When a force of 1600 Newtons is applied to a spring suspended from the ceiling, it stretches 2 meters. A mass of 50 kg is connected to the end of the spring and it comes to rest at its equilibrium position. The mass is then set into motion by being pushed up from its equilibrium position with a velocity of 28 m/s. (Let the positive direction be downwards.) 1. Write the equation of motion that governs the mass-spring system described above.
2. Identify the initial conditions and solve the differential equation from part (a) with the given initial conditions.

True or false: the revolution of the earth creates day and night as it rotates around the sun

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

What will a positive and a negative charge do if they are separated from each other?