Which statements describe isotopes? check all that apply.
answer on edge:
isotopes of the same element have the same number of protons
some isotopes are unstable
isotopes are identified by their mass number

Select light for the type of wave, adjust the wavelength so that the light is red, and increase the amplitude of the light to the max. then, select the start button at the source location to begin producing the waves. light is a form of electromagnetic wave, containing oscillating electric and magnetic fields. the wave amplitude detector mentioned above shows how the electric field oscillates in time at the location of the probe. the amplitude of the wave at the location of the probe is equal to the maximum electric field measured. how does the amplitude of the wave depend on the distance from the source?

Agust of wind pushes a beach ball with a force of 9 newtons.the ball rolls 10 meters in 3 seconds. what is the power of the wind?

Which research method uses information that governments, businesses, and educational institutions have already made available for public use? survey correlational research cross-cultural research secondary analysis