1. physics

    A rock is dropped off of a bridge into the water below. If the initial velocity was zero, and the well is on Earth (g = 9.8 m/s2), and you see the splash 4.59 seconds after the rock was dropped, how high was the bridge above the water? Give your answer in

    asked by Anonymous on February 26, 2014
  2. Physical Science

    Suppose a whale is stranded on a beach. It is 15 meters from the sea. He weighs 1.5 x 10 to the power of 6, and the force a few people need to overcome to push him into the water is 0.25 times the whale's weight. How much work must the people do to push

    asked by Borjan on April 23, 2009
  3. magnetism

    A current of 20 mA flows in a single circular loop with a radius of 2 meters. A uniform magnetic field of 1.2 T points parallel to the plane of the loop. What is the magnitude of the magnetic moment of the loop in A-m^2? What is the magnitude of the torque

    asked by James on November 20, 2013
  4. 6th grade

    The empire state building is 381 meters tall. The grand canyon is 76 empire state building laid end to end at its widest point. Write and solve an equation. division

    asked by danielle on September 24, 2008
  5. math

    String A is 35centimeters long. String B 5 times as long string A. Both are necessary to create a decorative bottle find the total length of string needed for 17 identical decorative bottles express your answer in meters

    asked by Anonymous on October 3, 2017
  6. electricity and magnetism

    A current of 20 mA flows in a single circular loop with a radius of 2 meters. A uniform magnetic field of 1.2 T points parallel to the plane of the loop. What is the magnitude of the magnetic moment of the loop in A-m^2? What is the magnitude of the torque

    asked by Jason on November 22, 2013
  7. electromagnets

    A current of 20 mA flows in a single circular loop with a radius of 2 meters. A uniform magnetic field of 1.2 T points parallel to the plane of the loop. What is the magnitude of the magnetic moment of the loop in A-m^2? What is the magnitude of the torque

    asked by Anton help needed on November 20, 2013
  8. calculus

    (Compute all instantaneous rate of change using the limit of the difference quotient) 2) A football's path is represented by the function h(t)=-4.9t^2 +10t+2, where h is its height, in meters, after t seconds. Find the rate of change of the football's

    asked by matt on October 15, 2016
  9. Physics

    A crate of mass 29 kg is pushed up a ramp by a person as shown in the figure below. The person pushes the crate a distance of 25 m as measured along the ramp. Assume the crate moves at constant velocity. Assume the coefficient of kinetic friction between

    asked by Sierra on July 11, 2012
  10. Mathematics

    A tree is "x"meters high. The angle of elevation of its top from a point P on the ground is 23degrees. Form another point Q, 10meters from P and in line with P and the foot of the tree, the angle of elevation is 32degrees. Find "x". (i need a way on how to

    asked by anonymous on March 5, 2008
  11. Physics

    A water balloon launcher launches a balloon straight up at a flying kite. If the kite is hovering 75.0 meters off the ground, and the balloon hits it on its upward trajectory with a velocity of 12.2m/s, a) What was the launch velocity of the balloon

    asked by Anon on June 19, 2016
  12. geometry

    Two vertical poles 20 meterd and 30 metrrd high, are 60 meters apart. A rope is to be attached from the top of one pole to a point on the ground half-way between the poles and then to the top of other pole. How long a rope is needed?

    asked by Anonymous on May 3, 2018
  13. Physics

    A projectile is launched at an angle of 64.3 degrees with the horizontal (x axis) at some unknown velocity. After 4 seconds, the object's angle of trajectory is 47.2 degrees above the horizontal. What is the object's vertical displacement at this time in

    asked by Haley on October 4, 2012
  14. Physics

    A ball rolls without slipping at 5 m/s off an incline of 15 degrees. The ball falls off the incline and enters a hole 4 meters below the incline. What is the horizontal distance between the bottom of the incline and the the hole. I havent the foggiest how

    asked by Adam on June 7, 2017
  15. math

    a piece of wire 12 meters long is cut into two pieces.one piece is bent into the shape of an equilateral triangle and the other into the shape of a circle.how should the wire be cut so that the combined area of the two figures is as small as possible?

