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svlad2 [7]
3 years ago
13

What is an asterism? Can you name an example?

Physics
1 answer:
Katen [24]3 years ago
6 0

Answer:

Collection of stars in the night sky that is popularly known.

The Great Diamond, Big dipper

Explanation:

An asterism is a collection of stars in the night sky that is popularly known. Asterisms are not recognised by the International Astronomical Union (IAU) as constellations. They are not constellations as constellations are a region of the night sky.

The Great Diamond is an asterism which consists of the four stars namely Cor Caroli in Canes Venatici, Denebola, Spica and Arcturus. Big dipper is also an asterism.

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A small remote-control car with a mass of 1.65 kg moves at a constant speed of v = 12.0 m/s in a vertical circle inside a hollow
Reil [10]

Answer:

N=63.69N

Explanation:

The normal force exerted on the car by the walls of the cylinder at the bottom of the vertical circle will be such that when substracted to the weight it must give the centripetal force, since at that point on the vertical F_{cp}=N-W=N-mg

We also know that the equation for the centripetal force is:

F_{cp}=ma_{cp}=\frac{mv^2}{r}

Mixing both equations we get:

N-mg=\frac{mv^2}{r}

N=mg+\frac{mv^2}{r}

Which for our values means:

N=(1.65Kg)(9.8m/s^2)+\frac{(1.65Kg)(12m/s)^2}{(5m)}=63.69N

8 0
3 years ago
Future space stations will create an artificial gravity by rotating. Consider a cylindrical space station 100 m diameter rotatin
Zielflug [23.3K]

Given Information:

Diameter = d = 100 m

Required Information:

Period = T = ?

Answer:

Period = T = 14.2 seconds

Explanation:

We know that a station revolving  at an angular velocity ω,  have an  acceleration given by

α = ω²r

Where ω is angular velocity and r is the radius of cylindrical space station.

Normal gravity means α = g = 9.8 m/s²

ω² = α/r

ω = √(α/r)

The radius is given by

r = d/2

r = 100/2

r = 50 m

ω = √(9.8/50)

ω = 0.4427 rad/sec

We also know that

ω = 2πf

f = ω/2π

f = 0.4427/2π

f = 0.0704 rev/sec

Finally time period is given by

T = 1/f

T = 1/0.0704

T = 14.2  sec

Therefore, the rotation period is 14.2 seconds.

3 0
4 years ago
The diameter of an automobile tire is closest to
slamgirl [31]

Answer:

(1)  10^−2 m

Explanation:

The diameter of the tire of an automobile is generally expressed in centimetres; we can say that the diameter of a tire is generally about

d = 20 cm (20 centimetres)

Now we have to verify which option is closest to this value. To do that, we have to keep in mind the equivalence between metres and centimetres; in fact, we have:

1 cm = 10^{-2} m

This means that we can rewrite the diameter of the tire of a car as

d=20 cm = 20\cdot 10^{-2} m

By comparing it with the given options, we see that the closest option is

(1)  10^−2 m

which is therefore the correct answer.

6 0
4 years ago
What do biologist geologist have in common how are they different
Delicious77 [7]
The prefix for Bio is life so a biologist studies life of living organisms
The prefix for Geo is earth so it would be the study of earth.
What is in common would be animals and plants
what is different is an Geologist studies only earth Biologist studies everything living. I hope this was helpful and I didn't confuse you.

6 0
3 years ago
An alpha particle is identical to a _____.
djyliett [7]
An alpha particle is identical to a helium nucleus. The correct option among all the options given in the question is option "A". In case of both the alpha particle nucleus and helium nucleus, there are two protons and two neutrons. Alpha particles are generally formed during the process of alpha decay. They can also be produced in other ways.
8 0
4 years ago
Read 2 more answers
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