Baseball scouts use a radar gun to measure the speed of pitches. One particular model of radar gun emits a microwave signal at a frequency of 10.525 GHz (GHz = x10^9 Hz). What is the increase in frequency of these waves as seen by a 40.2 m/s fastball headed straight toward the radar gun? (Express your answer in the following format: #.# x 10^# Hz)

Explanation:

We are given that

Frequency,f=

Speed,v=40.2 m/s

We have to find the increase in frequency.

We know that

Speed of light,c=

The waves are reflected therefore the change in frequency  at the gun is equal to twice the change in frequency.

Therefore, increase in frequency=

nec chapter 5 contains

c. information on special occupancy areas

nec chapter 6 covers

a. special equipment

which of the following rules contain the words shall or shall not and must be adhered to?

b. mandatory rules

which of the following rules identify actions that are allowed but not required and typically cover options or alternative methods?

c. optional rules

which of the following serves as the introduction to the nec and provides an overview of the book?

a. nec article 90

organizations that test products for safety are

c. nrtls

the nec is published by the

a national fire protection association

the nec is divided into

b. 9 chapters

the nec provides informative annexes for

c. informational materials and examples

two terms from nec article 100 that trainees should become familiar with are

b. labeled and listed

explanation:

find the sum of the two horizontal vectors and the sum of the two vertical vectors

isoceles right angled triangle