    asked by jun gajetos on August 10, 2014
  16. physics

    A small ball of mass 2.00 kilograms is moving at a velocity 1.50 meters/second. It hits a larger, stationary ball of mass 5.00 kilograms. What is the kinetic energy of the system after the collision if the collision is elastic?

    asked by marie on October 10, 2012
  17. Math

    Mang Jose wants to make a table which has an area of 6m^2.The length of the table has to be 1m longer than the width. a.If the width of the table is p meters,what will be it's length. b.Form a quadratic equation for the problem and give the dimensions of

    asked by Nhiel Andong on July 10, 2018
  18. physics

    A woman does 200 J of work to move a table that weighs 600 N across the floor for a distance of 4.0 meters. What is the magnitude of the force that the woman applied to the table if the force is applied in the horizontal direction?

    asked by anonymous on October 7, 2019
  19. Physics

    How much force does it take to stretch a 15-m-long, 1.0 cm -diameter steel cable by 6.0mm ? I know f/a divided by change in length/l knowns are diameter 1.0cm, change in lngth 6.0mm, length 15 m. Convert all to meters.

    asked by Nuala on October 7, 2014
  20. science

    1. Summarize each of the following station plots. Make sure you include all parts of the weather displayed in your summary. A. B. C. A. Temperature: Dewpoint: Cloud Cover: Wind speed: Wind Direction: Weather Symbol: Pressure: B. Temperature: Dewpoint:

    asked by anonymous on November 26, 2019
  21. Earth physics I think

    Keplerian motion/Analemma Does the earth actually alter speed or is it a result of the earth being closer to the sun at some points in its eliptical orbit or BOTH? Additionally does anyone know where the value of the earth/sun analemma can be found. I read

    asked by MIKE on October 19, 2006
  22. physics

    The 1994 Winter Olympics included the aerials competition in skiing. In this event skiers speed down a ramp that slopes sharply upward at the end. The sharp upward slope launches them into the air, where they perform acrobatic maneuvers. In the women's

    asked by myx on October 24, 2010
  23. Physics

    The 1994 Winter Olympics included the aerials competition in skiing. In this event skiers speed down a ramp that slopes sharply upward at the end. The sharp upward slope launches them into the air, where they perform acrobatic maneuvers. In the women's

    asked by Kristi on July 9, 2011
  24. Physics

    The 1994 Winter Olympics included the aerials competition in skiing. In this event skiers speed down a ramp that slopes sharply upward at the end. The sharp upward slope launches them into the air, where they perform acrobatic maneuvers. In the women's

    asked by Emily on June 27, 2012
  25. Physics

    The 1994 Winter Olympics included the aerials competition in skiing. In this event skiers speed down a ramp that slopes sharply upward at the end. The sharp upward slope launches them into the air, where they perform acrobatic maneuvers. In the women's

    asked by Donald on September 18, 2012
  26. physics

    A small ball rolls horizontally off the edge of a tabletop that is 1.2 m high. It strikes the floor at a point 1.52m horizontally away from the edge of the table. a) How long is the ball in the air? b) What is the speed at the instant it leaves the table?

    asked by jenny on October 24, 2006
  27. Physics

    Some rental cars have a GPS unit installed, which allows the rental car company to check where you are at all times and thus also know your speed at any time. One of these rental cars is driven by an employee in the company’s lot and, during the time

    asked by Ozgun on March 18, 2013
  28. physics

    a shopper in a supermarket pushes a cart with a force of 35 n directed at an angle of 25 downward from the horizontal. the force is just sufficient to over come the various frictional force, so the cart moves at constant speed. what is the net work don't

    asked by physics help please!!! on September 23, 2010
  29. stemplot one more question

