1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
weqwewe [10]
3 years ago
12

A girl on the beach sees 8 waves pass in 4 s. If the wavelength of each

Physics
2 answers:
kipiarov [429]3 years ago
8 0

Velocity = frequency x wavelength

              = \frac{8}{4} x 1.2

              = 0.6 m/s

fenix001 [56]3 years ago
5 0

Answer:

The velocity of wave is 2.4m/s.

Explanation:

First, find the frequency using the formula :

f =  \frac{1}{t}

Let t = 4,

f =  \frac{1}{4}

f = 0.25Hz

Next, given that each wave is 1.2m and there are 8 waves so the wavelength is :

λ = 1.2  \times 8

λ = 9.6m

Lastly, you have to use velocity formula :

v = f \times λ \:

Let f = 0.25Hz,

Let λ = 9.6m,

v = 0.25 \times 9.6

v = 2.4

(Correct me if I am wrong)

You might be interested in
6. In a Circular Coil the magnetic field lines take which shape?
Alina [70]
Answer is concentric circles
3 0
3 years ago
What is the correct way to balance this equation? H2 + O2→H2O
Vsevolod [243]

Answer:

It looks like the second one is the correct answer.

8 0
2 years ago
Read 2 more answers
220V and 5A is supplied to the primary coil. The turns ratio is 500. What is the power on the secondary coil?
alisha [4.7K]

Answer: 1100 W

Explanation:

Input power  = 220(5) = 1100 W

The transformer will step up/down voltage, but will also step down/up current.

Neglecting hysteresis and other minor losses, the power will remain the same.

4 0
2 years ago
An eagle flying at 35 m/s emits a cry whose frequency is 440 Hz. A blackbird is moving in the same direction as the eagle at 10
Akimi4 [234]

Answer:

a)  F=475.7Hz

b)  F'=410.899Hz

Explanation:

From the question we are told that:

Velocity of eagle V_1=35m/s

Frequency of eagle F_1=440Hz

Velocity of Black bird V_2=10m/s

Speed of sound s=343m/s

a)

Generally the equation for Frequency is mathematically given by

 F=f_0(\frac{v-v_2}{v-v_1})

 F=440(\frac{343-10}{343-35})

 F=475.7Hz

b)

Generally the equation for Frequency is mathematically given by

 F'=f_0(\frac{v+v_2}{v+v_1})

 F'=440(\frac{343+10}{343+35})

 F'=410.899Hz

7 0
3 years ago
At room temperature ice will melt while a brass lamp will stay as a solid. This must mean that the melting point of water is ___
UkoKoshka [18]
If solid, cold metal like brass doesn't melt at room temperature like ice does, than the bass can stand much more heat then a ice cube, so it needs to be hotter to melt, so the melting point of ice is lower then brass's melting point
4 0
3 years ago
Read 2 more answers
Other questions:
  • Which circuits correctly show Ohm's law?
    12·2 answers
  • A skateboarder with mass ms = 54 kg is standing at the top of a ramp which is hy = 3.3 m above the ground. The skateboarder then
    14·1 answer
  • Chemists measure energy in units of _________ because it is based on heating water. Since most chemical reactions are doing in w
    6·1 answer
  • Why do your feet feel colder stepping on ceramic tiles than on carpet?
    5·2 answers
  • Looking for some help with this :)
    10·1 answer
  • Jill tells Bobby that the lightest element in the periodic table is Chlorine because it has an atomic number of 17. Bobby states
    6·1 answer
  • A uniform brick of length 26 m is placed over the edge of a horizontal surface. (x=26 m)
    12·1 answer
  • Does fat and soap have density? ​
    12·2 answers
  • After de Broglie proposed the wave nature of matter, Davisson and Germer demonstrated the wavelike behavior of electrons by obse
    14·1 answer
  • Why is it important that an astronomer studies physics?
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!