Three blocks are placed in contact on a horizontal frictionless surface. a constant force of magnitude f is applied to the box of mass m. there is friction between the surfaces of blocks 2m and 3m (μs = 0.26, μk = 0.15) so the three blocks accelerated together to the right.

what is the acceleration of the blocks? (you may assume block 3m does not slide or fall off block 2m.)

what is the maximum force f that can be applied, before the 3m block slides off?

Part a)

Part b)

Explanation:

Part a)

Applied force on the block system is given as

total mass of the system is given as

now acceleration of the system is given as

Part b)

When 3M mass block just start sliding then the force of friction on it will reach to its maximum value

now the acceleration of the block is given as

now we have

answer; /// i believe that the correct answer is (c)

answer: d. a cme increases the amount of energy in the solar wind

explanation:

coronal mass ejections, also called cmes, are large clouds of plasma and magnetic field that erupt from the sun. only when the cloud is aimed at earth will the cme hit earth and therefore cause impacts. high-speed solar wind streams come from areas on the sun known as coronal holes.