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hammer [34]
3 years ago
15

What's Quantum Mechanics?​

Physics
2 answers:
Nonamiya [84]3 years ago
8 0

Answer:

Explanation:

Quantum Mechanics is a branch of physics that deals with sub-atomic particles and their energy states. Its theory says at subatomic level, energy exists in discrete levels as "quanta" and particles behave as waves.

harkovskaia [24]3 years ago
6 0

Answer:

The branch of mechanics deals with the mathematical description of the motion and interaction of subatomic particles, incorporating the concepts of quantization of energy, wave–particle duality, the uncertainty principle, and the correspondence principle is Quantum Mechanics.

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How do the gravitational potential energy and the kinetic energy of the ball change as the ball rolls down the ramp?
belka [17]

Explanation:

The gravitational potential energy is given by :

P = mgh

The kinetic energy of an object is given by :

K=\dfrac{1}{2}mv^2

As the ball reaches the bottom of the ramp, its potential energy decreases and kinetic energy increases.

It imply that, when the ball at the top most height, its gravitational potential energy is maximum and zero kinetic energy and when ball reaches the bottom of the ramp, it will have maximum kinetic energy and zero potential energy.

3 0
3 years ago
A ball is Thrown Upward with An initial velocity of 30 m/s , How high does it rise from the ground when the ball reaches the hig
kobusy [5.1K]

Answer:

  • The maximum height reached by the ball is 45.92 m
  • Time taken to fall down to half of its height is 2.2 s

Explanation:

Given;

initial velocity of the ball, u = 30 m/s

final velocity of the ball at the highest point, v = 0

The maximum height reached by the ball is calculated as;

v² = u² - 2gh

where;

h is the maximum height reached by the ball

0 = 30² - (2 x 9.8)h

19.6h = 900

h = 900 / 19.6

h = 45.92 m

Time taken to fall to half of its height is calculated as;

when falling down, the final velocity v becomes the initial velocity = 0.

Apply the following kinematic equation;

h = ut + ¹/₂gt²

h = 0 + ¹/₂gt²

h = ¹/₂gt²

where;

h = 45.92 m is the maximum height reached

half of h = 45.92 / 2 = 22.96 m

22.96 = ¹/₂gt²

t = \sqrt{\frac{2h}{g} } \\\\t = \sqrt{\frac{2\times 22.96}{9.8} }\\\\t = 2.2 \ s

3 0
3 years ago
What are 5 examples of pseudoscience that can be found on the Internet?
mel-nik [20]

-- flat Earth
-- no moon landings
-- no gravity
-- chem trails
-- astrology

7 0
3 years ago
Fill in the blank. When the northern hemisphere experiences autumn, the southern hemisphere experiences __________.
Helga [31]

Answer:

When the northern hemisphere experiences autumn, the southern hemisphere experiences <u><em>spring</em></u>

Explanation:

When the northern hemisphere experiences autumn, the southern hemisphere experiences <u><em>spring</em></u>

This is due to the equinoxes.  An equinox is an event that occurs twice a year. During these seasons all areas of the Earth's surface experience an equal amount of daylight and darkness. The sun is on the equator line, so the day and night in both hemispheres have the same duration. At that time the part of the Earth closest to the Sun is the equator.

The shape of the Earth means that while the spring equinox is experienced in the northern hemisphere, the autumn equinox is entered in the southern hemisphere.

8 0
4 years ago
Read 2 more answers
Changes in color and temperature indicate that a ________ reaction has taken place. chemical physical
bearhunter [10]

Answer:

Chemical reaction.

Explanation:

Changes in color and temperature indicates a chemical reaction has taken place.

A chemical reaction involves two species combining to give a product. They are usually a product of chemical changes between two combining species.

In a chemical change;

  • New kinds of products are formed
  • There are heat changes accompanying such reactions.
  • We can have color changes but it is not all indicative.

8 0
3 years ago
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