A heat pump that is used to heat a house has a COP of 2.5. That is, the heat pump delivers 2.5 kWh of energy to the house for each 1 kWh of electricity it consumes. Is this a violation of the first law of thermodynamics

No. it is not the violation of the first law of thermodynamics.

Explanation:

Given data

COP = 2.5

Energy delivers = 2.5 KWh

Electricity Consumes = 1 KWh

According to first law of thermodynamics the heat pump takes heat from the lower temperature & then transfer it to the higher temperature by consuming work. in this case also heat is transferred from lower temperature to higher temperature by consuming work so it is not the violation of the first law of thermodynamics.

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..

beta is electron from nucleus

something from nucleus has changed, but charge must be same for cons of charge