Vary the mass of the skateboarder using the slider. Using several different values for mass, drag the skateboarder to the top of the ramp. How does her mass affect the amount of potential energy she gains when she reaches the top of the ramp?

Which atomic model was proposed as a result of j. j. thomson’s work?

In which of the following would the particles move most rapidly? a. ice at -20 °c b. water at 20 °c c. steam at 110 °c d. boiling water e. ice at 0 °c

Light traveling in water, nwater = 1.33, strikes a plastic block at an angle of incidence of 51.4°; part of the beam is reflected and part is refracted. if the index of refraction of the plastic is 2.0, what is the angle made by the reflected and refracted beams?