Ionizing a ground state hydrogen atom requires 2.179 × 10−18 J of energy. What wavelength of light is required to ionize hydrogen and in what region of the electromagnetic spectrum is it?

Rosa records the distance that a toy car rolls and the time it takes to cover the distance. what scientific practice is this? collecting data asking a question providing explanations communicating results

What are similarities and differences between refraction, reflection, diffraction and absorption?

Amachinist turns the power on to a grinding wheel, at rest, at time t = 0 s. the wheel accelerates uniformly for 10 s and reaches the operating angular velocity of 96 rad/s. the wheel is run at that angular velocity for 40 s and then power is shut off. the wheel slows down uniformly at 1.5 rad/s2 until the wheel stops. in this situation, the time interval of deceleration is closest to: