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3 years ago

Which of these statements is false? Question 18 options:

1 answer:

6 0

True because the kind of light we get is white light and everything we see is actually every colour except the color we are seeing because that is wwhat is reflected

You might be interested in

How are active and passive transport different?

sashaice [31]

Passive transport is when molecules travel from HIGHER concentration to LOWER concentration through a concentration gradient.

Active transport is the OPPOSITE. So it travels from LOWER to HIGHER concentration through a concentration gradient.

There are also other differences, but this is the main difference.

8 0

3 years ago

A neutron is confined in a one-demensional potential box of width 5.0 x 10^-15 m. Calculate the minimum kinetic energy of the ne

kvv77 [185]

Answer:

$E_1=1.31\times 10^{-12}\ J$

Explanation:

Given that,

Width of a one dimensional potential box, $x=5\times 10^{-15}\ m$

The energy of a particle in one dimensional box is given by :

$E_n=\dfrac{n^2h^2}{8mx^2}$

h = Planck's constant

m = the mass of the proton

For minimum kinetic energy, n = 1

$E_1=\dfrac{(6.63\times 10^{-34})^2}{8\times 1.67\times 10^{-27}\times (5\times 10^{-15})^2}$

$E_1=1.31\times 10^{-12}\ J$

So, the minimum kinetic energy of the neutron is $1.31\times 10^{-12}\ J$ . Hence, this is the required solution.

8 0

3 years ago

What are the movements of boiling water? I'm looking for if they speed up, like that sort of thing. Not how, not why, just what

fgiga [73]

When a substance is heated, the molecules begin to vibrate faster and the space between molecules increases. So it would be speeding up.

6 0

4 years ago

Calculate the linear momentum per photon,energy per photon, and the energy per mole of photons for radiation of wavelength; (a)

LuckyWell [14K]

Answer:

The detailed explanations is attached below

Explanation:

What is applied is the De brogile equation and the equation showing a relationship between Energy, speed of light and wavelength.

The explanation is as attached below.

8 0

3 years ago

In a double-slit experiment, it is observed that the distance between adjacent maxima on a remote screen is 1.0 cm. What happens

kobusy [5.1K]

Answer:

C) It increases to 2.0 cm

Explanation:

In a double-slit diffraction experiment, the distance on the screen between two adjacent maxima is given by

$\Delta y = \frac{\lambda D}{d}$

where

$\lambda$ is the wavelength of the wave

D is the distance of the screen from the slits

d is the separation between the slits

In this problem, the initial distance between adjacent maxima is 1.0 cm. Later, the slit separation is cut in a half, which means that the new slit separation is

$d'=\frac{d}{2}$

Substituting into the equation, we find that the new separation between the maxima is

$\Delta y' = \frac{\lambda D}{d/2}=2(\frac{\lambda D}{d})=2\Delta y$

So, the distance increases by a factor 2: therefore, the new separation between the maxima will be 2.0 cm.

5 0

3 years ago