Which of the following explains
why mountain tops are a great
place for observatories?
A. They have less gravity.
B. There is less magnetic interference.
C. The weather is calmer.
D. There is less atmosphere above them.
Answers
Answer:
D, there is less atmosphere above them
Explanation:
When telescopes are at a high elivation, they get away from the distortion of starlight due to the atmosphere and because of the elevation, the telescopes are above most of the water vapor in the atmosphere, so infrared astronomy can be done.
Related Questions
Find the coordinates of a point on the directed segment from (3,-2) to (8,0) that divides it into a ratio of 3:1.
Answers
Answer:
[tex](x,y) = (\frac{27}{4}, -\frac{1}{2})[/tex]
Explanation:
Given
[tex](x_1,y_1) = (3,-2)[/tex]
[tex](x_2,y_2) = (8,0)[/tex]
[tex]m : n = 3 :1[/tex]
Required
The coordinates of the point
This is calculated using:
[tex](x,y) = \frac{1}{m+n}(mx_2 + nx_1, my_2 + ny_1)[/tex]
So, we have:
[tex](x,y) = \frac{1}{3+1}(3*8 + 1*3, 3*0 - 1*2)[/tex]
[tex](x,y) = \frac{1}{4}(27, -2)[/tex]
So, we have:
[tex](x,y) = (\frac{27}{4}, -\frac{1}{2})[/tex]
1.which are the fundamental particles whose masses are mainly responsible for the mass of an atom? give reasons ?
2.what is the mass of a Proton ?
3.what about the mass of a Neutron ?
4.what will be the mass of an atom having only one proton and one neutron ?
5.find the mass of an atom having two protons and two neutrons?
6.is there any relation between the total number of protons and neutrons in an atom and its mass ?
7.which is the fundamental particles of an atom that can be displaced when atoms rub against each other or they undergo chemical reaction with other atoms? give reasons ?
Answers
Answer:
1. nuetron and proton.
2. 1.6726219 × 10-27 kilograms
3.939565413.3 eV/c2, or 1.674927471×10−27 kg
4.1.67 × 10-24 grams
5. 4
6. yes
7. electron and its a chemical reaction.
Explanation: some might not be right but i hope some are.
During the earthquake several buildings and infrastructure were totally destroyed. Many people were killed and there was a Tsunami watch for the island. The earthquake measured __________on the scale?
Answers
Answer:
Richter scale
Explanation:
The earthquake is measured on Richter scale which measures the magnitude of an earthquake. The Richter scale measures the largest amplitude on the recording, but other magnitude scales measure different parts of the earthquake. The USGS currently used Moment Magnitude scale for measuring earthquake magnitudes. These scales are present in every location where tectonic plates meets or regions surrounded these plates.
Which of the following describes the work of an agronomist?
the study of field crops
the study of field ecosystems
the study of landscape design
the study of commercial uses of plants
Answers
The answer is the first option.
which sequence represents the relative ages of these rock formations, from oldest to youngest ?
Answers
Answer:
C. D - C - A - B
Answer: C. D C A B
Explanation: Just got it right hope this help enjoy :D
Which observatory detects X-rays
and gamma rays?
A. The Hubble Space Telescope
B. The Spitzer Space Telescope
C. The Compton Gamma Ray Observatory
D. The Chandra X-ray Observatory
Answers
Answer:
Chandra X-ray Observatory
Explanation:
Answer:
the chandra x-ray observatory
Explanation:
how are rock and minerals useful for the construcation of house
Answers
Answer:
Minerals are used to build houses. Think of all the metal used in nails and screws. Bricks are made from clay, and cement and plasterboard are also made of minerals. ... When wet, the clay can be shaped, and then fired to make floor, wall, and roof tiles, as well as house bricks.Polar easterlies blow in a curving path from the high-pressure areas of the polar highs to the subpolar lows. What keeps these winds from blowing in a straight line? O A. Doldrums O B. Mountain ranges O C. Earth revolving around the sun D. Earth spinning on its axis SUBMIT
Answers
Answer: C
Explanation:
Cuales son los cuatro tipos de relieve Europeo
Answers
Answer:
Speak English
Explanation:
How can I help if your talking gibberish
2
Discuss human activities that contribute to the increase in carbon dioxide in the atmosphere.
Answers
Answer: Riding cars and using a lot of electricity
Explanation:
what living things can be found in mangrove forest and tropical rainforest
Answers
Answer:
Fish, shrimp prawns, crabs, shellfish and snails.
Others can be tigers, sharks, turtles, and many more.
Which of the following is true of the population distribution of Russia?
a. Most of the people live in the East, and most of the land is in the East.
b. Most of the people live in the East, but most of the land is in the West.
Most of the people live in the West, but most of the land is in the East.
d. Most of the people live in the West, and most of the land is in the West.
C.
Answers
Answer:
A: Most of the people live in the East,and most of the land is in the East.
Explanation:
Hopefully this helps!
pls give me the answers
Answers
Answer:
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Explanation:
when the national forest policy was formed in india
Answers
Answer:
the national forest policy was formed in 19th October 1894 in India
Explanation: