A football player kicks a football off a tee with a speed of 21 m/s at an angle of 51 degrees. a. How far is the ball from the football player when it lands? b. How much farther would the ball go if he kicked it with the same speed, but at a 45 degree angle? c. Which ball will land first: the ball kicked at 21 m/s and at a 51 degree angle, or one kicked at 25 m/s and at a 65 degree angle?

These models show the electron structures of two different nonmetal elements. which element is likely more reactive, and why? element 1 is more reactive because it has fewer electron shells and is toward the top of its group on the periodic table. element 1 is more reactive because it has more electrons in its valence shell and is farther to the right on the periodic table. element 2 is more reactive because it does not have a valence shell close to the nucleus, so it will attract electrons. element 2 is more reactive because it does not have a full valence shell, so it will attract electrons.

Why do electron microscopes have higher resolving power than light microscopes?

The diagram shows four locations in the electric field of a positive point charge m. at which location is the electric potential the greatest.