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Sedbober [7]
3 years ago
5

What is the electromagnetic spectrum and how is it used to gather information about

Physics
1 answer:
Sladkaya [172]3 years ago
3 0
Telescopes use lenses or mirrors to collect and focus waves from the electromagnetic spectrum, including visible light, allowing us to look at celestial objects. By studying the electromagnetic waves given off by objects such as stars, galaxies, and black holes, astronomers can better understand the universe.
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Using a light microscope, a student identified the following characteristics of four organisms found in a sample of pond water.
yuradex [85]

Answer:

Organisms 2 and 3

Explanation:

3 0
3 years ago
Two flat conductors are placed with their inner faces separated by 17 mm. If the surface charge density on one of the inner face
blagie [28]

Answer:

Explanation:

electric field between plates

=  surface charge density / ε₀

= 108 x 10⁻¹² / 8.85 x 10⁻¹² (ε₀ = 8.85 x 10⁻¹² )

= 12.20 V/ m

Electric potential diff

= electric field x distance between plates

=  12.20 x 17 x 10⁻³ V

= 0.207 Volt

4 0
4 years ago
What can happen to the motion of an object when there is a resultant force on it
MA_775_DIABLO [31]
Then, it would continue the motion in direction of resultant force...
3 0
3 years ago
What do we mean by the interstellar medium?
Sphinxa [80]
<h2>Answer:</h2>

The <u>interstellar medium</u> is the content of matter and energy that exists between stars within a galaxy.

In this sense, two components can be distinguished in the interstellar medium: dust particles and gas.

Dust represents 1% of the interstellar medium in mass, while the gas (consisting mainly of hydrogen and helium) represents 99% of the mass of the interstellar medium.

It should be noted that the interstellar matter is not uniformly distributed but is concentrated in molecular clouds.

3 0
3 years ago
Dump Tower is 96 stories tall. A small, 1.2-kg object is dropped over the side of the roof of the tower and accelerates toward t
laiz [17]

Answer:

6.0 s

98 m/s

Explanation:

The radius of the planet is much bigger than the height of the tower, so we will assume the acceleration is constant.  Neglect air resistance.

Acceleration due to gravity on this planet is:

a = GM / r²

a = (6.67×10⁻¹¹ m³/kg/s²) (2.7 × 1.48×10²³ kg) / (1.7 × 750,000 m)²

a = 16.4 m/s²

The height of the tower is:

Δy = 96 × 3.05 m

Δy = 293 m

Given v₀ = 0 m/s, find t and v.

Δy = v₀ t + ½ at²

(293 m) = (0 m/s) t + ½ (16.4 m/s²) t²

t = 6.0 s

v² = v₀² + 2aΔy

v² = (0 m/s)² + 2 (16.4 m/s²) (293 m)

v = 98 m/s

8 0
4 years ago
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