Abaseball of mass m = 0.16 kg is suspended vertically from a tree by a string of length l = 1.4 m and negligible mass. take z as the upward vertical direction. a short-duration force f = fyj + fzk is applied to the baseball by a bat, momentarily creating a torque τ about the top of the string. enter an expression for the torque due to the given force about the top of the string, in terms of m, l, fy f , and the unit vectors i

Stars x and y are both bluish main sequence stars. star x has a higher absolute brightness than star y. how do the two stars compare? explain

Acarpenter builds an exterior house wall with a layer of wood 2.9 cm thick on the outside and a layer of styrofoam insulation 2.3 cm thick on the inside wall surface. the wood has k=0.080w/(m⋅k), and the styrofoam has k= 0.010 w/(m⋅k). the interior surface temperature is 19.0 ∘c , and the exterior surface temperature is -15.0 ∘c . a.)what is the temperature at the plane where the wood meets the styrofoam? celsius b.)what is the rate of heat flow per square meter through this wall? /m^2

Describe cytokinesis in plants and animals. in animals: in plants.