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taurus [48]
3 years ago
7

What do we mean by the event horizon of a black hole?

Physics
1 answer:
Fynjy0 [20]3 years ago
6 0

The correct answer is: C. It is the point beyond which neither light nor anything else can escape.

You might be interested in
10. How is the mass number calculated for an element?
masya89 [10]
It’s B, the sum of protons and neutrons
5 0
3 years ago
An asteroid exerts a 360-N gravitational force on a nearby spacecraft. If the spacecraft moves to a position three times as far
KIM [24]

Answer:

40 N

Explanation:

The gravitational force between the asteroid and the spaceship is given by:

F=G\frac{mM}{R^2}

where

G=6.67\cdot 10^{-11} m^3 kg^{-1} s^{-2} is the gravitational constant

M is the mass of the asteroid

m is the mass of the spaceship

R is the distance between the asteroid and the spaceship

The initial force is equal to:

F=G\frac{mM}{R^2}=360 N

Later, the spaceship moves to a position 3 times as far from the center of the asteroid, so R' = 3R. Therefore, the new force will be

F'=G\frac{mM}{R'^2}=G\frac{mM}{(3R)^2}=G\frac{mM}{9R^2}=\frac{1}{9}F

so, the force is decreased by a factor 9. Since the initial force was F=360 N, the new force will be

F'=\frac{360 N}{9}=40 N

3 0
4 years ago
Why neon is in the same group as helium?
guajiro [1.7K]
Neon and helium are both gases that fall under the Noble Gases section in the periodic table of elements.

Hope this helped to answer your question. :D

5 0
3 years ago
Where is the positive charge found in the atom
Minchanka [31]

Answer:

It is found in the Atomic Nucleus

Explanation:

PLEASE MARK ME BRAINLIST PLEASE

4 0
4 years ago
Read 2 more answers
a ball is thrown straight upward with an initial velocity of 16 m/s. use g+/- 10 m/s^2 for computations. how much time is requir
EleoNora [17]
Answer: t = 1.6s

Explanation: Use Fab 5 equation to solve for t (d is irrelevant so use equation without d)
vi = 16m/s, a = -10m/s^2, vf = 0m/s, t = ?

(Assume up is positive so acceleration is negative!!!)

a = vf - vi / t
-10 = 0 - 16 / t
-10t = -16
t = 1.6s

Hope this helps! :)
4 0
3 years ago
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