Answer: The correct option is (c).
Explanation:
The electric force exists between the charged particles only.
The electric force between the negatively or positively charged particles is attractive in nature while the electric force between the negative and the positive charged particles is repulsive in nature.
Matter consists of atoms. Atom consists of electrons, protons and neutrons. Only, electrons can move. If the atom loses electrons then matter gets negatively and positively charge respectively.
In the given problem, the matter is mostly neutral on a large scale. On a large scale, the electric forces are close to zero.
Therefore, the correct answer is (c).
B. white dwarf.
C. red giant.
D. nebula.
User:
15. With an average surface temperature of about 737 K, _______ is the hottest planet.
A. Mars
B. Mercury
C. Earth
D. Venus
Correct answer choice for question 1 is:
D) Nebula.
Explanation:
A nebula is an interstellar cloud of dust, hydrogen, helium and other ionized vapors. Basically, the nebula was a sign for any distributed enormous object, including galaxies behind the Milky Way. Most nebulae are of a large size, some are numbers of light years in diameter. A nebula that is almost visible to the human eye from Earth would appear larger, but no flashing, from close by. The Orion Nebula, the glowing nebula in the sky that controls a region twice the diameter of the full Moon, can be observed with the naked eye but was dropped by early scientists.
Correct answer choice for question 2 is :
D) Venus
Explanation:
Venus is the second planet from the Sun, revolving it every 224.7 Earth days. It has the largest revolution time of any planet in the Solar System and turns in the different direction to most other planets. It does not have any real satellites. It is the second glowing natural object in the night sky after the Moon, leading an obvious magnitude of 4.6 bright quite to throw shadows at night and, unusually, obvious to the naked eye in full daylight.
The force that opposes your push when you attempt to move a box is the frictional force. In a situation where the box doesn't move, it is specifically static friction. If the box was to move, the opposing force would then be kinetic friction.
When you push on a box and find it difficult to move, the force opposing your push is known as frictional force. This is a resistive force that opposes the motion of an object. In a scenario where the box doesn't move at all despite your push, the static friction is equal to the applied force. However, if the box moves, it is the kinetic friction that is work. Frictional force depends on the nature of the contact surfaces and the normal force (force pushing the two surfaces together).
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b. just above Earth's surface
c. on Earth's surface
The acceleration of gravity at the surface of the Earth is approximately 9.8 meters (32 feet) per second per second. As a result, during free fall, an object's speed rises by around 9.8 meters per second.
The force that binds all masses in the universe together, particularly the pull of the earth's mass on objects that are close to its surface.
The term gravitational force refers to the force that the earth exerts on a body. Examples of motion caused by gravitational force include the downward motion of water in a river, the downward motion of water in a stream, and the upward motion of a ball when it is thrown.
All physical things with mass are drawn to the gravitational force, which can be thought of as an attracting force. It is the known natural force that is by far the weakest. representation in mathematics. The formula for gravitational force is F = G m 1 m 2 r in mathematics.
The answer is on earth surface
To learn more about force of gravity refer to:
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