1. Chemistry

    According to the kinetic-molecular theory, gases are highly compressible because the particles of they consist: a. lose energy when they collide with each other b. are very apart from each other c. experience a strong force of attraction d. experience a

    asked by Ana on April 5, 2010
  2. Physics

    *I am lost on a bunch of different problems, and this is one of them. Please note that I am NOT asking for final answers, just some guidance so that I can figure out how to do the problem!!! I know that a lot of times on this site it is commented that we

    asked by Justin on October 8, 2006
  3. ENGLISH!!!!!

    Candy's dog represents Lennie and the fact that the dog was shot foreshadows the end of the book when Lennie is about to get shot. In the sentence above, does the part that says "...foreshadows the end of the book when Lennie is about to get shot." does it

    asked by HAPPY FACE :) on October 20, 2010
  4. physics

    Design a carnival ride on which standing passengers are pressed against the inside curved wall of a rotating vertical cylinder. It is to turn at most at 1/3 revolution per second. Assuming a minimum coefficient of friction of 0.70 between clothing and

    asked by Anonymous on December 22, 2014
  5. AP Physics b

    Design a carnival ride on which standing passengers are pressed against the inside curved wall of a rotating vertical cylinder. It is to turn at most at 1/7 revolution per second. Assuming a minimum coefficient of friction of 0.10 between clothing and

    asked by gaston on November 3, 2011
  6. Bassick High School

    Vivian is walking to the hairdresser's at 1.3 m/s when she glances at her watch and realizes that she is going to be late for her appointment. Vivian gradually quickens her pace at a rate of 0.090 m/s2(squared) What is Vivians speed after 10.0s? At this

    asked by Karina on September 7, 2010
  7. physics

    A freely running motor rests on a thick rubber pad to reduce vibration. The motor sinks h=10 cm into the pad. Estimate the rotational speed in RPM (revolutions per minute) at which the motor will exhibit the largest vertical vibration.

    asked by kjhgkjhgkjhg on April 29, 2013
  8. physics

    A freely running motor rests on a thick rubber pad to reduce vibration. The motor sinks h=10 cm into the pad. Estimate the rotational speed in RPM (revolutions per minute) at which the motor will exhibit the largest vertical vibration.

    asked by kjhgkjhgkjhg on April 29, 2013
  9. English

    1. When the dog saw me, he wagged his tail. 2. When he saw me, the dog wagged his tail. -------------------------- Which one is grammatical? Are both ok?

    asked by rfvv on August 26, 2016
  10. physics

    Find the speed at which Superman (mass=89.0 kg) must fly into a train (mass = 19564 kg) traveling at 65.0 km/hr to stop it. The system (train + Superman) must end up with zero momentum. With no external forces, Superman's initial momentum must be equal and

    asked by katie on February 20, 2008
  11. physics

    a hockey puck is given the initial speed of 10 m/s. If the coefficient of kinetic friction between the ice and puck is 0.10, how far will the puck slide before stopping?

    asked by ama on December 14, 2010
  12. Physics

    The speed of an automobile of mass 1600 kg increases uniformly from 20 m/s to 30 m/s. What is the increase in its kinetic potential? Given: m = 1600 kg V = 10 m/s KE = 1/2 m v^2 KE = 1/2 (1600)(10)^2 KE = 80,000 J Is this right?

    asked by Priscilla on January 4, 2010
  13. physics

    A car of mass m = 1635 kg is pushed off a cliff of height h = 23 m. If the car lands a distance of 9 m from the base of the cliff, what was the kinetic energy of the car the instant after it left the cliff?

    asked by Dani on September 28, 2012
  14. Energy (physics)

    The wound spring of a clock would possess the same potential as kinetic energy. I am I correct in that statement. No. The wound spring has PE. Now what is this writing of KE? What is moving? how is it connected or related to the wound spring?

