Answer:
Sound waves travels fastest in solids.
Sound waves travels slowest in gases.
Explanation:
Sound waves travels fastest in solids.
Sound waves travels slowest in gases.
Answer:
the answer is the explaination
Explanation:
Present beach erosion prevention methods include sand dunes, vegetation, seawalls, sandbags, and sand fences. Based on the research conducted, it is evident that new ways to prevent erosion must be obtained. Each way that is currently used has extensive negative effects on beaches and their natural tendencies.
F = ma = m dv/dt
F dt = m dv
integrate both sides ( assuming constant force , mass) , zero inital conditions
Ft = mv
mv = P
P = Ft = 5 * 100 = 500 N.s
Using Snell's law
we get
sin(I)/sin(r) = U2/U1
• where U2 represent the water's refractive index and U1 represent air's refractive index
thus
sin45°sin(r) = 1.33/1
1/√2*1.33 = sin(r)
1/1.88 = sin(r)
0.531 = sin(r)
thus the refractive angle is 32°
It’s used in measuring distance from earth with other celestial object. Hope this helps mark brainest
