Pulling a wheel with a string? a bicycle wheel is mounted on a fixed, frictionless axle, with a light string wound around its rim. the wheel has moment of inertia i = k m r^2, where m is its mass, r is its radius, and k is a dimensionless constant between zero and one. the wheel is rotating counterclockwise with angular velocity omega_0, when

Alinearly polarized electromagnetic wave has an average intensity of 196 w/m^2. this wave is directed towards two ideal polarizers (in real polarizers, transmission is also effected by reflection and absorption). polarizer a is oriented with its transmission axis at an angle of θ_1=20.8∘ with the incident electric field. polarizer b has its axis at an angle of θ_2=63.0∘ with the incident electric field. what is the average intensity of the wave after it passes through polarizer a? what is the average intensity of the wave after it passes through polarizer b? suppose that the two polarizers a and b are interchanged. what would the average intensity be after passing through both polarizers?

Yvette hangs a 2.4kg bird feeder in the middle of a rope tied between two trees. the feeder creates a tension of 480 n in each side of the the rope.

Most of the volume of an atom is occupied by the