A baseline for an experimental investigation is provided by the

vazorg [7]

Answer:

1. A solid can diffuse into a liquid, but a solid cannot diffuse into another solid.

3. A liquid can diffuse into another liquid.

4. A gas can diffuse into another gas.

Explanation:

When an object is in liquid or gas form, they can easily move and spread. This is because the molecules are packed loosely. Since they can move freely, diffusion on and into gas/liquid can be easily achieved.

Solid form can diffuse into liquid too. Seawater is mostly made of water and solid salt. But diffusing a solid into a solid is not possible since the molecule is tightly packed and barely moves. The diffusion might be happening, but at a really slow rate that we can assume it is not.

4 0

4 years ago

What is the rotational inertia of an object that rolls without slipping down a 2.00-m-high incline starting from rest, and has a

krek1111 [17]

We will apply the concepts of energy conservation to solve the problem. We know that gravitational potential energy is equivalent to the sum of translational kinetic energy and rotational kinetic energy. Additionally, the relation of the angular velocity with the tangential velocity will be determined to eliminate the angular term and obtain the expression of the Inertia in terms of the data given, therefore, we know that

$PE_{g} = KE_{trans} +KE_{rot}$

$mgh = \frac{1}{2} mv^2+\frac{1}{2}I\omega^2$

The angular velocity in terms of tangential velocity and radius is defined as,

$\omega = \frac{v}{R}$

Replacing,

$mgh = \frac{1}{2} mv^2+\frac{1}{2} I(\frac{v}{R})^2$

Multiplying by R^2,

$gh(mR^2) = \frac{v^2}{2} (mR^2)+\frac{v^2}{2}I$

$\frac{v^2}{2}I = (gh-\frac{v^2}{2})mR^2$

$I = (\frac{2gh}{v^2}-1)mR^2$

Replacing with our values we have,

$I = (\frac{2(9.8)(2)}{6^2}-1)mR^2$

$I = 0.089mR^2$

6 0

3 years ago

What is the magnetic field amplitude of an electromagnetic wave whose electric field amplitude is 10v/m?

Nitella [24]

Answer:

$3.33\cdot 10^{-8} T$

Explanation:

For an electromagnetic wave, the relationship between magnetic field amplitude and electric field amplitude is given by

$E=cB$

where

E is the amplitude of the electric field

c is the speed of light

B is the amplitude of the magnetic field

For the electromagnetic wave in this problem, we have

E = 10 V/m is the amplitude of the electric field

So if we solve the formula for B, we find the amplitude of the magnetic field:

$B=\frac{E}{c}=\frac{10 V/m}{3\cdot 10^8 m/s}=3.33\cdot 10^{-8} T$

4 0

3 years ago

Why do opaque materials become warmer when light shines on them?

gavmur [86]

Opaque materials absorb all the light that shines on them. None of it comes out the other side. That's why they're opaque.

Opaque materials become warmer when light shines on them, because <em>they absorb the energy</em> carried by the light that shines on them. (According to the law of Conservation of Energy, that energy has gotta go somewhere.)

6 0

3 years ago

Which of the following colors is not a primary color of light

IRINA_888 [86]

The colors red, blue and yellow

4 0

3 years ago

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