the escape speed at the surface of acertain planet is twice that of the earth what is its mass in unit of earth's mass?​

Describe the path of the electric current through a circuit?

Aballet student who learns with the of his instructor is demonstrating learning.

Standing side by side ,you and a friend step off a bridge at different times and fall for 1.6s to the water below. your friend goes first, and you follow after he has dropped a distance of 2.0m. when your friend hits the water, is the seperation between the two of you 2.0m or more than 2.0m? verify your answer with a calculation.