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?
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249

The 10-kg double wheel with radius of gyration of 125mm about o is connected to the spring of stiffness k = 600 n/m by a cord which is wrapped securely around the inner hub. if the wheel is released from rest on the incline with the spring stretched 225 mm, calculate the maximum velocity v of its center o during the ensuing motion. the wheel rolls without slipping

What are the north and south poles of a solenoid change with?

The ability to make things happen is also called a. heat b. force c. matter d. energy