A football is kicked off with an initial velocity of 9.8 m/s at an angle 450 with the horizontal. The goal keeper at a distance 38 m away in the direction of kick starts running to catch the ball at that instant . What must be his speed , if he is to catch the ball before it hits the ground

Gas cloud 1 is likely to form a star. gas cloud 2 is not. based on this information, match the given conditions with each cloud

Which accounts for an increase in the temperature of a gas that is kept a constant volume

Match each vocabulary term to its definition. 1. electrons neutral subatomic particles found in the nucleus of the atom 2. neutron lowest energy position of an electron in an atom 3. photon the path of an electron around the nucleus of an atom 4. ground state negatively charged, subatomic particles 5. protons packet of energy of specific size 6. element substance with only one type of atom 7. orbital positively charged, subatomic particles found in the nucleus of the atom