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aniked [119]
3 years ago
11

What is a constellation as astronomers define it today? What does it mean when an astronomer says, “I saw a comet in Orion last

night”?
Physics
1 answer:
MissTica3 years ago
4 0

Explanation:

Constellation: The complete sky has been divided in 88 different areas, in a way we have divided Earth in countries, not necessarily having same shapes and size. These 88 areas are known as constellations. These contains a lot of stars. When we join the brightest stars together we can imagine a shape out of them which is called as Asterism. Most of the people are unaware of this difference. Some of the famous constellations are Orion, Taurus, Gemini, Hydra, Ursa Major etc.

When an astronomer says that there is a comet is in the Orion, he means that a comet is in the boundaries of Orion constellation.

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What do these weapon stats mean?
kaheart [24]

Answer:

its sort of like how Pounds are measured in lbs

Explanation:

Pounds are measured in lbs when they dont sound anything similar, same thing applies to gun technology.

5 0
3 years ago
How did dalton improve the atomic theory more than 2000 years after democritus's hypothesis about atoms?
suter [353]
<span>Dalton improved the atomic theory by establishing that elements are made of atoms & that all atoms of an element are identical.</span>
6 0
3 years ago
Steam enters an adiabatic turbine at 5 MPa and 4500C and leaves at a pressure of 1.4 MPa. Determine the work output of the turbi
REY [17]

Answer:350.92 KJ/kg

Explanation:

Given the process is reversible adiabatic i.e it is isentropic

P_1=5 MPa

T_1=4500 MPa

P_2=1.4 MPa

From steam table

h_1=3317.03KJ/kg

For isentropic process s_1=s_2

at P_2=1.4 MPa

s_2=6.82 KJ/kg-k

h_2=2966.11 KJ/kg

Therefore Work output of the turbine per unit mass of steam is =h_1-h_2

=3317.03-2966.11

=350.92 KJ/kg

8 0
3 years ago
A 2000 kg car is driving at 5 m/s on wet asphalt, but then makes a turn on some ice and loses control. The driver applies brakes
lesya [120]

Answer:

10,000kgm/s

Explanation:

Since we not told what to look for, we can as well find the momentum of the car.

momentum = mas * velocity

Given

Mass of the car = 2000kg

velocity = 5m/s

Substitute into the formula

Momentum = 2000 * 5

Momentum = 10000kgm/s

Hence the momentum of the car is 10,000kgm/s

5 0
3 years ago
Which statement did Ernest Rutherford make about atoms?
PtichkaEL [24]

Answer:

Option A

Explanation:

Ernest Rutherford concluded that the atom has a small, dense center which constitutes the mass of the whole atom. He called it a "Nucleus". He also said that most of the space in the atom is empty.

6 0
4 years ago
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