B is your answer oscillating
Answer:
The resultant velocity of the plane relative to the ground is;
150 kh/h north
Explanation:
The flight speed of the plane = 210 km/h
The direction of flight of the plane = North
The speed at which the wind is blowing = 60 km/h
The direction of the wind = South
Therefore, representing the speed of the plane and the wind in vector format, we have;
The velocity vector of the plane = 210.
The velocity vector of the wind = -60.
Where, North is taken as the positive y or
direction
The resultant velocity vector is found by summation of the two vectors as follows;
Resultant velocity vector = The velocity vector of the plane + The velocity vector of the wind
Resultant velocity vector = 210.
+ (-60.
) = 210.
- 60.
= 150.
The resultant velocity vector = 150.
Therefore, the resultant velocity of the plane relative to the ground = 150 kh/h north.
Answer:
Amount of energy required to change the 1kg of a substance without changing its temperature.
Answer:
325 m/s
Explanation:
The velocity of waves is given as the product of wavelength and frequency of the waves. This is expressed as s=fw where s is the speed, f is frequency and w is wavelength.
Sometimes, when provided with period, you get frequency as the reciprocal of period.
In this case, since the wavelength is given as 0.013 m and frequency as 25000 then we substitute them into the equation of speed as
S=25000*0.013=325 m/s
Therefore, the speed is 325 m/s
Because when a white light goes through a clear object like the glass pyrimide it divides into the different color lights the different color lights travel in different speeds like the red light traveles faster that the purple light thats why on a rainbow the red is on the top and purple is on the bottom
HOPE THIS HELPED