A.
They’re supposed to help the person and cannot diagnose them as that is the job of a doctor
For this case we have by definition:
v = λf
We observe that we have a linear relationship, where λ is the constant of proportionality.
We have then:
- <em>v: speed of propagation of the wave
</em>
- <em>λ: wavelength
</em>
- <em>f: frequency
</em>
Answer:
The variable that is directly proportional to the frequency is λ, the wavelength.
Answer:
F= 5195.625 N
Explanation:
To obtain the force needed to hold the child, we need to know the aceleration in which the car is breaking.
Aceleration is equal to velocity divided by the time of breaking
In international system, velocity [m/s] is
v= (62 mi/h)*(1609 m/mi)*(1 h/3600 s)
v= 27.71 m/s
Now, we part the velocity by the time that is 0.08 seconds
a= v/t= (27.71 m/s)/(0.08 s)
a= 346.375 m/
The force in agreement with the Newton's second law is
F=m*a = 15 Kg*346.375 m/
F= 5195.625 N
(Note: 1 N = 1 Kg*m/)
Given: Radius of the Moon Rm = 1.74 x 10⁶ m
Mass of the Moon Mm = 7.35 X 10²² Kg
Universal Gravitational constant G = 6.67 X 10⁻¹¹ N.m²/Kg²
Required: acceleration due to gravity g = ?
Formula: g = GMm/Re²
g = (6.67 x 10⁻¹¹ N.m²/Kg²)(7.35 x 10²² Kg/(1.74 x 10⁶ m)²
g = 4.90 x 10¹² N.m²/Kg/3.0 x 10¹² m²
g = 1.63 m/s²