    asked by tatiana on November 5, 2006
  15. Physics

    In a machine a cylinder with a mass of 80.0 g is pushed down into a hole with a spring at the bottom as shown in Figure 1. When the spring is uncompressed the cylinder rests on top of it with its end just at the entrance to the hole. The cylinder is pushed

    asked by Hermans on November 23, 2015
  16. Physics

    In a machine a cylinder with a mass of 80.0 g is pushed down into a hole with a spring at the bottom as shown in Figure 1. When the spring is uncompressed the cylinder rests on top of it with its end just at the entrance to the hole. The cylinder is pushed

    asked by Anonymous on November 23, 2015
  17. Physics

    A wooden block is moving on a rough level surface. It originally has 25J of kinetic energy. If the friction force acting on it is a constant 1N how far will it slide before comming to a stop? KE=F_f 1/2mv^2=F_n (meu) but the problem i run into is that meu

    asked by Andrea on October 16, 2007
  18. Physics

    I have 3 different questions. 1) Calculate the coefficient of kinetic friction if it takes a force of 64 Newtons to keep a 54 kilogram box of books sliding across any icy surface at a uniform speed. 2) A car weighing 14,000 Newtons rests on a 20.0 degree

    asked by Dorothy on October 6, 2010
  19. Physics

    A racket exerted an average force of 152.0 N on a ball initially at rest. If the ball has a mass of 0.070 kg and was in contact with the racket for 0.030 s, what was the kinetic energy of the ball as it left the racket?

    asked by Maria on April 30, 2015
  20. physics

    A stone of mass 0.55 kilograms is released and falls to the ground. Measurements show that the stone has a kinetic energy of 9.8 joules at the point of impact with the ground. What is the stone's velocity when it hits the ground?

    asked by Anonymous on March 18, 2013
  21. Art

    Creativity has allowed or innovation for many industries. How has creativity affected the energy industry? It has allowed for the same traditional energy sources to continue being used for generations. It has allowed for new energy source to be discovered

    asked by LOVE on August 31, 2016
  22. Art

    Creativity has allowed or innovation for many industries. How has creativity affected the energy industry? It has allowed for the same traditional energy sources to continue being used for generations.(MY ANSWER) It has allowed for new energy source to be

    asked by LOVE on August 30, 2016
  23. Physics - Springs

    a 10.0 g bullet is fired into a 1.0 kg block initially at rest on a rough surface and connected to a spring with k = 200 N/m. Immediately following the collision the block has a speed of 2.0 m/s. The coefficient of friction between the ground and the block

    asked by Anonymous on November 21, 2010
  24. Fast Physics Help

    I have an image but I can't post it because it is a website. block 1 of mass m1 slides along an x-axis on a frictionless floor with speed of v1i=4.00 m/s. Then it undergoes a one dimentional elastic collision with stationary block 2 of mass m2=.500m1.

    asked by Krystal on December 8, 2006
  25. Chemistry - Equilibrium

    (h) If a catalyst was added to the reaction, which quantities would change? (Select all that apply.) - the potential energy of the products - the potential energy of the reactants - the potential energy of the activated complex -the activation energy for

    asked by Taylor on May 17, 2015
  26. Physics

    A hockey puck is given an initial speed of 6.7 m/s. If the coefficient of kinetic friction between the puck and the ice is 0.08, how far (in m) does the puck slide before coming to rest?

    asked by Amir on May 1, 2017
  27. Algebra

    In a football game, a running back ran for 5 and 7 yards on his last two runs. His total yardage for the whole game is 78 yards. Which expression shows how many yards the running back had before those two runs?\ PLEASE HELP I REALLY NEED THE ANSWER

    asked by PLEASE HELP on September 17, 2018
  28. Physics

    A 64.4-kg skateboarder starts out with a speed of 2.11 m/s. He does 81.6 J of work on himself by pushing with his feet against the ground. In addition, friction does -289 J of work on him. In both cases, the forces doing the work are non-conservative. The

