A rocket weighing 300,000 N is taking off from earth with a total thrust of 460,000 N at an angle of 20 degrees, as shown in the image below. What is the approximate vertical component of the net force that is moving the rockets away from Earth?

Two resistors r1 and r2 may be connected either in series or parallel across an ideal battery with emf ε. we desire the rate of energy dissipation of the parallel combination to be 8.75 times that of the series combination. if r1 = 105 ω, what are the (a) smaller and (b) larger of the two values of r2 that result in that dissipation rate?