The position of a particle that moves along an x axis is given by x = 2.00 t^2 + 4.00t + 30.0, with x in meters and time t in seconds. What is the velocity of the particle at t = 2.00 s?

The key to stability is feedback between the reservoir and the fluxes into and/or out of the reservoir. assume that the rate of outflow from a reservoir depends on the size of the reservoir according to the following relationship: outflow rate= k x (size of reservoir), where k is a constant. a reservoir of water has a volume of 5000 liters, and the rate of outflow at steady state is 25 liters per minute. what is k? (give both the numerical value and its units.) what is the residence time? what is the relationship between k and the residence time?

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

If a simple machine reduces the strength of a force, what must be increased?