Physics, 19.05.2020 03:05 alexdub9649

Waves transmit energy, but not all waves are alike. We can categorize waves in several ways. First, we can categorize waves on the basis of the direction of movement of the individual particles of the medium relative to the direction that the waves travel. A transverse wave is a wave in which particles of the medium move in a direction perpendicular to the direction that the wave moves. Wave energy will begin to be transported from left to right, but the medium will be displaced upwards and downwards. Electromagnetic waves are transverse waves. The parts of these waves include the crest, or peak, and the trough, or valley. A longitudinal wave is a wave in which particles of the medium move in a direction parallel to the direction that the wave moves. As the energy is transported from left to right, the medium will be displaced left and right as well, so longitudinal waves are always characterized by particle motion being parallel to wave motion. Sound waves are an example of a longitudinal wave. The main parts of a longitudinal wave are the areas of compression and rarefaction.

Another way to classify these waves is how they travel or are transmitted. Electromagnetic waves can travel through a vacuum; sound waves cannot. The speed of these two waves also varies with the medium they are passing through. A sound wave travels fastest through a solid because the particles are closest together in this state of matter and easier to compress back and forth. An electromagnetic waves travels fastest through a vacuum and slowest through a solid. An electromagnetic wave is formed by the vibrations of electric and magnetic fields. Electromagnetic waves are made of discrete packets of energy called photons; therefore these waves have both particle-like and wave-like properties.

How do mechanical waves compare with electromagnetic waves?

The letter D. in the image refers to the crest of a wave.
This is a sound wave.
Wave energy is transported from left to right.
Can you hear the train coming? You put your ear to the ground because sound travels fastest through a solid.
Letter C. is an area of compression.

Answers: 1

Show answers

Another question on Physics

Physics, 21.06.2019 14:30

Foreshadowing. the prologue states that this is the story of "star-crossed lovers." there are four strong foreshadowings of evil in act 1. identify at least two foreshadowings and explain their purpose.

Answers: 1

Answer

Physics, 21.06.2019 22:30

How have the competing explanations' experiments on atoms affected the development of the atomic model?

Answers: 1

Answer

Physics, 21.06.2019 23:00

We want to calculate the total metabolic heat generated by a singing canary taking into account heat transfer by radiation, convection and exhaling air. the air temperature is 20 oc, canaryâ€™s body internal and surface temperature is 33oc, external body surface convective heat transfer coefficient is 25.2 w/m2 .k, temperature difference between the inhaled and exhaled air is 4.3 oc, the ventilation rate is 0.74 cc of air per second, specific heat of air is 1.0066 kj/kg.k and density of air is 1.16 kg/m3 . assume the canaryâ€™s body to be a cylinder with 7 cm diameter and 9 cm length, and heat exchange is from the side as well as the top and bottom of cylinder. calculate 1) the net rate of heat lost by radiation, assuming heat gained by the bird through radiation from the surroundings is 11.5 w; 2) rate of heat transferred by convection to the surrounding air; 3) rate of heat transferred in the exhaling air without considering any internal evaporation; 4) total metabolic power.

Answers: 2

Answer

Physics, 22.06.2019 01:00

What is the relationship between atmospheric pressure and the density of gas particles in an area of increasing pressure? (2 points) as air pressure in an area increases, the density of the gas particles in that area decreases. as air pressure in an area increases, the density of the gas particles in that area increases. as air pressure in an area increases, the density of the gas particles in that area remains constant. as air pressure in an area increases, the density of the gas particles in that area increases and decreases in an alternating pattern. 3. which of the following correctly describes a way in which earth's atmosphere interacts with the geosphere? (2 points) it contains gases that living organisms breathe. it contains gases that trap incoming solar radiation. it provides a medium for cycles that provide nutrients to living organisms. it provides a medium for water to move between earth's surface and the air. 4. which of the following is considered a drawback to using wind energy as a source of power? (2 points) wind energy is nonrenewable. wind energy produces large amounts of air pollution. wind turbines can kill birds that fly through the rotors. wind turbines are built too close to major population centers. 5. a meteorologist predicts that the weather in a region will soon change from clear skies to probable thunderstorms. prior to making this prediction, what did the meteorologist most likely observe on a barometer? (2 points) the barometer fell slightly. the barometer fell substantially. the barometer rose slightly. the barometer rose substantially. 6. which of the following do meteorologists not typically use weather balloons to record? (2 points) atmospheric pressure cloud types humidity temperature 7. during which step in the can crush lab did water vapor force air from the can? (2 points) the can was filled nearly to the top with water. the can was placed on the hot stove top burner for several minutes. the can was removed from the hot stove top burner. the can was placed upside-down in the water-filled pan.

Answers: 3

Answer

You know the right answer?

Waves transmit energy, but not all waves are alike. We can categorize waves in several ways. First,...

Questions