Should be a Polar-Covalent bond.
Answer:
a) 1.95 m/s
b) 5.56 m
Explanation:
Given that:
Velocity of the skier
= 14.3 m/s
For the skier moving in the direction of the wave, we have:
Period (T) = 0.450 s
Relative velocity (V) of the skier in regard with the wave = 
where:
= velocity of the skier
= velocity of the wave
The wavelength
can be written as:

---------------> Equation (1)
For the skier moving opposite in the direction of the wave, we have:
Period (T) = 0.342 s
Relative velocity (V) of the skier in regard with the wave = 
The wavelength
can be written as:

------------------> Equation 2
Equating equation (1) and equation (2) and substituting
= 14.3 m/s ; we have:


Collecting the like terms; we have:







b)
The Wavelength of the wave can be calculated using : 



λ ≅ 5.56 m
Answer:
It won't stop
Explanation:
If it is a frictionless surface ....the block will not stop until another force acts on it
Answer:
A) 
Explanation:
Maximum voltage =
Maximum voltage and rms voltage are related to each other by

Drag;
Drag is the aerodynamic force that opposes an aircraft's motion through the air. Drag is generated by every part of the airplane (even the engines!). How is drag generated? Drag is a mechanical force. It is generated by the interaction and contact of a solid body with a fluid (liquid or gas).
The drag on an object depends on several variables. The most important of them, to understand the experiments you carried out is the area of the object.
The area of the object is the most important factor to understand the experiments.
Learn more about Drag on:
https://brainly.in/question/13010660
#SPJ4