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(a) Find the energy of the electron in the ground state oftriply ionized beryllium, which has an atomic number Z =4.
eV
(b) Find the radius of its ground-state orbit.
m
Two 27.0 cm focal-length converging lenses are placed 16.5 cm apart. Where will the final image formed by the second lens be located
Use the worked example above to help you solve this problem. Figure a shows a simple apparatus for demonstrating resonance in a tube. Find the wavelength and the next two air-column lengths giving resonance
how does friction applied to the hot wheels track, Why would 20 degrees have a higher range (delta x) than 15-20 degrees
A transparent film has a thickness of 0.003250 cm, and a refractive index of 1.4000. Find the order of interference at theta=0 degrees
Light with a wavelength of 618 nm passes through a slit 7.52 wide and falls on a screen 1.88 m away. compute the linear distance on the screen from the central bright fringe to the first bright fringe above it.
A violin string 12.5 cm long and fixed at both ends oscillates in its n = 5 mode. The speed of waves on the string is 268 m/s, and the speed of sound in air is 348 m/s. What are (a) the frequency and (b) the wavelength of the emitted sound wave?
A 0.16kg baseball is hit into the air. When its 6.68 meters above the ground traveling 17.2 m/s at a 55 degree angle. What is its mechanical energy?
A 4.4 cm tall object is placed 27 cm in front of a convex spherical mirror. Find the distance, di, of the image (cm), the focal length of the mirror (cm), and the radius of curvature of the mirror (cm)
A rifle is aimed horizontally at a target 50 m away. The bullet hits the target 2.0 cm below the aim point. What is the bullet's flight time
The rotor in a certain electric motor is a flat, rectangular coil with 85 turns of wire and dimensions 2.25 cm by 4.36 cm. The rotor rotates in a uniform magnetic field of 0.800 T. What is the average power of the motor
A "swing" ride at a carnival consists of chairs that are swung in a circle by L = 14.2 m cables attached at an angle of ? = 62.7° to a vertical rotating pole. Calculate the tension in the cable attached to the chair
An electron is accelerated through a potential difference of 3.00 V before colliding with a metal target. What minimum-wavelength light can such an electron emit
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