Viscosity: A fluid is flowing with an average speed of 1.5 m/s through a tube that has a radius of 2.0 mm and is 18 cm long. The drop in pressure is 967 Pa. What is the viscosity of the fluid?
A. 0.0018 N ? s/m2
B. 0.0056 N ? s/m2
C. 0.028 N ? s/m2
D. 0.013 N ? s/m2
E. 0.0034 N ? s/m2
Answer: A
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A. 4.6 Hz B. 1.4 Hz C. 2.3 Hz D. 3.2 Hz
A person having a near point of 25 cm and a far point at infinity uses a converging lens of focal length 5.0 cm as a magnifying glass. What is the magnification if the person's eye is relaxed (with the image at his far point)?
What will be an ideal response?
Plane waves of ultrasound, f = 51.0 kHz, impinge on a flat plane with a 1.00-cm-wide slit. What is the total angular width (2?) of diffracted sound waves when the speed of sound in air is 340 m/s
a. 167° b. 83.6° c. 19.5° d. 41.8° e. 0.11°
Mountains tend to form in long narrow ranges because
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