The law of reflection states that the angle of reflection is equal to the angle of Incidence .
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.
Σ/ε
σ = F/A
ε = ΔL/L
F = force
A = area
L = lenght
ΔL = |old lenght - new lenght|
Human ear can hear only the sounds having frequency from 20 Hz-20,000Hz but the simple pendulum produces a sound having frequency much less than 20Hz so we cannot hear it.
Answer:
Approximately 8years
Explanation:
1 year is 365 days and since there are 24 × 60 minutes in a day, then there will be 24 × 60 × 365 minutes in a year, which is 525,600 minutes in one year.
Since one year makes 525609minues, then according to the question, in 4.25 x 10^6 minutes (4250000minutes), there will be:
4250000 ÷ 525600
= 8.08
Approximately there will be 8 years in 4.25 x 10^6 minutes
