A motorbike is going around a corner during a motor race. The centripetal force varies directly as the square of motorbike’s speed and varies inversely as the distance of the

motorbike from the center of the corner. The centripetal force, F acts on the motorbike

moving at speed v km/h at a distance r km from the center of the corner. Calculate the

centripetal force, in terms of F acted if the motor is moving at a speed of 1

3/ℎ at a distance of 2r km from the centre of the corner​

Several mountains together form a mountain . a few of these combined form a mountain system. several systems combined form a mountain , which can stretch thousands of miles in length.

Ablock of steel has a density of 0.29lbs per cubic inch. if the block has dimensions of 1 inch by 1 inch by 3 inches, what is its weight? a. 0.29lbs b. 0.58lbs c. 0.87lbs d. 1lbs

Asheet of steel 1.5 mm thick has nitrogen atmospheres on both sides at 1200oc and is permitted to achieve a steady-state diffusion condition. the diffusion coefficient for nitrogen in steel at this temperature is 6 x 10- 11 m2 /s, and the diffusion flux is found to be 1.2 x 10-7 kg/m2 -s. also, it is known that the concentration of nitrogen in the steel at the high-pressure surface is 4 kg/m3 . how far into the sheet from this high-pressure side will the concentration be 2.0 kg/m3 ? assume a linear concentration profile.