The electromagnetic waves are used in these applications are:
Diagnosing illnesses: X-rays.
Warming and cooking food: infrared waves.
Transmitting data from remote controls to televisions: Radio waves.
What is electromagnetic waves?The oscillations between an electric field and a magnetic field produce waves known as electromagnetic waves, or EM waves. In other words, magnetic and electric fields oscillate to form electromagnetic (EM) waves.
When an electric field interacts with a magnetic field, electromagnetic waves are created. Therefore, they are referred to as "electromagnetic" waves. An electromagnetic wave's electric field and magnetic field are perpendicular to one another (at right angles). Additionally, they are perpendicular to the EM wave's direction. An electromagnetic wave can pass through any medium, including vacuum, solid materials, and air. It can spread or move from one area to another without the use of a medium.
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Identify the medium for the following waves:
ripples
The sound waves from a radio speakers
Seismic waves
Answer:
The sound waves from a radio speakers
Explanation:
What are the following amounts of energy in joules?
i. 20 kJ
ii. 10 MJ
iii. 2.5 MJ
iv. 0.5 kJ
help me!!!
Answer:
Explanation:
20 kJ = 20000 joules
10mj = 10000000 Joules
2.5mj = 2,500,000 joules
0.5kj = 500 joules
1. The diameter of the spool on a fisherman's reel is 6 cm when it is fully
wrapped with fishing line. After casting his lure 16 meters away into the
water, there is enough line left on the spool such that the spool has a
diameter of 4 cm. The fisherman then reels in the line, turning the bail (the
metal part that wraps the fishing line around the spool) at a constant speed
of 16 rad/s. How long does it take him to reel in the fishing line?
4cm -443
so just adda nd then dibvid e3 webri
helpp me
An object starts from REST and ends up reaching 3500 J of Kinetic Energy. How much work was done?
The diagram below shows a 1.0 x 105newton truck at rest on a hill that makes an angle of 8.0° with the
horizontal. What is the component of the truck's weight parallel to the hill? (hint: the weight was already
calculated, also you can use the work area to help you solve this.]
Answer:
[tex]it \: is \: mg \sin(8.0 \degree) \\ = 1.0 \times 10 {}^{5} \times \sin(8.0 \degree) \\ = 9.9 \times 10 {}^{4} newtons[/tex]
The component of the truck's weight parallel to the hill is 13,917.31 N.
The given parameters:
Weight of the truck, W = 1.0 x 10⁵ NInclination of the hill, θ = 8⁰The component of the truck's weight parallel to the hill is calculated as follows;
[tex]W_x = mg \times sin(\theta)\\\\W_x = W \times sin(\theta)\\\\W_x = 1\times 10^5 \times sin(8)\\\\W_x = 13,917.31 \ N[/tex]
Thus, the component of the truck's weight parallel to the hill is 13,917.31 N.
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If a resistance is added in series to a circuit, the circuit resistance is then
Answer:
greater
Explanation:
If a resistance is added in series to a circuit, the circuit resistance is then: greater
Which of the following is/are true of a vector? Check all that apply.
1. Velocity is a vector quantity.
2. Distance is a vector quantity.
3. The magnitude of a vector cannot be zero unless all of its components are zero.
4. A vector can have positive or negative magnitudes.
5. Vectors indicate quantity and direction.
Answer:
3
Explanation:
Research shows that continents move at an average rate of 2.3 cm per
year. Which two theories could be supported by this evidence?
Raisin theory
Expanding Earth theory
Contracting Earth theory
Theory of continental drift
SUBMIT
theory of continetal drift sumbit
PLEASE NO FILES. Ill give brainliest! 1. Which item below describes a quick change to
Earth's landscape?
A. a stone becoming smooth
B. dirt moving down a steep hill
C. flat land becoming a canyon
D. a glacier flattening the land below it
Answer:
B i think
Explanation:
plz let me know if wrong
Answer:
Yes it is B
Can you please mark Brainliest
An air craft heads. north at 400 km/hrs relative to the wind the air craft velocity is 300 km/hrs due north .find the velocity of the wind to the ground.
Answer:
325
Explanation
seio na:
If object A is half the mass of object B, then is it possible for them to have the same momentum
Of course !
Object-A just has to move twice as fast as Object-B.
when a human cannon ball shoots in the air for 9 seconds, she travels 37 meters before ut lands. Caculate the speed
Answer:
9.1 mph
Explanation:
Question 3 of 10
Jake lifts a backpack with a force of 30 N to a height of 1 meter in 4 seconds.
How much work does he do on the backpack?
A. 120 N
B. 30 N
C. 15 N
D. 60 N
Answer:
30N
Explanation:
what is the characteristics of sound
Answer:
Sound wave can be described by five characteristics: Wavelength, Amplitude, Time-Period, Frequency and Velocity or Speed.
Answer:
Sound wave can be described by five characteristics:
Wavelength,
Amplitude,
Time-Period,
Frequency and Velocity or Speed.
The minimum distance in which a sound wave repeats itself is called its wavelength.
Explanation:
good luck
Emma is making jelly. In order to make it dissolve quickly, should Emma put the block of jelly in whole, or
break it into cubes? Explain your answer.
[2 marks]
Answer:
Break it into cubes. When you make the thing that is dissolving smaller, the surface area of the thing dissolving it is larger, making the jelly more exposed.
To what temperature will a 50.0 g piece of glass raise if it absorbs 5275 joules of heat and its specific heat capacity is 0.500 J/g°C? The initial temperature of the glass was 20.0 degrees C.
*Include your units!
Round your answer to the nearest whole number.
Answer:
231 C final temperature, 211 C change in temperature
Explanation:
To solve this problem you you use the q=MCΔT equation, where q is heat, m is mass, c is specific heat, and ΔT is change in temperature. Since we're given heat and solving for temperature we rearrange the equation to q/(M*C)=ΔT. At this point we simply plug in the given values to get a ΔT of 211, but this is simply the change in temperature so you add the initial to this to get the final temp.
What is always true about the total amount of oxygen and carbon dioxide in the test tube?
As you turn on the stove, you notice that your water changes temperature from 67 degrees F to 93 degrees F. How many degrees of change is that in degrees C?
Answer:
14.44 degrees of C change
Explanation:
67 to 93 F is 26 degrees F change
C = 5/9 F
26 * 5/9 = 14.44 C change
A sound wave of a clock. what is the type of wave longitudinal, transverse or torsional
Answer:
transverse
Explanation:
how does 3rd class lever make our work easier
Answer:
the third class lever makes our work easier as effort is located at the middle, load at first and fore is applied at the buttom. which helps in accelerating work.
hope it is helpful to you