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2 years ago

PLS HELP FOR PHYSICS

Physics

2 answers:

makvit [3.9K]2 years ago

8 0

Light is a particle and wave

Lorico [155]2 years ago

8 0

Answer:

The answer is the second option, Light is both a particle and a wave.

Explanation:

The first option is incorrect because Light and electrons aren't the same thing, One of the main reasons why is that particles of light which are called photons do not have any mass, while electrons have a negligible mass, but they still have some mass.

Both the third and fourth options are incorrect because Light is both a particle and a wave and they're not mutually exclusive as light behaves like a wave on some experiments and light behaves like a particle in some experiments.

Extra knowledge:

In my opinion, you could almost say that Light is kind of like Schrodinger's cat, if you place a cat inside the radioactive chamber until you open the chamber you would not know that whether the cat is dead or alive, so technically the cat is both dead and alive.

In the same way Light behaves as a wave and a particle and you won't be able to find out which unless you conduct an experiment.

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The process by which metamorphic rock changes to igneous rock begins with?

Strike441 [17]

Melting, as igneous rock is magma or lava that has cooled and hardened.

5 0

2 years ago

An upright object 2.80 cm tall is placed 16.0 cm away from the vertex of a concave mirror with a center of curvature of 24.0 cm.

horrorfan [7]

Answer:

f = 12 cm

Explanation:

Center of Curvature:

The center of that hollow sphere, whose part is the spherical mirror, is known as the ‘Center of Curvature’ of mirror.

The Radius of Curvature:

The radius of that hollow sphere, whose part is the spherical mirror, is known as the ‘Radius of Curvature’ of mirror. It is the distance from pole to the center of curvature.

Focal Length:

The distance between principal focus and pole is called ‘Focal Length’. It is denoted by ‘F’.

The focal length of the spherical (concave) mirror is approximately equal to half of the radius of curvature:

$f = \frac{R}{2}$

where,

f = focal length = ?

R = Radius of curvature = 24 cm

Therefore,

$f = \frac{24\ cm}{2}$

f = 12 cm

8 0

2 years ago

7. What is the velocity of an object that has a mass of 4.5 kilograms and

labwork [276]

Answer:

266.66 m/s

Explanation:

p=mv

1200=4.5v

v=266.66 m/s

7 0

2 years ago

Part 2: Identify the independent, dependent, and constant variables

diamong [38]

ANSWER:

IV, Type of dish detergent. DV, height of foam. CV, type of container, amount of water in container, temperature of water, time the container is agitated.

Explanation:

Independent variable(IV)- what you change during the experiment.
dependent variable(DV)- what you're measuring during an experiment. The dependent variable is DEPENDENT because it's results DEPEND on the independent variable at play.
Constant variables(CV)- things that do not change in order to isolate the tested variables as much as possible.

4 0

2 years ago

Two fishing boats depart a harbor at the same time, one traveling east, the other south. the eastbound boat travels at a speed 3

kaheart [24]

1) Let's call $V_S$ the speed of the southbound boat, and $V_E=V_s+3~mph$ the speed of the eastbound boat, which is 3 mph faster than the southbound boat. We can write the law of motion for the two boats:
$S_E(t)=V_E t=(V_S+3)t$
$S_S(t)=V_S t$

2) After a time $t=3~h$ , the two boats are $45~mi$ apart. Using the laws of motion written at step 1, we can write the distance the two boats covered:
$S_E(3~h)=3(V_S+3)=3V_S+9$
$S_S(3~h)=3V_S$
The two boats travelled in perpendicular directions. Therefore, we can imagine the distance between them (45 mi) being the hypotenuse of a triangle, of which $S_E$ and $S_S$ are the two sides. Therefore, we can use Pythagorean theorem and write:
$45= \sqrt{(3V_S)^2+(3V_S+9)^2}$
Solving this, we find two solutions. Discarding the negative solution, we have $V_S=9~mph$ , which is the speed of the southbound boat.

4 0

2 years ago