One model of tennis ball launcher has advertised that it is capable of imparting 14,000J of kinetic energy to a 0.4kg ball initially at rest. A student carefully measures the compression of the spring to be 0.15m. What is the spring constant for the spring?

Write the function getkthdigit(n, k) that takes a possibly-negative int n and a non-negative int k, and returns the kth digit of n, starting from 0, counting from the right

Consider an insulating crystal, made up of layers of atoms. what form would you expect the temperature dependence of the phonon heat capacity to approach at extremely low temperatures if the interlayer coupling is i)very strong (rigid coupling), and ii) very weak. explain.

Acaregiver's love, affection, and acceptance are considered conditional if they're given only when the child is well-behaved or meets set expectations. t or f