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
muminat
4 years ago
11

What is an alpha particle composed of?

Physics
1 answer:
kumpel [21]4 years ago
8 0

Answer:

A. Two protons and two neutrons.

Explanation:

Alpha particles are positively charged specie identical to the nucleus of Helium atom.

You might be interested in
There is little sunlight at high latitudes during the winter, so few crops can grow even if temperatures are regulated. To addre
Kruka [31]

Answer;

the colors of light that plants require for photosynthesis

Explanation;

The color of light used for photosynthesis depends on the pigment in the plant. For example, green plants with chlorophylls and carotenoids have a maximum activity with violet-blue and red light.

White light contains various colors, including red, orange, yellow, green, blue, indigo and violet. When plants harvest light for photosynthesis, they only absorb a few colors and reflect the rest. Plants appear green because chlorophyll absorbs other colors and reflects green.

7 0
3 years ago
Read 2 more answers
A grating has 460 rulings/mm. What is the longest wavelength for which there is a 6.0th-order diffraction line
mestny [16]

Answer:

λ = 3.62 x 10⁻⁷ m = 362 nm

Explanation:

The grating equation gives the relationship between the wavelength, the diffraction line order and the diffraction angle. The grating equation is written as follows:

mλ = d Sinθ

where,

m = order of diffraction = 6

λ = longest wavelength = ?

d = 1/(460 rulings/mm)(1000 mm /1 m) = 2.17 x 10⁻⁶ m/ruling

θ = Diffraction angle = 90° (for longest wavelength)

(6)λ = (2.17 x 10⁻⁶ m/ruling) Sin 90°

λ = (2.17 x 10⁻⁶ m/rulings)/6

<u>λ = 3.62 x 10⁻⁷ m = 362 nm</u>

3 0
4 years ago
I need help solving this
Alja [10]

Answer: let me think

Explanation:

3 0
3 years ago
The north end of a compass points towards ​
3241004551 [841]

Opposite attract , this is the magnetic south pole

option (b) ✔

8 0
2 years ago
Read 2 more answers
Why does a batsman striking a cricket ball follow through?​
Over [174]

A good follow-through maintains flow in the motion. It is to hit 'smooth', rather than to hit 'hard'. It is to maintain a certain 'looseness' in the swing, rather than 'tension' or 'over-hitting' the ball with too much power.

5 0
3 years ago
Other questions:
  • Three polarizing filters are stacked, with the polarizing axis ofthe second and third filters at angles of 22.2^\circ and 68.0^\
    14·1 answer
  • A 2.0-kg ball rolling along a flat surface starts up a hill . If the ball reaches a height of 0.63 m, what was it’s initial spee
    5·1 answer
  • In a mountain stream, the _____ the water, the _____ oxygen can be dissolved.
    7·2 answers
  • A car traveling at a rate of 30 ft/sec is approaching an intersection. When the car is 120 ft from the intersection, a truck tra
    10·1 answer
  • Question 3
    13·1 answer
  • Consider a 2-kg bowling ball sits on top of a building that is 40 meters tall. It falls to the ground. Think about the amounts o
    9·1 answer
  • Which important safety measures should be taken during a hurricane? Select two options.
    13·2 answers
  • An inactive teen should eat approximately
    14·1 answer
  • What is missing from the solubility graph shown on the right?
    10·2 answers
  • How should measurements of car 2 be taken to accurately measure the distance it travels? Be sure to include where the meter stic
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!