12. A rocket weighs 2000 N. Its engine's net force of 2500 N at liftoff a. What is the mass of the rocket at liftoff?
I
b. What is the rocket's acceleration when it lifts off?

Two thin 80.0- cm rods are oriented at right angles to each other. each rod has one end at the origin of the coordinates, and one of them extends along the x- axis while the other extends along the yaxis. the rod along the x- axis carries a charge of - 15.0 μ c distributed uniformly along its length, and the other rod carries 15.0 μ c uniformly over its length. find the magnitude and direction of the net electrical force that these two rods exert on an electron located at the point (40.0 cm, 40.0 cm). (e

The earth remains in orbit around the sun due to the force of gravity. how does the force of gravity exerted by the sun on the earth compare to the force of gravity exerted by the earth on the sun?

Using the free-body diagram, calculate the net force acting on the sled. is the sled in a state of dynamic equilibrium?