By what factor should the length of a simple pendulum be changed if the period of vibration were to be quadrupled?
a. 16
c. 0.25
b. 4.0
d. 1/16
A
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For the heat exchanger tube and fin arrangement shown write the node equations for nodes 2 and 5. Write the equations for both implicit and explicit methods.
Energy and Momentum: A railroad car collides with and sticks to an identical railroad car that is initially at rest. After the collision, the kinetic energy of the system
A. is the same as before. B. is half as much as before. C. is one third as much as before. D. is one fourth as much as before. E. is one quarter as much as before.
AC Generator: A rectangular coil of N turns, length L = 25 cm, and width w = 15 cm, as shown in the figure, is rotating in a magnetic field of 1.6 T with a frequency of 75 Hz. If the coil develops a maximum emf 56.9 V, what is the value of N?
A. 2 B. 4 C. 6 D. 8 E. 10
In a Compton scattering experiment, what scattering angle produces the greatest change in wavelength?
A) 0° B) 45° C) 90° D) 180° E) none of the given answers