What is the total amount of heat energy released when 200 grams of water is cooled from 50.0oC to 25.00oC?

Two friends at different locations want to communicate with each other by sending low energy signals. which of the following methods can they use to communicate? a) produce x-rays using colliding electrons and send them to radios, which capture sound b) send messages using infrared radiation, which travel in the form of waves c) send radio waves through intervening media like radio and television d) produce sound waves using microwaves from heated objects

What type of electromagnetic radiation has a shorter wavelength than blue light

Which of the following best supports the concept that genetic information is passed on to offspring from both of their parents, not just one?