Answer:
Explanation:
A plane flies due north (90° from east) with a velocity of 100 km/h for 2 hours.
With no wind, it will be 100*2 = 200 km north of its starting point.
But a steady wind blows southeast at 30 km/h at an angle of 315° from due east.
So the wind itself will blow the plane 30*2 = 60km at an angle of 315° from due east.
That is the same as 60*cos315° = 42.43km due east and 60*sin315° = -42.43km north.
Combining, the plane is at 42.43km due east and 200-42.43 = 157.57km due north from its starting point.
Protect your eyes
Hope I helped!
Answer:
Lenses produce images through REFRACTION but mirrors produce images through REFLECTION.
CONVEX lenses and CONCAVE mirrors focus light at a point. CONVEX mirrors and CONCAVE lenses spread light apart.
Explanation:
Refraction guides the image formation for lenses. Light rays are bent or refracted at both surfaces of the lens as they pass through it. With this, various effects can be obtained by focusing light rays on different range of curvatures of the lens.
Reflection guides the formation of images by plane and curved mirrors. Light rays change direction as they travel through a continuously changing medium. The law of reflection states that the angle of reflected ray is equal to the angle of incident ray upon reflection from a smooth surface.
A convex lens is curved outward causing the parallel light rays passing through it to be refracted inward. They meet at a focal point and focuses light at a single point likewise concave mirror.
A concave lens is curved inwards and light rays passing through it are refracted outward, spreading light apart which is also an action of convex mirror.
The characteristics of high energy wave length are:
- High Frequencies
- Short wave length
And in term of color, it will be located on the red spectrum.
