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2 years ago

According to the Doppler effect what appears to happen when a light source moves further away from an observer

Physics

2 answers:

schepotkina [342]2 years ago

8 0

Answer: Hello there!

When the source of light moves further away from the observer (or the observer moves further away from the light source), there is something called "redshift"

The observer sees the wavelength wider, which means that the frequency decreases. This phenomenon causes a shift in the color of the wave, which now looks more red.

ludmilkaskok [199]2 years ago

6 0

Answer: The correct answer is B. "the electromagnetic waves appear more red in color".

Explanation:

Scientists use the Doppler effect to understand the universe by determining the motion of the object.

Red shift: The apparent frequency of light decreases as the source object in space moves away from us. The light is shifted to red end. The apparent frequency decreases and there is increase in the wavelength of the light.

Blue shift: The apparent frequency of light increases as the object in space moves towards us. The light is shifted to blue end. In this case, there is decrease in the wavelength of the light. The frequency of the wave increases.

In the given problem, when the light source moves further away from an observer, the electromagnetic waves appear red in color.

Therefore, the correct option is (B).

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Please help with this assignment paper in science.

Fiesta28 [93]

Explanation:

(a) The net force in the y direction is the sum of the individual forces. Taking up to be +y:

∑F = Lift − Weight

∑F = 100,000 N − 75,000 N

∑F = 25,000 N

(b) Since the net force is not 0, the forces are unbalanced.

(d) The net force in the x direction is the sum of the individual forces. Taking forward to be +x:

∑F = Thrust − Drag

∑F = 200,000 N − 23,000 N

∑F = 177,000 N

(e) Since the net force is not 0, the forces are unbalanced.

(f) Since the thrust is greater than the drag, the plane will accelerate.

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3 years ago

Two objects have the same momentum. Which of the following is true? I. The masses of the objects are equal. Ii. The speeds of th

Vaselesa [24]

Answer:

Iv. The direction of motion of each object is the same.

Explanation:

Momentum of an object is defined as:

$p= mv$

where

m is the mass of the object

v is its velocity

Since v is a vector, it follows that p is also a vector, and it has the same direction of the velocity. This means that if two objects have same momentum, then the direction of their momentum vector is also the same: therefore, the direction of motion of each object must be the same.

The other options are wrong, because they just state that only one of the two quantities involved in the equation (mass or velocity) is the same, but the two objects can actually have the same momentum even if they have different masses and velocities (in fact, the only thing that matters is that the product between mass and velocity is the same).

3 0

3 years ago

A variable is defined as anything that

LenKa [72]

Answer : Quantity or quality that varies like manipulating a variable to see what will happen to another variable

3 0

3 years ago

What is the force when two charged spheres distance is in half

slamgirl [31]

Answer:

When two spheres, each with charge Q, are positioned a distance Rapart, they are attracted to ... doubled, the electric-force between the two spheres

4 0

3 years ago

Identify the procedure to determine a formula for self-inductance, or inductance for short. Using the formula derived in the tex

OlgaM077 [116]

Answer:

L = 0.109 H

Explanation:

Given that,

Number of loops in the solenoid, N = 1500

Radius of the wire, r = 4 cm = 0.04 m

Length of the rod, l = 13 cm = 0.13 m

To find,

Self inductance in the solenoid

Solution,

The expression for the self inductance of the solenoid is given by :

$L=\dfrac{\mu_o N^2 A}{l}$

$L=\dfrac{4\pi \times 10^{-7}\times (1500)^2\times \pi (0.04)^2}{0.13}$

L = 0.109 H

So, the self inductance of the solenoid is 0.109 henries.

3 0

3 years ago