    No, I don't think you should round the data. The stems should probably be the numbers 13,14,15,...,19 Line them up like this with the leafs to the right S L 13 |9 14 |8,9 15 |2,8 . . . You can finish it. Starting the stems with 1 would accomplish nothing

    asked by Anonymous on August 30, 2006
  30. Physics

    Problem: A hunter shoots an arrow at a deer directly away from him. When the arrow leaves the bow, the deer is at a distance of 38 m. When the arrow strikes, the deer is at a distance of 51.00 m. The speed of the arrow is 65.00 m/s. What must have been the

    asked by Cathy on February 2, 2009
  31. physics- i need help ASAP

    A ship leaves the island of Guam and sails a distance 265 km at an angle 41.0 north of west. ***In which direction must it now head so that its resultant displacement will be 130 km directly east of Guam? (Express your answer as an angle measured south of

    asked by Sharefa on February 29, 2012
  32. Physics

    The voltage across an air-filled parallel-plate capacitor is measured to be 219.0 V. When a dielectric is inserted and completely fills the space between the plates as in the figure below, the voltage drops to 64.4 V. What is the dielectric constant of the

    asked by chuck on September 23, 2010
  33. physics

    A ship leaves the island of Guam and sails a distance 280 at an angle 39.0 north of west. 1.In which direction must it now head so that its resultant displacement will be 125 directly east of Guam? (Express your answer as an angle measured south of east)

    asked by meme on February 13, 2013
  34. Mat/116

    An experiment is underway to test the effect of extreme temperatures on a newly developed liquid. Two hours into the experiment the temperature of the liquid measured to be -17 degrees celsius. After eight hours of the experiment the temperature of the

    asked by Carla on February 23, 2014
  35. plz help me in physics

    A ship leaves the island of Guam and sails a distance 295km at an angle 35.0 north of west. a:In which direction must it now head so that its resultant displacement will be 100km directly east of Guam? (Express your answer as an angle measured south of

    asked by ahmed on October 5, 2011
  36. math

    1.Mark makes Php 40.00 per hour if he works 40 hours or less.If works overtime,he makes an additional Php 5.00 per hour as overtime pay.What would be his total pay if he worked 58 hours? 2.The world's greatest known ocean depth of 36,201 feet was recorded

    asked by rhove on June 17, 2013
  37. physics

    A tortoise and a hare are having a 1000-meter race. The tortoise runs the race at a constant speed of 2.30 cm/s. The hare moves at an average speed of 1.50 m/s for 10.0 minutes and then decides to take a nap. After waking up from the nap, the hare

    asked by Dina on December 21, 2015
  38. Algebra 1

    It takes a lot of snow ofr the federal government in Washington D.C. to shut down, but even they experienced a two-hour delay last Friday. This is to allow people to take it slow in thier way to work. A commute to work that usually takes someone 24 minutes

    asked by Libby on February 7, 2008
  39. Microeconomics

    In the shortrun function of a company with a constant variable cost is given by the equation q=225+55q,where TC is the total cost and q is the total quantity of output,both measured in thousands.1.what is a company's fixed cost?2.if the company produced

    asked by Grace pebetse on March 7, 2015
  40. chemistry

    n the spectroscopic analysis of many substances, a series of standard solutions of known concentration are measured to generate a calibration curve. How would you prepare standard solutions containing 10.0, 25.0, 50.0, 75.0, and 100. ppm of copper from a

    asked by mathew on October 6, 2014
  41. Chemistry Help!!

    a kilogram of aluminum metal and a kilogram of water are each warmed to 75 degree Celsius and placed in two identical insulated containers. one hour later, the two containers are opened and the temperature of each substance is measured. the aluminum has

    asked by dani on January 19, 2011
  42. physics

    You are on a train traveling east at speed of 17.0 m/s with respect to the ground. 1) If you walk east toward the front of the train, with a speed of 1.1 m/s with respect to the train, what is your velocity with respect to the ground? 2) If you walk west

    asked by ali on September 10, 2012
  43. physics

    a pair of glasses is dropped from the top of a 36.0 m high stadium. a pen is dropped from the same position 2.21 seconds later. how high above the ground is the pend when the glasses hit the ground? (disregard air resistence. a=-g=-9.81 meters per second

    asked by PHYSICS HELP on November 11, 2010
  44. Applied Physics

    An anchor holding a boat stationary on a river forms a 65 degree angle with the river bottom. The anchor line is 40 meters long. Assuming the river has a uniform depth, how deep is the river directly below the boat?

    asked by adam on May 20, 2013
  45. college alg.

