Biology, 18.02.2020 14:21, ashleyvalles16
When an electric kettle containing cold water is switched on, the water in it starts boiling after a few minutes. What is the source of the heat energy of the boiling water?
Mechanical energy from the power socket
Newly created energy that increased the total energy
Mechanical energy from the heating element in the kettle
Already existing energy that was present in some other form
Answers: 3
Biology, 22.06.2019 09:30, mckeeshallea400
Drag each tile to the correct box. the body monitors the levels of oxygen in the blood to regulate breathing. isabel is running in a marathon and is near the finish line. she feels out of breath. how will her nervous system work to generate a reaction? arrange the tiles in chronological order. isabel's breathing rate increases. sensory receptors in the arteries detect low oxygen levels. the brain sends signals through motor neurons. sensory neurons generate an impulse. the central nervous system relays an impulse to certain brain regions.
Answers: 1
Biology, 22.06.2019 15:00, NeverEndingCycle
The scales shown in the introduction measure mass, or the amount of matter in a particular object. the scientific law of conservation of mass states that matter cannot be created or destroyed during a chemical reaction, but it can change from one form to another. did the simulation support this scientific law? explain why or why not.
Answers: 1
Biology, 22.06.2019 17:00, alainacorkell5364
Your sense of touch depends upon: a. direct contact b. heat chemical c. reactions d. pain
Answers: 2
When an electric kettle containing cold water is switched on, the water in it starts boiling after a...
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