4. A child throws a ball vertically upwards with an initial velocity of 7 ms?. Calculate the time
taken for the ball to go up and come down
again with the same height it travels.
au

What does the law of conservation of mass state?

Write a hypothesis about the effect of increasing resistance on the current in the circuit. use theformat and be sure to answer the lesson question. “how do changes in voltage or resistance affect current in an electric circuit? ”

What structural formula represents 4 electrons shared between two atoms?