Andrea, una velocista de 63.0 kg, comienza una carrera con una aceleración de 4.200 m/s2. ¿Cuál es la fuerza externa neta sobre ella?

The density of a liquid could be found by using

An ideal otto cycle has a compression ratio of 10.5, takes in air at 90 kpa and 40°c, and is repeated 2500 times per minute. using constant specific heats at room temperature, determine the thermal efficiency of this cycle and the rate of heat input if the cycle is to produce 90 kw of power.

Which compound is held together by the electrostatic force between two ions? a. co2 b. cci4 c. h2s d. mgf2