A force parallel to the x-axis acts on a particle moving along the x-axis. This force is associated with potential energy U(x) given by U(x)=αx4, where α = 0.670 J/m4 . What is the magnitude of the force when the particle is at x = -0.800 m?What is the direction of the force when the particle is at x = -0.800 m?

Me ! a 2 µc charge q1 and a 2 µc charge q2 are 0.3 m from the x-axis. a 4 µc charge q3 is 0.4 m from the y-axis. the distances d13 and d23 are 0.5 m. find the magnitude and direction of the resulting vector r. round your answer to the nearest tenth.

What is the acceleration of a spaceship that is initially at rest and then speeds up to 220 m/s in 20 seconds

Mass (kg) force (n) 5 25 10 50 15 75 20 100 a student was trying to find the relationship between mass and force. he placed four different masses on a table and pulled them using a spring scale. the table shows the different masses used in the experiment and the force required to pull each mass. the student concluded that more force was required to pull heavier objects. what comment would you make regarding his conclusion? a) no clear relation can be observed between mass and force from the data. b) there is a direct proportion between the mass and force listed in the table. c) gravity should have been taken into account while performing the experiment. d) there is an inverse proportion between the mass and force listed in the table.