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
prisoha [69]
3 years ago
8

According to the concept of length contraction, what happens to the length of an object as it approaches the speed of ligh and t

hen slows down, eventually coming to a stop? O It is always observed as contracting It is always observed as the same length O It is observed as expanding and then contracting back to its original length O It is observed as contracting and then expanding back to its original length
Physics
2 answers:
alexgriva [62]3 years ago
6 0

Answer:

When an object moves its length contracts in the direction of motion. The faster it moves the shorter it gets in the direction of motion. The object in this question moves and then stops moving. So it's length first contracts and then expands to its original length when the motion stops. The speed doesn't have to be anywhere near the speed of light. When the object moves its length contracts no matter how fast or slow it's moving.

Explanation:

vladimir1956 [14]3 years ago
6 0

Answer:

When an object moves its length contracts in the direction of motion. The faster it moves the shorter it gets in the direction of motion. The object in this question moves and then stops moving. So it's length first contracts and then expands to its original length when the motion stops. The speed doesn't have to be anywhere near the speed of light. When the object moves its length contracts no matter how fast or slow it's moving.

You might be interested in
This is physics class, plzzz help ! 86.72 m to cm
Vaselesa [24]

Answer:

8672

Explanation:

multiply the length value by 100

5 0
3 years ago
Protons and neutrons grouped in a specific pattern
alexgriva [62]
Answer b protons and electrons
5 0
3 years ago
A person must pull a rope 20 meters with a force of 200 N what is the work input?
tatiyna
Work done = force * distance
work done = 200 * 20
work done = 4000J
4 0
3 years ago
An 80-cm-long steel string with a linear density of 1.0 g/m is under 200 N tension. It is plucked and vibrates at its fundamenta
icang [17]

Answer:

Wavelength of the sound wave that reaches your ear is 1.15 m

Explanation:

The speed of the wave in string is

v=\sqrt{\frac{T}{\mu} }

where T= 200 N is tension in the string , \mu=1.0 g/m is the linear mass density

v=\sqrt{\frac{200}{1\times 10^{-3} }

v=447.2 m/s

Wavelength of the wave in the string is

\lambda =2L=2\times 0.8=1.6 m

The frequency is

f=\frac{v}{\lambda} \\f=\frac{447.2}{1.6}\\f=298.25 Hz

The required wavelength pf the sound wave that reaches the ear is( take velocity of air v=344 m/s)

\lambda=\frac{v_{air}}{f} \\\lambda=\frac{344}{298.25} \\\lambda=1.15 m

8 0
3 years ago
Rex makes himself a bowl of cereal. He puts 28 g of cereal in a bowl and then adds 245 g of milk. Before eating the cereal, he r
Galina-37 [17]

Answer:

A.)

Explanation:

Because you didn't add anything or take anything away.

5 0
3 years ago
Other questions:
  • Take a look at the pic and please help me
    5·1 answer
  • What would happen if there were no action-reaction forces in effect and you tried walking down a sidewalk
    11·1 answer
  • We intend to observe two distant equal brightness stars whose angular separation is 50.0 × 10-7 rad. Assuming a mean wavelength
    12·2 answers
  • Brainliest!!! A student wanted to answer the question, “How does the amount of glycerin affect the size of a bubble blown with s
    13·2 answers
  • Two identical closely spaced circular disks form a parallel-plate capacitor. Transferring 2.1×109 electrons from one disk to the
    7·2 answers
  • A baseball pitcher throws at 95 mile/hr at a hitter 60 feet 6 inches away. How long does it take for the baseball to reach the h
    6·1 answer
  • An elemental trip through europe
    13·1 answer
  • A bicycle wheel rotates uniformly through 2.0 revolutions in 4.0 s. what is the frequency of the wheel's rotation?
    9·2 answers
  • Need some help !!!!!!!!!
    5·2 answers
  • A baseball sits motionless near first base on a baseball diamond. What statement best explains why the baseball remains motionle
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!