Acceleration = Change in Velocity / time
a = (v - u) / t
Where v = final velocity in m/s
u = initial velocity in m/s
t = time in seconds.
a = acceleration in m/s²
A proper record of the changes in velocity with the corresponding time would help find the acceleration.
The approximate speed of the sound wave traveling through the solid material is 1012m/s.
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Wavelength, Frequency and Speed</h3>
Wavelength is simply the distance over which the shapes of waves are repeated. It is the spatial period of a periodic wave.
From the wavelength, frequency and speed relation,
λ = v ÷ f
Where λ is wavelength, v is velocity/speed and f is frequency.
Given the data in the question;
- Frequency of sound wave f = 440Hz = 440s⁻¹
- Wavelength of the wave λ = 2.3m
To determine the approximate speed of the wave, we substitute our given values into the expression above.
λ = v ÷ f
2.3m = v ÷ 440s⁻¹
v = 2.3m × 440s⁻¹
v = 1012ms⁻¹
v = 1012m/s
Therefore, the approximate speed of the sound wave traveling through the solid material is 1012m/s.
Learn more about Speed, Frequency and Wavelength here: brainly.com/question/27120701
On the floor because the force from the train moving and she wouldn't be able to catch it in time
Answer:
net work done by friction = - 2205 J
Explanation:
given,
mass of sled = 80 kg
slide down at an angle of 18°
length = 90 m
travel horizontally = 20 m before starting back up a 16° incline.
net work = ?
net work done by friction = change in potential energy
= mg (h_f - h_i)
= (75) (9.8) (- 27.81 + 24.81)
net work done by friction = - 2205 J
