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
kirza4 [7]
3 years ago
13

Which characteristics can be used to differentiate star systems? Check all that apply.

Physics
2 answers:
hjlf3 years ago
7 0

The answer is:

the number of stars in the system

the age of the stars in the system

the way stars are organized in the system

I just finished this assignment, hope it helped.

Dovator [93]3 years ago
6 0

♡ hello there ヾ(°∇° ) ♡

   Your answers are...

  ★ ... <u>A, C, and D</u> !!!! ★

×║hope this helps,║×

➶ have a nice day! ➷

       ↬ <u>ɢᴏᴛʜɪx</u> ♡

You might be interested in
An attack helicopter is equipped with a 20- mm cannon that fires 87 g shells in the forward direction with a muzzle speed of 853
uysha [10]

Answer

given,

mass of the shell = 87 g = 0.087 Kg

speed of the muzzle = 853 m/s

mass of the helicopter = 4410 kg

A burst of 176 shell fired in 2.93 s

resulting average force = ?

momentum of the shell = m v

                                       = 0.087 x 853

                                       = 74.21 kgm/s

momentum of 176 shell is = 176 p

                                          = 176 x 74.21

                                          = 13060.96

momentum of helicopter = - 13060.96 kgm/s

amount of speed reduce a = \dfrac{13060.96}{M}

                                          a= \dfrac{13060.96}{4410}

                                          a = 2.96 m/s²

velocity  = \dfrac{2.96}{2.93}

      v = 1.01 m/s

5 0
3 years ago
Read 2 more answers
A boulder released by a rockslide rolls 60 m in 4 s. What is its average speed?
Gelneren [198K]

Answer:

15 m per second

900m per minute

54,000 per hour

Explanation:

60 divided by 4 to get per second then times 60 for per minutes

then times 60 to get per hour

5 0
3 years ago
an object is hanging by a string from your rearview mirror. While you are decelerating at a constant rate from 25 m/s to rest in
viktelen [127]
This question has already previously been answered. :)

Here it is: brainly.com/question/2141424
5 0
3 years ago
A coin dropped in the lift it takes time 0.5 s to reach the floor when lift is staionary it takes time t when lift is moving up
BARSIC [14]

Answer:

t₁ > t₂

Explanation:

A coin is dropped in a lift. It takes time t₁ to reach the floor when lift is stationary. It takes time t₂ when lift is moving up with constant acceleration. Then t₁ > t₂,  t₁ = t₂,  t₁ >> t₂ ,  t₂ > t₁

Solution:

Newton's law of motion is given by:

s = ut + (1/2)gt²;

where s is the the distance covered, u is initial velocity, g is the acceleration due to gravity and t is the time taken.

u = 0 m/s, t₁ is the time to reach ground when the light is stationary and t₂ is the time to reach ground when the lift is moving with a constant acceleration a.

hence:

When stationary:

s=\frac{1}{2}gt_1^2\\\\t_1^2=\frac{2s}{g}  \\\\When\ moving\ with\ acceleration(a):\\\\s=\frac{1}{2}(g+a)t_2^2\\\\t_2^2=\frac{2s}{g+a}

Hence t₂ < t₁, this means that t₁ > t₂.

4 0
3 years ago
A certain freely falling object, released from rest, requires 1.95 s to travel the last 23.5 m before it hits the ground. (a) Fi
Ratling [72]

Answer:

(a). The velocity of the object is -2.496 m/s.

(b).  The total distance of the object travels during the fall is 23.80 m.

Explanation:

Given that,

Time = 1.95 s

Distance = 23.5 m

(a). We need to calculate the velocity

Using equation of motion

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

Put  the value into the formula

-23.5=u\times1.95+\dfrac{1}{2}\times(-9.8)\times(1.95)^2

u=\dfrac{-23.5+4.9\times(1.95)^2}{1.95}

u=-2.496\ m/s

(b). We need to calculate the total distance the object travels during the fall

Using equation of motion

v = u+gt

Put the value in the equation

-2.496=0-9.8\times t

t =\dfrac{2.496}{9.8}

t=0.254\ sec

The total time is

t'=t+1.95

t'=0.254+1.95

t'=2.204\ sec

We need to calculate the distance

Using equation of motion

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

Put the value into the formula

s=0+\dfrac{1}{2}\times9.8\times(2.204)^2

s=23.80\ m

Hence, (a). The velocity of the object is -2.496 m/s.

(b).  The total distance of the object travels during the fall is 23.80 m.

4 0
3 years ago
Other questions:
  • Air "breaks down" when the electric field strength reaches 3×106n/c, causing a spark. a parallel-plate capacitor is made from tw
    11·1 answer
  • If it takes 320 N of force to push a box up a ramp, yet it would take 1,600 N of force to lift the box straight up, what is the
    9·1 answer
  • A particle is moving along a projectile path where the initial height is 160 feet with an initial speed of 144 feet per second.
    14·2 answers
  • Which of the following types of pollution is NOT linked to coal-burning power plant emissions?
    8·1 answer
  • Please help! 30Points!! An ultrasound machine uses waves to create images. The machine uses sound waves and which wave interacti
    6·2 answers
  • Which is a product of photosynthesis? glucose water starch carbon dioxide
    13·2 answers
  • How would you find the resistance of a parallel circuit with n identical resistors?
    9·2 answers
  • How do skiers slide across the ice?
    11·1 answer
  • Light travels 3,00,000 km/s . Is it velocity or speed?​
    6·1 answer
  • 4. What determines which goods a country should produce and export?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!