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BigorU [14]
3 years ago
14

What happens to the frequency of a wave if its energy increases?

Physics
2 answers:
aleksandr82 [10.1K]3 years ago
8 0
Answer:

The wavelength decreases as the frequency increases.

Explanation:

The wavelength λ is the distance between successive peaks in a wave.

The frequency f of a wave is the number of complete waves that pass a point in a given time.

Triss [41]3 years ago
7 0

Answer: The frequency of a wave will increase.

Explanation:

The relation between the energy and the frequency is as follows;

E=h\nu

Here, h is the planck's constant and \nu is the frequency of the wave.

The energy of the wave is directly proportional to the frequency of the wave. The frequency is inversely proportional to the wavelength. If the energy of the wave increases then the wavelength of the wave decreases.

If the energy of the wave increases then the frequency of the wave will increase.

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Suppose a treadmill has an average acceleration of 4.7x10^-3 m/s. a)how much does its speed change after 5min? b)if the treadmil
Mars2501 [29]

Answer:

a)Change in the speed  = 1.41 m/s

b)The final speed will be 3.11 m/s

Explanation:

Given that

Acceleration ,a= 4.7 x 10⁻³ m/s²

a)

We know that

v= u + a t

v=final speed ,u=initial speed

t= time ,a= acceleration

Change in the speed

v- u = a t

t= 5 min  = 5 x 60 s = 300 s

v- u = 4.7 x 10⁻³ x 5 x 60 m/s

v-u = 1.41 m/s

Change in the speed  = 1.41 m/s

b)

Given that

u= 1.7 m/s

v-u = 1.41 m/s

v= 1.7 + 1.41 m/s

v=3.11 m/s

The final speed will be 3.11 m/s

8 0
4 years ago
What are the units for specific charge?<br> A. C/kg<br> B. C*kg<br> C. kg/C<br> D. 1/C*kg
Stolb23 [73]

Answer:

Option A

Explanation:

Your answer is the first option or "C/kg." C/kg is a ratio for specific charge. C for the charge of the electron, kg for the mass of the electron. To find the specific charge we divide the two, which usually involves scientific notations and simplifying.

<u>Example:</u>
\frac{C}{kg}
\frac{3.4\times10^3C}{2.7\times10^5kg}

Hope this helps.

6 0
2 years ago
What is the kinetic energy in joules of a 870-kg automobile traveling at 95 km/h?
Ray Of Light [21]

Answer:

The kinetic energy is 303178 Joule

Explanation:

We must change the speed units to m / s =

1km ---- 1000meters

1h ----- 3600 seconds

v = (95km 1000m / km) / (1h x 3600s / h) = 26, 4 m / s

We use the Kinetic Energy formula: Ec = 1/2 m x v ^ 2

Ec = 1/2 x 870 kg x (26, 4) ^ 2 = 303177, 6 Joule

5 0
3 years ago
Water in an ice cube tray is put into the freezer section of a refrigerator. As it freezes, this water — A loses all entropy B i
Svetradugi [14.3K]

Answer:

<h2>Due to extraction of heat from the water the entropy of the water will decrease</h2><h2>so correct answer is</h2><h2>C decreases in entropy</h2>

Explanation:

As we know that the entropy is defined as

\Delta S = \int{\frac{dQ}{T}}

So here we know that initially in ice tray we put water at room temperature into this

After placing this into the refrigerator the heat is extracted out of the water due to which the entropy of water will decrease

So correct answer here will be

C decreases in entropy

5 0
3 years ago
How long will it take a car to travel one lap around a 5 km long circuit if it is travelling at an average speed of 180 km/h ?
rewona [7]

Time = distance/speed

         = 5/180

Time = 0.03 hrs

6 0
3 years ago
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