The planet and its moon gravitationally attract each other. Rank the force of attraction between each pair from greatest to least.
Answers
The greatest to the least would be:
- 2m-D-m
- M-D-2m
- M=D=M
- M=2D=2M
What is meant by force of attraction
The force of attraction refers to the physical phenomenon in which objects are drawn toward each other due to gravitational, electromagnetic, or other fundamental forces. This attraction can be explained by several different interactions, including:
Gravitational Attraction: This is the force of attraction between two objects with mass. According to Newton's law of universal gravitation, every mass in the universe attracts every other mass with a force directly proportional to the product of their masses and inversely proportional to the square of the distance between them.
Read more on force of attraction brainly.com/question/16033085
#SPJ3
F = Gm₁m₂ / d²
where m₁ and m₂ are there masses, d is the distance, and G is the gravitational constant. These means that the force is directly related to the masses and inversely to the distance. From the given choices, B will have the greatest energy, followed by C and A, respectively. Lastly, the least force will that be of D.
Related Questions
While skateboarding at 19 km/h, Alana throws a tennis ball at 11 km/h to her friend Oliver. If Alana is the reference frame, the speed of the tennis ball is
An "E" tuning fork with a frequency of 329 Hz is used to test the "E" note of a piano. Four beats are heard. This means _____.The piano key is in tune. The piano key is out of tune and has a frequency of 333 Hz. The piano key is out of tune and has a frequency of 325 Hz. The piano key is out of tune and has a frequency of either 325 or 333 Hz
Which of these is not a conservative force and does not have a form of potential energy connected with it?
As a tile falls from the roof of a building to the ground its momentum is conserved.
302
324
280
Answers
Wellll . . . it's doubtful that you'd hear the sound of a train
from 100 km away (about 62 miles), but this is a fun problem
so let's go through it just for the math.
Online, I looked up the speed of sound in various materials.
Here's what I found:
-- Speed of sound in normal air . . . . . 343 m/s
-- Speed of sound in iron . . . . . 5,130 m/s
But let's go a little farther !
Rails used to be made of cast iron or wrought iron.
But now they're made of hot rolled steel.
-- Speed of sound in steel . . . . . 6,100 m/s
Time to cover the distance = (distance) / (speed)
Time through air = (100,000 m) / (343 m/s)
= 291.5 sec = 4 minutes 51.5 seconds
Time through old iron rails = (100,000 m) / (5,130 m/s)
= 19.5 seconds (272 sec sooner)
Time through new steel rails = (100,000 m) / (6,100 m/s)
= 16.4 seconds (275 sec sooner)
Final answer:
The speed of sound varies in different mediums. In Physics, the speed of sound in air at 0°C is about 331.5 m/s, while in iron it's about 5130 m/s. If a train is 100 km away, the sound travelling through the iron rails would reach you approximately 282 seconds sooner than the sound through the air.
Explanation:
In Physics, the speed at which sound travels depends on the medium through which it's travelling. The speed of sound in air at 0°C is approximately 331.5 m/s. On the other hand, the speed of sound in iron is about 5130 m/s.
To determine how much sooner you would hear the train, we need to calculate the difference in time it takes for the sound to travel through these two mediums.
When the train is 100 km away, we get the following:
- Time through air: 100000 m / 331.5 m/s = 301.66 seconds
- Time through iron: 100000 m / 5130 m/s = 19.49 seconds
The difference is, therefore, approximately: 301.66 - 19.49 = 282.17 seconds. Thus, the sound will reach you 282 seconds sooner if you listen to the rails rather than the air.
Learn more about Speed of Sound here:
#SPJ12
Answers
0.010 meter through a potential difference of
9.0 volts?
(1) 2.7 × 10^3 J (3) 3.0 J
(2) 27 J (4) 3.0 × 10^−2 J
Answers
a. ocean waves
b. UV rays
C. Laser
d. X-rays
e. microwave
Answers
Answers
Answer:
Using a good pair of binoculars, you observe a section of the sky where there are stars of many different apparent brightnesses. You find one star that appears especially dim. This star looks dim because it is farther away or it has a small radius.
Explanation:
Apparent magnitude in astronomy is the apparent brightness of a star that is seen from the Earth, that brightness can variate according to the distance at which the star is from the Earth or due to its radius.
That can be demonstrate with the next equation:
(1)
Where F is the radiant flux received from the star, L its intrinsic luminosity and r is the distance.
For example, an observer sees two motorbikes approaching it with its lights on but one of the motorbikes is farther, so the light of this one appears dimmer, even when the two lights emit the same amount of energy per second.
That is because the radiant flux decreases with the square distance, as can be seen in equation 1.
In the other hand, a bigger radius means that the gravity in the surface of the star will be lower, allowing that light can escape more easily:
(2)
Where g is the surface gravity in the star, G is the gravitational constant, M is the mass of the star and R is the radius of the star.
Answers
If your answers look like this...
a. models have the ability to communicate
b. models have the ability to correctly predict all outcomes
c. model have the ability to test predictions
d. models have the ability to save time
Then it's D
Final answer:
Models are representations that help us understand and analyze real-life situations, but they may have limitations or assumptions that make some statements not universally true.
Explanation:
Models are representations of real-life situations or things that help us understand and analyze them better. However, the statement, 'all of the following are true of models except,' implies that there are some characteristics that do not apply to models. Different models may have different purposes, limitations, or assumptions that may make some statements not universally true. For example, while models can provide insights and predictions, they cannot capture the full complexity of the real world or account for all variables. Models are valuable tools in various fields and disciplines, including social studies, as they help us simplify, analyze, and communicate complex phenomena and processes.
Learn more about models here:
#SPJ2