A black hole is a star that has begun to collapse in on itself
too little gravity to emit light
gotten to the middle of its life
become too bright to see

Answers

Answer 1

Answer: A black hole is a star that has completely collapsed in on itself.

Related Questions

The acceleration due to gravity on Jupiter is greater than that on Earth. On Jupiter, a person will weigh .
A particle of charge and mass kg is released from rest in a region where there is a constant electric field of +668 N/C. What is the displacement of the particle after a time of?
Light of wavelength 550 nm falls on a slit that is 3.50 x 10^-3 mm wide. How far from the central . maximum will the first diffraction maximum fringe be if the screen is 10.0 m away?
When Emma pushes a bag with a force of 27 newtons, the coefficient of kinetic friction between the bag and the floor is 0.23. What is the normal force acting on the bag by the floor?. A. 0.085 newtons B. 27 newtons C. 2.7 × 10^2 newtons . D. 1.2 × 10^2 newtons
An upward force is applied to a 6.0–kilogram box. this force displaces the box upward by 10.00 meters. what is the work done by the force on the box?

Why is the Earth's surface warmer than the surface of other planets, like Mars?a. The Earth's atmosphere releases heat.
b. The Earth's surface receives less energy from the sun's rays.
c. The Earth's rotation transfers energy more evenly.
d. The Earth's atmosphere traps heat.

Answers

The earth's rotation transfers energy more evenly.

Name the type of current a. used in houseold supply b. given by a cell

Answers

Household, at the outlet . . . Alternating current, 117v RMS, 60 Hz. / / / Flashlight cell . . . Direct current, nominal 1.5v .

A 2.0 m tall object is 12.0 m from a convex lens that has a 4.0m focal length. Determine the image size and distance from the
lens.?

Answers

Great question! To determine the image size and distance from the lens, we can use the lens formula:

1/f = 1/v - 1/u

where f is the focal length of the lens, v is the image distance, and u is the object distance.

Given that the focal length (f) is 4.0 m and the object distance (u) is 12.0 m, we can substitute these values into the formula:

1/4 = 1/v - 1/12

To solve for v, we need to rearrange the equation:

1/v = 1/4 + 1/12

1/v = (3 + 1)/12

1/v = 4/12

1/v = 1/3

Now, we can find the value of v by taking the reciprocal of both sides:

v = 3 meters

So, the image distance (v) is 3 meters.

To find the image size, we can use the magnification formula:

magnification (m) = -v/u

Given that the object height (h) is 2.0 meters, we can substitute these values into the formula:

m = -v/u = -3/12 = -1/4

The negative sign indicates that the image is inverted. The magnification value of -1/4 means that the image is one-fourth the size of the object.

Therefore, the image size is 1/4 of the object's height, which is 1/4 * 2.0 = 0.5 meters.

So, the image size is 0.5 meters and the image distance is 3 meters from the convex lens.

I hope this explanation helps! Let me know if you have any further questions.

Which of the following statements are true?A. Energy as heat flows from a lower temperature to a higher temperature
B. Energy as heat flows from a higher temperature to a lower temperature
C. The amount of het in a closed system is constant
D. Energy as heat flowing into an object is determined by the amount of work done on the object.

I know the answer is not C.

Answers

'B' and 'C' are both true.

B. Energy as heat flows from a higher temperature to a lower temperature.

Which of the following best describes a plane?a. The surface of a flat table
B. The edge of a desk
C. A curve in a road
D. The point of intersection of two walls

Answers

From that particular short list, the item that best describes a plane
is the surface a flat table (or of any other flat thing).

-- The edge of a desk is a piece of a straight or curved line.

-- A curve in a road is a piece of a curved line.

-- The intersection of two walls is a piece of a straight line.

The correct answer would be A. The surface of a flat table.

Inertia is defined as the tendency of an object to resist a change in motion. Objects moving in space tend to move in straight lines because of inertia. If this is the case, then why do planets orbit in elliptical paths?A The magnetic force caused by the lining up of the distant stars pushes the planets into curved paths.
B The force of gravity between planets keeps them on a curved path and prevents them from leaving the solar system.
C The force created by the nuclear fusion of the hydrogen in the Sun causes the planets' curved paths.
D The speed of the planets and the gravitational pull of the Sun cause the planets' curved paths.