    asked by P on December 5, 2012
  29. PHYSICS PLEASE HELP

    A 60.8-kg skateboarder starts out with a speed of 1.84 m/s. He does 90.8 J of work on himself by pushing with his feet against the ground. In addition, friction does -278 J of work on him. In both cases, the forces doing the work are non-conservative. The

    asked by KS on April 22, 2015
  30. PLEASE HELP

    A 60.8-kg skateboarder starts out with a speed of 1.84 m/s. He does 90.8 J of work on himself by pushing with his feet against the ground. In addition, friction does -278 J of work on him. In both cases, the forces doing the work are non-conservative. The

    asked by KS on April 22, 2015
  31. PHYSICS

    A 60.8-kg skateboarder starts out with a speed of 1.84 m/s. He does 90.8 J of work on himself by pushing with his feet against the ground. In addition, friction does -278 J of work on him. In both cases, the forces doing the work are non-conservative. The

    asked by KS on April 22, 2015
  32. physics

    A 64.2-kg skateboarder starts out with a speed of 2.21 m/s. He does 98.0 J of work on himself by pushing with his feet against the ground. In addition, friction does -276 J of work on him. In both cases, the forces doing the work are non-conservative. The

    asked by Cameron on January 11, 2017
  33. physics

    A 64.2-kg skateboarder starts out with a speed of 2.21 m/s. He does 98.0 J of work on himself by pushing with his feet against the ground. In addition, friction does -276 J of work on him. In both cases, the forces doing the work are non-conservative. The

    asked by Tyler on January 12, 2017
  34. Chemistry

    The temperature of a sample of neon is raised from 20 degrees C to 40 degrees C, the average kinetic energy of the neon atoms changes by a factor of? The answer is suppose to be 313/293, but I don't get how. My idea was since average KE = (3/2) kT then the

    asked by Unsure on January 7, 2009
  35. physics

    A bowling ball of mass 7.3 kg and radius 9.6 cm rolls without slipping down a lane at 3.4 m/s. Calculate its total kinetic energy. I tried this problem with the equation 3/4mv^2 but I did not get the correct answer, could I please get help with

    asked by Anonymous on March 25, 2010
  36. Physics

    An 9.00-cm-diameter, 400 sphere is released from rest at the top of a 1.90-m-long, 20.0 incline. It rolls, without slipping, to the bottom. A) What is the sphere's angular velocity at the bottom of the incline? B) WWhat fraction of its kinetic energy is

    asked by Dan on April 10, 2011
  37. Physics

    A model drag car is being accelerated along its track from rest by a motor with a force of 75N, but there is a drag force of 30N due to the track. What is the Kinetic energy after 2m of travel? A. 90J B. 150J C. 210J D. 60J

    asked by Anonymous on July 20, 2018
  38. Gabes

    Every year of a dog's life is worth 1 year of a human's life. If Rusty was a human, she would be twice the age of her owner, Mario. If Mario was a dog, he would be six years younger than Rusty. How old is Rusty?

    asked by Anna on August 24, 2007
  39. physics

    A net force of 1.6×10−15 N acts on an electron over a displacement of 7.1 cm, in the same direction as the net force. (a) What is the change in kinetic energy of the electron (joules)?

    asked by amanda on March 21, 2016
  40. Physical Science

    A pendulum has 343 J of kinetic energy at the lowest point in its swing. At the highest point in its swing, it has a height of 5 m. What is the pendulum's mass?

    asked by Allen on October 25, 2010
  41. physical science

    a 2.0 kg rock sits on the edge of a cliff 12m above the beach. The rock falls off the cliff. How much kinetic energy will it have just before it hits the beach?

    asked by Brad on November 22, 2010
  42. physics

    A 0.125 kg cart rolls along a metal track with a kinetic energy of 0.25 J. How high up an inclined metal track will the cart roll?

