Lucy and Kim determine the height of a building by dropping a brick from its roof. The initial velocity is 0 m/s because Lucy simply lets go of the brick. Kim times the fall of the brick to be 3.5 seconds.  What is the height of the building? Also Determine the amount of time the brick is in the air if Lucy throws the brick downward with an initial velocity of -5 m/s. Round to the nearest hundredth of a second. Tysm!

How did communism reject the principles of liberalism and in what ways was this done?

I m having problem read a essay about Discuss the ideas developed by the author that an individual ignorance to their situation affect their future. 

I have all the idea I don’t know how to put all together and I having difficulty to write my conclusion.

Drawing upon the 4 aspects of alienation that Karl Marx discussed, pick two of the aspects and discuss using examples from your own life experiences in the workplace (or if you don’t have a personal experience from work, find examples from online news stories to help illustrate your two chosen aspects of alienation according to Marx). 

How was Stalin important to the cold war?

3 NO₂(g)   +   H₂O(l)   →   2 HNO₃(l)   +   NO(g)   Δ_rH = -72.0 kJ,

calculate the molar enthalpy of reaction, _rH for:

      4)  NO(g)

Calculate the displacement (magnitude and direction) of the ball when it is moved from the initial to the final position.initial position (x, y)i = (–10.0, 10.0) mfinal position (x, y)f = (15.0, –10.0) m?

point (-9,40) is on the terminal arm of an angle in standard position, length of line segment

Forces and feilds

The abiotic factors that might cause annual fluctuations in the rate of photosynthesis in a grassland ecosystem are