An atom in an excited state of 4.7 eV emits a photon and ends up in the ground state. The lifetime of the excited state is 1.3 ✕ 10^-13 s. Required:
a. What is the energy uncertainty (in eV) of the emitted photon?
b. What is the spectral line width (in wavelength) of the photon?

Which of the following represents an upside-down image? o a. +doo b. -doo c. +mo d.-m

The graph represents the distance a car travels over time while on the highway. which statement about the car's trip is accurate? a) the car does not move over time. b) the car travels at a constant velocity. c) the car's velocity increases constantly over time. d) the car's velocity decreases constantly over time.

The freezing and boiling point of a substance changes as the air pressure around it changes. for example, at a lower air pressure (higher altitude) it is easier for water molecules to escape from liquid into the air. in a high altitude city such as denver, colorado compared to a sea-level city such as houston, texas, water