    asked by Ryley on March 4, 2012
  43. Physics

    For non-ideal oscillators (such as a real pendulum) energy is lost and the amplitude (which is the maximum displacement) is no longer constant but also decreases with time. How fast the energy lost is described by a TIME CONSTANT, τ = m/b. Typically after

    asked by Ike on January 31, 2014
  44. physics

    The caber toss is a traditional Scottish sport that involves hurling a caber, which is essentially a large piece of a tree: a caber is a 6 m long, 80 kg tree trunk. Large strong people hurl these and the goal is to get the caber to land as far away as

    asked by ayan on March 29, 2013
  45. Physics, Science

    A 26 kg block is connected to an empty 1 kg bucket by a cord running over a frictionless pulley. The coefficient of static friction between the table and the block is 0.435 and the coefficient of kinetic friction between the table and the block is 0.320.

    asked by Shae on October 3, 2010
  46. winterWx

    What is the average translational kinetic energy of nitrogen molecules at 1500 K, in the following units? (a) J (b) eV I already provided the formula for average KE in Joules, in an answer to a separate question of yours. average KE = (3/2) k T 1 eV =

    asked by Physics/Math on February 23, 2007
  47. Physics

    A cylinder ( I = 1/2 MR2), a sphere ( I = 2/5 MR2), and a hoop ( I = MR2) roll without slipping down the same incline, beginning from rest at the same height.  All three objects share the same radius and total mass.  Which object has the greatest

    asked by John on March 19, 2011
  48. math

    Maria ran in a 42 km marathon she covered the first half of the marathon from 0600 to 0715 hours and stopped and rest. She resumed running was able to cover the remaining distance from 0720 to 0935 hours. What was Maria's average speed for the entire

    asked by Jenibel on September 14, 2012
  49. physics!

    In a scene in an action movie, a stuntman jumps from the top of one building to the top of another building 4.0m away. After a running start, he leaps at an angle of 15 degrees with respect to the flat foor while traveling at a speed of 5.0 m/s. will he

    asked by emily on December 9, 2008
  50. physics

    two different masses have equal, non zero kinetic energies. the momentum of the smaller mass is? what is the magnitude of momentum of a 0.140 baseball traveling at 45.0m/s? a 2.00g bullet hits and becomes embedded in 5.00 kg wood block which is hanging

    asked by tina on February 25, 2009
  51. physics

    two different masses have equal, non zero kinetic energies. the momentum of the smaller mass is? what is the magnitude of momentum of a 0.140 baseball traveling at 45.0m/s? a 2.00g bullet hits and becomes embedded in 5.00 kg wood block which is hanging

    asked by tina on February 25, 2009
  52. Physics

    How does the conservation of mechanical energy explain why a planet in an elliptical orbit changes speed?

    asked by Anonymous on February 28, 2010
  53. calc

    Nutrition Ruff, Inc. makes dog food out of chicken and grain. Chicken has 10 grams of protein and 5 grams of fat per ounce, and grain has 2 grams of protein and 2 grams of fat per ounce. A bag of dog food must contain at least 224 grams of protein and at

    asked by liz on September 16, 2011
  54. physics help please!

    The motion of a piston in an auto engine is simple harmonic. The piston travels back and forth over a distance of 23 cm, and the piston has a mass of 1.7 kg. 2515 rpm 23 cm max speed of the piston 30.28757 m/s What is the maximum force acting on the piston

    asked by michelle on December 6, 2012
  55. physics

    A 60 kg skier with an initial speed of 12 m/s coasts up a 2.5 m high rise that makes a 35 degree angle with the horizontal. If the coefficient of friction between the skis and the snow is .08, find the speed of the skier when he reaches the top of the

    asked by Me on October 9, 2010
  56. physics

    A curious child finds a rope hanging vertically from the ceiling of a large storage hangar. The child grabs the rope and starts running in a circle. The length of the rope is 13.0m. When the child runs in a circle of radius 7.0m, the child is about to lose

    asked by sal on October 15, 2018
  57. Biology

    Which of the following would differ if you compared the sam reaction taking place with and without an enzyme? a. the chemical energy of the reactants**** b. the chemical energy of the products c. the energy required to start the reaction d. the overall

    asked by Anonymous on August 20, 2018
  58. physics

    A box weighing 87 lb is being pulled with a rope that exerts a force of 60. lb at an angle of 15 degrees with the horizontal. if the coefficient of kinetic friction is .35, what is the kinetic friction?

