A wire that is 1.0 mm in diameter and 3.5 m long stretches 3.5 mm when an 8.0-kg tool is hung from it
(a) What is Young's modulus for the material from this wire is made?
(b) What is the effective spring constant for the stretching wire?
(a) 1.0 × 1011 Pa (b) 2.2 × 104 N/m
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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/sec
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