If the sky appears to be completely gray during the day, what types of clouds are present?
What will be an ideal response?
Stratus
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One of the most efficient engines built so far has the following characteristics: combustion chamber temperature = 1900°C; exhaust temperature = 430°C. 7.0 × 109 cal of fuel produces 1.4 × 1010 J of work in one hour
What is the power output, in hp, of this engine?
Fast-moving electrons, moving close to c, in a strong magnetic field generate ________ radiation
Fill in the blank(s) with correct word
A single slit, 1,400 nm wide, forms a diffraction pattern when illuminated by monochromatic light of 490-nm wavelength. What is the largest angle from the central maximum at which the intensity of the light is zero?
A) 44° B) 41° C) 38° D) 35° E) 32°
The four tires of an automobile are inflated to a gauge pressure of 2.0 × 10^5 N/m2 (29 PSI). Each of the four tires has an area of 0.024 m2 that is in contact with the ground. Determine the weight of the auto