in the direction 20.0° north of east. After dropping off supplies it flies to Lake B, which is 150 km at 30.0° west of north from Lake A. Graphically determine the distance and direction from Lake B to
  46. oceanography

    1. How much of the total water at earth's surface is fresh water? 2. Of all the freshwater at the earth's surface, what percent is found as ice and glaciers? 3. What percent of all freshwater is groundwater? 4. What percent of the rainfall that falls on
  47. Phizzics....

    How does the weight of a Mars lander change as it travels from Earth to Mars? Does the weight ever equal zero? Does the mass of the lander change? Explain your answer. (Hint: restrict your analysis to a system consisting of Earth, Mars and lander.)
  48. Astronomy

    For this question assume the moon is 110 of its diameter away from the Earth. The largest apparent size of Mercury that we ever see in the sky is 1/150 the apparent diameter of the Moon. The diameter of Mercury is about 4900 km. What is the closest that
  49. maths

    An airplane is flying at an altitude of 10,000m. The pilot sees two ships A and B. Ship A is due south of P and 22.5km away (in a direct line).Likewise ship B is due East and 40.8km from P. Find the distance between the two ships.
  50. algebra

    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 ryans average speed
  51. math

    ryan left the science museum and drove south gabriel left three hours later driving 42mph faster in s effort to catch up. after 2 hours gabriel finally caught up. find ryans speed
  52. physics

    if a ship moving to South and wind is flowing due West(at given velocities),we can find the angle by which the ship is deviated.Does here the momenta of wind and ship matter?If it had been water at same velocity instead of wind, what would have happened?
  53. physics..(HELP ME WITH MY DOUBTS)

    if a ship moving to South and wind is flowing due West(at given velocities),we can find the angle by which the ship is deviated.Does here momenta of wind and ship matters?If it had been water at same velocity instead of wind, what would have happened?....
  54. english

    I need to find rhetorical devices 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 the Red Ensign to be Canada's National Flag pending a decision of the
  55. Science

    The words to use are: crust, moving, lithosphere, asthenosphere, upper mantle, volcanoes, semisolid The ___1___, which includes the ___2___ and part of the ___3___, is divided into plates that carry all of Earth's lands and oceans. These plates float on a
  56. APChem

    "Part A: Most of the transition metals form brightly colored ionic substances. Which elements located in the first row transition metals cannot form ionic compounds? Explain. Part B: Explain why representative metals do not form colored compounds." I am
  57. science

    The mass of the girl in earth is 24kg. What is her mass and weight in moon if the moon's gravity is 1/6 of the earth' gravity?
  58. Maths Algebra

    The diameter of Sun is (1.4 ×10^8)m and the diameter of Earth is (1.2742×10^4)m . Show that the diameter of sun is nearly 100 times the diameter of Earth.
  59. physics

    the gravity that sun has on the moon is about 2 times more than the gravity from earth so why doesn't moon run away from earth to sun?
  60. math,algebra

    How do I even write an equation for this problem all i need someone to show me how to get an equation so i can solve it. It is estimated that the Earth is losing 4000 species of plants and animals every year. If S represents the number of species living
  61. Science

    Do you know how big the Sun is? The Sun is 400 times as big as the Moon and 400 times as far away. The Moon: 2.5mm diameter a) How big would the Sun be if the Moon were the size shown above? b) The Sun is actually about 865,000 miles in diameter, so 1 cm
  62. History

    The American revolution began one shots were fired at blank soon after the British and Americans met again at blank where they learned at the war would be long and bloody the continental army and blank were no match against a large number of British
  63. physics

    On a distant planet, golf is just as popular as it is on earth. A golfer tees off and drives the ball 4.9 times as far as he would have on earth, given the same velocities on both planets. The ball is launched at a speed of 54 m/s at an angle of 42° above
  64. ga history

    1. which economic activities are most dependent on georgia's climate? a lumber and mining b imports and exports c agriculture and tourism d transportation and telecommunications 5. Metropolitan Atlanta's rapid growth has proven to be a major strain on the
  65. Physics

    the wind blows with a force of 425N north on a sail boat, while the water exerts a force of 325N west on the sailboat. Find the magnitude and direction of the net external force on the sailboat.
  66. Science

    So I need help with a lab, I'm not looking for answers, I want to know if my answers make sense, so this is the pre lab introduction: In a series circuit, electrons travel along a single pathway. The movement of the electrons through the circuit produces
  67. Physics

    Find the magnitude of the gravitational force a 65.4 kg person would experience while standing on the surface of Earth with a mass of 5.98 × 1024 kg and a radius of 6.37 × 106 m. The universal gravitational constant is 6.673 × 10−11 N · m2/kg2.
  68. College Algebra

