Question

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

Answer 1

A typical persuasive speech begins with **something to catch the audience's attention**.

Answer 2

what is the frequency of a 7.9 * 10^-13 m wave
Formula:
Work:
Answer:

Answer 3

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.