    asked by Christian on August 24, 2017
  59. physics

    A box weighing 87 lb is being pulled with a rope that exerts a force of 60. lb at an angle of 15 degrees with the horizontal. if the coefficient of kinetic friction is .35, what is the kinetic friction?

    asked by Christian on August 23, 2017
  60. PHYSICS

    Whats the difference between the formulas for kinetic and static friction. Kinetic: Ff= ukFn Static: Ff= usFn Are the 'f' and the 'n' the mass of the object? Are the 'k' and the 's' just the

    asked by Lena on April 16, 2009
  61. Science

    True/False - A generator that doubles the electrical energy from a wall outlet without any additional input of energy will work. - The total amount of energy in the universe is constant. thank you

    asked by Jake on November 21, 2008
  62. Science

    Identify the sources of energy used to power a cell phone and other energies that it can transform into. I put Electrical Energy and it can be transformed to heat,sound,light,and mechanical energy.

    asked by Rezu on April 2, 2012
  63. Math

    Jack has 99 hot dogs and 261 hot dog buns. He wants to put the same number of hot dogs and hot dog buns on each tray. What is the greatest number of trays Jack can use to accomplish this?

    asked by Hanna on February 27, 2010
  64. physics

    Which of the following is correct for the energy levels in an atomic system? Choose one answer. a. The energy value increases with the distance from the nucleus. b. The energy value decreases with the distance from the nucleus. c. The energy value remains

    asked by ashley --- HELP PLEASEE!!! on May 1, 2011
  65. Science

    Explain, with the help of an appropriate labelled sketch diagram, how a hydrogen atom, which has only one electron, has so many spectral lines. The diagram of the energy levels follows: --------------- --------------- --------------- -----------------

    asked by Adam on March 6, 2007
  66. physics

    A block of mass 3kg starts from rest and slides down a surface, which corresponds to a quarter of a circle of 1.6m radius. a) if the curved surface is smooth, calculate the speed of the block at the bottom. b) if the block 's speed at the bottom is 4m/s,

    asked by gourav on March 18, 2015
  67. Super quick english question

    Which sentence shows correct capitalization and use of end marks inside parentheses? I put your guitar (The dog keeps knocking it over) back in your room. I put your guitar (The dog keeps knocking it over.) back in your room. I put your guitar (the dog

    asked by Lana Del Rey on December 14, 2013
  68. Physics

    A ski jumper glides down a 30.0 degrees slope for 80.0 ft before taking off from a negligibly short horizontal ramp. If the jumpers takeoff speed is 45.0 ft/s, what is the coefficient of kinetic friction between skis and slope?

    asked by Khalid on December 18, 2015
  69. Physics

    A toy of mass 0.151 kg is undergoing SHM on the end of a horizontal spring with force constant k = 301 N/m . When the object is a distance 1.23×10^−2 m from its equilibrium position, it is observed to have a speed of 0.297 m/s. A-What is the total

    asked by Hadi on January 2, 2007
  70. Physics

    A 64.1-kg athlete leaps straight up into the air from a trampoline with an initial speed of 7.4 m/s. The goal of this problem is to find the maximum height she attains and her speed at half maximum height. Write the general equation for energy conservation

    asked by ann on November 21, 2011
  71. ENEGRY COSTS

    I need to know how much it would cost to build the following plants (as in factories): Solar energy plant Biomass plant Geothermal energy plant Wind energy plant nuclear Energy plant

    asked by Lena on April 9, 2009
  72. Physics

    A 0.40kg block is held against a compressed spring of stiffness 68.2N/m and compression 0.64m parallel to a 24 degree incline that is 1.27m long. The coefficient of kinetic friction between the block and the incline is 0.34. The external force holding the

