Light waves of frequency 6 x 10∧14 Hz have a wavlength of 3.75 x 10∧-7m in water. What is their speed in water? Please? Need help quickly. Thx!

In a good thermo flask the main cause of heat loss is

Avoltaic cell converts chemical energy to

Aphoton is absorbed by an electron that is in the n = 3 state of a hydrogen atom, causing the hydrogen atom to become ionized. very far away from the nucleus, the released electron has a velocity of 750,000 m/s. what was the wavelength of the absorbed photon?