8. identify criteria some students in your
science class have made a poster with a
photograph showing several stationary circular
ripples in a coffee cup. they have labeled the
distance from the rim of the cup to the center
as the wavelength of the sound wave. what
error did they make?

Ineed ideas for how to have fun with my friends i feel like they dont like me

What is the difference between the idea of stare decisis and something being constitutional?

Pj conducts an experimental study on the effects of soft music during high stakes science testing. he randomly assigns students at the school. in one condition he does not provide music for testing while in the other group he does provide the music. he administers a pretest at the beginning of the year and a posttest at the end of the year. pj’s design is best described as a: a.static group comparisonb. pretest-posttest control group designc.control-group-time-series designd. nonrandomized control-group pretest-posttest design