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
yulyashka [42]
3 years ago
12

Stellar evolution is _____. the process of planetary formation the life cycle of a star the death of a star how comets form

Physics
2 answers:
frosja888 [35]3 years ago
8 0
B.) Stellar evolution is "<span>the life cycle of a star"

Hope this helps!</span>
Mnenie [13.5K]3 years ago
6 0
The life cycle of a star.
Planetary formation has nothing to do with the word stellar
The death of a star is only one phase in it's evolution
How comets form is a branch of planetary, as comets are actually speeding asteroids, or so I've heard :)
You might be interested in
Which is an example of a screw?
NikAS [45]
Which one looks like a screw
A is shoes
B is a fork (lever)
C is a wind chime shaped like a screw
D is a stapler (lever)
5 0
3 years ago
George determines the mass of his evaporating dish to be 3.375 g. He adds a solid sample to the evaporating dish, and the mass o
zhannawk [14.2K]

Explanation:

The given data is as follows.

       Mass of evaporating dish = 3.375 g

    Total mass = Mass of solid sample + evaporating dish

That is, Mass of solid sample + evaporating dish = 26.719 g

Therefore, we will calculate the mass of solid sample as follows.

    Mass of solid sample = (Mass of solid sample + evaporating dish) - mass of evaporating dish

                            = 26.719 g – 3.375 g

                            = 23.344 g

Thus, we can conclude that mass of his solid sample must be 23.344 g.

3 0
4 years ago
A spherical balloon has a radius of 6.95m and is filled with helium. The density of helium is 0.179 kg/m3, and the density of ai
klio [65]

Answer:

602.27 kg

Explanation:

The computation of the largest mass of cargo the balloon can lift is shown below:-

Volume of helium inside the ballon= (4 ÷ 3) × π × r^3

= (4 ÷ 3) × 3.14 × 6.953

= 1406.19 m3

Mass the balloon can carry = volume × (density of air-density of helium)

= 1406.19 × (1.29-0.179)

= 1562.27 kg

Mass of cargo it can carry = Mass it can carry - Mass of structure

= 1562.27 - 960

= 602.27 kg

6 0
3 years ago
After touchdown a fighter jet passes a marker on the runway at an instantaneous speed of 100 m/s and constant negative accelerat
daser333 [38]

Given that,

Deacelectration = -15 m/s²

Negative sign shows the declaration

Slowly speed = 25 m/s

Acceleration = 35 m/s²

Speed = 170 m/s

We need to calculate the time

Using equation of motion

v=u+at

Where, v = final velocity

u = initial velocity

a = acceleration

t = time

Put the value into the formula

25=0+15\times t

t=\dfrac{25}{15}

t=1.66\ sec

We need to calculate the distance from the original runway

Using equation of motion

s=ut+\dfrac{1}{2}at^2

s=0+\dfrac{1}{2}\times35\times(1.66)^2

s=48.2\ m

Hence, The distance from the original runway is 48.2 m.

3 0
4 years ago
A playground merry-go-round with a radius of 1.80 m has a mass of 120 kg and is rotating with an angular speed of 0.350 rev/s. W
stepan [7]

Answer:

1.64 rad/s

Explanation:

Given,

radius of merry-go-round, r = 1.80 m

mass of  merry-go-round, M = 120 Kg

angular speed, ω = 0.350 rev/s

Initial angular speed = 2π x 0.350 = 2.12 rad/s

Mass of child, m = 36.5 Kg

Moment of inertia of the  merry-go-round

I = \dfrac{1}{2}Mr^2

I = \dfrac{1}{2}\times 120\times 1.8^2

I = 349.92\ kg.m^2

L= I ω = 349.92 x 2.12 = 769.41 kgm²/s

Child moment of inertia

I₂ = m r^2 = 36.5 x 1.8² = 118.26 kg.m²

Final moment of inertia,

I_f = 349.92+118.26 = 468.18 kg.m²

Final speed = \dfrac{769.41}{468.14}

\omega_f = 1.64 \rad/s

angular speed of the child is equal to 1.64 rad/s

4 0
4 years ago
Other questions:
  • A 9.0-kg box of oranges slides from rest down a frictionless incline from a height of 5.0 m. A constant frictional force, introd
    8·1 answer
  • As steam is slowly injected into a turbine, the angular acceleration of the rotor is observed to increase linearly with the time
    15·1 answer
  • How is it possible for two objects to have the same momentum but different velocities give an example
    10·1 answer
  • Physical Science<br> convert 5.3 hl to dal
    14·1 answer
  • A 75.0-kg person is riding in a car moving at 20.0 m/s when the car runs into a bridge abutment. (a) calculate the average force
    5·1 answer
  • Maria is trying to meet her friends at the pool but construction is blocking her path from the parking lot directly to the pool.
    15·1 answer
  • Convert 32 centimeters into inches. (1 in = 2.54 cm)
    5·2 answers
  • A skateboarder rolls horizontally off the top of a staircase and lands at the bottom. The staircase has a horizontal length of 1
    11·1 answer
  • While getting buff at the gym you lift a bunch of weights applying 1000N of force to lift them from the ground to a height of 2m
    11·1 answer
  • If a bowling ball of mass 7.0 kg has a potential energy of 1100 Joules, how high above the ground is the bowling ball?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!