Cyclist A, who has constant speed 4.0 m s−1, overtakes cyclist B, who is stationary, at time t=0. 2.0 seconds later, cyclist B begins to accelerate uniformly at 1.0 m s−2.

Calculate the time at which cyclist B overtakes cyclist A.

Give your answer to an appropriate number of significant figures.

The 20@kg wheel has a radius of gyration about its center g of kg = 300 mm. when it is subjected to a couple moment of m = 50 n # m, it rolls without slipping. determine the angular velocity of the wheel after its mass center g has traveled through a distance of sg = 20 m, starting from rest.

Explain the consequences of this addiction to the brain tissue

Air initially at 0.75 bar, 1000 k, and occupying a volume of 0.12 m^3 undergoes two processes. process 1-2: the air is compressed isothermally until the volume is halved. process 2-3: the air undergoes a constant pressure process until the volume is halved again. assume ideal gas behavior. a) determine the mass of the air, in kg. b) the work and the heat transfer for each of the two processes, in kj. (100 kj = 1 bar . m^3)