What is the velocity of the bullet-block system after the bullet embeds itself in the block?

Is there a point between a 10 nc charge and a 20 nc charge at which the electric field is zero?

Which of the following is another term for a planned economy

To solve a problem using the equation for kepler ‘s third law , enrico must convert the average distance of mars from the sun from meters into astronomical units . how should he make the conversion ?