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Gnesinka [82]
4 years ago
12

Why do we need gravity?

Physics
1 answer:
Stells [14]4 years ago
5 0
<span>Gravity is defined as the attraction between objects. All objects with mass<span> are affected by gravity. (Mass is what the matter is made of.) Gravity acts like a magnet pulling objects together. The Earth has gravity. Gravity holds everything close to this planet. Trees, water, animals, buildings, and the air we breathe are all held here by gravity.</span></span> <span>We need gravity for us to stick on the ground and not to float into the air. It stops objects from falling off our planet earth.</span>
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A charged particle decelerates as it moves from location a to location b. if va = 160 v and vb = 100 v, what is the sign of the
skelet666 [1.2K]

The sign of the charged particle is positively charged.

<h3>What is potential difference?</h3>
  • When a single charge is transported in an electric field, work is done by the potential difference (also known as electrical potential).
  • There is potential energy stored in this charge that could flow when work is done on it.
  • Voltage is the possibility of a single charge flowing. The need to flow increases with voltage.
  • Here, voltage can be the potential differences.

The potential difference between the 2 points determines the movement of that particle. An electron moves from lower to higher potential which is negatively charged, and a positively charged particle moves  from higher to lower potential.

Now, since the particle is moving from a point A having 160 v potential to point B having 100 v potential that is it is moving from higher potential to a lower potential therefore the particle will be a positively charged one.

Learn more about potential difference,

brainly.com/question/23716417

#SPJ1

3 0
1 year ago
One carpenter builds 1/5 of a house in 3/4 of a day and the other builds 2/5 of a house in the same amount of time. How many hou
AlladinOne [14]

Answer:

4/5 houses

Explanation:

The speed of the first carpenter is:

(1/5 house) / (3/4 day) = 4/15 house/day

The speed of the second carpenter is:

(2/5 house) / (3/4 day) = 8/15 house/day

Together, their combined speed is:

4/15 house/day + 8/15 house/day = 12/15 house/day

= 4/5 house/day

Per day, the two carpenters build 4/5 of a house.

4 0
3 years ago
What's the main term used to locate in the alphabetic index for acute perforated gastrojejunal ulcer
nasty-shy [4]

Answer:

the main term used to locate in the alphabetic index for acute perforated gastrojejunal ulcer is ULCER

Explanation:

because the main is a term identifying disease conditions or injuries

8 0
3 years ago
If an object falls far enough, it will reach terminal velocity. At this velocity, the force of air
love history [14]

Answer:

The object will contine to fall, but at a constant velocity.  There will be no more acceleration.

Explanation:  When the force of gravity is equal to the reverse force of air resistance, there will will be no net force on the falling obect.  F = ma, and F (net) = 0.  It will continue at the same speed until those forces become imbalanced again (such as when the force pushing up from the ground is greater than the force of gravity pulling it down).  The metric term for this sudden resistance is "crash/bang/clunk/yieouch."

3 0
3 years ago
The Bohr model of the atom suggest that the protons and neutrons are found in the nucleus and the electrons orbit the nucleus mu
Tanzania [10]

Answer:

I think it is D

Explanation:

the Bohr model says that electrons whizz around the atomic nucleus in the same way that the earth goes around the sun - but rather than being bound by gravity, it is bound by electromagnetic forces.

8 0
4 years ago
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