The work function of lithium is 2.5 eV. The maximum wavelength of light that can cause the photoelectric effect in lithium is
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a high pressure system is a dense air mass that is usually cooler and drier than the surrounding air. a low pressure system is a less dense air mass that is usually wetter and warmer than the surrounding air.

in general, areas that experience high atmospheric pressure also experience fair weather. low pressure systems can cause the formation of clouds and storms. air usually flows from areas of high pressure to areas of low pressure..

e

explanation:

there is no change in the electric potential energy as it is in rest on both conditions.

f=ma newton

f=100x2.5=250n