Is it true or false that because the earth has mass it also has a gravitational field

The plum pudding model of the atom states that ?

Agroup of students were investigating the force of gravity. they began by dropping a foam ball from a height of 3 meters into a bucket of sand. the ball hit the sand in 0.306 seconds. they dropped additional balls of approximately the same diameter, but of different masses. here is the data they collected. based on this experiment and the collected data, what would their conclusion be?

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