A. Write down an equation, D(x, t), for a transverse standing wave on a stringof length L = 0.20 m that is fixed at each end, given that the antinodes are at maximum displacement at t = 0. The standing wave has wavelength λ = 0.20 m and frequency f = 400 Hz. The maximum displacement of an antinode is 0.040 m. b. What is the period T of this wave?c. Draw a sketch of the standing wave at the following times t = 0, t = T/4, t= T/2.d. What are the values of x for all antinodes?e. What are the values of x for all nodes?f. Write down the equation for the two traveling waves that make up thisstanding wave. g. What is the speed of these travelling waves?

Ablock of mass m = 2.5 kg is attached to a spring with spring constant k = 790 n/m. it is initially at rest on an inclined plane that is at an angle of 28 degrees with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is k = 0.14. in the initial position, where the spring is compressed by a distance of a = 0.18 m, the mass is at its lowest position and the spring is compressed the maximum amount. take the initial gravitational energy of the block as zero. b) if the spring pushes the block up the incline, what distance, l, in meters will the block travel before coming to rest? the spring remains attached to both the block and the fixed wall throughout its motion.

In automobile steering wheel is shown what is the ideal mechanical advantage blank? if the ama is eight what is the efficiency of the steering wheel?

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