【简答题】Newton's second law says: the acceleration of an object is directly proportional to the net force acting on it and is inversely proportional to its ________. (one word)
【单选题】电气控制线路的输入电路中的主令元件不包括( )
【判断题】Newton's Second Law is that the net force applied on an object will result in change of linear momentum , and equals to the first order differentiation of the linear momentum to time, that is .
【判断题】Python是一种开源、免费的高级动态编程语言。
【判断题】运动方程的基础是牛顿第二定律。The basis of the equation of motion is Newton's second law.
【单选题】某些护士留短发。因此,某些留短发的人穿白衣服。下列哪项如果是真,足以佐证以上论述的正确性?( )
【判断题】Python是一种跨平台、开源、免费的高级动态编程语言。
【判断题】Newton's Second Law in angular form is that the net torque applied on a particle is the reason for changing angular momentum l of the particle, and is given by .
【单选题】The continuity equation
A.
requires that Newton's second law of motion be satisfied at every point in the fluid
B.
expresses the relation between energy and work
C.
states that the velocity at a boundary must be zero relative to the boundary for a real fluid
D.
relates the momentum per unit volume for two points on a streamline
E.
relates mass rate of flow along a stream tube