    An event in the Summer Olympics is 10-meter springboard diving. In this event, the height s, in meters, of a diver above the water t seconds after jumping is given by s(t) = –4.9t2 + 7.1t + 10. What is the maximum height that the diver will be above the

    asked by kellyM on April 8, 2014
  46. Geometry

    A rectangular city block measures 105 by 88 meters.The city council wants to divide the block into two triangles of equal area. What is the length of the hypotenuse of each triangular area?( I already found the area of the whole rectangle and the area of

    asked by Anonymous on November 14, 2011
  47. trigonometry

    Mickey determines that the angle of elevation from his position to the top of the tower is 52°. He measures the angle of elevation again from a point 47 meters farther from the tower and finds to be 31°. Both positions are due East of the tower. Find the

    asked by maniru on January 11, 2015
  48. Chemistry

    The common picnic ant walks with a velocity of 0.01 meters per second (m/s). How long will it take an ant to walk across a 8 ft long picnic table, assuming it does not meet with an untimely demise along the way? (1 m = 39 in, 1 ft = 12 in) 8ft/1 X 12in/1in

    asked by Peyton on February 4, 2017
  49. physics

    Thank you drwls, My problem is a. The lifetime of the levels in a hydrogen atom are of the order 10-E8s. What is the evergy uncertainty of these states? Compare this result with the energy value of the first excited state. b. Find the shortest and the

    asked by bun on December 8, 2009
  50. E.L.A. PLEASE CHECK!

    Which choice best describes the underlined word or words in the sentence? Could the Polynesian Islanders really have found their way across the Pacific Ocean? Underlined is: Could ________ have found A- simple predicate B- complete predicate C- compound

    asked by Skye on October 1, 2014
  51. mat/116

    need an expression only to this word problem: An experiment is underway to test the extreme effect of a newly developed liquid. Two hours into the experiment the temperature if the liquid measured to be -17 degrees Celsius. After eight hours of h

    asked by csrla on February 23, 2014
  52. Physics

    The weight of an object on Earth is 350 newtons. On Mars, the same object would weigh 134 newtons. What is the acceleration due to gravity on the surface of Mars, given that it is 9.8 meters/second2 on Earth?

    asked by Plato on December 16, 2012
  53. Chemistry

    Kinetic energy is calculated from the formula KE = (1/2)mv2. Suppose a mass of 14.2 kg (m = 14.2 kg) is moving with a velocity of 750. ms-1 (v = 750. meters per second). Calculate the kinetic energy of this mass in units of Joules.

    asked by Abby on January 25, 2011
  54. trigonometry

    to unload hollow blocks from the cargo truck a wooden plank whose end rests against the truck's platform 1.5 meters above the ground is used. if it is inclined 37%49 with the ground, how long is the wooden plank?

    asked by karEn on August 14, 2014
  55. physics

    Taylor is interested in archery. She draws her bow and shoots an arrow at angle of 50°. It goes a distance of 100 meters. At what other angle could Taylor shoot an arrow with the same amount of force and have it go the same distance?

    asked by Cynethia on April 2, 2015
  56. math

    the formula a = 46c gives the floor area a in square meters that can be wired using circuits A.solves a = 46c for c b. if a room is 322 square meter, how many circuits are required to wire this room?

    asked by Anonymous on September 6, 2017
  57. Physics

    A runner covers one lap of a circular track 40.0 m in diameter in 62.5s (a) for that lap what were her average speed and average velocity? (b) if she covered the first half lap in 28.7 s, what were her average speed and average velocity for that half lap?

