An electron in the n = 5 energy level of hydrogen undergoes a transition to the n = 4 energy level. What wavelength photon does the atom emit in this process?    

The atomic mass of uranium is 238.0508 u, that of thorium is 234.0436 u, and that of an alpha  particle is 4.0026 u. Determine the energy released when alpha decay converts uranium into thorium. The decay process:                    

What is the phase angle in a series RLC circuit at resonance.

The fission of U-235 begins with the absorption of a slow-moving neutron that produces an unstable nucleus U-236. Calculate the energy released in MeV carried off by the fission fragments. Reaction:           Masses:

Suppose the ray, in air with n = 1.00, enters a slab with n = 2.50 at a 45.0° angle with respect to the normal, then exits the bottom of the slab into water, with n = 1.33. At what angle to the normal does the ray leave the slab?

A series RCL circuit contains a 148-ohm resistor, a 1.50 x 10^-6 F capacitor, and a 35.7-mH inductor. The generator has a frequency of 512 Hz and an rms voltage of 35.0 V. Determine the rms current in the circuit.    

What is the wavelength (in vacuum) of the 0.186-MeV gamma-ray photon emitted by radium ? [ Note: 1 eV = 1.60 x 10^-19 J and Planck’s constant, h = 6.63 x 10^-34 J.s and the speed of light in a vacuum is 3.0 x 10^8 m/s]

The atomic mass of oxygen is 15.999 u. Convert this mass to grams.

A nurse is preparing  to administer Vancomycin 1 g by intermittent IV bolus. Available is Vancomycin 1g in 100mL of dextrose 5% water(D5W) to infuse over 45 minutes. The drop factor of the tubing is 10gtt/mL. The nurse will deliver how many gtt/min ? Round to the nearest whole number.Do NOt use trailing zeros.

Electrons carry a negative electric charge and revolve about the nucleus of the atom, which carries a positive electric charge from the proton. Th e electron is held in orbit by the force of electrical attraction at a typical distance of 1.00 × 10^–10 m. What is the magnitude of the force exist between an electron and proton?