What does this infrared photograph of a toaster reveal?

a. The wavelength or frequency of the main infrared radiation emitted depends on temperature.
b. Heat flows by conduction.
c. Heat flows by convection.


a

Physics & Space Science

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Enzymes are an example of__________

A) minerals B) carbohydrates C) vitamins D) proteins

Physics & Space Science

A push on a 1-kg brick accelerates the brick. Neglecting friction, to equally accelerate a 10-kg brick requires the force to be

A) just as much. B) 10 times as much. C) 100 times as much. D) one-tenth as much. E) none of the above

Physics & Space Science

Why are reflecting telescopes cheaper to build than refracting telescopes?

What will be an ideal response?

Physics & Space Science

Which of the following is not a good conservation law?

a. Baryon conservation. b. Lepton conservation. c. Strangeness in the weak interaction. d. Strangeness in the strong interaction.

Physics & Space Science