A book with a mass of 8 kg is at rest on a horizontal surface of a table, as shown below. The magnitude of the normal force acting on the book is -
A.8
B.40
C.80
D.100

Which of the following are considered noble gases? a. bromine b. neon c. argon d. chlorine

An air standard cycle with variable specific heats is executed in a closed system and is composed of the following four processes. 1-2 isentropic compression 100 kpa and 22°c to 600 kpa 2-3 v=constant heat addition to 1500 k 3-4 isentropic expansion to 100 kpa 4-1 p=constant heat rejection to initial state (a) show the cycle on p-v and t-s s (b) calculate the net work output per unit mass (409 kj/kg) (c) determine the thermal efficiency (47.9%)

What is a possible explanation for a set of facts that can be tested by further investigations called