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4 years ago

Classify the waves as being mechanical or electromagnetic. microwave ocean wave seismic wave radio wave

Physics

1 answer:

vovangra [49]4 years ago

3 0

Answer:

<em>Micro waves and radio waves are electromagnetic </em><em>waves while </em><em>ocean wave and seismic wave are mechanical waves. </em>

Explanation:

Electromagnetic waves do not require a medium for propagation. They can travel along vacuum just like they travel through matter.

Further examples of electromagnetic waves are x rays, infrared waves etc.

Spectrum of electromagnetic waves in the increasing order of frequency is radio waves, microwaves, infrared waves, visible light, ultraviolet, x ray, gamma ray.

Mechanical waves require a medium for propagation. Thus they cannot travel through a vacuum.

Sound wave is an example of mechanical wave.

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how do humans judge temperature without the use of instruments such as thermometers? choose the most common process.

Schach [20]

Some humans judge temperature without the use of instruments include:

touching the object
feeling the radiant energy

<h3>What is temperature?</h3>

Temperature is the measure of the degree of hotness or coldness of a substance.

Temperature of substances are usually measured using thermometers.

The choice of thermometer depends on the temperature range to be measured.

However, some crude ways of measuring temperature include:

touching the object
feeling the radiant energy

In conclusion, temperature measures the hotness or coldness of objects.

Lear more about temperature at: brainly.com/question/25677592

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2 years ago

A girl is standing still in the middle of a baseball field. The girl catches the baseball and begins to move in the same directi

MrRa [10]

Inelastic, because the ball 'glued' to the girl, so she has the same quantity of movement as the ball

6 0

3 years ago

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A pendulum consists of a large balanced mass hanging on the end of a long wire. At the point where a 28-kg pendulum has the grea

Ray Of Light [21]

Answer:

The length of the wire is approximately 67.1 m

Explanation:

The parameters of the pendulum are;

The mass of the pendulum, m = 28 kg

The angle between the pendulum weight and the wire, θ = 89°

The magnitude of the torque exerted by the pendulum's weight, τ = 1.84 × 10⁴ N·m

We have;

Torque, τ = F·L·sinθ = m·g·l·sinθ

Where;

F = The applies force = The weight of the pendulum = m·g

g = The acceleration due to gravity ≈ 9.8 m/s²

l = The length of the wire

Plugging in the values of the variables gives;

1.84 × 10⁴ N·m = 28 kg × 9.8 m/s² × l × sin(89°)

Therefore;

l = 1.84 × 10⁴ N·m/(28 kg × 9.8 m/s² × sin(89°)) = 67.0656080029 m ≈ 67.1 m

The length of the wire, l ≈ 67.1 m

6 0

3 years ago

How many Gigameters in 1600 meters

USPshnik [31]

1.6e-6 gl on the rest of your physics its a killer for me too

6 0

3 years ago

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An athlete prepares to throw a 2.0-kilogram discus. His arm is 0.75 meters long. He spins around several times with the discus a

wlad13 [49]

Centripetal Force (Fcp) = ?

His arm length = Radius (R) = 0.75 m

Discus velocity = Linear Velocity (V) = 5 m/s

Discus mass (m) = 2 kg

Centripetal Acceleration (Acp) = V^2/R or W^2 x R
In this case i will use the V^2/R formula, because it uses the discus velocity (V).

$fcp = m \times acp \\ fcp = m \times {v}^{2} \div r \\ fcp = 2 \times {5}^{2} \div 0.75 \\ fcp = 2 \times 25 \div 0.75 \\ fcp = 50 \div 0.75$
$fcp = 66.666... = 66 \: newtons$

Answer: Last option, 66 N.

7 0

3 years ago

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