Sorry if it’s not a good pic but...What’s the answer?!?

(apex) when a cup of water is dropped, as the cup falls, the water in the cup falls out true or false?

What type of reaction fuels the processes seen here?

The activation energy for the reaction no2(g)+co2(g)⟶no(g)+co(g) is ea = 300 kj/mol and the change in enthalpy for the reaction is δh = -100 kj/mol . what is the activation energy for the reverse reaction?