Vertically up and then back down again. how does the vertical speed of the point compare to the speed of the wave? • the speed of the point equals the speed multiplied by the wavelength and divided by the string's length.• the wave speed equals the point speed multiplies by the wavelength and divided by the string's length.• the speed of the point is 2 times greater than the wave speed.• the speed of the point could be neglected compared to the wave speed.• the wave speed could be neglected compared to the speed of the point.• the speeds could not be uniquely compared, because there is no fixed relationship between them.

Very large accelerations can injure the body, especially if they last for a considerable length of time. one model used to gauge the likelihood of injury is the severity index ( ), defined as =/ . in the expression, is the duration of the accleration, but is not equal to the acceleration. rather, is a dimensionless constant that = the number of multiples of that the acceleration is equal to.in one set of studies of rear-end collisions, a person's velocity increases by 13.7 km/h with an acceleration of 36.0 m/s2 . let the + direction point in the direction the car is traveling. what is the severity index for the collision?

What is the angular momentum of the bar about the axle?

An object with initial temperature 130 ∘ f is submerged in large tank of water whose temperature is 50 ∘ f . find a formula for f ( t ) , the temperature of the object after t minutes, if the cooling constant is k = − 0.2 . remember newton's law of cooling (the rate of change of temperature with respect to time is equal to k times the difference between the temperature of the object and the surrounding temperature) ! : )