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What did Section 5 of the Voting Rights Act require?

Evidence shows that voter fraud is common in U.S. elections

The potential energy of a particle as a function of space is shown below. The particle starts at point “c” with zero velocity.  Which of the following statements are true? The particle’s velocity at point “d” will be zero  The particle will have zero velocity at point “f”  The kinetic energy is maximum at point “e” The particle can go beyond point “f”  The force on the particle at point “c” points to the right The force on the particle at point “e” is zero

A 3 kg mass attached to an ideal spring undergoes undamped simple harmonic motion, with a position given by

An object of mass 1 kg that is moving along the x axis experiences a net force as indicated in the graph. When located at x = 0, the object has a kinetic energy of 1000 J and is moving in the +x direction. What is the kinetic energy of the object when it reaches x = 6 m?

A person lifts an object of mass m from the bottom of a well at a constant speed of v for a time t. What is the work done by the person on the object over that duration?

Bonus question, will be graded manually. A horizontal spring with a spring constant of 400 N/m is used to launch a 1 kg block. The spring is compressed by 0.1 m.  The block slides along a frictionless plateau and then down a frictionless ramp with total change in height of h = 0.5 m. It then slides over a flat, rough region where the coefficient of kinetic friction μk is 0.5. What distance D will the block slide to in the rough region before stopping?  

A patient reports having sudden left leg pain. What additional finding(s) would indicate that the patient is experiencing a complete arterial occlusion? Select all that apply. 

A nurse is collecting a health history on a patient who complains of a severe headache. Which associated symptom(s) would be most concerning for a medical emergency?

A patient has ventricular hypertrophy due to chronic hypertension. Which heart sound will most likely be heard on auscultation?