How did oxygen (O2) get into Earth's atmosphere?

A sensor is used to monitor the performance of a nuclear reactor. The sensor accu-rately reflects the state of the reactor with a probability of. 97. But with a probabilityof.

Which of the following is a measure of velocity? 30 m/s South 30 South 30 m/s 30 s

Calculate the force when the moment is 40nm and distance is 4m

Which statement correctly describes the formation of an electric current? A resistance causes electric charges to move from lower to higher potential. A voltage causes electric charges to move from lower to higher potential.

What is the nature of the distance time graph for motion of an object.

How long will it take you to swim 100 meters if you swim at a speed of 12.5 m/s?

What are the two factors that determine an objects gravitational potential energy

The blood plays an important role in removing heat from th ebody by bringing the heat directly to the surface where it can radiate away. nevertheless, this heat must still travel through the skin before it can radiate away.

What is most likely happens during a chemical change

A dart is inserted into a spring-loaded dart gun by pushing the spring in by a distance. For the next loading, the spring is compressed a distance. How much faster does the second dart leave the gun compared with the first