Consider a bicycle wheel that initially is not rotating. A block of mass m is attached to the wheel via a string and is allowed to fall a distance h. Assume that the wheel has a moment of inertia I about its rotation axisNow consider the case that the string tied to the block is wrapped around a smaller inside axle of the wheel of radius rB as shown in (Figure 2) . Find ωB, the angular speed of the wheel after the block has fallen a distance h, for this case. Express ωB in terms of m, g, h, rB, and I. Which of the following describes the relationship between ωA and ωB?Which of the following describes the relationship between and ?ωA>ωBωB>ωAωA=ωB

In a thunderstorm, charge builds up on the water droplets or ice crystals in a cloud. thus, the charge can be considered to be distributed uniformly throughout the cloud. for the purposes of this problem, take the cloud to be a sphere of diameter 1.00 kilometer. the point of this problem is to estimate the maximum amount of charge that this cloud can contain, assuming that the charge builds up until the electric field at the surface of the cloud reaches the value at which the surrounding air breaks down. this breakdown means that the air becomes highly ionized, enabling it to conduct the charge from the cloud to the ground or another nearby cloud. the ionized air will then emit light due to the recombination of the electrons and atoms to form excited molecules that radiate light. in addition, the large current will heat up the air, resulting in its rapid expansion. these two phenomena account for the appearance of lightning and the sound of thunder. take the breakdown electric field of air to be eb=3.00ă—106n/c. part a estimate the total charge q on the cloud when the breakdown of the surrounding air is reached. express your answer numerically, to three significant figures, using ďµ0=8.85ă—10â’12c2/(nâ‹…m2) .

You are about to open a container of soy milk but notice that there are instructions to “shake well before serving.” the soy milk is most likely a

What property of an object determines its inertia?