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
user100 [1]
3 years ago
6

Look at the spectrums of a star moving towards Earth and a motionless star.

Chemistry
2 answers:
Kay [80]3 years ago
8 0

The answer is; The spectrum of a star shifts towards the blue region when the star moves towards Earth.

This is referred to as the Doppler shift effect. As the star moves closer to the observer, the wavelength of light it produces is ‘compressed’ hence changing its relative frequency (just like the pitch of the siren of an ambulance approaching you).


AfilCa [17]3 years ago
6 0

it is Blue shifted when moving towards Earth

You might be interested in
Send Message
Ganezh [65]

Answer:

1 Atm

Explanation:

Dalton's law

The total pressure is 3 Atm so all you have to do is subtract the other partial pressures from 3

4 0
3 years ago
Read 2 more answers
Can someone please please help
Llana [10]

Answer:

oxidizer

Explanation:

an example of an oxidizers are oxygen and hydrogen peroxide

7 0
3 years ago
Which of the following has mechanical energy? (5 points)
Lisa [10]
B compressed spring I’m pretty sure
4 0
3 years ago
Read 2 more answers
If the hydrogen ion concentration, [H+], in a solution is 4.59 x 10-6 M, what is [OH-]?
atroni [7]

Answer:

2.18x10^-9 M

Explanation:

From the question given,

Hydrogen ion concentration, [H+] = 4.59x10^-6 M

Hydroxide ion, [OH-] =?

The hydroxide ion concentration, [OH-] in the solution can be obtained as follow:

[H+] x [OH-] = 1x10^-14

4.59x10^-6 x [OH-] = 1x10^-14

Divide both side by 4.59x10^-6

[OH-] = 1x10^-14 / 4.59x10^-6

[OH-] = 2.18x10^-9 M

6 0
3 years ago
Consider these two cases. Case 1: An electron jumps from energy level 5 to energy level 2 in an atom. Case 2: An electron jumps
xenn [34]

Answer:

1.  A photon is emitted by the atom.

2. More energy is emitted or absorbed for case 2

Explanation:

The Bohr's model of the atom was based on quantum mechanics idea. He suggested that electrons move in specific spherical orbits round the nucleus.

The claims of his model emphasized on the premise that electrons only move in permissible orbits or energy levels round the nucleus.

The ground state is the lowest energy state available where n= 1.

The excited state is energy levels of n = 2,3,4 .....

Problem 1

For an electron to return to the ground state from a higher energy level, i.e from  5 to 2 in case 1, energy is emitted in form of photons.

Problem 2

More energy is emitted or absorbed when an electron moves from a higher energy level to a more lower one or jumps from a lower energy level to a more higher one.

8 0
3 years ago
Other questions:
  • What is the role of roughages in the balanced diet​
    12·1 answer
  • When you count up the electrons in a Lewis Structure, do double and triple bonds count as 4 or 6 electrons?
    10·1 answer
  • 6.The combustion reaction of the amino acid glycine (NH2CH2COOH, solid) has a standard enthalpy of –969 kJ/mol at 298K, and a st
    15·1 answer
  • A solution is prepared by dissolving 0.23 mol of benzoic acid and 0.27 mol of sodium benzoate in water sufficient to yield 1.00
    11·1 answer
  • Under what circumstances will a scientific theory be changed or discarded
    14·2 answers
  • Please help!!!!! I need it!!!
    11·1 answer
  • 1. Find your
    14·1 answer
  • state the conditions under which copper reacts with sulphuric (vi) acid and give an equation for the reaction​
    6·1 answer
  • What is a nonpolar bond? ​
    8·1 answer
  • Give the systematic names for the formulas or give the formulas for the names:
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!