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4 years ago

Which example most effectively illustrates the dual nature of light?

Physics

1 answer:

bonufazy [111]4 years ago

3 0

Answer:

A. cameras that use photographic film

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Three people bought copper items, and they each relied on different properties of copper. Bernie bought a set of dishes that inc

Luden [163]

The answer is A.

Copper is conductive hence Bernie could use the copper bowl to easily warm his food.

Copper is ductile hence Nicholas can easily bend his copper wire gauge

Copper is malleable hence can be easily shaped into a form hence used to make a bracelet for Matt’s mother.

3 0

3 years ago

Read 2 more answers

Is the following research description experimental, descriptive, or applied?

Bingel [31]

Answer:

It is experimental. She will testing or investigating on children. So yeah, it is experimental

7 0

3 years ago

An object is 16.0cm to the left of a lens. The lens forms an image 36.0cm to the right of the lens. a) What is the focal length

PSYCHO15rus [73]

Answer:

-2.25

Real and inverted image

Explanation:

u = Object distance = 16 cm

v = Image distance = 36 cm

f = Focal length

Lens Equation

$\frac{1}{f}=\frac{1}{u}+\frac{1}{v}\\\Rightarrow \frac{1}{f}=\frac{1}{16}+\frac{1}{36}\\\Rightarrow \frac{1}{f}=\frac{13}{144}\\\Rightarrow f=\frac{144}{13}=11.07\ cm$

Focal length of the lens is 11.07 cm. Positive value indicates the lens is a convex lens

Magnification

$m=-\frac{v}{u}\\\Rightarrow m=-\frac{36}{16}\\\Rightarrow m=-2.25$

Since magnification is negative the image inverted

3 0

3 years ago

What happens when one force acts on an object?

Pachacha [2.7K]

Answer:

if the weight of the object is equal to the force applied, there will be no change

if the force applied is less than the weight of the object, there won't be any change

if the force application ed is greater than the weight of the object, than the object will move.

Explanation:

here the weight referred to the force of the object.

5 0

3 years ago

In a shipping yard, a crane operator attaches a cable to a 1,400 kg shipping container and then uses the crane to lift the conta

Molodets [167]

Answer:

Explanation:

Given

mass of crane $m=1400\ kg$

distance moved $d=40\ m$

Since it is moving with a constant velocity therefore net force on it is zero

Tension force=weight

T=mg

Work done by Tension T is

$W_T=T\cdot d$

$W_T=1400\times 9.8\cdot 40$

$W_T=548.8\ KJ$

Work done by Gravity will be equal in magnitude but opposite in sign and can be obtained by work energy theorem which states that change in kinetic energy of object is equal to work done by all the forces

$W_T+W_g=0$

$W_g=-548.8\ KJ$

4 0

3 years ago