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3 years ago

1. Which of the following process is /are evaporation process

1 answer:

4 0

Evaporation process is by which water changes to gas or vapor.
The primary pathway that water moves from liquid state back into the water cycle as atmospheric water vapor.

You might be interested in

What is the relationship between Potential energy and KInetic energy in a system?

steposvetlana [31]

Answer:

A soma dos dois tipos de energia, potencial e cinética, resultam na energia mecânica. Ou seja, ambas compõe a energia mecânica.

8 0

3 years ago

Once a ball leaves a table at 10 m/s, how long will it take to hit the floor

Zarrin [17]

<u>Answer:</u>

The time taken for the ball to hit the floor as 1.02 seconds

<u>Explanation:</u>

As per the given question, the ball leaves at a speed from the table with an initial velocity of 10 m/s, we have the equation

$\mathrm{V}_{\mathrm{f}}=\mathrm{V}_{\mathrm{i}}+\mathrm{at}$

where Vf represents the final velocity

Vi represents the initial velocity

a represents the acceleration and

t represents the time

$\mathrm{V}_{\mathrm{f}}=\mathrm{V}_{\mathrm{i}}+\mathrm{at}$ after rearranging

$\mathrm{t}=\frac{\mathrm{vf}-\mathrm{vi}}{a}$

$\mathrm{t}=\frac{0-10}{9.8}$ = 1.022 seconds

6 0

4 years ago

The diagram below shows a light ray striking Medium A and Medium B at the same angle.

zepelin [54]

Answer: D Medium B is denser than Medium A because light bends more in Medium B.

Explanation: The more the light bends the less energy it has

6 0

3 years ago

Jenny wants to determine if a new brand name washing detergent is better than her old detergent she washed ten dirty t-shirts wi

katovenus [111]

Answer:

Independent variable: washer detergent

Dependent varaible: cleaing power of effectivenes of the detergent.

Explanation:

When an experiiment is performed there exists one independent variable, one dependent variable, and some other variables that must be controlled.

The goal of the experiment is to test a hypothesis, which is a statement that relates an effect with a cause and that must be proved true or false.

The effect in the dependent variable, and the cause is the independent variable.

Jenny (the scientist) wants to show how an effect or phenomenun, the dependent variable, is explained by the explanatory, independent, variable.

In the stated experiment, Jenny wants to know how the effectiveness of a new brand detergent and an old one compare with each other. Therefore, she designs a test in which she will determine how the brand of detergent may explain (explanatory or independent variable) the cleaning power or effectiveness, the dependent variable.

Jenny only can manipulate the independent variable and observe the effect on the dependent variable.

To be conclusive, other variables must be controlled, like the fabric and the amount of dirt of the t-shirts.

4 0

4 years ago

. A circular wire loop 40 cm in diameter has 100 Ohm resistance and lies in a horizontal plane. A uniform magnetic field points

sergeinik [125]

Answer:

(a) 6.283 Wb (b) 69.11 Wb (c) I = 0.628 A

Explanation:

Given that,

The diameter of the loop, d = 40 cm

Radius, r = 20 cm

Initial magnetic field, B = 5 mT

Final magnetic field, B' = 55 mT

Initial magnetic flux,

$\phi_i=BA\\\\=5\times 10^{-3}\times \pi \times 20^2\\\\=6.283\ Wb$

Final magnetic flux,

$\phi_f=B'A\\\\=55\times 10^{-3}\times \pi \times 20^2\\\\=69.11\ Wb$

Due to change in magnetic field an emf will be generated in the loop. It is given by :

$\epsilon=-\dfrac{d\phi}{dt}\\\\=\phi_f-\phi_i\\\\=69.11-6.283\\\\=62.827\ V$

Let I be the current in the loop. We can find it using Ohm's law such that,

$\epsilon=IR\\\\I=\dfrac{\epsilon}{R}\\\\I=\dfrac{62.827}{100}\\\\=0.628\ A$

Hence, this is the required solution.

7 0

3 years ago