A charged particle (q = −8.0 mC), which moves in a region where the only force acting on the particle is an electric force, is r

Referencing the diagram below, we can deduce from the geometry that x = 2.5 - 0.55 = 1.95 m, leading to cos θ = 1.95/2.5 = 0.78. Therefore, θ = cos⁻¹ 0.78 = 38.74°. According to the free body diagram, the tension in the chain measures 450 N. Here, F denotes the centripetal force and W signifies Dee's weight. The tension's components are as follows: Horizontal component = 450 sin(38.74°) = 281.6 N, directed to the left, and Vertical component = 450 cos(38.74°) = 351.0 N, directed upward. Answers: Horizontal: 281.6, directed left. Vertical: 351.0 N, directed upward.

The speed is V=27.24 m/s. We need to utilize the linear momentum conservation principle: The eagle's speed can be defined via two components: Since speed is a scalar quantity.

The question pertains to the change in frequency of a wave noted by an observer moving in relation to the source, indicating that the concept to invoke is "Doppler's effect."

The standard formula for the Doppler effect is:
-- (A)

Note that we don’t need to be concerned with the signs here, as all entities are moving toward each other. If something was moving away, a negative sign would apply, but that is not relevant to this scenario.

Where,
g = Speed of sound = 340m/s.
= Velocity of the observer relative to the medium =?.
= Velocity of the source in relation to the medium = 0 m/s.
=  Frequency emitted from the source = 400 Hz.
= Frequency recognized by the observer = 408 Hz.

Substituting the given values into equation (A) will yield:





Solving the above will result in,
= 6.8 m/s

The correct result = 6.8m/s