A student holds the axis of spinning bicycle wheel seated on pivoted stool the student and stool are initial at rest while the wheel is spinning in a horizontal plan with an initial angular momentum L0 pointing up. Explain what happens if the wheel is inverted about its centre by 180

By what factor does the drag force on a car increase as it goes from 65 to 110 km/h?

Aleaky 10-kg bucket is lifted from the ground to a height of 15 m at a constant speed with a rope that weighs 0.7 kg/m. initially the bucket contains 45 kg of water, but the water leaks at a constant rate and finishes draining just as the bucket reaches the 15-m level. find the work done. (use 9.8 m/s2 for g.) show how to approximate the required work by a riemann sum. (let x be the height in meters above the ground. enter xi* as xi.) lim n → ∞ n (9.8)(45−3 xi) i = 1 δx express the work as an integral. 0 dx evaluate the integral. (round your answer to the nearest integer.) j

Am i correct on these two physics questions?