Answer: Increases the frequency of the wave
Explanation:
Increasing the tension of a spring means increasing its stiffness. The wave produced thereafter has greater frequency.
Higher tension causes the spring to have greater restoring force causing it to quickly come back to its equilibrium position. Thus, the speed of the wave also increases.
a. slowing down.
b. changing direction.
c. speeding up.
d. none of these choices.
Answer:
changing direction
............
Answer: I would think it would be Ionic/synthesis
Explanation: Because the calcium gives up an electron to every chlorine atom resulting in Ca +.
B. 22 Hz and 42 Hz
C. 47 Hz and 55 Hz
D. 18 Hz and 26 Hz
Answer:
B. 22 Hz and 42 Hz
Explanation:
The beat is an interference pattern which occurs when two waves of slightly different frequencies meet each other. The beat is heard as a periodic variation, whose frequency (called beat frequency) is equal to the absolute value of the difference between the frequencies of the individual waves:
In this problem, we are told that 20 beats per second are produced, so the beat frequency is
Therefore, we must find the two waves which have a difference in frequency equal to this value, 20 Hz. Let's see each choice:
A. 38 Hz and 63 Hz --> --> NO
B. 22 Hz and 42 Hz --> --> YES
C. 47 Hz and 55 Hz --> --> NO
D. 18 Hz and 26 Hz --> --> NO
So, the correct choice is
B. 22 Hz and 42 Hz
Hi there!
40 N/m
We can use Hooke's Law:
F = kx or F = -kx
F = force (N)
k = Spring constant (N/m)
x = displacement (m)
We are given the force and displacement, so:
F/x = k
30/0.75 = 40 N/m