Thomson's cathode ray experiment showed that: a. protons are positively charged b. neutrons are neutral c. electrons are negatively charged d. the nucleus is neutral ! thx

What component of earth’s atmosphere exists entirely as a result of photosynthesis?

An alien spaceship is 500 m above the ground and moving at a constant velocity of 150 m/s upwards. how high above the ground is the ship after 5 seconds?

Which of the following is a characteristic shared by both electron and light microscopes? a. they both employ the use of objective lenses. b. both microscopes require an internal camera to visualize the specimen. c. both microscopes have a resolving power of 0.01 nm. d. they both utilize white light to magnify the specimen.