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A triply ionized beryllium ion, Be^3+ (a beryllium atom with three electrons removed), behaves very much like a hydrogen atom, except that the nuclear charge is four times as great.
a) What is the ground-level energy of the beryllium?
b) What is the ionization energy of the beryllium?
c) For the hydrogen atom, the wavelength of the photon emitted in the n = 2 to n = 1 transition is 122 nm. What is the wavelength of the photon emitted when a Be^3+ ion undergoes this transition?
A point source of source emits a tone with a power of 45 W that has a frequency of 429 Hz. calculate the pressure amplitude in Pascals of the sound
Find the change in speed of a rock thrown straight down from the top of the wall at an initial speed of 7.90 m/s and moving between the same two points
Two meters from the left end is the 500 N washing equipment. Joe is 0.500 m from the right end and weighs 920 N. Given that the scaffold is in rotational and translational equilibrium, illustrate what are the forces on each cable?
A circular coil of wire with 70.0 Loops and a radius of 0.250 m is placed in a magnetic field of 10.0 T and oriented so that the coil is perpendicular to the field. Find the maximum power developed in the coil
After the Sun exhausts its nuclear fuel, its ultimate fate might be to collapse to a white dwarf state. In this state, it would have about the same mass as it has now, but its radius would be equal to the radius of the Earth.
Two negative charges, Q = -30 \mu C are placed on the x-axis at x = +0.25 m and x = -0.25 m. How much energy does it take to assemble these two charges
q1. runner a is at first 5.4 km west of a flagpole and is running with a constant velocity of 2.6 kmh due east. runner
A dentist wants a small mirror that, when 3.00 cm from a tooth, will produce a 4.5X upright image. What must its radius of curvature be
a u-tube contains mercury with a density of 13,600 kg/m^3. it is open on one end, and the other end is connected to a boiler, what is the gauge pressure at point A in the boiler
A 1.1 kg birdfeeder hangs from a horizontal tree branch. The birdfeeder is attached to the branch at a point that is 1.0 m from the trunk. where the branch attaches to the trunk
Physics - Potential Energy - Gravitational Force A satellite has a mass of 100 kg and is located at 2.00 x 10^ 6 m above the surface of earth. (A) What is the potential energy associated with the satellite at this location?
Under the influence of its drive force, a snowmobile is moving at a constant velocity along a horizontal patch of snow. When the drive force is shut off, the snowmobile coasts to a halt.
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