Answer:
hearing range for a healthy young person is 20- 20,000 hertz. The highest frequency for a normal middle aged man is 12-14 kilohertz.
Answer:
Explanation:
We are given that
Final velocity, v=199 km/h=
1km/h=
Initial velocity, u=0
S=2000 m
We know that
Using the formula
Hence, the minimum acceleration necessary for the plane to take flight=
Through an earth-based telescope you can see Jupiter more clearly than Mars because Jupiter is much larger than Mars and through the telescope you see the larger objects more clearly.
Answer:
D
Explanation:
F = G m1 m2 / r^2 now double r
F = G m1m1/ (2r)^2
F = 1/4 G m1m2/r^2 <===== this is 1/4 of the original