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
zepelin [54]
2 years ago
7

Please answer the following question.

Physics
1 answer:
Elina [12.6K]2 years ago
7 0

Doppler Shift lets you see a star A. Move back and forth

<h3>What is Doppler Shift?</h3>

This refers to the frequency change of a wave in relation to an observer as it moves back and forth.

Hence, we can see that the thing which astronomers can learn from the Radial Velocity Method is D. Period of orbit and minimum mass of a planet as it measures the wavelengths of absorption lines in its spectrum.

Read more about doppler shift here:

brainly.com/question/4052291

#SPJ1

You might be interested in
Give two example for push or pull to change the state of motion of time two examples​
dolphi86 [110]

Explanation:

An Example of push as a force would be to push on a swing. The force moves the swing in a particular direction and the harder that you push the further the swing will go.

An example of pull as a force would be opening a door. ...

An example of pressure as a force is when you push down on a pile of grapes. is this what you mean

4 0
3 years ago
Please help I’ll give brainliest
In-s [12.5K]

Answer:

2nd option

Explanation:

Static electricity the charges are at rest and they are accumulating on the surface of the insulator.

Current electricity the electrons are moving inside the conductor.

4 0
3 years ago
A flywheel with a very low friction bearing takes 1.6 h to stopafter the motor power
Nina [5.8K]

Answer:

(I). The initial rotation rate is 4.29 rad/s.

(II). The revolutions is 3932.

Explanation:

Given that,

Time = 1.6 h

Angular velocity = 41 rpm

(I). We need to calculate the initial rotation rate in rad/s

\omega=41\ rev/m

\omega=\dfrac{41\times 2\pi}{60}\ rad/s

\omega=4.29\ rad/s

(II). We need to calculate the revolutions

Using formula of revolutions

\theta=\omega t

\theta=4.29\times1.6\times3600

\theta=24710\ rad

\theta=\dfrac{24710}{2\pi}

\theta=3932\ revolution

Hence, (I). The initial rotation rate is 4.293 rad/s.

(II). The revolutions is 3932.

7 0
4 years ago
If the faster stone takes 12.0 s to return to the ground, how long will it take the slower stone to return?
iren [92.7K]
Same speed, because mass is neglected. The things that affect the speed are the distance and speed of the rock.
5 0
4 years ago
A 5000-lb wrecking ball hangs from a 30-ft cable of density 7 lb/ft attached to a crane. Calculate the work done if the crane li
ladessa [460]

Answer:

W = 1094100 [lb*ft]

Explanation:

We recall the definition of work which says that work is equal to the product of force by distance. We have the weight data of the ball and cable.

30[ft] * 7[lb/ft] = 210 [lb]

the force combined will be:

F = 210 + 5000 = 5210[lb]

W = 5210 * 30 = 1094100 [lb*ft]

4 0
3 years ago
Other questions:
  • How do geologist determine the age of a fault line? What types of evidence is specifically used?
    15·1 answer
  • Aaron created the chart to list the benefits and limitations of using synthetic polymers . In which row has Aaron made an error
    14·2 answers
  • Blocks A (mass 3.00 kg ) and B (mass 9.00 kg ) move on a frictionless, horizontal surface. Initially, block B is at rest and blo
    14·1 answer
  • PLS HELP. I WILL MARK U THE BRAINLIEST IF U ANSWER EVERYTHING STEP BY STEP AND CORRECTLY.
    14·2 answers
  • Which tuning fork would sound lower,one with frequency 512 Hz or 128 Hz?
    14·1 answer
  • A roller coaster at the Six Flags Great America amusement park in Gurnee, Illinois, incorporates some clever design technology a
    11·1 answer
  • Which plant tissue makes up the thinnest layer?
    10·1 answer
  • Which gaseous giants did renaissance scientists such as galileo know about? select two options. jupiter mars neptune saturn uran
    10·1 answer
  • The unit of energy is a derived unit give reasons.<br>​
    10·1 answer
  • A water trough is m long and a cross-section has the shape of an isosceles trapezoid that is cm wide at the bottom, cm wide at t
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!