Acertain processor has access to three levels of memory. the access time of level 1 memory is 10 ns. the access time of level 2 memory is 50 ns. the access time of level 3 memory is 200 ns. assume the hit ratio of level 1 is 0.8. the hit ratio of level 2 is 0.95. if a word to be accessed is in level 1 memory, it can be accessed directly; if it is in level 2, then it is first transferred to level 1 memory and then accessed by the processer; if it is in level 3, it is first transferred from level 3 to level, then from level 2 to level 1, and then accessed by the processer. what is the average memory access time?

The metric unit of electrical power is the watt volt ampere ohm

Red light strikes a metal surface and electrons are ejected. if violet light is now used with a 10% greater intensity, what will happen to the ejection rate (number of ejected electrons per second) and the maximum energy of the electrons? a) greater ejection rate; same maximum energyb) same ejection rate; greater maximum energyc) greater ejection rate; greater maximum energyd) same ejection rate; same maximum energye) none of the above answers are correct

Aperson gives a shopping cart an initial push along a horizontal floor to get it moving, and then lets go. the cart travels forward along the floor, gradually slowing as it moves. consider the horizontal force(s) on the cart while it is moving forward and slowing. which of the following statements is correct? (a) both a forward and a backward force are acting on the cart, but the forward force is larger. (b) only a forward force is acting which diminishes with time. (c) both a forward and a backward force are acting on the cart, but the backward force is larger. (d) only a backward force is acting, no forward force.