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Three balls of equal mass are fired from the same position at a height h above horizontal ground with equal speeds. The only difference between them is the direction in which they are projected: Ball A is fired straight upward, Ball B is fired straight down, and Ball C is fired horizontally. Rank, from largest to smallest, the speed of each ball at the instant (just before) it collides with the ground.
You need to prepare a 0.187mm-diameter tungsten wire with a resistance of 3.43 ohm. How long must the wire be
A magnesium surface has a work function of 3.68 eV. Calculate the maximum kinetic energy of the ejected electrons
The drawing shows a collision between two pucks on an air-hockey table. Puck A has a mass of 0.020 kg and is moving along the x axis with a velocity of +5.5 m/s. Find the final speed of puck A
A concave mirror is of hemisphjerical shape with radius 40cm. A thin layer of unknown transparent liquid is poured into mirror. The mirror liquid forms a real image and another real image is formed by the mirror alone.
Two identical metal spheres and are connected by a plastic rod. Both are at first neutral. 6.0×10^12 electrons are added to sphere , then the connecting rod is removed.
What is value of Earths magnetic field
Uniform rate of acceleration
A ball falls straight down onto a wedge that is sitting on frictionless ice. The ball has a mass of 3.11kg, and the wedge has a mass of 5.39 kg. The ball is moving the speed of v = 4.45m/s when it strikes the wedge, which is initially at rest.
For the spherical distribution: A conducting spherical shell of inner radius b and outer radius c is concentric with a small metal sphere of radius a
You bike at 10.3 m/s directly away from your neighbor\'s trumpet sound and toward the sound of another neighbor\'s trombone, What frequency is the trombonist producing
What is the total momentum of system after the collision.
Use the binomial expansion to find an approximate expression
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