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Question: A firework has been launched into the air and explodes into 3 pieces. Magically, the pieces explode in a two-dimensional plane parallel to the surface of the earth. A 75 gram piece flies off straight south at 23 m/s, a 25 gram piece flies off straight west at 13 m/s. If we knew the whole firework had a mass of 150 grams, what then is the speed and direction of the last piece?
A pipe of length 1.6 m is closed at one end and sustains a standing wave at its second overtone. Determine the distance between a node and an adjacent antinode.
Two balls collide in a head on, completely elastic collision. Ball #1 is .50 kg and is traveling with a speed of 4.3m/s in the positive x direction. What will the speed and direction of each ball be after the collision
Electrons in a television's CRT are accelerated from rest by an electric field through a potential difference of 2.9 kV, What is the speed of the electrons
Using reasonable TV, tube parameters, estimate the minimum possible spot size.
A Styrofoam ball of radius 35 cm falls with a terminal speed of 5.3 m/s. What is the mass of the ball
A 2.0 kilogram cart is initially at rest on a level floor. Determine the kinetic energy of the cart after a constant horizontal 8.0 newton force is applied to the cart over a distance of 1.5 meters
A straight, stiff wire of length 1.00 m and mass 21g is suspended in a magnetic field B = 0.58T. The wire is connected to an emf. How much current must flow in the wire and in what direction so that the wire is suspended and the tension in the sup..
An atom (not a hydrogen atom) absorbs a photon whose connected wavelength is λ1 and immediately emits a photon whose associated wavelength is λ2(with λ1
An electron is bound in an infinite well of width 0.10 nm. If the electron is initially in n = 8 and falls to n = 7, find the wavelength of the emitted photon.
In July 2013, a new record of power consumption in NYC was set at 13240 MW (megawatt). find how much electrical current did each person draw
A converging lens by a focal length of 20 cm is set 25 cm in front of a diverging lens with a focal length of 15 cm. An object with a height of 2 cm is set 10 cm in front of the first lens. What is the location of the final image gauged from the se..
A singly charged positive ion has a mass of 2.53 10-26 kg. After being accelerated through a potential difference of 270 V, the ion enters a magnetic field of 0.590 T, Calculate the radius of the path of the ion in the field
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