Q1 some studies indicate that the upper frequency limit of

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Q1. Some studies indicate that the upper frequency limit of hearing is determined by the diameter of the eardrum. The wavelength of the sound wave and the diameter of the eardrum are approximately equal at this up- per limit.

If this is so, what is diameter of the eardrum of a person capable of hearing 2.0 × 104 Hz? Imagine 337 m/s is the speed of sound in the ear. Reply in units of m

Q2. A jeweler working with a heated 47g gold ring must lower the ring's temperature to make it safe to handle. If the ring is initially at 99 celsius, what mass of water at 25 celsius is required to lower the ring's temperature to 38 celsius?

Q3. An anchor holding a boat stationary on a river forms a 65 degree angle with the river bottom. The anchor line is 40 meters long. Assume the river has a uniform depth, how deep is the river directly below boat?

Reference no: EM13350879

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