In and electric circuit, where do the electrons come from that flow in the circuit

During a baseball game l. A hitter strikes the ball with a bat. When this happens, the ball and the bat exert a firce on each othe. Why does the ball accelerate away from the vat more than accelerates away from the ball?

If you hadto throw one of the fourtoys above, which one would take the MOST force to throw

Explain why it may make more sense to colonize on Venus, rather than Mars. Given all the positive characteristics of Venus, why has space exploration focused so much on Mars

What is the equation for rotational motion?

Would an astronauts mass change as she traveled from planet to planet? Explain.

4. An airplane must achieve a velocity of 71 m/s for takeoff. If the runway is 1000 m long, what must the acceleration be?

As the average kinetic energy of the particles in a gas increases, which of the following occurs?

Power=170 watts time=20 seconds

What is the charge of alpha, beta and gamma rays?

A pair of scissors is a complex machine. what simple machines make up a pair of scissors?