Which of the following is not a common use of microwaves?
a. cooking b. medical imaging
c. radar d. communications
b
Physics & Space Science
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Short-focal-length lenses and mirrors must be strongly curved
a. True b. False Indicate whether the statement is true or false
Physics & Space Science
A scuba diver losing her air supply while far beneath the water surface is advised when ascending to
A) hold air in her lungs. B) allow air to escape her lungs. C) panic.
Physics & Space Science
A porch roof sloping at 45° accumulated snow to a depth of 30. cm. The roof measured 3.0 m × 5.0 m. If the density of snow was 15. kg/ m2, what was the weight of the snow, in pounds, on the roof?
A) 210 lb B) 74 lb C) 56 lb D) 148 lb E) 105 lb
Physics & Space Science
Any object moving relative to Earth will have a Doppler shift when viewed from Earth
Indicate whether the statement is true or false
Physics & Space Science