    asked by Sarah on June 3, 2009
  58. Physics

    You are driving down a highway at a speed of 20.0m/s when you spot a deer. You quickly slam on your brakes, trying to stop your car in front of the deer. Assume the braking force can be modeled as kinetic friction with a friction coefficient of 0.80. If

    asked by K on October 28, 2014
  59. Physics

    Each wheel is a solid disk of mass 2.0 kg. On the horizontal surfaces the center of mass of each wheel moves with a linear speed of 6.0 m/s. (a1) What is the algebraic expression for the total kinetic energy KEtotal of the rolling wheel? Express your

    asked by Rash on October 20, 2018
  60. math-calculus

    Hi i've been struggling over this question for a while. Can anybody help me with this? A body's velocity at the time t sec is v = 2t^3 - 9t^2 +12t - 5 m/sec. Find the body's speed each time the acceleration is zero. ________________________________ What i

    asked by manny on October 1, 2007
  61. Physics

    A blue car with mass mc = 410.0 kg is moving east with a speed of vc = 23.0 m/s and collides with a purple truck with mass mt = 1248.0 kg that is moving south with a speed of vt = 10.0 m/s . The two collide and lock together after the collision. 1)What is

    asked by Mike on October 8, 2012
  62. astronomy

    Rank the following hypothetical planets -- all of which have the same total mass and same radius -- from lowest moment of inertia to highest moment of inertia: 1) A uniform sphere of mixed up rock and iron 2) A rocky planet with an iron core 3) A rocky

    asked by keitanako on April 14, 2014
  63. physics help!

    An electron enters the region of a uniform electric field between two oppositely charged parallel plates as shown, with an initial velocity of 3 x 106 m/s. The electric field between the plates is measured to be E = 200N/C. The horizontal length of the

    asked by UnKnown on May 12, 2011
  64. physics

    A ship leaves the island of Guam and sails a distance 280 at an angle 38.0 north of west.In which direction must it now head so that its resultant displacement will be 115 directly east of Guam? (Express your answer as an angle measured south of east) How

    asked by muhammad on March 7, 2012
  65. stats

    Weights of parts are normally distributed with varianceσ2. measurement error is normally distributedwith mean zero and variance 0.5σ2, independent ofthe part weights, and adds to the part weight. Upper andlower specifications are centered at 3σ about

    asked by sam on November 14, 2014
  66. Physics

    A rubber ball is attached to a paddle by a rubber band. The ball is initially moving away from the paddle with a speed of 4.5 m/s. After 0.30 s, the ball is moving toward the paddle with a speed of 2.0 m/s. What is the average acceleration of the ball

    asked by Anonymous on May 21, 2013
  67. Algebra

    An air plane can travel 560 miles per hour with the wind and 480 miles per hour against the wind. Determine the speed of the plane in still air and the speed of the wind.

    asked by Lora on March 28, 2013
  68. math

    A car passed a point on a course at exactly 12 noon and maintained a speed of 60 km/h. A second car passed the same point 1 hour later, followed the same course, and maintained a speed of 100km/h. When, and after what distance from this point, would the

    asked by Anon on July 13, 2019
  69. Algebra

    A raft was sent away from point A downstream. A patrol-boat left A 5 hour and 20 min later and caught up with the raft 20 km away from point A. What was the speed of the raft if the speed of the patrol-boat was 12 km/hour?

    asked by Anish Panda on March 27, 2016
  70. Math (quick help pls)

