The conductor consists of three segments of the same material where the diameter of B is twice the diameter of A, and the diameter of C is three times the diameter of A, and A and B have the same length but C is twice as long as A or B. What is the relationship between the resistance in segment B and in segment C

If gases like carbon dioxide and methane make up less than 1% of the total atmosphere, why is it important for scientists to monitor changes in percentages of these gases?

What distance does a car travel as its speed changes from 0 to 20 m/s in 17 s at constant acceleration?

Asolid cylinder and a cylindrical shell have the same mass, same radius, and turn on frictionless, horizontal axles. the cylindrical shell has light-weight spokes connecting the shell to the axle. a rope is wrapped around each cylinder and tied to blocks of equal masses that are held the same height above the ground. both blocks are released simultaneously. the ropes do not slip. which block hits the ground first? or is it a tie?