An airliner lands with a speed of 50.0 m/s. each wheelof the
plane has a radius of 1.25 m and a moment of inertia of 110kgm^2.
at touchdown, the wheels begin to spin under theaction of friction.
each wheel supports a weight of 14000 n, and the wheels atain their
angular speed in 0.480 s while rollingwithout slipping. what is the
coefficient of kinetic frictionbetween the wheels and the runway?
assume that the speed ofthe plane is constant.

Chemical energy is a form of energy. a. heat b. kinetic c. potential d. electromagnetic

Which best describes the first law of thermodynamics as compared to the second law of thermodynamics? a. the first law describes how thermal energy is conserved but not the direction it moves. b. the first law describes the direction thermal energy moves but not how it is conserved. c. the first law describes how thermal energy can be created but not how it can be destroyed. d. the first law describes how thermal energy can be destroyed but not how it can be created.

The first-order reaction a→2b+c has rate constant 0.538 s−1. if the initial concentration of a is 0.867 mol l−1, what is the half-life of the reaction in seconds? remember to use correct significant figures in your answer (round your answer to the nearest hundredth). do not include units in your response.