    Selena took 20 seconds to swim from point A to point B at a speed of 4.5 m/s. She took 18 seconds to swim back from point A to point B. Find Selena's average speed when she swam from Point B to Point A (Help me get to the answer please ty)

    asked by Anonymous on February 12, 2019
  71. Physics

    An Escort and a Camaro traveling at right angles collide and stick together. The Escort has a mass of 1200 kg and a speed of 25 km/h in the positive x direction before the collision. The Camaro has a mass of 1700 kg and was traveling in the positive y

    asked by Alex on November 6, 2014
  72. Physics

    A bullet of mass 5.15 g is fired horizontally into a 2.74 kg wooden block at rest on a horizontal surface. The coefficient of kinetic friction between block and surface is 0.185. The bullet comes to rest in the block, which moves 1.84 m. (a) What is the

    asked by confused on November 21, 2010
  73. Algebra 2

    As a rule of thumb, the power P (in horsepower) that a ship needs can be modeled by P = d^2/3 • s^3 / c where d is the ship’s displacement (in tons), s is the normal speed (in knots), and c is the Admiralty coefficient. If a ship displaces 30,090 tons,

    asked by jay on October 23, 2011
  74. Newtonian Mechanics

    A 10.5 kg weather rocket generates a thrust of 240 N . The rocket, pointing upward, is clamped to the top of a vertical spring. The bottom of the spring, whose spring constant is 480 N/m , is anchored to the ground. a)Initially, before the engine is

    asked by Kevin on February 20, 2019
  75. Calculus

    A pebble is dropped from an open window 100 meters above the ground. a) What is the velocity of the pebble after 2 seconds? b) What is the velocity of the pebble when it hits the ground?

    asked by Anonymous on October 18, 2014
  76. algebra

    A truck traveling at 16 m/s is 24 meters behind the bus at t = 0. The equation d = -24 + 16t gives the position of the truck. At what time will the truck be the same distance from the intersection as the bus? What will that distance be?

    asked by sam on March 3, 2013
  77. Maths

    After t seconds, a particle has covered a distance of S meters, where S=t^3-3t^2+9t+1 Determined the time when: (i) Velocity is zero (ii)Acceleration is zero (b)Find its velocity and acceleration when t=2 seconds. (c) What is the acceleration after 6

    asked by Ande2 on June 24, 2019
  78. algebra

    the length of a rectangular prism is four times its width. the volume of the prism is 380 cubic meters. find the length and width of the prism

    asked by Marek on April 11, 2019
  79. Math

    A square lot is to planted with santan plants all around. The side of the lot measures 10 meters. If plant will be planted 20cm apart, how many plants must be planted in all?

    asked by Jillian on January 6, 2016
  80. physics

    A ball rolls off a platform that is 5 meters above the ground. The ball's horizontal velocity as it leaves the platform is 4.8 m/s. (a) How much time does it take for the ball to hit the ground? (Use g = 10 m/s2.) . s

    asked by ana on February 1, 2012
  81. Physics

    A man walks east before proceeding north. If the displacement of the man is 13 meters; 67.38 degrees north of east. What was the distance covered by the man?

    asked by Ellery on August 28, 2019
  82. algebra

    If Jackson drops a ball from a building at the height of 80 meters. What is the height of the ball to the nearest tenth of a meter exactly 3 seconds after he drops the ball.

    asked by Kathy on February 17, 2014
  83. trigonometric

    a tower 61 m high is located 44 meters from a tall tree.from the top of the tree.the angle of elevation to the tower is 36 degrees. how tall is the tree?

    asked by mohammed on August 7, 2016
  84. Math

    A car is traveling at a rate of 35 meters per second. What is the car's rate in kilometers per hour? How many kilometers will the car travel in 3 hours? Do not round your answers.

    asked by James on July 29, 2016
  85. math

    A square garden has a side length that si 3 meters shorter than the length of a rectangular garden. Find the perimeter of the rectangular garden in terms of y

    asked by Anonymous on January 24, 2018
  86. CHEMISTRY

    You are conducting experiments with your x-ray diffractometer. (a) A specimen of molybdenum is exposed to a beam of monochromatic x-rays of wavelength set by the Kα line of silver. Calculate the value of the smallest Bragg angle, θhkl, at which you can

    asked by dato on December 14, 2012
  87. CHEMISTRY

    You are conducting experiments with your x-ray diffractometer. (a) A specimen of molybdenum is exposed to a beam of monochromatic x-rays of wavelength set by the Kα line of silver. Calculate the value of the smallest Bragg angle, θhkl, at which you can

