If an object sinks in water its density is greater than that of water

Apendulum has a mass of 1.5 kg and starts at a height of 0.4 m. if it is released from rest, how fast is it going when it reaches the lowest point of its path? acceleration due to gravity is g = 9.8 m/s2. a. 2.8 m/s b. 0 m/s c. 5.9 m/s d. 4.3 m/s

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

By what factor does the drag force on a car increase as it goes from 65 to 110 km/h?