Anet force of 100 n is moving a mass with an acceleration of 5 m/s2. what is the mass of the object? (a.)0.05 kg (b)20 kg (c)95 kg (d) 500 kg

Red light strikes a metal surface and electrons are ejected. if violet light is now used with a 10% greater intensity, what will happen to the ejection rate (number of ejected electrons per second) and the maximum energy of the electrons? a) greater ejection rate; same maximum energyb) same ejection rate; greater maximum energyc) greater ejection rate; greater maximum energyd) same ejection rate; same maximum energye) none of the above answers are correct

It is really hard for me right know

Acalorimeter uses the principle that thermal energy flows from hotter material to colder material until both reach the same