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omeli [17]
4 years ago
11

Waves bounce back when they meet a surface. This phenomenon is called...

Physics
1 answer:
tamaranim1 [39]4 years ago
4 0

Answer:

A reflection

Explanation:

Reflection – when a wave hits a surface, any part of the wave that cannot pass through the surface bounces back. This interaction with a surface is called reflection.

Another way to explain it is

Reflection occurs when waves bounce back from a surface they cannot pass through.

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An airplane leaves New York to fly to Boston it travels 1000 KM in two hours what is the average speed of the airplane
Korolek [52]

Answer: 500 KM per hour

Explanation:

5 0
3 years ago
Vector A has magnitude 8.00 mm and is in the xy-plane at an angle of 127∘ counterclockwise from the +x–axis (37∘ past the +y-axi
Ilia_Sergeevich [38]

Answer:

-75.35°

Explanation:

Let C be the sum of the two vectors A and B. Hence, we can write the following  

A_{x} +B_{x} =C_{x} ......(1)\\A_{y} +B_{y} =C_{y} ......(2)

but since the vector C is in the -y direction, C_{x}  = 0 and C_{y} = —12 m.  

Thus  

B_{x} =-A_{x} =-[-Acos(180-127)]=(8)*cos(53)\\B_{x} =4.81m

similarly, we can determine B_{y} by rearranging equation (1)  

 B_{y} =C_{y} -A_{y} =-12m-[(8)*sin(53)\\B_{y} =-18.4m

so the magnitude of B is

B=\sqrt{B_{x}^2+B_{y}^2  } \\B=19m

Finally, the direction of B can be calculated as follows  

Ф=tan^{-1} (\frac{B_{y} }{B_{x} } )\\=-75.35

hence the vector B makes an angle of 75.35 clockwise with + x axis

8 0
4 years ago
Which branch of physics deals with the study of force, energy, and motion?
Leya [2.2K]

Awns

A  acoustics

Explanation:

6 0
4 years ago
Read 2 more answers
The Texas Star Ferris wheel is the most popular ride at the Texas State Fair. It has a radius of 65.8 meters. What is the tangen
Alenkasestr [34]

Answer:

The  tangential velocity for the cars are approximately 2.3 m/s

Explanation:

The given parameters are;

The radius of the Texas Star Ferris wheel, r = 65.8 mete secondsrs

The time it takes the Ferris wheel to go round once = 180 seconds

The angular velocity, ω = Change in angle rotated/(Time duration of the change)

ω = Δθ/Δt = 2·π/180

The tangential velocity for the cars, v_t = ω·r = 2 × 3.14/180 × 65.8 ≈ 2.3 m/s

The  tangential velocity for the cars, v_t ≈ 2.3 m/s.

3 0
3 years ago
You're reading an article about forest fires in california and it features a photograph of firefighters battling a fire on a hil
Lelechka [254]
I will say it is about 20 m/s

7 0
3 years ago
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