    asked by Alphonse on October 18, 2012
  73. physics

    Note: Coal and oil are non-renewable re- sources. A friend says the energy of oil and coal is actually a form of solar energy. Is your friend correct, or mistaken? 1.Mistaken; the energy is actually nuclear. 2. Correct; these materials are the result of

    asked by lynn on October 26, 2011
  74. Science

    An insect of mass 20g crawls from the centre to the outside edge of a rotating disc of mass 200g & radius 20cm. The disc was initially rotating at 22.0 rad/s. What will be it's final angular velocity? What is the kinetic energy in the system?

    asked by Jitender on February 15, 2017
  75. physics

    A 1000 kg car has four 20 kg wheels. When the car is moving, what fraction of its total kinetic energy is due to rotation of the wheels about their axles? Assume that the wheels have the same rotational inertia as uniform disks of the same mass and size. 1

    asked by Joey on January 5, 2011
  76. Physics

    You have a grindstone with a mass of 90.0 kg, 0.340-m radius, and is turning at 90.0 rpm. You press a steel ax against it, bringing it to a stop in 36.0 s. (a) What is the change in kinetic energy of the grindstone? (b) If the tangential force due to the

    asked by Anonymous on June 19, 2014
  77. physics

    A 4.20-kg watermelon is dropped from rest from the roof of a 28.0-m -tall building and feels no appreciable air resistance. Calculate the work done by gravity on the watermelon during its displacement from the roof to the ground. Just before it strikes the

    asked by clariza gonzalez on October 29, 2012
  78. Similes

    Write a simile to finish each sentence. 1. The old man's legs moved as slowly and as awkwardly as... 2. His face fell in folds like... 3. His eyes were grey like old snow. 4. His body looked old and used like.. 5. His smile was as young as... 6. He called

    asked by Larry on January 13, 2009
  79. physics

    A baseball player slides into third base with an initial speed of 7.75 m/s. If the coefficient of kinetic friction between the player and the ground is 0.45, how far does the player slide before coming to rest?

    asked by john on July 12, 2015
  80. Physics

    A baseball player with a mass of 79 kg slides into homeplate. The coefficient of kinetic friction between the player and the ground is μk = 0.632. If the player comes to rest after 1.04 s, what is his initial speed?

    asked by danny on March 4, 2015
  81. Physics

    On a frozen pond, a person kicks a 10.0 kg sled, giving it an initial speed of 12.2 m/s. How far does the sled move if the coefficient of kinetic friction between the sled and the ice is .10?

    asked by Nicole on December 11, 2009
  82. Physics

    A baseball player slides into third base with an initial speed of 3.8m/s. If the coefficient of kinetic friction between the player and the ground is 0.40, how far does the player slide before coming to rest?

    asked by Marissa on February 11, 2015
  83. physics

    A shuffleboard disk is accelerated to a speed of 5.6 m/s and released. If the coefficient of kinetic friction between the disk and the concrete court is 0.29, how far does the disk go before it comes to a stop? The courts are 15.7 m long.

    asked by Karl on September 26, 2012
  84. chemistry

    Why do you think that the ionization energy tends to decrease within a family of the periodic table? Since ionization energy tends to increase within a period of the periodic table because they are in higher energy orbitals so it'll take more energy to

    asked by sh on April 19, 2009
  85. ph

    A 64.4-kg skateboarder starts out with a speed of 1.95 m/s. He does 119 J of work on himself by pushing with his feet against the ground. In addition, friction does -260 J of work on him. In both cases, the forces doing the work are non-conservative. The

    asked by Anonymous on March 11, 2014
  86. Physics

    A 57.4-kg skateboarder starts out with a speed of 2.46 m/s. He does 114 J of work on himself by pushing with his feet against the ground. In addition, friction does -248 J of work on him. In both cases, the forces doing the work are non-conservative. The

