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The allowed energies of a simple atom are 0.00 eV, 4.25eV , and 6.64eV .
A) What wavelengths appear in the atom's emission spectrum?
B) What wavelengths appear in the atom's absorption spectrum?
A point charge q = -2.4 nC is initially at rest adjacent to the negative plate of a capacitor, What is the kinetic energy of the point charge just before it hits the positive plate
A piece of copper wire is formed into a single circular loop of radius 10 cm. A magnetic field is oriented parallel to the normal to the loop, find the average electrical energy dissipated in the resistance of the wire
A horizontal 790-N merry-go-round of radius 1.20 m is started from rest by a constant horizontal force of 45 N, Find the kinetic energy of the merry-go-round after 5.0 s
A guitar string is 90.0 cm long and has a mass of 3.27g . From the bridge to the support post (=?) is 60.0 cm and the string is under a tension of 514 N
Collision of 2 trains and stopping distances, Two trains are driving towards each other .One at 144 km/h and the other at 72 km/h When they see each other they start to brake at 1 m/s2. There is 950m between them.
What is the wavelength of radio waves. An electron in a TV is accelerated toward the screen across a potential difference of 54.2kV. How much kinetic energy does the electron gain while accelerating.
You go to a gym and lift a 245-kg mass 2.13 m over the ground? You hold it for 10 seconds. How much work you did during the holding period
A bucket of water is whirled in a vertical circle of radius 90cm,What is the least speed that will keep the water from falling out.
Two boxes A and B are connected to each end of a light vertical rope. A constant upward force 80.0 is applied to box. Starting from rest, box descends 10.4 in 3.40. The tension in the rope connecting the two boxes is 37.0
A luminous object 3.0 mm high is placed 200 mm from a convex mirror of radius of curvature 200 mm. Show that the (negative) image distance can be computed using a focal length of -100mm. Compute the image size?
An object with a height of 42 cm is placed 2.2 m in front of a concave mirror with a focal length of 0.45 m. Determine the location and magnification of the image produced by the mirror, using the mirror and magnification equations.
A luge and its rider, with a total mass of 104 kg, emerges from a downhill track onto a horizontal straight track with the initial speed of 53 m/s. suppose they stop with the constant deceleration of 2.30 m/s2.
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