The image shows the combustion of methane. which equation represents this chemical reaction? ch4 + o2 → co2 + h2o 2ch4 + 2o2 → co2 + 2h2o ch4 + 2o2 → 2co2 + h2o ch4 + o2 → 2co2 + 2 h2o ch4 + 2o2 → co2 + 2h2o

How are momentum and impulse related? impulse is a whim to do something, while momentum keeps it going impulse is another name fore instantaneous momentum the impulse acting on and object is equal to the change of momentum it causes. the impulse that acts on and object is the momentum that results.

If element x has 99 protons how many electrons does it have

Aparticle's position is given by x = 3.00 - 9.00t + 3t2, in which x is in meters and t is in seconds. (a) what is its velocity at t = 1 s? (b) is it moving in the positive or negative direction of x just then? (c) what is its speed just then? (d) is the speed increasing or decreasing just then? (try answering the next two questions without further calculation.) (e) is there ever an instant when the velocity is zero? if so, give the time t; if not, answer "0". (f) is there a time after t = 3 s when the particle is moving in the negative direction of x? if so, give the time t; if not, answer "0".