Avan de graaff generator is one of the original particle accelerators and can be used to accelerate charged particles like protons or electrons. you may have seen it used to make human hair stand on end or produce large sparks. one application of the van de graaff generator is to create x-rays by bombarding a hard metal target with the beam. consider a beam of protons at 1.90 kev and a current of 4.95 ma produced by the generator. (a) what is the speed of the protons (in m/s)?

Which quantities are scalars? choose all that apply a.distance b.speed c. acceleration d.velocity

How do the measurements of charge at the different locations on the sphere compare to each other? the charge measurements are different at all locations on the sphere. the charge measurements are virtually not the same at all locations on the sphere except for the charge at the very top and at the very bottom that are equal. the charge measurements are virtually the same at all locations on the sphere except for the charge at the very top. at the top, the conductive sphere has a small disk that is made of different material. the charge measurements are the same at all locations on the sphere. what happens to the charge on the conductive sphere when it is connected to a source of charge such as the electrostatic voltage source? nothing will happen because no charge goes around the surface of the sphere. the charge on the conductive sphere spreads out over the surface of the sphere; being greater in some specific locations on the sphere. the charge on the conductive sphere spreads out uniformly over the surface of the sphere. the charge on the conductive sphere spreads out non-uniformly over the surface of the sphere.

If the radius of curvature of the cornea is 0.75 cm when the eye is focusing on an object 36.0 cm from the cornea vertex and the indexes of refraction are as described before, what is the distance from the cornea vertex to the retina? express your answer to two significant