A typical persuasive speech begins with something to catch the audience's attention.
What does a typical persuasive speech begin with? (1 point)
• a set of facts that are meant to support the claim
• a counterclaim with facts that undermines the speech's premise
• something to catch the audience's attention
• an unpopular claim that the speaker supports
3 answers
what is the frequency of a 7.9 * 10^-13 m wave
Formula:
Work:
Answer:
Formula:
Work:
Answer:
To find the frequency of a wave, you can use the formula that relates the speed of light (c), wavelength (λ), and frequency (f):
\[ c = f \times \lambda \]
Where:
- \( c \) (the speed of light) is approximately \( 3.0 \times 10^8 \) m/s.
- \( \lambda \) is the wavelength in meters.
- \( f \) is the frequency in hertz (Hz).
Given:
- Wavelength \( \lambda = 7.9 \times 10^{-13} \) m.
Rearranging the formula to solve for frequency \( f \):
\[ f = \frac{c}{\lambda} \]
Now plug in the values:
\[ f = \frac{3.0 \times 10^8 \text{ m/s}}{7.9 \times 10^{-13} \text{ m}} \]
Calculating:
\[ f = \frac{3.0 \times 10^8}{7.9 \times 10^{-13}} \]
\[ f \approx 3.7975 \times 10^{21} \text{ Hz} \]
Answer: The frequency of the 7.9 × 10^-13 m wave is approximately \( 3.8 \times 10^{21} \) Hz.