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4 years ago

Which of the following statements is true about the nature of light?

Physics

1 answer:

lukranit [14]4 years ago

4 0

Light shows duality i.e it shows properties of both particle as well as wave.

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Sea and land breezes over a large region that change direction with the seasons are called_____________.

Nataliya [291]

Monsoon. Sea and land breezes over a large region that change direction with the seasons are called. Global winds.

8 0

3 years ago

A particle moves with acceleration function a(t) = 5 + 4t - 2t^2. Its initial velocity v(0) = 3 m/s and its initial displacement

eimsori [14]

Answer:

Its position after 4 seconds is 62 meters.

Explanation:

It is given that,

The acceleration of the particle is given by equation :

$a(t)=5+4t-2t^2$

Also, $a=\dfrac{dv}{dt}$

$v=\int\limits {a.dt}$

$v=\int\limits {(5+4t-2t^2).dt}$

$v=5t+2t^2-\dfrac{2}{3}t^3+c$

At t = 0, $v(0)=3\ m/s$ . So, c = 3

$v=5t+2t^2-\dfrac{2}{3}t^3+3$

Also, $v=\dfrac{ds}{dt}$ , s is the position

$s=\int\limits {v.dt}$

$s=\int\limits {(5t+2t^2-\dfrac{2}{3}t^3+3).dt}$

$s=\dfrac{5}{2}t^2+\dfrac{2}{3}t^3-\dfrac{t^4}{6}+3t+c'$

At t = 0, $s(0)=10\ m$ . So, c' = 10

$s=\dfrac{5}{2}t^2+\dfrac{2}{3}t^3-\dfrac{t^4}{6}+3t+10$

At t = 4 s

$s=\dfrac{5}{2}(4)^2+\dfrac{2}{3}(4)^3-\dfrac{(4)^4}{6}+3(4)+10$

s = 62 m

So, at t = 4 seconds the position of the particle is 62 meters. Hence, this is the required solution.

5 0

3 years ago

Imagine two people , each seating on an office chair with wheels. One pushes against the other Describe what happen next Explain

zaharov [31]

Answer:

The two chairs and those sitting on them will move in nearly opposite directions at almost the same speed (assuming that the wheels can only move into two directions - front or back and assuming that the weight of both people are almost the same)

Explanation:

Newton's Third Law states that If an object X exerts a force on object Y, then object Y must exert a force of equal magnitude and opposite direction back on object X.

In other words, when force is applied from source A at B and in direction of B, B also simultaneously returns the force on B and in the direction of B.

This law applies when we jump off the ground when a rocket takes off from the earth into space, etc.

While standing, the body pushes on the earth with a force equal to its own weight. If the ground underneath the body does not meet that force in an equal and opposite direction, both standing on the earth will fall into the earth, with the earth caving underneath it.

You can see why it is important to have a strong foundation for a building and why the depth and strength of the foundation will depend on how much weight is going on it.

Cheers!

3 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

Determine the internal resistance of the capacitor.

11Alexandr11 [23.1K]

Answer:

The equivalent series resistance of a capacitor is the internal resistance that appears in series with the capacitance of the device. Almost all capacitors exhibit this property at varying degrees depending on the construction, dielectric materials, quality, and reliability of the capacitor.

Explanation:

Hope this helps

7 0

2 years ago