    asked by Anonymous on January 22, 2018
  87. physics 1

    A 64.4-kg skateboarder starts out with a speed of 1.95 m/s. He does 119 J of work on himself by pushing with his feet against the ground. In addition, friction does -260 J of work on him. In both cases, the forces doing the work are non-conservative. The

    asked by Anonymous on March 11, 2014
  88. Algebra

    You improve your time running a course by 5 seconds in week one, by 3 seconds in week two, and by 4 seconds in week three. What is the average weekly change in your running time? Can anyone help me with this problem pls.. Thanks

    asked by Mike on September 15, 2015
  89. Physics

    3) a) Calculate the unstretched length of a spring, which has a Hooke's constant of 40N/m and is 56cm long when supporting a stationary 800g object. I did mag = kx (0.800)(9.81) = 40x x = 0.20m l-x = u 56-20 = u u = 36cm Is that right? b) The period with

    asked by Alex on May 19, 2008
  90. physics

    Croquet ball A moving at 8.0m/s makes a head on collision with ball B of equal mass and initially at rest. Immediately after the collision ball B moves forward at 7.1m/s . What fraction of the initial kinetic energy is lost in the collision?

    asked by Ina on March 14, 2014
  91. physics

    You are late for your train. You are running at a speed of 7 m/s to catch the train. When you are a distance of 100 meters from the station the train starts to pull away from the station with an acceleration of .2 m/s squared. Will you catch the train?

    asked by jessica on September 7, 2007
  92. physics

    You are late for your train. You are running at a speed of 7 m/s to catch the train. When you are a distance of 100 meters from the station the train starts to pull away from the station with an acceleration of .2 m/s squared. Will you catch the train?

    asked by Jessica on September 7, 2007
  93. math

    In order to pass a physical education class at a university, a student must run 1.0 mi in 12.5 min. After running for 10.0 min (assume constant speed), she still has 510 yd to go. What constant acceleration does she need over the final 510 yd in order to

    asked by Charles on September 14, 2014
  94. Physics

    4.82 kJ work is done by a worker pulling a crate across the deck of a ship at a constant speed of 7.82 m/s by a 453 N force. The rope is being pulled at a 37.0 degree angle to the deck. a)How far was it pulled? b)What is the friction force? c)What is the

    asked by Brad on November 26, 2014
  95. Really Physics

    A 2.4 Kg object moving to the right at 0.8c collides with a 3.2 kg object moving to left at 0.6c. They stick together. Find the mass and velocity of the resulting combined object by; a) assuming that you have no knowledge of relativistic physics, b) using

    asked by Bob on March 13, 2011
  96. physics

    On a cold day, you take a breath, inhaling 0.50 L of air whose initial temperature is −10°C. In your lungs, its temperature is raised to 37°C. Assume that the pressure is 101 kPa and that the air may be treated as an ideal gas. What is the total change

    asked by zetty on August 12, 2017
  97. Physics

    Olympic diver performs a dive from the 10 m platform and achieves a speed of 14 m/s just before entering the water. Neglecting air friction, approximately how many times larger the diver’s speed than the diver would have achieved by performing from a 1 m

    asked by Ashley on November 13, 2017
  98. Physics

    An Olympic diver performs a dive from the 10 m platform and achieves a speed of 14 m/s just before entering the water. Neglecting air friction, approximately how many times larger the diver’s speed than the diver would have achieved by performing from a

    asked by Timmy on March 15, 2012
  99. physics

    The index of refraction of water for a given monochromatic light in water is n=4/3. The wavelength of this light in water is 500nm.  a) find the speed of this light in water.  b) find the energy of one photon of this light . Does this energy change if

    asked by vicky on February 23, 2017
  100. chemistry

    an electron jumps from energy level to energy level two by absorbing a photon of energy 8eV. What is the most likely energy of the photon that will be emitted by the electron when it moves back down to energy level one

    asked by rona on June 12, 2012

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