Ask question

Ask question

All categories

3 years ago

12

I stand 0.72 meters in front of a mirror and look at the person on the other side who looks like me. That person is actually you

nger than me by a small amount. How much?

1 answer:

Sergeu [11.5K]3 years ago

4 0

Answer:

Younger by nanoseconds

Explanation:

Not entirely sure :O

You might be interested in

A laboratory dish, 20 cm in diameter, is half filled with water. One at a time, 0.50/µL drops of oil from a micropipette are dro

aleksklad [387]

Answer:

n = 1.45

Explanation:

Given:

- Diameter of the dish d = 0.2 m

- Volume per drop V/drop = 0.5 uL

- wavelength of incident light λ = 600 nm

- minimum intensity @ 13 drops

- refractive index of oil : n

Find:

What is the index of refraction of the oil?

Solution:

- Destructive interference can be seen @ 13 drops. So we will use the relation of destructive interference:

n = m*λ / 2*t

- Compute the thickness of the film.

Volume of film = 0.5*13*10^-9 = 6.5*10^-9 m^3

Volume of cylinder = pi*d^2 / 4 * t

pi*d^2 / 4 * t = 6.5*10^-9 m^3

t = 4*(6.5*10^-9 )/ pi*0.2^2 = 2.069*10^-7 m

- Use the given relation @ m = 1:

n = λ / 2*t

n = (600*10^-9) / 2*2.069*10^-7

n = 1.45

3 0

4 years ago

How much current will be flowing through a 40.0 m length of cylindrical metal wire with radius 4.0 mm if it is connected to a so

Degger [83]

Answer:

Current, I = 1200 A

Explanation:

It is given that,

Length of the cylinder, l = 40 m

Radius of the metal wire, r = 4 mm = 0.004 m

Voltage source, V = 16 V

Resistivity of metal, $\rho=1.68\times 10^{-8}\ \Omega-m$

We know that the resistivity of any metal is given by the formula as :

$R=\rho \dfrac{l}{A}$

$R=1.68\times 10^{-8}\times \dfrac{40}{\pi (0.004)^2}$

R = 0.01336 ohms

Using ohm's law :

$R=\dfrac{V}{I}$

$I=\dfrac{V}{R}$

$I=\dfrac{16}{0.01336}$

I = 1197.60 A

or

I = 1200 A

So, the current flowing in the cylindrical wire is 1200 A. Hence, this is the required solution.

6 0

3 years ago

The total sum of atoms in an object.

Darina [25.2K]

Answer:

Mass

Explanation:

The total sum of atoms in an object is the mass of the object. There are several ways to quantify the number of atoms in a substance.

In chemical calculations, the number of moles is a good representation of the number of atoms contained in a body.
Mass is the amount of substances a body has.
If we can sum up all the atoms in a substance, one will arrive at the mass of the substance

4 0

3 years ago

Two concentric current loops lie in the same plane. The outer loop has twice the diameter of the inner loop. The inner loop carr

Flauer [41]

Answer: The outer loop should carry a current of 2.0 A.

The current should flow in the counter-clockwise direction

Explanation: Please see the attachments below

7 0

3 years ago

Based on Schaffer's arguments in "The Value of a Sherpa Life," choose the statement

Tju [1.3M]

Answer:

Sherpas do work that is much more meaningful than the work other climbers do.

Explanation:

3 0

3 years ago