You feel warm from the sun at the beach because of heat radiation
Indicate whether the statement is true or false
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An alloy is produced that is 40 atomic % Ni and 60 atomic % Cu.
In this video, angular momentum is only approximately conserved. This is because
Choose one: A. there are small external forces acting—friction and air resistance, for example. B. no quantities are ever really conserved. C. the person on the platform is exerting a force when she pulls her arms in and pushes them out. D. the measurement of angular momentum depends on your reference frame.
Which of the following types of electromagnetic radiation has the smallest frequency?
a. x-rays b. visible light c. radio d. gamma-rays e. infrared radiation
A low-density, hot gas produces a continuous spectrum
Indicate whether the statement is true or false