Answer:
Gravity provides a downward force, resulting in the diver going downward. They speed up like any falling object would, the pull of gravity is a dominant force. (There is a drag force – as a result of moving through the air.)
"B" When an object moves away from us, the light is shifted to the red end of the spectrum, as its wavelengths get longer.
To solve this problem we will apply the laws of Mersenne. Mersenne's laws are laws describing the frequency of oscillation of a stretched string or monochord, useful in musical tuning and musical instrument construction. This law tells us that the velocity in a string is directly proportional to the root of the applied tension, and inversely proportional to the root of the linear density, that is,
Here,
v = Velocity
= Linear density (Mass per unit length)
T = Tension
Rearranging to find the Period we have that
As we know that speed is equivalent to displacement in a unit of time, we will have to
Therefore the tension is 5.54N
A) It must have a medium.
Answer:
The higher the frequency, the shorter the wavelength. Because all light waves move through a vacuum at the same speed, the number of wave crests passing by a given point in one second depends on the wavelength. A hertz has units of 1/second. Wavelength and frequency of a wave are related by the equation Velocity = Wavelength x Frequency, where the velocity is the speed of a wave peak as it passes a stationary point. For all electromagnetic waves (in a vacuum) the velocity = c, the speed of light.
Explanation:
