Answer:
relay switch
Explanation:
relay switch is the answer
The distance a dropped object falls, with gravity and no air resistance:
Distance = (1/2) (acceleration) (falling time)²
Without air resistance, the horizontal motion has no effect on the fall.
Acceleration of Earth gravity = 9.8 m/s²
Distance = (1/2) (acceleration) (falling time)²
Distance = (1/2) (9.81 m/s²) (3.0 s)²
Distance = (0.5) x (9.81 m/s²) x (9.0 s²)
Distance = (0.5 x 9.81 x 9.0) (m-s² / s²)
Distance = 44.15 meters
We don't care how fast the bird was flying horizontally. It doesn't change anything. (It DOES determine how far ahead of the drop point the clam hits the ground. Most problems like this ask for that distance. This one didn't.)
Answer:
Period T = 0.5 s
Frequency F = 2 Hz
Wave speed V = 4 m/s
Explanation:
Given that the
Number of oscillations = 30
Time taken = 15 seconds
The distance between two consecutive crests is called wavelength
Wavelength = 2m
Period is the ratio of time and the number of oscillations
Period T = 15/30 = 0.5 seconds
Frequency F is the reciprocal of period. That is,
F = 1/T
F = 1/0.5 = 2Hz
Wave speed V is the product of frequency and wavelength
V = 2 × 2 = 4m/s
