Physics Homework Answers & Questions

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35 results
  • Waiting for answer Vector and scalar
    What is vector and scalar?
  • Answered Rod with 2 masses
    A slender rod is 80.0 cm long and has mass 0.270 kg . A small 0.0200-kg sphere is welded to one end of the rod, and a small 0.0500-kg sphere is welded to the other end. The rod, pivoting about a stationary, frictionless axis at its center, is held horizontal and released from rest. What is the linea...
  • Answered nanotechnology
    Watch the video titled Nanotechnology Today - Fuel Cells, Buckyballs and Carbon Nanotubes - Bytesize Science (7 min 24 sec) under the Nanotechnology terms section of the Science Corner. You can also view the video at https://www.youtube.com/watch?v=ndJlgTkm0oQ. Next, use the Internet, Strayer Libr...
  • Waiting for answer Physics help please
    a ball is thrown with a velocity of 20.0m/s 30° and travels 3.30 s before it hits the ground what is the height from which it was thrown
  • Waiting for answer sosi
    This is the case of oblique elastic collision. Let the first ball have velocity initial velocity before the collision = u and final velocity after the collision = v at 30.9 above the horizontal and the second ball have velocity w after the collision at an angle below the horizontal. By th...
  • Answered Lab 5- Conservation of energy
    Lab Objectives: Learn about conservation of energy with a skater dude! Build tracks, ramps and jumps for the skater. view the kinetic energy, potential energy and thermal energy (due to friction) as the scatter moves. Experience the differences in kinetic potential and thermal energies at...
  • Answered Physics 1210: College Physics...
    ACTIVITY 1: Finding the density of a fluid Reset everything in the Buoyancy simulation and make sure everything is unchecked under Show Forces and Readouts . Your simulation window should look like the one below. ACTIVITY 2: Explore how the pressure in a fluid changes with height. Start...
  • Answered Physics 1210: College Physics...
    ACTIVITY 1 Start the simulation and click Pause. Check the buttons for Potential Energy Reference and Grid. Click and drag the blue dot at the bottom of the track until it reaches the ground (reference line) as shown below. Click and drag to place the skater (mass 75 kg) on the track at the 6...
  • Answered BALLS FALLING OFF TABLE
    Ball #1 (mass m) rolls off a table of height h and ball #2 (mass 2 m) rolls off a table of height 3 h. The balls have the same initial speed and hit the floor at horizontal distances x1 and x2 from the base of the table, respectively. Which statement is true? a)x2 =9x1 b)x2=x1 c)x2= 3x1...
  • Answered ELASTIC COLLISION OF CARS
    A bumper car with a mass of 225kg moves with a velocity of 2.8m/s towards a second 227kg car sitting at rest. After an elastic collision, the first car moves off in a direction at an angle 42degrees from its original direction. The second car moves off in a direction perpendicular to the first. Find...
  • Answered A sphere s having mass of 50g...
    A sphere s having mass of 50g and it's radius s 2cm.calculate its density and conclude whether the body will sink or float...?
  • Answered if two vectors have magnitude...
    if two vectors have magnitude of 5 and 12, respectively, and are at right angles to each other, what is their resultant
  • Answered Single charged sodium ions are...
    Single charged sodium ions are accelerated through a potential difference of 398 V. (a) What is the momentum acquired by such an ion? kg*m/s (b)What is the de Broglie wavelength? fm
  • Answered water flows through a 2 in. op...
    water flows through a 2 in. opening in the side of a tank If the opening is 8 ft. Below the surface of the water. What volume would escape from the tank per minute ?
  • Waiting for answer A person standing at the edge...
    A person standing at the edge of a seaside cliff kicks a stone over the edge with a speed of 14 m/s. The cliff is 51 m above the water’s surface. The acceleration of gravity is 9.81 m/s With what speed does the stone strike the water? Answer in units of m/s.
  • Answered A Cliff divers at Acapulco jum...
    A Cliff divers at Acapulco jump into the sea from a cliff 33 m high. At the level of the sea, a rock sticks out a horizontal distance of 7.22m .the acceleration of gravity is 9.8 m/s . With what minimum horizontal velocity must the cliff divers leave the top of the cliff if they are to miss the rock...
  • Answered Write the expression for press...
    Write the expression for pressure exerted by a liquid?
  • Answered Q1) Romeo is pining away wanti...
    Q1) Romeo is pining away wanting to talk to Juliet once more. He decides to go below her window and throw rocks at the window to wake her. Romeo stands 6.0 m horizontally from Juliet's window and 9.5 m vertically below the window. Romeo wants the rocks to hit the window with only a horizontal compon...
  • Waiting for answer Homework5
    Hi, I need help to solve my homework.
  • Waiting for answer Please help me to solve my Sta...
    Please help me to solve my Statistical Optics homework (Goodman) please kindly find my attached file.
  • Waiting for answer "Aerodynamic Forces and Energy...
    "Aerodynamic Forces and Energy" Please respond to the following: Explore the interactive titled “Lift and Drag” under the Lift and Drag terms section of the Science corner. You can also view it at http://www.pbs.org/wgbh/nova/space/lift-drag.html. Next, describe the way in which one could use both...
  • Answered A car is driving west on a hig...
    A car is driving west on a highway at 25m/s. What is the cars speed in km/h?
  • Answered If the average velocity of an...
    If the average velocity of an object is zero in some time interval, what can you say about the displacement of the object for that interval?
  • Answered A device known as Atwood\'s ma...
    A device known as Atwood\'s machine consists of two masses hanging from the ends of a vertical rope that passes over a pulley. Assume the rope and pulley are massless and there is no friction in the pulley. Mass mB is greater than mass mA. Find expressions for the magnitude of their acceleration, a,...
  • Answered with the idea of conservation...
    with the idea of conservation of momentum explain why a golf ball leaves the surface of a golf club at a much greater velocity that the club was moving before it hit the ball?
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