    The population of the Earth is approximately 6 billion people and is growing at an annual rate of 1.9%. Assuming a Malthusian growth model, find the world population in 45 years. (Round your answer to one decimal place.)
  69. 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.
  70. algebra

    Write and solve an inequality to find the approximate circumference of Earth using the following information - the 4 million miles of public roads in the U.S. would: Reach to the moon and back more than eight times, circle the globe more than 157 times
  71. Physics

    If the gravitational force on you is 670N on the earth, how strong is the gravitational force on you on the surface of a neutron star that has the same mass as our sun and a diameter of 20.0km ? Take the mass of the sun to be ms = 1.99×1030kg , the
  72. Science

    I combine with two oxygen atoms to make sand. I have four valence electrons, Whar element am I?
  73. Chemistry

    The element in the period 2 group 6 gains/ loses ______ electrons to become a cation/ anion?
  74. Gen Chem

    What is n, the number of moles of electrons transferred, in the following reaction? 2 MnO4-(aq) + 16 H+(aq) + 10 Cl-(aq) ===> 2 Mn2+(aq) + 5 Cl2(g) + 8 H2O(l).
  75. Chemistry

    If your body develops a charge of -17 (microcoulombs), how many excess electrons has it acquired, and what is their collective mass?
  76. Physics

    Two spherical objects with a mass of 7.60 kg each are placed at a distance of 2.93 m apart. How many electrons need to leave each object so that the net force between them becomes zero?
  77. science

    Two electrons are fiXed 2 cm apart .another eleCtron is shot from infinity and stops midway between the two .what is the initial speed?
  78. ap chem

    in a sigma antibonding orbital where are the electrons most likly to be found in relation to the nuclei in a bond?
  79. Chemistry

    how many electrons pairs surround an atom of boron (B,element 5) bonded in the compound BCI3?
  80. BIOCHEM

    what are the problems created by using molecular oxygen as a recipient of the electrons from the oxidation of carbon compounds.
  81. chemistry

    how many electrons are transfered in one atom of Mn in the reaction?MnO2+4HCl=MnCl2+2H2O+Cl2
  82. chemistry

    In diatomic molecules of elements, the electronegativites of the two atoms are _________, so the electrons are shared ___________.
  83. chemistry

    WOuld you expect each of the following atoms to gain or lose electrons when forming ions? What ion is most likely in each case? a. Na b. Sr c. P d. Ba
  84. Chemistry

    In the ground-state electron configuration of Fe^{3+}, how many unpaired electrons are present? An explanation would be great, thanks.
  85. Science

    Which element has 6 energy levels and 7 valence electrons? Astatine (At) Polonium (Po) Seaborgium (Sg) Rhenium (Re)
  86. Physical science

    Why is it easy for a magnesIum(mg number 12) To lose 2 electrons. Is it because the nuclear charge of the mg atom is relatively weak?
  87. Physics

    Two spherical objects with a mass of 2.88 kg each are placed at a distance of 2.12 m apart. How many electrons need to leave each object so that the net force between them becomes zero?
  88. chemistry

    Examine the unbalanced electrolytic reaction. Li+(aq) + Zn(s) → Li(s) + Zn2+(aq) How many electrons are transferred in the balanced equation? 4 1 2 3
  89. science

    what is the correct number of protons, neutrons and electrons in a neutral Cadmium-112 atom?
  90. Chemistry

    What is the maximum number of electrons in an atom that can have the following quantum numbers? n= 4 ml= -3 ms= +1/2 How would you figure that out given those information? What's the process of that?
  91. Chemistry

    How does BF4^- make tetrahedral structure. Because B have 3 outermost electrons. It may combine with three fluorine. But how is it combining with 4?
  92. chemistry

    A cell, transferred 0.146 mol of electrons with a constant current of 1.24 A. How long, in hours, did this take?
  93. Science

    How does the movement of electrons and protons create large amounts of energy in oxidative phosphorylation?
  94. ap chem

    All the electrons of this element are spin-paired. Carbon Nitrogen Oxygen Flourine Neon
  95. chemistry

    Calculate the current required to transfer 0.015 mols of electrons in a time of 20 min
  96. Science

    Atoms share electrons or donates and accepts them to A. bond B. become stable C. to gain mass D. both A and B I think it is C
  97. chemistry

    How many electrons are in the outermost principal energy level of an atom of nitrogen in the ground state?
  98. chemistry

    Predict Zeff for the outermost electrons in the Rb atom based on the calculations for Na and K using Slater's rules.
  99. science

    Two electrons are fiXed 2 cm apart .another eleCtron is shot from infinity and stops midway between the two .what is the initial speed?
  100. science

    Two electrons are fiXed 2 cm apart .another eleCtron is shot from infinity and stops midway between the two .what is the initial speed?