Answer:
a) λ = 1.12 m
b) f = 5.41 Hz
c) v = 154.54 m/s
d) A = 0.22m
e)
Explanation:
You have the following equation for a wave traveling on a cord:
(1)
The general expression for a wave is given by:
(2)
By comparing the equation (1) and (2) you have:
A: amplitude of the wave = 0.22m
k: wave number = 5.6 m^-1
w: angular velocity = 34 rad/s
a) The wavelength is given by substitution in the following expression:
b) The frequency is:
c) The velocity of the wave is:
d) The amplitude is 0.22m
e) To calculate the maximum and minimum speed of the particles you obtain the derivative of the equation of the wave, in time:
cos function has a minimum value -1 and maximum +1. Then, you obtain for maximum and minimum velocity:
Answer:
The person inside the train would see the ball moving straight vertical upward and then vertically downwards also because for a person inside the train, there is only one velocity that could act on the ball and this velocity is downwards.
On the other hand, the person outside the train would see the ball appear to move along the parabolic path because the ball to this person would have two velocities acting on it: the vertical and horizontal components of velocity.
Explanation:
Answer:
An increase in frequency
Explanation:
A photon is an electromagnetic radiation without mass,as the energy of a photon is increased it frequency also increases.
Consider the equation below.
Energy = hf
We're h= is the Planck constant.
F is the frequency measured in Hertz from this a direct relationship exist between the energy and frequency
The acceleration of the dragster is 8.89 m/s².
To find the acceleration, the given values are,
V₀ = 85 m/s
V = 45 m/s
<h3>What is acceleration?</h3>
- Acceleration is a rate of change of velocity with respect to time with respect to direction and speed.
- Acceleration formula can be written as,
`
a = acceleration
v = final velocity
v₀= starting velocity
t = time
- Acceleration is a vector quantity.
- The unit of acceleration is m/s².
Substituting the given values in the formula,
a = (V-Vo)/time
= (45-85m/s)/4.5 s.
a = 8.89m/s².
Thus, the acceleration a of the dragster is 8.89 m/s².
Learn more about acceleration,
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