Answer:
As they vibrate, they pass the energy of the disturbance to the particles next to them, which pass the energy to the particles next to them, and so on. Particles of the medium don't actually travel along with the wave. Only the energy of the wave travels through the medium
Navigators used astrolabes to calculate positions of the sun and stars.
Answer:
32000 m
Explanation:
1000m in 1 km, so 32000m in 32 km.
Answer:
y2 = 9y1
Explanation:
According to projectile, the formula for calculating maximum height is expressed as;
Maximum height H = u²/2g
If a ball is thrown vertically upward with an initial speed v and reaches a maximum height y1, then
y1 = v²/2g
2g = v²/y1 ..... 1
If the same ball is thrown with an initial speed 3v to reach the maximum height y2, hence;
y2 = (3v)²/2g
2g = 9v²/y2 ..... 2
Equate 1 and 2
v²/y1 = 9v²/y2
1/y1 = 9/y2
Cross multiply
9y1 = y2
Rearrange
y2 = 9y1
Hence the correct relationship between y2 and y1 is y2 = 9y1
Here is your answer.
And sorry for my mistake.
