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
max2010maxim [7]
3 years ago
15

Element with atomic number 31

Physics
1 answer:
frutty [35]3 years ago
6 0
Gallium is a chemical element with symbol Ga and atomic number 31. Elemental gallium does not occur in free form in nature, but as the gallium(III) compounds that are in trace amounts in zinc ores and in bauxite.
You might be interested in
Newtons law of garvitation is known as universal law. Why​
xeze [42]

Answer:

It is called so because it is applicable on all bodies having mass, and the bodies will be governed by the same law, that is newton's law of gravitation. Thus, as it is applicable universally, it is called as universal law.

5 0
3 years ago
In the diagram, the trough of the wave is shown by:
Kisachek [45]

Answer:

the correct representation of the trough is b

3 0
3 years ago
A substance changes from a solid to a liquid at its _____.
MrRa [10]
I would say D) melting point.
7 0
3 years ago
Read 2 more answers
HELP PLEASEE
lozanna [386]

Answer:

Usually an eletric shock. You can be left with numbness and MAYBE problems with your eyes.

Explanation:

4 0
2 years ago
Two radio antennas are 120 m apart on a north-south line, and they radiate in phase at a frequency of 3.4 MHz. All radio measure
chubhunter [2.5K]

Answer:

the smallest angle from the antennas is <em>47.3°</em>

Explanation:

We first need to write the expression for the relation between the wavelength (λ) and the frequency (f) of the wave, and then solve for the wavelength.

Therefore, the relation is:

λ = c /f

where

  • c is the speed of light constant
  • λ is the wavelength
  • f is the frequency

Thus,

λ = (3 × 10⁸ m/s) / (3.4 MHz)

  = (3 × 10⁸ m/s) / (3.4 MHz)(10⁶ Hz/1 MHz)

  = 88.235 m

Therefore, the smallest angle measured (from the north of east) from the antennas for the constructive interference of the two-radio wave can be calculated as

θ = sin⁻¹(λ / d)

where

  • d is the distance between the two radio antennas

Thus,

θ = sin⁻¹(88.235 / 120)

<em>θ = 47.3 °</em>

<em></em>

Therefore, the smallest angle from the antennas, measured north of east, at which constructive interference of two radio waves occurs is <em>47.3 °</em>.

5 0
3 years ago
Other questions:
  • What is the height of the cliff?
    8·1 answer
  • Why would a landslide be more likely on a steep mountain than on a gently sloping hill?
    11·2 answers
  • A horse ran at a constant speed for 4 hours. Then, it decreased its speed by 7 mph for the
    5·1 answer
  • A tow truck exerts a force of 3000 n on a car, accelerating it at 2 meters per second per second. what is the mass of the car?
    13·1 answer
  • Which are properties of liquid crystals
    8·1 answer
  • How much energy is required to raise the temperature of 50.0 grams of water 10.0 degree C? (Explain yourself answer in joules!)
    9·1 answer
  • 2. A 2.5 meter-long wave travels at 1 m/s towards a fixed boundary. After 2 seconds, how does the wave appear?
    10·1 answer
  • The spectra of most stars are dark-line spectra because ________.
    11·1 answer
  • Which particle would have the slowest rate of deposition? A.round particle B.very large particle C.particle with sharp ends D.pa
    14·2 answers
  • Modern rechargeable batteries require rare earth elements to build. Why are modern rechargeable batteries expensive and a concer
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!