A box exerts a force of 540 N onto the floor and the bottom of the box is 0.5 m2. What is the pressure the box exerts on the floor?

Achlorine atom has 17 protons and 18 neutrons. what is its mass number? what is its atomic number?

Is the vertical component of velocity ever zero?

Atoy airplane, flying in a horizontal, circularpath, completes 10. complete circles in 30.seconds. if the radius of the plane’s circular pathis 4.0 meters, the average speed of the airplane is(1) 0.13 m/s (3) 1.3 m/s(2) 0.84 m/s (4) 8.4 m/s