A certain comet of mass 3 × 1015 kg at its closest approach to the Sun is observed to be at a distance 5.8 × 1011 m from the center of the Sun, moving with speed 23000 m/s. At a later time the comet is observed to be at a distance 40.9 × 1011 m from the center of the Sun, and the angle between and the velocity vector is measured to be 10.33°. What is ?

When the force acting on an object points at least partially in the direction of the motion the work done is considered to be negative

A3.9 g aluminum foil ball with a charge of +4.1×10−9 c is suspended on a string in a uniform horizontal e⃗ field. the string deviates to the right and makes an angle of 30∘ with the vertical. part a part complete what information about the e⃗ field can you determine for this situation? what information about the field can you determine for this situation? only the magnitude of e⃗ only the direction of e⃗ both the magnitude and the direction of e⃗ none of the above previous answers correct part b determine the magnitude of the electric field. express your answer with the appropriate units. e e = nothing nothing request answer part c determine the direction of the electric field. determine the direction of the electric field. to the right to the left away from you toward you

Aprotein molecule in an electrophoresis gel has a negative charge. the exact charge depends on the ph of the solution, but 30 excess electrons is typical. what is the magnitude of the electric force on a protein with this charge in a 1600n/c electric field? write in two significant numbers, and also in newton