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
prohojiy [21]
3 years ago
15

Why does helium have more spectral lines than hydrogen?

Physics
1 answer:
Lynna [10]3 years ago
8 0

<span>This is because Helium has two valence electrons compared to Hydrogen which has only one. Helium has more energy levels for an electron to jump thus more spectral lines to occur. The spectral lines relating to each change of energy level would be more grouped together and hence the greater chance of them falling in the visible range.</span>

You might be interested in
An object is in free fall. After 10 seconds calculate the distance fallen? *
Citrus2011 [14]

Answer:

9.81 × 10 = 98.1 meters

vertical displacement is s=1/2 at^2 + vt

initial vertical velocity is 0 so s=1/2 at^2

a in this instance is gravitational acceleration so 60m= 1/2 (9.81)t^2

solve for t, t = 3.497s. //I corrected this answer as just now I misread horizontal as vertical.

3 0
3 years ago
Read 2 more answers
A member of the marching band tunes their trombone inside their school. When they walk out to the field the instrument goes out
Alona [7]

The best explanation is the <em>difference</em> between the inside <em>temperature</em> and the outside temperature.

If the player doesn't change his emboucher (muscles and position of his lips), then the pitch produced by the instrument depends only on the physical dimensions of its plumbing, and the speed of sound in the tube.

BOTH of those things change slightly when the temperature changes.

4 0
3 years ago
Read 2 more answers
A train is traveling north. it goes 200 km /hr for 2.5 hours how far did the train go.
PSYCHO15rus [73]
<h3>Answer: 500 Kilometers</h3>

Explanation:

The formula for finding distance is: speed × time

We must multiply:

200Km/h × 2.5 hours

This gives you 500 Km.

<u>Remember: the formula to work out the distance -  speed x time.</u>

If the train speed is 200 km/h, it travels 200 km/h.

Now, we must multiply 200 by 2.5:

200 x 2.5 = 500

Our answer is 500 Kilometers.

7 0
2 years ago
Read 2 more answers
Click on the reset button, and stack one 50kg. crate on top of the other, so that the total mass is 100kg. The Friction should b
Helen [10]

Answer:

490.5 N

Explanation:

Coefficient of friction is 0.5 since friction force is set to halfway between none and lots. Minimum force is given by multiplying the weight and coefficient of friction

F= kN where k is coefficient of friction while N is weight. Also, N=mg where m is mass and g is acceleration due to gravity.

F=kmg=0.5*100*9.81=490.5 N

6 0
3 years ago
Summarize the Venn diagram.
Elena L [17]

Answer:

If this is a multiple choice question, then the answer is D.

Explanation:

Compounds are composed of atoms, which are composed of subatomic particles and consist of matter. Since they are composed of atoms rather than vice-versa, compounds cannot be found inside atoms and are not the most basic form of matter (ruling out A and C). A pure substance contains atoms, which are each composed of subatomic particles. Therefore, a pure substance must have atoms if it contains subatomic particles (ruling out B). The only answer left is D.

5 0
3 years ago
Other questions:
  • Calculate the mass defect of the helium nucleus 32he. the mass of neutral 32he is given by mhe=3.016029amu. express your answer
    14·1 answer
  • What is the first step in glycolysis
    8·1 answer
  • What do we call the average motion of moving atoms and molecules in the atmosphere?
    15·1 answer
  • The wavelength of an electron whose velocity is 1.7 Ã 104 m/s and whose mass is 9.1 Ã 10-28 g is ________ m. the wavelength of a
    13·1 answer
  • 6. A snowball that will be used to build a snowman is at the top of the only hill in town and weighs 22
    8·1 answer
  • An outside thermometer reads 57 F. What is this temperature in C ? Round you’re answer to the nearest whole number
    11·2 answers
  • What 3 factors should be considered when designing a lighting rod?
    10·1 answer
  • A net force of 10 N accelerates a mass of 5 kg with an acceleration of 2
    13·1 answer
  • What compound is a product of photosynthesis?
    7·2 answers
  • One reason the landscapes on the moon do not change as fast as earth's landscapes is because:_____.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!