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
Sindrei [870]
3 years ago
6

The BEST description of a light-year is A) the speed of light in a vacuum. B) the age of a one-year-old star. C) the distance li

ght travels in a year. D) the time it takes light to travel from Earth to the Sun.
Physics
1 answer:
Deffense [45]3 years ago
5 0
C is the answer
D is impossible
A and B are false

Hope this helps!

Please crown;)
You might be interested in
Solid are _______, usually in a regular repeating pattern
Temka [501]

Answer:

particles or arranged will be the answer depending on the previous line.

4 0
3 years ago
Read 2 more answers
The geocentric model of the universe stated that _____.
Natalka [10]
Earth was the center of the universe
7 0
3 years ago
Read 2 more answers
Is work done in this example: A student lifting a heavy backpack off of the floor.
vagabundo [1.1K]
I don't know what u mean
4 0
3 years ago
Read 2 more answers
Two objects, one having twice the mass of the other, are initially at rest. Two forces, one twice as big as the other, act on th
Elodia [21]

<em><u>Note: There is no image to take as a reference, so I'm assuming F2 directed to the right and F1 to the left, and F2=2F1</u></em>

Answer:

\displaystyle a=\frac{F}{3M}

<em>to the right</em>

Explanation:

<u>Net Force</u>

When several forces are applied to a particle or a system of particles, the net force is the sum of them all, considering each force as a vector. As for the second Newton's law, the total force equals the product of the mass by the acceleration of the system:

\vec F_n=m\cdot \vec a

If the net force is zero, then the system of particles keeps at rest or at a constant velocity.

The system of particles described in the question consists of two objects of masses m1=M and m2, where

m_2=2m_1=2M

Two forces F1=F and F2 act individually on each object in opposite directions and

F_2=2F_1=2F

We don't get to see any image to know where the forces are applied to, so we'll assume F2 to the right and F1 to the left.

The net force of the system of particles is

F_n=2F-F=F

The mass of the system is

m_t=m_1+m_2=3M

Thus, the acceleration of the center of mass of the system is

\displaystyle a=\frac{F}{3M}

Since F2 is greater than F1, the direction of the acceleration is to the right.

Note: If the forces were opposite than assumed, the acceleration would be to the left

6 0
3 years ago
If the masses of an object increase and their distance from each other stays the same the force of gravity
jok3333 [9.3K]
Gravity<span> attracts </span>all objects<span> towards one </span>another<span>.</span>
4 0
3 years ago
Other questions:
  • A source charge generates an electric field of 1236 N/C at a distance of 4 m. What is the magnitude of the source charge?
    7·2 answers
  • The position of a 2.2 kg mass is given by x=(2t3â5t2) m, where t is in seconds.
    11·1 answer
  • A horizontal rifle is fired at a bull's-eye. The muzzle speed of the bullet is 670 m/s. The gun is pointed directly at the cente
    12·1 answer
  • A small asteroid of mass M is near a big asteroid of mass 3M. There are no other gravitating objects nearby. The magnitudes of t
    10·1 answer
  • suppose you increase your walking speed from 4 m/s to 12 m/s in a period of 1 second what is your acceleration
    12·1 answer
  • A. In what frame of reference does special relativity apply? b. In what frames must general relativity be used? c. Describe what
    15·1 answer
  • HELP || A delivery van has a mass of 7000 kg and a kinetic energy of 31,500 J. What is the speed? A) 4.5 m/s B) 2.1 m/s C) 3 m/s
    5·2 answers
  • A nucleus splits to form two or more smaller nuclei during which process?
    8·1 answer
  • After initially picking the stone up off the ground, a man exerts a 148 N force upwards on a 10 kg stone. What is the accelerati
    5·1 answer
  • How are radar and an approaching siren alike? How are they different?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!