Which of the following remains constant during the motion of a projectile fired from a planet? A. Momentum

B. Kinetic energy

C. Horizontal component of velocity

D. Vertical component of velocity

Which is the correct symbol for an isotope of iodine with 53 protons and 78 neutrons?

Explain why electric current cannot exist if a current doesn't have a voltage source.

One historical reason that people in the indian subcontinent have been reluctant to use livestock for food has been that a. their digestive systems are unable to handle meat and proteins b. they refused to eat meat in order to show resistance to british imperialism c. they are able to use cattle as a labor mainstay of their agriculture d. they can use the meat from cattle as fertilizer to make crops grow better