Een the
are
12. A piano string having a diameter
of 0.90 mm is replaced by another
string of the same material but with
diameter 0.93 mm. If the tension of
the wire is the same as before,
(a) what is the percentage change
in the frequency of the
fundamental note?
(b) what percentage change in the
tension would be necessary to
restore the original frequency?
of
its

s in
249

If a simple machine reduces the strength of a force, what must be increased?

Can you receive a shock severe enough to prevent you from releasing the wire from an ordinary outlet with dry hands? a. no b. yes explain

Water is siphoned from a large tank and discharges into the atmosphere through a 50-mm diameter tube. the end of the tube is b = 2.6 m below the tank bottom which is a = 6.7 m deep, and viscous effects are negligible. determine the maximum height h over which the water can be siphoned without cavitation occurring. atmospheric pressure is 101.4 kpa, and the water vapor pressure is 1.79 kpa (absolute). report your answer in meters to two decimal places.