Help please i'll mark you the brainlest is it a b c or d don't just give me a random answer This graph depicts the motion of a car. Here, the car is _ . Question 12 options: driving forward at constant speed driving backwards at constant speed at rest accelerating

Which theory was contradicted by experiments with the photoelectric effect? light spreads out after it passes through a small opening. as soon as light strikes metal, electrons will be ejected. visible light, regardless of color, will cause the ejection of electrons when striking metal. the kinetic energy of ejected electrons depends on the frequency of light that strikes the metal.