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
ZanzabumX [31]
3 years ago
11

The Milky Way has a diameter (proper length) of about 1.2×105 light-years. According to an astronaut, how many years would it ta

ke to cross the Milky Way if the speed of the spacecraft is 0.890 c?
Physics
1 answer:
Dmitriy789 [7]3 years ago
6 0

Answer:

t = 134834.31 years

Explanation:

First we find the speed of the ship:

v = 0.890 c

where,

v = speed of the ship = ?

c = speed of light = 3 x 10⁸ m/s

Therefore, using the values, we get:

v = (0.89)(3 x 10⁸ m/s)

v = 2.67 x 10⁸ m/s

Now, we find the distance in meters:

Distance = s = (1.2 x 10⁵ light years)(9.461 x 10¹⁵/1 light year)

s = 11.35 x 10²⁰ m

Now, for the time we use the following equation:

s = vt

t = s/v

t = (11.35 x 10²⁰ m)/(2.67 x 10⁸ m/s)

t = (4.25 x 10¹² s)(1 h/3600 s)(1 day/24 h)(1 year/365 days)

<u>t = 134834.31 years</u>

You might be interested in
An object is 50 cm from a converging lens with a focal length of 40 cm . A real image is formed on the other side of the lens, 2
Leno4ka [110]

Answer:

d) -4.0

Explanation:

The magnification of a lens is given by

M=-\frac{q}{p}

where

M is the magnification

q is the distance of the image from the lens

p is the distance of the object from the lens

In this problem, we have

p = 50 cm is the distance of the object from the lens

q = 250 cm - 50 cm is the distance of the image from the lens (because the image is 250 cm from the obejct

Also, q is positive since the image is real

So, the magnification is

M=-\frac{200 cm}{50 cm}=-4.0

7 0
3 years ago
For a freely falling object dropped from
vlada-n [284]

If you stay on or near the surface of Earth, then the acceleration due to gravity

is constant.  It's 9.807 meters per second squared. (rounded)

7 0
3 years ago
Which tuning fork test evaluates conductive and sensorineural hearing loss in both ears at the same time
Flura [38]

The Rinne and Weber tests are frequently used to detect conductive and sensorineural deafness.

Another test to assess conductive and sensorineural hearing impairments is the Weber test. When sound waves cannot flow from the middle ear to the inner ear, conductive hearing loss results.

This may be brought on by issues with the eardrum, middle ear, or ear canal, such as an infection. A helpful, quick, and easy screening test for determining hearing loss is the Weber test.

The test can identify unilateral sensorineural and conductive hearing loss. Conduction hearing is mediated by the middle and outer ear. A tuning fork is used in the Weber test, a hearing screening procedure. It can identify unilateral sensorineural hearing loss and unilateral conductive hearing loss in the middle ear.

Learn more about the Weber test here brainly.com/question/9064448

#SPJ4.

7 0
2 years ago
If 5 complete oscillations of a sound wave pass through a point in 0.5 s and the speed of sound was recorded to be 10 m/s, then
LekaFEV [45]

Answer:

λ = 2.5m

Explanation:

Given the following :

Speed of sound (v) = 10m/s

If 5 oscillations pass through a point in 0.5seconds;

Time taken (period) for 1 oscillation is :

Number of oscillations / total time taken

5 / 0.5 = 0.25 seconds

Wavelength, period and Velocity are related by the formula:

v = λ / T

λ = v * T

λ = 10 * 0.25

λ = 2.5 m

3 0
3 years ago
Which of the following is NOT an example of kinetic energy being converted to potential energy?
Pani-rosa [81]

There are no such examples on the list you've provided.

6 0
3 years ago
Other questions:
  • The Rite of Spring was composed by
    11·1 answer
  • Determine the approximate force (N) used to pull a sled up a 400 m hill using 1900 J of work.
    6·1 answer
  • Which is the correct symbol for an isotope of helium with 2 neutrons?
    11·1 answer
  • Two samples of water are mixed together.
    6·1 answer
  • Help please !! physics kinematic equations
    6·1 answer
  • Which layer of the atmosphere is the least dense?
    13·2 answers
  • HELP ME PLSSSS!!!!!!!
    5·2 answers
  • What does m/s/s mean?
    5·1 answer
  • Please Help lol. <br> just trying to get up the character count lol
    13·1 answer
  • Now assume that Alice and Bob are twins, and Alice left Earth and Bob stayed behind fixing his spaceship. If Alice spent some ti
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!