    asked by luis on December 14, 2012
  88. sciecne

    A space station has the form of a hoop of radius R = 15 m, with mass M = 6000 kg. Initially its center of mass is not moving, but it is spinning slowly with angular speed ù0 = 0.0018 radians/s.Then a small package of mass m = 5 kg is thrown by a

    asked by sara on July 30, 2014
  89. Physics - KE/Inertia

    The rigid body shown in Figure 10-66 (it is a triangle with the upper mass = to M and the bottom two corners/masses equal to 2M. The bottom side length equals .70 cm with point P in the middle of the side and the other two sides equal .55 cm) consists of

    asked by COFFEE on March 25, 2007
  90. Biology 1

    Does anyone know of a Photosynthesis concept map that includes all of the following: Photons, thylakoids, reactions, sun, NADPH, carbohydrates, xanthophyll, wavelength, pigments, stroma, product, photosynthesis, NADP+, visible light, glucose, energy,

    asked by Jane on December 5, 2013
  91. Calculus

    An object is traveling along the x axis so that its speed is given by v(t)=t^2-7t+10 m/s. (a) Find the times when the object is at rest. (b) Find the acceleration at both of these times. Interpret the acceleration in terms of the motion of the object, ie

    asked by Elliott on May 14, 2013
  92. Physics 1

    The cartesian coordinates of a point in the xy plane are x= -3.64 m, y = -1.75 m. 1. Find the distance, r, from the point to the origin. Answer in units of m. 2. Calculate the angle between the radius-vector of the point and the positive x axis (measured

    asked by Kailey on August 26, 2010
  93. Chemistry

    What happens to the mass of a beaker of water with a teaspoon of sugar in it measured on a balance pan compared to a teaspoon of sugar and a beaker of water separated on a balance pan? does the mass increase, decrease or stay the same? and why?

    asked by Sydney on January 18, 2011
  94. Science

    1. How do you calculate kinetic energy (what is the formula) 2. A 700-kg vehicle is traveling at a speed of 6 m/s. How much kinetic energy does it have? 3. Two rocks of different masses are rolling down a hill at the same speed. Which rock (small one or

    asked by Khaliyl R Testman on November 2, 2018
  95. physics

    A metal emits photoelectrons when yellow light is made to fall on it. Which of the following is correct when the metal is irradiated by a violet light? Choose one answer. a. The speed of electrons would increase. b. The speed of electrons would decrease.

    asked by ashley --- HELP PLEASEE!!! on May 1, 2011
  96. Physical sciences

    1 term question 1 if object a exerts a force on onject b,object b exerts an equal force on object a,but in the opposite direction waves in which the particles vibrate in a direction perpendicular to the direction in which the wave energy is propagated 3

    asked by Given on March 8, 2013
  97. Physical sciences

    1 term question 1 if object a exerts a force on onject b,object b exerts an equal force on object a,but in the opposite direction 2 waves in which the particles vibrate in a direction perpendicular to the direction in which the wave energy is propagated 3

    asked by Given on March 8, 2013
  98. Physical sciences

    1 term question 1 if object a exerts a force on onject b,object b exerts an equal force on object a,but in the opposite direction 2 waves in which the particles vibrate in a direction perpendicular to the direction in which the wave energy is propagated 3

    asked by Given on March 8, 2013
  99. Physical sciences

    1 term question 1 if object a exerts a force on onject b,object b exerts an equal force on object a,but in the opposite direction waves in which the particles vibrate in a direction perpendicular to the direction in which the wave energy is propagated 3

    asked by Given on March 8, 2013
  100. calculus

    Me again. One last question! Again, just needed my answer verified with any explanation or walk-through. The position of a particle moving along a coordinate line is s=√(3+6t) with s in meters and t in seconds. find the particle's acceleration at t=1

    asked by kailey on November 24, 2014

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