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4 years ago

Which statement correctly distinguishes between all mechanical and all electromagnetic waves?

Physics

2 answers:

Sunny_sXe [5.5K]4 years ago

7 0

Answer:

Explanation:

Mechanical waves carry energy through matter; electromagnetic waves carry energy through space.

lutik1710 [3]4 years ago

3 0

Answer: Mechanical waves carry energy through a medium; electromagnetic waves carry energy through media and space.

Explanation:

The waves which require medium to travel are known as mechanical waves. The waves carry energy forward by compression and rarefaction that is by changing density /pressure of medium particles.

Electromagnetic waves can transfer energy through space as well as medium. In an electromagnetic wave, electric field generates magnetic field and magnetic field generates electric field. Electric field and magnetic field are perpendicular to each other and to the direction of motion.

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A supply plane needs to drop a package of food to scientists working on a glacier in Greenland. The plane flies 90.0 m above the

romanna [79]

Answer:

d = 771.3m

Explanation:

Let's first calculate the time of flight:

$Yf = Yo+Voy*t-g*t^2/2$ where Voy=0. Solving for t:

$t = \sqrt{2*90/9.8} =4.285s$

Now we calculate the horizontal displacement, wihch is the distance from the target to drop the package:

Xf = d = Vox*t

d = 180*4.285 = 771.3m

6 0

3 years ago

Which term describes an experiment with one dependent variable and one experimental variable

wlad13 [49]

A. Controlled experiment hope this helps

8 0

3 years ago

Read 2 more answers

Write with all the steps and formulas and drawing if needed.

lianna [129]

The answer is not contained detail explanation, just a solution and the required values.

All the details are in the pictures, the answers are marked with orange colour.

Note,

in the task no 20.:

$m_A - the \ mass \ of \ A; \ m_B-the \ mass \ of \ B \ balls.\\V_A \ and \ V_B-the \ velocities \ of \ the \ A&B \ balls \ before \ collision.\\V'_A \ and \ V'_B-the \ velocities \ of \ the \ A&B \ balls \ after \ collision.$

V - the velocity of the pair of the balls after collision.

in the task no 21:

m₁ - the mass of the copper ball; m₂ - the mass of the copper calorimeter; m₃ - the mass of the water; t₀ - the initial temperature of water in the copper calorimeter; θ - the final temperature in the calorimeter after the copper ball is transferred into a copper calorimeter; t₁ - the required initial temperature of the copper ball before it is transferred into the calorimeter.

7 0

3 years ago

Sedimentary rocks are the only rocks that can potentially containa.fossils.c.fractures.b.minerals.d.faults. Please select the be

Elena-2011 [213]

Hello Mr1guy24 

Question: Sedimentary rocks are the only rocks that can potentially contain?

Answer: Fossils (A)

Reason: This is what makes sedimentary rocks unique

Hope This Helps!
-Chris

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4 years ago

Read 2 more answers

Do electromagnetic waves require matter to travel?

VMariaS [17]

Answer:

No.

Explanation:

Electromagnetic waves do not require a medium of matter to move through, electromagnetic waves are used in things like your cell phone and telecommunications.

6 0

2 years ago