Below are sets of values for the spring constant k, damping constant b, and mass m for a particle in damped harmonic motion. which of the sets takes the longest time for its mechanical energy to decrease to one-fourth of its initial value? k = k_0, b = b_0, and m = m_0 k = 3k_0, b = 2b_0, and m = m_0 k = k_0/2, b = 6b_0, and m = 2m_0 k = 4k_0, b = b_0, and m = 2 m_0 k = k_0, b = b_0, and m = 10m_0

What structural formula represents 4 electrons shared between two atoms?

In an old-fashioned amusement park ride, passengers stand inside a 3.0-m-tall, 5.0-m-diameter hollow steel cylinder with their backs against the wall. the cylinder begins to rotate about a vertical axis. then the floor on which the passengers are standing suddenly drops away! if all goes well, the passengers will “stick” to the wall and not slide. clothing has a static coefficient of friction against steel in the range 0.60 to 1.0 and a kinetic coefficient in the range 0.40 to 0.70. part a what is the minimum rotational frequency, in rpm, for which the ride is safe? express your answer using two significant figures. f f = rpm

During a car accident, a 125kg driver is moving at 31m/s and in 1.5s is brought to rest by an inflating air bag. what is the magnitude of the change in momentum to the driver