Problem 4 (25 points) Consider the following initial value problem associated with the response of a nonlinear spring written in non-dimensional state-space form:                         du / dt = v                         dv / dt = -ω2 ( 1 + ( u / ubar )2 )                                                                          with ω = 1 and ubar = 2 The initial conditions are specified as u(0) = 1 and v(0) = -1 Perform the first two steps of a second order Runge-Kutta method with a step size of Δt = 0.10 to determine approximate solutions at time t = 0.20 Note: This step size is only for illustrative purposes. In practice, a much smaller Δt  would be selected.

Q3:  What are some of the recent developments in technology for teaching foreign/second languages? Discuss at least three of these that you would use, and present arguments for using them in light of what we know about theories of second language acquisition and how these technologies can support the acquisition process.

Which part of the cell directs the cell’s activities ?

These statements are about the integumentary system. Which is correct?

Chyme moves through the small and large intestine by:

Heart rate, breathing and blood vessel size are controlled by the:

Where are blood vessels, nerves, sweat and oil glands, and hair roots found?

The point at which two or more bones meet is:

Too little thyroid hormone results in which of the following?

Palmar interossei are innervated by the __________ nerve.