yes it does it because the material cause it to refract and the stronger it is the more it will refract
Sound waves travel faster through <em>solids</em> than they do through gases or liquids. <em>(C) </em>They don't travel through vacuum at all.
Example:
Speed of sound in normal air . . . around 340 m/s
Speed of sound in water . . . around 1,480 m/s
Speed of sound in iron . . . around 5,120 m/s
Answer:
8 seconds
Explanation:
Answer:
Explanation:
Going up
Time taken to reach maximum height= usin∅/g
=3 secs
Maximum height= H+[(usin∅)²/2g]
=80+[(60sin30)²/20]
=125 meters
Coming Down
Maximum height= ½gt²
125= ½(10)(t²)
t=5 secs
The target heart rate for moderate-intensity activity is 80%
Answer:
Distance piston B = 3 [in]
Explanation:
This problem can be solved using the pascal principle, which is applied for both pressures and volumes. In this case we use the definition of volumes, which says that the volume displaced fluid on one side of the Pistons should be equal to the volume displaced on the other side of the piston.
We know that the volume is equal to the product of an area by a length
![V_{A}=V_{B}\\A_{A}*d_{A}=A_{B}*d_{B}\\2*6=4*d_{B}\\d_{B}=12/4\\d_{B}=3[in]](https://tex.z-dn.net/?f=V_%7BA%7D%3DV_%7BB%7D%5C%5CA_%7BA%7D%2Ad_%7BA%7D%3DA_%7BB%7D%2Ad_%7BB%7D%5C%5C2%2A6%3D4%2Ad_%7BB%7D%5C%5Cd_%7BB%7D%3D12%2F4%5C%5Cd_%7BB%7D%3D3%5Bin%5D)