25.4 and 25.5 Frequency, wavelength, and the electromagnetic spectrum and Mathematical description of EM waves and EM wave energy BIO X-rays used in medicine The wavelengths of X-rays used in medicine range from about 8.3 × 10 − 11 m for mammography to shorter than 6.2 × 10 − 14 m for radiation therapy What are the frequencies of the corresponding waves? What assumption did you make in your answer?
25.4 and 25.5 Frequency, wavelength, and the electromagnetic spectrum and Mathematical description of EM waves and EM wave energy BIO X-rays used in medicine The wavelengths of X-rays used in medicine range from about 8.3 × 10 − 11 m for mammography to shorter than 6.2 × 10 − 14 m for radiation therapy What are the frequencies of the corresponding waves? What assumption did you make in your answer?
25.4 and 25.5 Frequency, wavelength, and the electromagnetic spectrum and Mathematical description of EM waves and EM wave energy
BIO X-rays used in medicine The wavelengths of X-rays used in medicine range from about
8.3
×
10
−
11
m for mammography to shorter than
6.2
×
10
−
14
m for radiation therapy What are the frequencies of the corresponding waves? What assumption did you make in your answer?
Interaction between an electric field and a magnetic field.
At point A, 3.20 m from a small source of sound that is emitting uniformly in all directions, the intensity level is 58.0 dB. What is the intensity of the sound at A? How far from the source must you go so that the intensity is one-fourth of what it was at A? How far must you go so that the sound level is one-fourth of what it was at A?
Make a plot of the acceleration of a ball that is thrown upward at 20 m/s subject to gravitation alone (no drag). Assume upward is the +y direction (and downward negative y).
Lab Assignment #3
Vectors
2. Determine the magnitude and sense of the forces in cables A and B.
30°
30°
300KN
3. Determine the forces in members A and B of the following structure.
30°
B
200kN
Name:
TA:
4. Determine the resultant of the three coplanar forces using vectors. F₁ =500N,
F₂-800N, F, 900N, 0,-30°, 62-50°
30°
50°
F₁ = 500N
= 900N
F₂ = 800N
Chemistry: An Introduction to General, Organic, and Biological Chemistry (13th Edition)
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