Design an experiment to test the water temperature increases the solubility in water also increses

A super train is moving along a track at a speed close to the speed of light. you are watching the train from the ground. you ob

ryzh [129]

The people in the train will say that it super fast, because the speed of light is about 186,411 mile / s, so a mile will only took 0.0000054 s to travel it. so it is super fast and i think the people boarding the train might suffer physically due to intensity of the force applied to their body

7 0

3 years ago

Ask Your Teacher A coil is formed by winding 260 turns of insulated 16 gauge copper wire (diameter = 1.3 mm) in a single layer o

Liula [17]

Answer:

The resistance is $2.98$ Ω

Explanation:

<u>Data</u>

diameter: $d=1.3mm$ , $d=1.3*10^{-3} m$

Radius: $r=\frac{d}{2} ,r=\frac{1.3*10^{-3} }{2} ,r=6.5*10^{-4} m$

Resistivity constant: $p=1.65*10^{-8}$ Ω $m$

To find Area:

$A=\pi r^{2} \\A=\frac{22}{7} *(6.5*10^{-4} )\\A=1.33*10^{-6} m^{2}$

To find circumference:

$l=260*(2\pi (0.15))\\l=245.04m$

Now we can apply the Resistivity formula:

$R=p\frac{l}{A}$

$R=(1.65*10^{-8} )$ Ω $m*\frac{240.04m}{1.33*10^{-6}m^{2} }$

$R=2.98$ Ω

4 0

4 years ago

Explain what the Nebular Hypothesis states

inn [45]

Its the most widely accepted model in the field of cosmogony to explain the formation and evolution of the Solar System.

5 0

4 years ago

A ray of light is moving from a material having a high index of refraction into a material with a lower index of refraction.(a)

Sveta_85 [38]

(a) Away from the normal

The direction of bending of the ray of light can be found by using Snell's law:

$n_1 sin \theta_1 = n_2 sin \theta_2$

where

n1, n2 are the index of refraction of the first and second medium, respectively

$\theta_1, \theta_2$ are the angle of the incident and refracted ray with respect to the normal to the surface, respectively

In this problem, the ray of light moves from a material with high index of refraction to a material with lower index, so:

$n_1 > n_2$

Re-arranging Snell's law we find

$sin \theta_2 = \frac{n_1}{n_2} sin \theta$

since

$\frac{n_1}{n_2}>1$

we also have

$sin \theta_2 > sin \theta_1\\\theta_2 > \theta_1$

so the ray of light bends away from the normal.

(b) The wavelength is greater in the second material (the one with lower index of refraction)

The wavelength of the light in a medium is given by

$\lambda=\frac{\lambda_0}{n}$

where

$\lambda_0$ is the wavelength of the light in a vacuum

n is the refractive index

We can rewrite the equation as

$\lambda_0 = \lambda_1 n_1 = \lambda_2 n_2$

And isolating $\lambda_2$ from the second equation

$\lambda_2 = \frac{n_1}{n_2} \lambda_1$

where

$\lambda_1 = 600 nm\\\frac{n_1}{n_2}>1$

So, we have that the wavelength in the second medium (the one with lower index of refraction) is longer than the wavelength in the first medium.

(c) The frequency is the same

While wavelength and speed of a light wave depend on the medium in which the wave is travelling through, the frequency does not depend on that, so it is exactly the same in the two mediums.

5 0

4 years ago

What is the formula for calculating mechanical power

Oksi-84 [34.3K]

Answer:

Because work can be defined as force time distance, we can also use the following equation

Solution

P=power (w or ft-lbf/s)

F=force (N or lbf)

D=distance (m or ft)

T=time (sec)

One horsepower is equivalent to 550 ft-lbf/s and 745.7 watts.

6 0

3 years ago