Answer:
Tension in Cord=174 N
Explanation:
Given Data
L (Phone Cord Length)=4.89 m
m (Cord Mass)=0.212 Kg
T (Time for four trips)=0.617 s
Tension=?
Solution
V=λ×f
Answer:
1.53 cm
Explanation:
The relationship between wavelength and frequency for a wave is:
where
v is the speed of the wave
f is the frequency
is the wavelength
In this problem, we have:
is the frequency of the ultrasound wave
is the speed of sound in sea water at room temperature
Re-arranging the previous equation and solving for , we find the wavelength of the ultrasound wave:
Answer:
17 N
Explanation:
Constant velocity means acceleration is 0.
If acceleration is 0, then the net force is 0. Which means the i components add up to 0, the j components add up to 0, and the k components add up to 0.
0 = 2.0 N − 8.0 N + Fi
Fi = 6.0 N
0 = 4.0 N + 9.0 N + Fj
Fj = -13 N
0 = -2.0 N − 8.0 N + Fk
Fk = 10. N
The magnitude of the force is:
F² = Fi² + Fj² + Fk²
F² = (6.0 N)² + (-13 N)² + (10. N)²
F = √305 N
F ≈ 17 N
The wavelengths of the light are 4.3 * 10^-12 m and 0.2 m respectively.
<h3>What is wavelength?</h3>
The term wavelength has to do with the horizontal distance that is covered by a wave. We know that a long wavelength implies that the wave is able to travel a long distance from one point to another.
Given that;
c = λf
c = speed of light
λ = wavelength of ight
f = frequency of light
Thus;
λ = 3 * 10^8/ 7.00 x 10^19
λ = 4.3 * 10^-12 m
λ = 3 * 10^8/1.50 x 10^9
λ = 2 * 10^-1 or 0.2 m
Learn more about wavelength:brainly.com/question/13533093
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Missing parts:
What are the wavelengths of electromagnetic wave in free space that have the following frequencies? (a) 7.00 x 10^19 Hz______ pm (b) 1.50 x 10^9 Hz__________ cm