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Marta_Voda [28]
2 years ago
10

What is Doppler effect​

Physics
1 answer:
arsen [322]2 years ago
5 0

Doppler effect is the shift in frequency as the object gets near an object/person or far away from an object or person.

  • When the frequency of a police car is heard from far away, the frequency is low and long wave lengths
  • When the frequency of a police car is heard from near, the frequency is high and short-wave lengths

Hope it helps!

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Can anyone help fill out the table?
navik [9.2K]
Answer:


What table I don’t see any table
6 0
4 years ago
What is the colour of third band of a coded resistor having resistance equal equal to 2.3*10`2
Helen [10]

Color of third band of a coded resistor is Brown.

What is Resistance:

  • Resistance is a measure of the opposition to current flow in an electrical circuit.
  • Resistance is measured in ohms, omega (Ω)

The color code specify the resistance value, the tolerance, and sometimes the reliability or failure rate.

How to identify resistor's color codes:

  1. Look at the resistor so the group of 3 or 4 color bands are on the left side
  2. Read the color bands from left to right.
  3. Read the color on the last color band, which is farthest right.
  4. compare the colors to the resistance code table

Here,

the value of resistance is 2.3x10^2 Ω

R = 23x10^1 Ω

here power of 10 is 1

so, the color of third band of a color coded resistor will be related to number 1

Hence,

color of third band of a coded resistor is Brown.

Learn more about resistor's color codes here:

<u>brainly.com/question/24359143</u>

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#SPJ4

4 0
2 years ago
Is brainly even trying anymore?
STALIN [3.7K]
Yes because it helps with my work
7 0
3 years ago
A long, cylindrical solenoid with 100 turns per centimeter has a radius of 14.7 cm. If the current through the solenoid changes
oee [108]

Answer:

Explanation:

Given:

dI/dt = 6.21 A/s

n = N/l

= 100 turns/cm

= 100 turns/cm × 100 cm/1 m

Radius, r = 14.7 cm

= 0.147 m

Inductance, L = uo × n^2 × A × l

L/l = 4pi × 10^-7 × (100 × 100)^2 × pi × 0.147^2

= 8.53 H

Emf, E = L × dI/dt

E/l = L/l × dI/dt

= 8.53 × 6.21

= 52.98 V/m

=

4 0
3 years ago
A force of 40 N is applied in a direction perpendicular to the end of a 9 m long bar that pivots about its other end. Find the t
snow_lady [41]

Answer:

360 Nm

Explanation:

Torque: This is the force that tend to cause a body to rotate or twist. The S.I unit of torque is Newton- meter (Nm).

From the question,

The expression of torque is given as

τ = F×d......................... Equation 1

Where, τ = Torque, F = force, d = distance of the bar perpendicular to the force.

Given: F = 40 N, d = 9 m

Substitute into equation 1

τ  = 40(9)

τ  = 360 Nm.

5 0
3 years ago
Read 2 more answers
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