Amodel rocket blasts off and moves upward with an acceleration of 11 m/s2 until it reaches a height of 28 m , at which point its engine shuts off and it continues its flight in free fall. what is the maximum height attained by the rocket? what is the speed of the rocket just before it hits the ground? what is the total duration of the rocket's flight?

How would doubling the made of an object change the objects potential energy

During the experiment if you could triple the breakaway magnetic force with all other quantities left unchanged, what is the new value for the critical velocity if it was v0 (initial velocity), initially? (b) now if you halved the radius with all other quantities left unchanged, what is the new critical velocity if it was v0 (initial velocity), initially? (c) if during the experiment, critical velocity quadrupled with all other quantities left unchanged, what is the new breakaway force if its magnitude was initially f0,?

Which of the following is part of the explanation or description of electromagnetic waves? (select all that apply) a. electrically charged molecules in a medium transfer their energy to nearby electrically charged molecules. b. a changing electric field causes a changing magnetic field. c. magnetic molecules in a medium transfer their energy to nearby magnetic molecules. d. a changing magnetic field causes a changing electric field.