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Which skater has the greater momentum after the push-off
  Question: Two ice skaters, Paula and Ricardo, push off from each other.Ricardo weighs more than Paula. a. Which skater, if either, has the greater momentum after the push-off? Explain. …
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What is the maximum potential difference between the disks
  Two 4.9 cm× 4.9 cm metal plates are separated by a 0.19-mm-thick piece of Teflon. (Dielectric constant for Teflon is ?paper=2.1, its dielectric strength is 60×106V/m.) a) What …
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Which of lettered spectral lines corresponds to transition
  Electron Transitions and Spectral Lines Conceptual Question The spectrum of a hypothetical atom is shown in the figure. Three distinct spectral series are shown, with the center series …
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Find the value of 15.0 n in pounds
  Solve the following question: Question: Find the value of 15.0 N in pounds. Use the conversions 1slug=14.59kg and 1ft=0.3048m. I need help to solve the above question and express your …
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What is the resistivity of the leaf tissue
Resistivity measurements on the leaves of corn plants are a good way to assess stress and overall health. The leaf of a corn plant has a resistance of 1.9M? measured among two electrodes placed 20 cm …
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At what distance from the target should the pilot drop
Question: Small-plane pilots regularly compete in "message drop" competitions, dropping heavy weights (for which air resistance can be ignored) from their low-flying planes and scoring point …
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What is the system potential energy
  Question: An object of mass m attached to a spring of force constant k oscillates with simple harmonic motion. The maximum displacement from equilibrium is A and the total mechanical energy …
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What is their speed just after he grabs her
Erica (37 kg ) and Danny (45 kg ) are bouncing on a trampoline. Just as Erica reaches the high point of her bounce, Danny is moving upward past her at 4.9 m/s . At that instant he grabs hold of her. W …
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Two identical asteroids travel side by side
  Two identical asteroids travel side by side while touching one another. If the asteroids are composed of homogeneous pure iron and are spherical, what diameter in feet must they have for the …
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Find potential difference before and after mylar withdrawn
  Question: Two 6.0mm Ã-6.0mm electrodes with a 0.10-mm-thick sheet of Mylar between them are attached to a 9.0 V battery. Without disconnecting the battery, the Mylar is withdrawn. (Ve …
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What is the initial speed of the can relative to the truck
  A farm truck moves due east with a constant velocity of 9.50m/s on a limitless, horizontal stretch of road. A boy riding on the back of the truck throws a can of soda upward and catches the …
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What is its resistance
A 12-V battery causes a current of 0.80A through a resistor. A) What is its resistance? B) How many joules of energy does the battery lose in a minute?   …
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What must radius of the plates in the designed capacitor be
Question: A 5.00 - pF parallel-plate air-filled capacitor with circular plates is to be used in a circuit in which it will be subjected to potentials of up to 1.00ï ½102V. The electric fie …
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How far is the squirrel from its initial position
  Solve the all parts of given question: Question: The position of a squirrel running in a park is given by r = [(0.280m/s)t+(0.0360m/s2)t2]i^+ (0.0190m/s3)t3j^. Part A: At 5.93s, how fa …
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Unpolarized light passes through two polarizers
  Unpolarized light passes through two polarizers in turn withpolarization axes at 45° to each other. What is the fraction ofthe incident light intensity that is transmitted?   …
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A 1280 kg car pulls a 350 kg trailer the car exerts a
  A 1280 kg car pulls a 350 kg trailer. the car exerts a horizontal force of 3.6 x 103 N against the ground in order to accelerate. What force does the car exert on the trailer? Assume an effe …
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How far the proton travel before reaching its turning point
Q. Vector has a magnitude of 7.20 units and makes an angle of 39.5° counter-clockwise from the positive x-axis. Vector has a magnitude of 8.00 units and is directed along the negative x-axis Q. …
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A picture window has dimensions of 140m x 250m and is made
  A picture window has dimensions of 1.40m x 2.50m and is made of glass 5.20mm thick. On a winter day, the outside temperature is -15.0 degrees C , while the inside temperature is a comfortabl …
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How many tanks of gas will you use to drive
  A certain fuel-efficient hybrid car gets gasoline mileage of 55.0 mpg (miles per gallon). If you are driving this car in Europe and want to compare its mileage with that of other European ca …
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Kinetic energy does the squid create by maneuver
  Squids and octopuses propel themselves by expelling water. They do this by keeping water in a cavity and then suddenly contracting the cavity to force out the water through an opening. A 7.0 …
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