All electromagnetic radiation is visible to the human eye. Please select the best answer from the choices provideda. True
b. False

Answers

Answer 1

Answer:

The correct answer is

b. False

It's actually the opposite: only a very small part of the electromagnetic spectrum is visible to human eye.

The electromagnetic spectrum consists of a huge range of wavelengths, spanning from gamma rays (with very short wavelength, at the order of 1 pm) to radio waves (with very long wavelength, at the order of kilometers). The only portion of this spectrum visible to the human eye is the "visible light", which has wavelengths between 400 and 700 nanometers approximately.

Answer 2

Answer:

The statement is False. All the electromagnetic radiations are not visible to the human eyes.

Explanation:

The waves are defined as the disturbance produced in the medium particles. The wave is basically the physical phenomena that occurs in a medium and it is characterized by the amplitude, wavelength and the frequency of oscillating particles.

The waves are basically characterized as the transverse and the longitudinal based on the direction of oscillation. The transverse waves are the one in which the direction of oscillation is perpendicular to the propagation whereas in longitudinal waves, the direction of oscillation is along the motion of the wave.

The electromagnetic waves are the transverse waves that are formed by the perpendicular magnetic and electric field present in the medium. The complete electromagnetic spectrum is not considered to be in the visible range for the human eye. Only a small part lying in the wavelength of $4000-7000\,\AA$ .

Thus, The statement is False. All the electromagnetic radiations are not visible to the human eyes.

Learn More:

1. Similarities between transverse and longitudinal waves brainly.com/question/3293068

2. A property is a characteristic of a substance that can be observed and does not change the identity of the substance brainly.com/question/859623

3. The amount of kinetic energy an object has depends on its brainly.com/question/137098

Answer Details:

Grade: High School

Subject: Physics

Chapter: Waves

Keywords:

electromagnetic radiation, human eye, visible, transverse, longitudinal, waves, wavelength, particles, perpendicular.

Related Questions

The height of a wave from the equilibrium is 1 meter. Which parameter of the wave does this distance represent
What is an example of Deceleration?
Air is warmed and moisten as it moves through both the mouth and nasal passages.a. Trueb. False
What is the equation for calculating electric power?
A 1600N force is applied to a 85kg mass what is the acceleration of the mass?

________ found that electric and magnetic energy move in waves.

Answers

James Clerk Maxwell is the answer

Driving home from school one day, you spot a ball rolling out into the street (Figure 5-21). You brake for 1.20 s, slowing your 950-kg car from 16.0 m/s to 9.50 m/s.a) What was the average force exerted on your car during braking?
b) How far did you travel while braking?

Answers

a ) v = v o + a t ( the acceleration will be negative )
9.50 = 16.0 + a * 1.2
a * 1.2 = -16.0 + 9.50
a * 1.2 = - 6.5
a = - 6.5 : 1.2
a = - 5.4167 m/s²
F = m * a = 950 kg * 5.4167 m/s²
F = 5,145.8 N ( the average force exerted on a car during braking )
b ) d = v o - a t² / 2
d = 16.0 * 1.2 - ( 5.4167 * 1.2² / 2 ) =
= 19.20 - 3.90 = 15.30 m

. If the centripetal and thus frictional force between the tires and the roadbed of a car moving in a circularpath were reduced, what would happen?

Answers

In this particular case, where car is moving through curvature, so it is moving in circular motion, force acting on car is centripetal force which holds car not to fly out. Centripetal force is always pointed in the middle of circle. Here frictional force has role of centripetal force. If frictional force is to weak, car would fly out of curvutare.

The phase change in which a substance changes from a gas directly to a solid isA. condensation.
B. vaporization.
C. deposition.
D. sublimation.

Answers

Condensation is the change ofthe substance from liquid to solid phase. Example of this is the formation ofice. Vaporization is the change of substance from liquid to gas phase. Example ofthis is the boiling of water. Deposition is the change of a substance from gasto solid phase. Example of this is the formation of ice on a winter day. Sublimationis the change of a substance from solid to gas phase. Example of this is dryice. The answer is letter C.

Answer: Properties and States of Matter Practice

1. Which of the following are pure substances? Compounds

2. A substance that cannot be broken into similar substances is called a(n)... Element

3. When a physical change in a sample occurs, which of the following does NOT change? Composition

4. Which of the following will cause a decrease in gas pressure in a closed container? Lowering the temperature

5. The heat of fusion for water is the amount of energy needed for water to... Melt

6. The phase change in which a substance changes from a gas directly to a solid is... Deposition

7. Which of the following phase changes is an exothermic change? sublimation

8. Which of the following has the highest viscosity? Corn Syrup

9. In which of the substances in the figure below are the forces of attraction among the particles so weak that they can be ignored under ordinary conditions? It is the one where the particles are more apart.

Explanation:

A stack of books is sitting on a table. Which force is pulling downward on it?

Answers

Gravity is the force pulling downward.

A 1.00 l sample of a gas at 25.0◦c and 1.00 atm contains 50.0 % helium and 50.0 % neon by mass. what is the partial pressure of the neon. express your answer in atmospheres.

Answers

V = Volume of sample of gas = 1.00 L = 0.001 m³

T = temperature of the gas = 25.0 ⁰C = 25 + 273 = 298 K

P = pressure = 1.00 atm = 101325 Pa

n = number of moles of gas

using ideal gas equation

PV = n RT

101325 (0.001) = n (8.314) (298)

n = 0.041

n₁ = number of moles of helium

n₂ = number of moles of neon

m₁ = mass of helium = n₁ (4) = 4 n₁

m₂ = mass of neon = n₂ (20.2) = 20.2 n₂

given that :

m₁ = m₂

4 n₁ = 20.2 n₂

n₁ = 5.05 n₂

also

n₁ + n₂ = n

5.05 n₂ + n₂ = 0.041

n₂ = 0.0068

mole fraction of neon is given as

mole fraction = n₂ /n = 0.0068/0.041 = 0.166

P₂ = partial pressure of neon = (mole fraction) P

P₂ = (0.166) (1)

P₂ = 0.166 atm

The partial pressure of the neon is 0.16 atm.

Explanation:

A 1.00 l sample of a gas at 25.0◦c and 1.00 atm contains 50.0 % helium and 50.0 % neon by mass. what is the partial pressure of the neon. express your answer in atmospheres.

The partial pressure is the notional pressure of constituent gas if it is occupied alone by the entire volume of the original mixture at the same temperature.

50.0 % helium and 50.0 % neon by mass.

$P = 1 atm$