Evaporation only occurs at the surface of a liquid

Answers

Answer 1

Answer:

yes

evaporation starts on the surface

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Which of the following terms describes the motion of particles during the transmission of wave energy?non-recurrent
arbitrary
periodic
unpredictable

Answers

The term that describes a wave energy from the choice is periodic. Wave energy occurs at intervals thus periodic. The main properties of a wave energy are the amplitude, wavelength, frequency and speed. Also, period is a property where it is defined as the time it takes for one complete wave to pass a certain point.

Answer:

periodic

Explanation:

If the velocity of a body changes from 13 m/s to 30 m/s while undergoing constant acceleration, what's the average velocity of the body? A. 28 m/s
B. 17 m/s
C. 21.5 m/s
D. 19.5 m/s

Answers

Since the acceleration is constant, the average velocity is simply the average of the initial and final velocities of the body:

$v_(avg) = (v_f+v_i)/(2)=(30 m/s+13 m/s)/(2)=21.5 m/s$

We can proof that the distance covered by the body moving at constant average velocity $v_(avg)$ is equal to the distance covered by the body moving at constant acceleration a:

- body moving at constant velocity $v_(avg)$ : distance is given by

$S=v_(avg)t = (v_f+v_i)/(2)t$

- body moving at constant acceleration $a=(v_f-v_i)/(t)$ : distance is given by

$S=v_i t+ (1)/(2)at^2 = v_i t + (1)/(2)(v_f-v_i)/(t)t^2=(v_i+(1)/(2)(v_f-v_i))t=(v_f+v_i)/(2)t$

The answer is 21.5 m/s

What is the rate at which electrical energy is converted to another form of energy called ?

Answers

the rate is called power and its unit is voltage

Final answer:

The rate at which electrical energy is converted to another form of energy is called power.

Explanation:

In an electric circuit, electrical energy is continuously converted into other forms of energy. For example, when a current flows in a conductor, electrical energy is converted into thermal energy within the conductor. This process is called power. Power is the rate at which energy is transferred or work is done, and is measured in watts.

Learn more about Power here:

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A grasshopper jumps and accelerates at 4.5 m/s2. If its legs exert a force of 0.062 N during the jump, what is the mass of the grasshopper?

Answers

Answer:

0.014 kg

Explanation:

trust me its right i took the assessment and got 100%. :)

Give two examples of workplace environments where considerations must be made with respect to the possibility of electric discharges. Explain why this is a necessary concern

Answers

Answer:

1.) Oil and gas environment

2.) Mechanical engineering and electrical environment.

Explanation:

1.) Oil and gas environment.

Electricity and electric discharge are recognized as serious workplace hazard in oil and gas companies, exposing employees to burns, fires, and explosions.

2.) Mechanical engineering and electrical environment.

Electricity or electric discharge has long been recognized as a serious workplace hazard, exposing employees to electric shock, electrocution, burns, fires, and explosions. Workers could die from electrocutions at work. This is

accounting for on-the-job fatalities and what makes these more tragic is that most of these fatalities could have been easily avoided.

Secondary evidence is the basis for drawing scientific conclusions.
a. True
b. False

Answers

The answer is false! Hope that helps! :)

The answer would be, B-False

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