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Question:
An aluminum can of mass 100g contains 200g of water.both initially temperature 15°c are placed in a freezer at -5.0°c. Calculate the quantity of heat that has to be removed from the can and water for their temperature to fall to -5.0 °c.
three charges are placed on the y axis. one charge of -2.4 micro-coulombs is placed at y 0 another charge of 1.7
A man ties one end of a strong rope 7.64 m long to the bumper of his truck, 0.505 m from the ground, and the other end to a vertical tree trunk at a height of 3.90 m. Compute the magnitude of the torque on the tree
A car starts from rest and travels for 10s with a uniform acceleration of +2.4 m/s2. The driver then applies the brakes, causing a uniform negative acceleration of -2.0 m/s2.
A 52dB sound wave strikes an eardrum whose area is 5.0×10?5m^2. How much energy is received by the eardrum per second
A 0.31 MeV x-ray photon collides by an electron and scatters straight back the way that it came. What is the kinetic energy of the scattered electron? What is the energy of the backscattered photon? Suppose that it was initially at rest.
A ball is thrown directly downward with initial speed of 8 m/s from A height of 30 meter. Find at what time interval does the ball strike the ground
A jogger's internal energy changes because he performs 6.10 105 J of work and gives off 4.9 multiplied by 105 J of heat. Determine the magnitude of the heat given off while walking
Calculate the energy needed to accelerate a spaceship of mass10,000 kg to a speed of .3c for intergalactic spaceexplortation. Compare this with a projected annual energy usage onEarth of 1021.
A 3.50-kg ball, moving to the right at a velocity of +2.72 m/s on a frictionless table, Find the magnitude and direction of the final velocity of the two balls if the collision is completely inelastic
Why is the displacement zero when (for example a horse) crosses the finish line in a circular race?
A 11.1-kg object hangs in equilibrium at the end of a rope (taken as massless) while a wind pushes the object with a 60.3-N horizontal force. find the rope\'s angle from the vertical
you have encouraged your little sister, who has just gotten glasses for her severe near-sightedness, to give you those glasses so you can play with them. If your sister's face is 180. mm-tall, how tall will it appear to be in the image (in mm)
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