How do you find the period of a wave?

According to social exchange theory, altruistic behaviors benefit the individual who performs them. t/f

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

Complete the statement about memory improvement. ( )involves organizing and breaking down information into easier groups to expand capacity. rehearsal is the verbal repetition of information. these techniques are especially important for the improvement of ( ) memory.