Please help soon! I need answers in about 20 min. The pic is below

A uniform marble (which we will take to be a solid sphere of mass m and radius R) rolls Friction Frictionless down a symmetrical hemispherical bowl, starting from rest at a height / on the left side, as shown in the figure. The left half of the bowl is rough enough to cause the marble to roll without slipping, but the right half of the bowl h Touse it is coated with oil. has no friction because it i The moment of inertia of a solid sphere of mass m and radius R about an axis through the center of mass is: - mR?. 5 a. (13 points) How far up the right side (smooth side) of the bowl will the marble go, measured vertically from the bottom? Express your answer in terms of h. b. (7 points) If the right side of the bowl were not frictionless but had the same amount of friction as the left side, the marble would return to a height h on the right side. Explain why this is different from your answer to part A