I have seen the large hadron collider
Supermassive black holes astronomers believe to be driving activity in the centers of galaxies.
A galaxy is a device of stars, stellar remnants, interstellar gas, dust, and darkish count, sure together with the aid of gravity. The phrase is derived from the Greek galaxies, actually 'milky', a connection with the Milky manner galaxy that incorporates the solar system. Galaxies, averaging an envisioned a hundred million stars, range in length from dwarfs with much less than one hundred million stars, to the most important galaxies acknowledged – supergiants with one hundred trillion stars, each orbiting its galaxy's center of mass. most of the mass in a typical galaxy is within the form of a darkish count number, with just a few percentages of that mass seen within the form of stars and nebulae. Supermassive black holes are a commonplace feature in the centers of galaxies.
the gap among galaxies is filled with tenuous gasoline (the intergalactic medium) with an average density of much less than one atom consistent with a cubic meter. most galaxies are gravitationally prepared into businesses, clusters, and superclusters. The Milky way is part of the nearby organization, which dominates alongside the Andromeda Galaxy.
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Answer:
r = 2.8524 x10⁷ m = 28524 km
Explanation:
First, we calculate the angular speed of the satellite:
Now, we use the formula for the gravitational force. Since gravitational force will be acting as the centrifugal force due to circular motion. Therefore,
where,
F = Gravitational Forc = 105 N
m = mass of satellite = 40.9 kg
v = linear speed of satellite = rω = r(3 x 10⁻⁴ rad/s)
r = radius of orbit = ?
Therefore,
<u>r = 2.8524 x10⁷ m = 28524 km</u>
Answer:
The kinetic energy will be 49000[J]
Explanation:
This problem is the common use of energy conservation when the body is at the top at the point where its elevation is the highest (usually the lowest point is taken as the reference level) at that point the body will have the highest potential energy, then as the body descends its potential energy decreases but its kinetic energy begins to increase. By the time the body reaches the lowest point or reference point, its potential energy will be zero, but its maximum kinetic energy, as all potential energy has become kinetic energy.
Therefore:
This energy will be transformed into kinetic energy at the bottom of the hill.
Answer:
Weight = 45880 kN
Explanation:
Gas pipeline material is steel.
Density of steel = 7850 kg/m³
Mass = Volume x Density
Volume = Area x Length
Outer diameter = 610 mm
Internal diameter = 610 - 2 x 12.7 = 584.6 mm
Length = 25 km = 25000 m
Volume = 25000 x 0.0238 = 595.78 m³
Mass = 595.78 x 7850 = 4676875.12 kg
Weight = Mass x Acceleration due to gravity = 4676875.12 x 9.81 = 45880 kN
Weight = 45880 kN