Answer:
Labor unions were created in order to help the workers with work-related difficulties such as low pay, unsafe or unsanitary working conditions, long hours, and other situations. ... Sometimes the unions organized strikes in order to try to change the conditions of the workers.
Explanation:
Nice question. A cow has 4 udders
Answer:
2 eV
Explanation:
The energy of a photon of light is given by the formula

where
h is the Planck constant
c is the speed of light
is the wavelength of the photon
In this problem we have:


is the wavelength of the photon
Therefore, the energy in Joules is

We want to convert this energy into electronvolts: we know that the conversion factor is

Therefore,
