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
BARSIC [14]
3 years ago
14

Why are all galaxies moving away from us?

Physics
1 answer:
ipn [44]3 years ago
7 0
Galaxy million of star and planet. gravitional wave field all the universe some planet explosive itself moving other places . Black holes Mass gravity field
You might be interested in
Damage to internal organs will present as pain associated with a particular surface area of the body. Why would something like i
GenaCL600 [577]
A dish shaped large muscle which moves up and down when there is contraction and expansion of lungs is the diaphragm which is present between the chest cavity and lower abdominal region. The action of the diaphragm is affected by an inflammation occurring below the muscular disc which will affect the process of breathing. The forceful breathing may result in strain and stress in the back muscles of the human body. This in turn causes pain in the shoulder.
4 0
2 years ago
Cars A and B are racing each other along the same straight road in the following manner:
zysi [14]

Answer:

\frac{x_{o}}{v_B-V_A} =t

Explanation:

Represent the car's position as a function

x_o= "head start"

x_{A}(t) = x_{o} + v_{A}t\\x_B(t)=v_Bt \\

Remember: v_B>v_A

"cathching up means" that x_A(t)=x_B(t)

x_{o} + v_{A}t =v_Bt\\x_{o} = v_Bt -v_{A}t\\x_{o} = t(v_B-V_A)\\\frac{x_{o}}{v_B-V_A} =t, where \ v_B>v_A

8 0
3 years ago
A student standing on the ground throws a ball straight up. The ball leaves the student's hand with a speed of 19.0 m/s when the
german

Answer: 4 s

Explanation:

Given

The ball leaves the hand of student with a speed of u=19\ m/s

When the hand is h=2.5\ m above the ground

Using the equation of motion we can write

h=ut+\dfrac{1}{2}at^2

Substitute the values

\Rightarrow 2.5=-19t+0.5\times 9.8t^2\\\Rightarrow 4.9t^2-19t-2.5=0\\\\\Rightarrow t=\dfrac{19\pm \sqrt{(-19)^2-4\times 4.9\times (-2.5)}}{2\times 19}\\\Rightarrow t=4.0049\quad [\text{Neglecting the negative value of }t]

Thus, the ball will take 4 s to hit the ground.

5 0
3 years ago
If an atom is neutral, then the number of electrons is equal to the number of
Aloiza [94]

Answer:

Neutral atom means the number of protons is equal to the number of electrons.

Explanation:

4 0
3 years ago
2CO + 2NO → 2CO2 + N2 is it balannced
natita [175]

If the same atoms appear on both sides, then it's balanced.

In this reaction, there are 4 Oxygens, 2 Carbons, and 2 Nitrogens on each side.  So numerically, <em>it's balanced</em>.  But I don't know enough chemistry to say whether the reaction is possible.

4 0
3 years ago
Read 2 more answers
Other questions:
  • A bags shed and he balls stand slap DC dmss
    5·1 answer
  • A train that travel 100 kilometer in 4hours is traveling at what speed?
    5·1 answer
  • Which will settle out if allowed to sit on a table? suspension colloid solution compound a suspension a colloid a solution a com
    7·2 answers
  • A driver, traveling at 22.0 m/s, slows down her 2.00 x 103 kg car to stop for a red light. What work is done by the friction for
    8·1 answer
  • Which planet has a rocky mantle, iron core and very dense atmosphere that is 96.5% poisonous carbon dioxide and 3.5% nitrogen?
    11·2 answers
  • What is net displacement vector? I just started AP Physics 1.
    9·2 answers
  • Help plz, answer all
    13·2 answers
  • 1. A 12 kg dog is running 5 m/s. How much kinetic energy does the dog have?
    10·1 answer
  • A skydiver has a mass of 50.5 kg what is the force of weight on the sky diver? <br> F= _N
    12·1 answer
  • The type of brightness in which all
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!