A helicopter flies 250 km on a straight path in a direction 60° south of east. The east component of the helicopter's
2 answers:
Answer:
The east component of the helicopter's displacement is 125 km.
Explanation:
Given:
The magnitude of displacement is,
The direction of displacement is 60° south of east.
The direction is shown in the figure below. From the figure, the horizontal component of the displacement vector is the east component.
Thus, the east component of displacement is given as:
Hence, the east component of the helicopter's displacement is 125 km.
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Answer:
223 degree
Explanation:
We are given that
Magnitude of resultant vector= 8 units
Resultant vector makes an angle with positive -x in counter clockwise direction
We have to find the magnitude and angle of the equilibrium vector.
We know that equilibrium vector is equal in magnitude and in opposite direction to the given vector.
Therefore, magnitude of equilibrium vector=8 units
x-component of a vector=
Where v=Magnitude of vector
Using the formula
x-component of resultant vector=
y-component of resultant vector=
x-component of equilibrium vector=
y-component of equilibrium vector=
Because equilibrium vector lies in III quadrant
The angle lies in III quadrant
In III quadrant ,angle =
Angle of equilibrium vector measured from positive x in counter clock wise direction=180+43=223 degree
Answer:
By electromagnetic waves.
Explanation:
The sun transfers heat to earth via electromagnetic waves in twomajor ways:
this is the transfer of energy by invisible electromagnetic ways.
The radiant sun energy warms the atmosphere and becomes heat energy. This transfer of heat through movement of fluids or usually air is called convection.