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3 years ago

A form of energy that exhibits wave behavior as it travels through space is

Physics

1 answer:

myrzilka [38]3 years ago

4 0

Answer:

Electromagnetic Radiation

Explanation:

Electromagnetic radiation is formed by the combination of electric and magnetic fields, which propagate through space in the form of energy-carrying waves.

Electromagnetic waves have vibrations perpendicular to the direction of wave propagation. For this reason, they are classified among the transverse waves.

Electromagnetic waves travel through space, and do not need a material medium to propagate.

Main types of electromagnetic radiation.

Gamma rays: More energetic radiation. It has the highest frequency (and therefore, the shortest wavelength). They constitute a form of radioactivity.

X-rays: Radiation of less energy than gamma rays. It is used in medical examinations and in the study of metals.

Ultraviolet (UV) rays: Radiation of less energy than X-rays. It comes mainly from the sun.

Visible radiation: Radiation of lower energy than ultraviolet rays. Collect the range of frequencies that can be perceived with the view, from red to violet.

Infrared rays (IR): Radiation of less energy than visible radiation. It is emitted by hot bodies.

Microwave: Radiation of less energy than infrared. It is used in appliances and medical therapy.

TV and radio waves: Less energetic radiation. They are used in telecommunications

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3. A force of 90N pushes downward at an angle of 32° to the horizontal on an object resting on the floor. The

Nonamiya [84]

F = m × g

Now when, a force acts on the object at an angle and in downwards, thus formula becomes:

= N = mg + F sin(x)

Here,

N = normal force, m = mass , g = acceleration due to gravity, F = outside force, x = the angle formed

See, as we habe to calculate the weight, which is m × g, thus we will recreate thus formula like thus:

= N = w + F sin(x) --------- [Weight = w]

Now, the solutions becomes easy from here, just put the values:

= N = w + F sin(x)

= 200 = w + 90 × sin(32)

= 200 = w + 90 × 0.55

= 200 = w + 49.5

= 200 - 49.5 = w

= 150.5 = w

I have got my answer but in approx, hope you will not mind. ^^"

8 0

3 years ago

Consider a heat engine that inputs 10 kJ of heat and outputs 5 kJ of work. What are the signs on the total heat transfer and tot

Oksi-84 [34.3K]

Answer:

Total heat transfer is positive

Total work transfer is positive

Explanation:

The first law of thermodynamics states that when a system interacts with its surrounding, the amount of energy gained by the system must be equal to the amount of energy lost by the surrounding. In a closed system, exchange of energy with the surrounding can be done through heat and work transfer.

Heat transfer to a system is positive and that transferred from the system is negative.

Also, work done by a system is positive while the work done on the system is negative.

Therefore, from the question, since the heat engine inputs 10kJ of heat, then heat is being transferred to the system. Hence, the sign of the total heat transfer is positive (+ve)

Also, since the heat engine outputs 5kJ of work, it implies that work is being done by the system. Hence the sign of the total work transfer is also positive (+ve).

5 0

3 years ago

In a large chemical factory, a feed pipe carries a liquid at a speed of 5.5 m/s. A pump pushes the liquid along at a gauge press

GalinKa [24]

Answer:

v₂ = 15.24 m / s

Explanation:

This is an exercise in fluid mechanics

Let's write Bernoulli's equation, where the subscript 1 is for the factory pipe and the subscript 2 is for the tank.

P₁ + ½ ρ v₁² + ρ g y₁ = P₂ + ½ ρ v₂² + ρ g y₂

They indicate the pressure in the factory P₁ = 140000 Pa, the velocity

v₁ = 5.5 m / s and the initial height is zero y₁ = 0

the tank is at a pressure of P2 = 2000 Pa and a height of y₂ = 6.0 m

P₁ -P₂ + ρ g (y₁ -y₂) + ½ ρ v₁² = ½ ρ v₂²

let's calculate

140,000 - 2000 + ρ 9.8 (0- 6) + ½ ρ 5.5² = ½ ρ v₂²

138000 - ρ 58.8 + ρ 15.125 = ½ ρ v2²

v₂² = 2 (138000 /ρ - 58.8 + 15.125)

v₂ = $\sqrt{\frac{276000}{\rho } - 43.675 }$

In the exercise they do not indicate what type of liquid is being used, suppose it is water with

ρ = 1000 kg / m³

v₂ = $\sqrt{\frac{276000}{1000} - 43.675}$

v₂ = 15.24 m / s

5 0

3 years ago

How many calories are absorbed by a pot of water with a mass of 500g in order to raise the temperature from 20c to 30c?

LenaWriter [7]

Calories would denote the amount of heat.

Givens are:
Mass = 500 g
t0 = 20C
tf = 30C
C = 1 cal/gC

Formula:
Q=MCt

500g (1cal/gC) 10C= 5000 cal

Thank you for your question. Please don't hesitate to ask in Brainly your queries.

8 0

3 years ago

Can somebody helppp me pls thank you:)))))

Elena L [17]

The picture is very blurry I wish I could help

6 0

4 years ago

Read 2 more answers