The diagram at the right is a snapshot in time of a wave moving along a rope.
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Which diagram below represents
a wave moving through the same
rope but having twice the
wavelength and twice the
amplitude?
Tap on an image to select or deselect it.

True or false graphs must include scales that increase by the same amount

It is really hard for me right know

The period of a pendulum varies directly as the square root of the length of the pendulum and inversely as the square root of the acceleration due to gravity. find the period when the length is 144 cm and the acceleration due to gravity is 980 cm per second squared, if the period is 7pi seconds when the length is 289 cm and the acceleration due to gravity is 980 cm per second squared.