What is the range of a projectile launched at an angle of 50° with the horizontal with an initial speed of 15 m/s?

The percent efficiency of a machine can never be 100% (or greater), because in the real world some energy is always converted into a. heat b. work c. input force d. output force

Explain what it means to view something from a frame of reference. provide an example that illustrates your explanation. (4 points)

How many neutrons does plutonium -196 with an atomic number of 78.