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4 years ago

Match the change of state of matter to the term:

Physics

2 answers:

Sphinxa [80]4 years ago

6 0

Sup Milk,

Sublimation = Energy is absorbed and a solid turns to a gas.

Condensation = Energy is released and a gas changes to a liquid.

Evaporation = Energy is absorbed into a liquid to turn it into a gas.

Alik [6]4 years ago

5 0

<u>Answer:</u>

(i) Energy is absorbed into a liquid to turn it into a gas is called as evaporation. For example. consider water where heating to its boiling point will turn the liquid into vapor known as evaporation.

(ii) Energy is absorbed and a solid is turned into a gas is called sublimation.

(iii) Energy is released and a gas changes to a liquid is called condensation which is the reverse process of evaporation.

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If 745-nm and 660-nm light passes through two slits 0.54 mm apart, how far apart are the second-order fringes for these two wave

kotegsom [21]

Answer:

0.82 mm

Explanation:

The formula for calculation an $n^{th}$ bright fringe from the central maxima is given as:

$y_n=\frac{n \lambda D}{d}$

so for the distance of the second-order fringe when wavelength $\lambda_1$ = 745-nm can be calculated as:

$y_2 = \frac{n \lambda_1 D}{d}$

where;

n = 2

$\lambda_1$ = 745-nm

D = 1.0 m

d = 0.54 mm

substituting the parameters in the above equation; we have:

$y_2 = \frac{2(745nm*\frac{10^{-9m}}{1.0nm}(1.0m) }{0.54 (\frac{10^{-3m}} {1.0mm})}$

$y_2$ = 0.00276 m

$y_2$ = 2.76 × 10 ⁻³ m

The distance of the second order fringe when the wavelength $\lambda_2$ = 660-nm is as follows:

$y^'}_2 = \frac{2(660nm*\frac{10^{-9m}}{1.0nm}(1.0m) }{0.54 (\frac{10^{-3m}} {1.0mm})}$

$y^'}_2$ = 1.94 × 10 ⁻³ m

So, the distance apart the two fringe can now be calculated as:

$\delta y = y_2-y^{'}_2$

$\delta y$ = 2.76 × 10 ⁻³ m - 1.94 × 10 ⁻³ m

$\delta y$ = 10 ⁻³ (2.76 - 1.94)

$\delta y$ = 10 ⁻³ (0.82)

$\delta y$ = 0.82 × 10 ⁻³ m

$\delta y$ = 0.82 × 10 ⁻³ m $(\frac{1.0mm}{10^{-3}m} )$

$\delta y$ = 0.82 mm

Thus, the distance apart the second-order fringes for these two wavelengths = 0.82 mm

6 0

3 years ago

A circular loop of wire with a radius of 15.0cm and oriented in the horizontal xy-plane is located in a region of uniform magnet

Drupady [299]

Answer:

See answer

Explanation:

The area of the circular loop is given by:

$A = \pi r^2$

The magnetic flux is given by:

$\phi = \int \vec{B} \cdot d\vec{A}$

$d\vec{A}$ is parallel to $\vec{B}$ and $\vec{B}$ is constant in magnitude and direction therefore:

$\phi = \int \vec{B} \cdot d\vec{A}= \int BdAcos(0)= B\int dA= B*(\pi r^2)= \pi Br^2$

Part A)

initially the flux is $\phi =\pi B r^2$

after the interval $\Delta t= 2.4 [m/s]$

the flux is

$\phi = 0$

now, the EMF is defined as:

$\epsilon =- \frac{d \phi}{dt}$ ,

if we consider $\Delta t= 2.4 [m/s]$ very small then we can re-write it as:

$\epsilon =- \frac{\Delta \phi}{\Delta t}$

$\Delta \phi = 0 - \pi B r^2=-\pi (1.7) (0.15)^2=-0.12$

then:

$\epsilon =- \frac{-0.12}{0.0024} = 50 [V]$

Part B)

When looked down from above, the current flows counter clockwise, according to the right hand rule, if you place your thumb upwards (the direction of the magnetic field) and close your fingers, then the current will flow in the direction of your fingers.

3 0

3 years ago

Does the under water pressure depend on the molecules of the air or what does it depend on

miskamm [114]

Answer:the pressure depends on gas and it will be half as much underwater

Explanation:

Water pressure increases with the depth of the water. This is because the weight of the column of water above the object increases. But a large, shallow pond may have more water in it than a small, deep pond.

This is due to an increase in hydrostatic pressure, the force per unit area exerted by a liquid on an object. The deeper you go under the sea, the greater the pressure of the water pushing down on you. For every 33 feet (10.06 meters) you go down, the pressure increases by one atmosphere .

4 0

3 years ago

Boiling point (when a liquid change to gas) is a physical property of matter. I want to determine if the amount of water will ha

Tanzania [10]

Answer:

Explanation:

They will boil at the same temperature.

And remember Christ loves you and

Jesus is coming back soon get right with Christ please

4 0

3 years ago

A soccer ball is kicked 8 m north. Then a teammate kicks it 6 m east into the goal. What is the soccer ball’s displacement from

dimulka [17.4K]

Answer:

the displacement is zero and the distance is 100 meters

Explanation:

7 0

3 years ago