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
Makovka662 [10]
3 years ago
13

The beginning development of a star is marked by a supernova explosion, with the gases present in the nebula being forced

Physics
1 answer:
GenaCL600 [577]3 years ago
4 0

The beginning development of a star is marked by a supernova explosion, with the gases present in the nebula being forced to scatter. As the star shrinks, radiation of the surface increases and create pressure on the outside shell to push it away and forming a planetary nebula or white dwarf.

You might be interested in
It takes light from the closest star to Earth (other than the Sun) about four years to reach Earth. If intelligent life were on
mafiozo [28]

If the intelligent aliens on that distant planet could receive our signal, and then reply to us INSTANTLY with no delay, then our Scientists on Earth would hear the response <em>eight years after</em> they sent their original greeting.

Light and radio waves both travel through space at the same speed.  If our scientists sent a radio transmission to that distant planet, it would take four years for the radio message to get there and be heard.  Any response would take four years to travel back to us.  If the aliens didn't dilly-dally and sent their response immediately, the round trip would total up to eight years.  

4 0
3 years ago
The two spheres pictured above have equal densities and are subject only to their mutual gravitational attraction. Which of the
kiruha [24]

Answer:

Gravitational force

Explanation:

If two spheres have equal densities and they are subject only to their mutual gravitational attraction. We need to say that the quantities that must have the same magnitude for both spheres. So, the correct option is (E) i.e. gravitational force.

It is because of Newton's third law of motion. It states that the force due to object 1 to object 2 is same as force due to object 2 to object 1. The two forces act in opposite direction.  

Hence, the correct option is (E) "Gravitational force".                        

8 0
3 years ago
What is the speed of a 55.0 kg skydiver who has 7.81 x 104 J of kinetic energy?
KATRIN_1 [288]

Answer:

v=53.3m/s

Explanation:

Ek=1/2mv²

7.81×10⁴=1/2×55.0v²

v= the square root of 7.81×10⁴/0.5×55.0

v=53.3m/s

5 0
4 years ago
A bowling ball is launched off the top of a 240-foot tall building. The height of the bowling ball above the ground t seconds af
Vilka [71]

Answer:

V = (-32t +32) ft/s

The velocity of the bowling ball after t seconds is the time derivative of the position function s(t). To obtain the velocity from s(t) we simply differentiate s(t) with respect to t. That is

V = ds(t)/dt = -16×2t + 32×1 = -32t + 32.

When differentiating, you multiply the coefficient of each term in the equation with the power of the variable and then reduce the power by 1 just like above.

Explanation:

8 0
3 years ago
An object experiences a 8.9 N force and accelerates 6 m/sec2. What is the object's
Inessa [10]

b stupidrwfs

planation:

3 0
3 years ago
Other questions:
  • Un móvil con velocidad inicial de 19,8km/h adquiere una aceleración constante de 2,4m/s^2. Determine la velocidad y el espacio r
    6·1 answer
  • Which statement about the dark nebulae is true? Group of answer choices They can be penetrated only with longer wavelengths such
    5·1 answer
  • Which statements describe nuclear reactions? Check all that apply.
    6·2 answers
  • 16.
    14·2 answers
  • if a toaster produces 8 ohms of resistance in a 120 v circuit, what is the amount of current in the circuit
    8·1 answer
  • A p-type Si sample is used in the Haynes-Shockley experiment. The length of the sample is 2 cm, and two probes are separated by
    5·1 answer
  • Which of e following conditions would decrease the ability of a person to bear a sound?
    13·1 answer
  • Microwaves travel at the speed of light, 300,000 km/s. What is the wavelength of a microwave received at 1000 gigahertz?
    9·1 answer
  • You take a trip to Oklahoma City. The turnpike between Tulsa and OKC
    14·1 answer
  • Are the acceleration and force vectors related? does the simulation show this relation?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!