Achild pushes a toy box across the floor in 5 seconds. if he did 30 j of work on the toy box, what amount of power was required to complete this action? 6 watts 25 watts 150 watts 35 watts

Ablock of mass m = 2.5 kg is attached to a spring with spring constant k = 710 n/m. it is initially at rest on an inclined plane that is at an angle of θ = 23° with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is μk = 0.19. in the initial position, where the spring is compressed by a distance of d = 0.16 m, the mass is at its lowest position and the spring is compressed the maximum amount. take the initial gravitational energy of the block as zero. a) what is the block's initial mechanical energy? b) if the spring pushes the block up the incline, what distance, l, in meters will the block travel before coming to rest? the spring remains attached to both the block and the fixed wall throughout its motion.

Describe the function of the endomembrane system? what organelles are involved?

Arrange the images in order to show how lake-effect snow occurs.