The corrective lenses of a person suffering from which vision ailment could be used to start a fire?
A. Myopia
B. no eyeglass lenses can be used to make a fire.
C. astigmatism
D. hyperopia
E. cataracts
D. hyperopia
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The average density of each planet in the solar system is determined by taking its mass and dividing that by its:
A) radius. B) diameter. C) surface area. D) radius squared. E) volume.
Determine the rms voltage for the circuit.
A. 99 V (rms) B. 140 V (rms) C. 196 V (rms) D. 70 V (rms) E. 110 V (rms)
What is the energy, in eV, of a photon of wavelength 550. nm?
What will be an ideal response?
A steel stack of 4 m diameter is 60 m high and is used to exhaust gases that are at an average temperature of 600ºC. The stack wall temperature is 1000 when the surrounding air temperature is 20ºC. Estimate the stack gas velocity.
What will be an ideal response?