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
Alex777 [14]
3 years ago
9

True or False. Recent findings lend strong support to the theory that a black hole lies at the center of the Milky Way and of ma

ny of the 100 billion other galaxies estimated to exist in the universe.
Physics
1 answer:
Genrish500 [490]3 years ago
7 0

Answer:

True

Explanation:

In 2019 was taken the first image of a supermassive black hole in the center of the galaxy M87 with the Event Horizon Telescope, which is a network of radio telescope located in different points of the Earth, with the purpose of making a telescope of the size of the Earth.

A radio telescope is an antenna that is capable to perceive the light in the radio part of the electromagnetic spectrum¹.

It is important to notice that in the picture what it can be seen is the effect that the black hole has in the nearby stars.

Key terms:

¹Electromagnetic spectrum: decomposition of light in its different wavelengths (from radio waves to gamma rays).

You might be interested in
What is the definition of specific heat capacity​
mamaluj [8]

Answer:

heat energy that is needed to raise tempeture

3 0
3 years ago
What is the purpose of the wire coil in an electromagnet?
ziro4ka [17]
It is to conduct electricity in the magnet so it has an electric field.

Please BRAINLIEST!
3 0
3 years ago
A wad of clay of mass m1 = 0.49 kg with an initial horizontal velocity v1 = 1.89 m/s hits and adheres to the massless rigid bar
notka56 [123]

Answer:

<h2>The angular velocity just after collision is given as</h2><h2>\omega = 0.23 rad/s</h2><h2>At the time of collision the hinge point will exert net external force on it so linear momentum is not conserved</h2>

Explanation:

As per given figure we know that there is no external torque about hinge point on the system of given mass

So here we will have

L_i = L_f

now we can say

m_1v_1\frac{L}{2} = (m_2L^2 + m_1(\frac{L}{2})^2)\omega

so we will have

0.49(1.89)(0.45) = (2.13(0.90)^2 + 0.49(0.45)^2)\omega

\omega = 0.23 rad/s

Linear momentum of the system is not conserved because at the time of collision the hinge point will exert net external force on the system of mass

So we can use angular momentum conservation about the hinge point

6 0
3 years ago
PV = nRT, is the a. equation of state of an ideal gas
romanna [79]

Ideal gas law:

PV = nRT

P = pressure, V = volume, n = # of moles, R = gas constant, T = temperature

Equipartition theorem:

Each degree of freedom that a molecule has adds 0.5kT to its total internal energy where k = Boltzmann's constant and T = temperature

2nd law of thermodynamics:

A set of governing principles that restrict the direction of net heat flow (always hot to cold, heat engines are never 100% efficient, entropy always tends to increase, etc)

Clearly the answer is Choice A

3 0
3 years ago
Which phrase best describes a machine?
Nastasia [14]

Answer:

All of the above.

Explanation:

All Machines make work easier.

They can move objects.

They have multiple parts.

And the use energy.

5 0
3 years ago
Read 2 more answers
Other questions:
  • A rowboat has a momentum of 241.5 kg*m/s. if the rowboat has a mass of 115kg, what its it's speed?
    12·1 answer
  • You are instructed to remove the appendicular skeleton of a cadaver. To accomplish this goal, you would
    9·1 answer
  • Two stones are launched from the top of a tall building. One stoneis thrown in a direction 30.0^\circ above the horizontal with
    6·1 answer
  • Which of the following are early clues that signal an earthquake may occur? Select all that apply. Changes in magnetic propertie
    15·2 answers
  • If a projectile hits a stationary target, and the projectile continues to travel in the same direction, the mass of the projecti
    6·1 answer
  • A cheetah ran 300 feet in 2.92 seconds. What was the cheetah’s average speed in miles per hour?
    5·1 answer
  • A distance-time graph indicates that an object moves 100 m in 4 s and then remains at rest for 6 s. What is
    9·1 answer
  • A uniform rod of length 50cm and mass 0.2kg is placed on a fulcrum at a distance of 40cm from the left end of the rod. At what d
    12·1 answer
  • A ball filled with an unknown material starts from rest at the top of a 2 m high incline that makes a 28o with respect to the ho
    5·1 answer
  • hen approaching a curve, it is best to: A. Search for possible collision traps and escape paths B. Stay close to the centerline
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!