For questions 1-10 fill in the blank with the letter of the description that best matches the term

a. the player responsible for the area between 2nd and 3rd base
b. the player on the mound in the middle of the field
c. the player positioned behind home plate
d. occurs when a fielder fails to make a play
e. a ball hit outside the 1st or 3rd base lines
f. a pitch thrown outside the strike zone
g. area over home plate between the armpits and the knees
h. a pitcher can throw three of these to get a batter out
i. the official behind home plate
j. when a pitcher throws out a base runner

1. catcher

2. strike

3. ball

4. strike zone

5. umpire

6. foul ball

7. pick-off

8. pitcher

9. error

10. shortstop

Which notation is used to represent an alpha particle? a. b. c. d.

Apulley system is used to lift a 2,000 newton engine up a distance of 3 meters. the operator must apply a force of 250 newtons to the chain of the pulley system to lift the motor. to lift the engine 3 meters, the operator must pull a total of 30 meters of chain through the pulley system. what is the value of di?

To understand the electric potential and electric field of a point charge in three dimensions consider a positive point charge q, located at the origin of three-dimensional space. throughout this problem, use k in place of 14? ? 0. part adue to symmetry, the electric field of a point charge at the origin must point from the origin.answer in one word.part bfind e(r), the magnitude of the electric field at distance r from the point charge q.express your answer in terms of r, k, and q. part cfind v(r), the electric potential at distance rfrom the point charge q.express your answer in terms of r, k, and q part dwhich of the following is the correct relationship between the magnitude of a radial electric field and its associated electric potential ? more than one answer may be correct for the particular case of a point charge at the origin, but you should choose the correct general relationship. a)e(r)=dv(r)drb)e(r)=v(r)rc)e(r)=? dv(r)drd)e(r)=? v(r)r