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
maxonik [38]
3 years ago
9

which of the following small bodies are the hardest to tell apart because they are made of similar materials ? A . dwarf planets

and comets. . b. asteroids and comets . . c. comets and metoroids . . d. asteroids and meteroids
Physics
2 answers:
grandymaker [24]3 years ago
8 0
Option D is right that is asteroids and meteroids.
Svetllana [295]3 years ago
6 0

Answer: d. asteroids and meteoroids

Explanation:

A comet is made of rocks and frozen gases and is found in the outskirts of the solar system. A dwarf planet is large in size and round in shape as compared to an asteroid and has rocky composition.

Asteroids and meteoroids are rocky in composition and have irregular shape and size. Majority of the asteroids are found in between the orbits of Mars and Jupiter. These are thought to form from an unformed planet. Meteoroids are debris of planets and comets. Thus, it is difficult to distinguish between the two because of the similar materials.

You might be interested in
Examples of the period, frequency, speed of a wave in a sentence?
Kamila [148]
Hi There! :)

<span>Examples of the period, frequency, speed of a wave in a sentence?

                                Examples

•</span><span>He indicated the space behind him with a </span>wave<span> of a hand.
</span><span>
•</span><span>On land only the grass and trees </span>wave, but the water itself is rippled by the wind.

•<span>But wherever it may turn there always will be the </span>wave<span> anticipating its movement.</span>

•<span>Harbor was completely submerged by the great </span>wave, which still came<span>
</span>

6 0
3 years ago
The bonds of oxygen molecules are broken by sunlight. The minimum energy required to break the oxygen-oxygen bond is 495 kJ/mol.
makvit [3.9K]

Answer:

The wavelength of sunlight that can cause this bond breakage is 242 nm

Explanation:

The minimum energy of the sunlight that'll break Oxygen-oxygen bond must match 495 KJ/mol

But 1 mole of any molecule contains 6.02 × 10²³ molecules/mol

Each molecule of Oxygen will require (495 × 10³)/(6.02 × 10²³) = 8.22 × 10⁻¹⁹ J

E = hf

v = fλ

f = v/λ

f = frequency of the sunlight

λ = wavelength of the sunlight

v = speed of light = 3.0 × 10⁸ m/s

E = hv/λ

λ = hv/E

h = Planck's constant = 6.63 × 10⁻³⁴ J.s

λ = (6.63 × 10⁻³⁴)(3 × 10⁸)/(8.22 × 10⁻¹⁹)

λ = 2.42 × 10⁻⁷ m = 242 nm.

5 0
3 years ago
A rough surface for infrared waves may be polished for
zloy xaker [14]

Answer:

Radio Waves

Explanation:

7 0
2 years ago
A projectile is launched at an angle above the
gtnhenbr [62]
The first rule of vectors is that the horizontal and vertical components are separate. Disregarding air resistance, the only thing we have to worry about is gravity.

The appropriate suvat to use for the vertical component is v = u +at
I will take a to be -9.81, you may have to change it to be 10 if your qualification likes g to be 10.

v = 30 + (-9.81x2)
v = 30 - 19.62
=10.38m/s

Therefore we know that after 2.0 s the vertical component will be 10.38ms^-1, ie 10m/s as the answers given are all to 2sf.

The horizontal component is completely separate to the vertical component and since there is no air resistance, it will remain constant throughout the projectiles trajectory. Therefore it will remain at 40ms^-1.

Combining this together we get:
(1) vx=40m/s and vy=10m/s

7 0
2 years ago
Which statement is correct?
Svetach [21]
Out of the choices given, the statement about how light travels is "<span>Light can travel in a vacuum, and it travels faster if the light source is moving."</span>
7 0
3 years ago
Other questions:
  • What are the effects of overpopulation on a specific species in an ecosystem?
    6·2 answers
  • Which of these geologic events is most closely associated with a transform plate boundary?
    9·1 answer
  • Which are characteristics of refraction? Check all that apply.
    9·2 answers
  • A population of birds walks along the shores of a swampy area eating small crabs. Climatic changes cause the water level in the
    11·1 answer
  • A 1000 kg weather rocket is launched straight up. the rocket motor provides a constant acceleration for 16 s, then the motor sto
    9·1 answer
  • A 0.750-kg object hanging from a vertical spring is observed to oscillate with a period of 1.50 s. When the 0.750-kg object is r
    11·1 answer
  • What change of state occurs during vaporization?
    9·1 answer
  • Ethan pushes a wooden box across a carpeted floor. Then he pushes the same box across a smooth marble floor. Why does Ethan find
    8·2 answers
  • A balloon of hydrogen is put into to pressure chamber. The initial pressure and volume of hydrogen is 1 atm and .5 cm3. The pres
    14·1 answer
  • Can anyone help me with this question please <br> I’ll mark as brainliest <br> No links.
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!