Which item is not considered electromagnetic energy?

Answers

Answer 1

Answer: Sound waves are known to be the one that's not considered as a type of electromagnetic energy. As for microwaves and x-rays, they tend to share the same frequencies that can be considered as electromagnetic, and sound waves have a different frequency than them.

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What is an example of Deceleration?

Answers

That's a word often used to mean "slowing down". An example is what happens
when the brake is applied in a moving car.

But 'deceleration' is a very unofficial, unscientific word. If the forward speed
is decreasing, then a much more useful concept is "negative acceleration".

When the body starts moving with a slower speed than the initial speed and it slows down continuously, the this is called deceleration. Examples of deceleration -

When a ball is thrown upwards, its speed goes on decreasing as its height increases.
When a car applies brakes.

What effect does adding more loops to the wire coil have on the electromagnet?

Answers

The strength of the electromagnet depends on the magnitude of the current in the wire and the number of turns of wire around the core. If you add more turns to the coil and keep the magnitude of the current constant, the electromagnet becomes stronger.

Three friends tie three ropes in a knot and pull on the ropes in different directions. Adrienne (rope 1) exerts a 20-N force in the positive x-direction, and Jim (rope 2) exerts a 40-N force at an angle 53∘ above the negative x-axis. Luis (rope 3) exerts a force that balances the first two so that the knot does not move.a. Use equilibrium conditions to find F LonKx and F LonKy.
b. Use equilibrium conditions to determine the magnitude of F⃗ LonK.
c. Use equilibrium conditions to determine the angle θ that describes the direction of F⃗ LonK. Use positive values if the force is directed above the positive x-axis and negative values if it is directed below the positive x-axis.
d. Construct a force diagram for the knot.

Answers

Answer:

Part a)

$F = 4 \hat i - 32\hat j$

Part b)

Magnitude of the force is given as

$F = 32.2 N$

Part c)

As we know that Y component of the force is negative so here the force is directed below the X axis

$\theta = -82.9 degree$

Explanation:

Part a)

Adrienne apply the force of 20 N along +X direction and Jim apply force of 40 N at 53 degree above negative X axis

so we will have

$F_1 = 20 \hat i$

$F_2 = 40cos53(-\hat i) + 40 sin53(\hat j)$

$F_2 = -24\hat i + 32\hat j$

now let say the force exerted by Luis is F such that sum of all forces must be zero

now we have

$F_1 + F_2 + F_3 = 0$

so we have

$20\hat i -24\hat i + 32\hat j + F = 0$

$-4\hat i + 32\hat j + F = 0$

$F = 4 \hat i - 32\hat j$

Part b)

Magnitude of the force is given as

$F = √(4^2 + 32^2)$

$F = 32.2 N$

Part c)

As we know that Y component of the force is negative so here the force is directed below the X axis

So here we have

$tan\theta = -(32)/(4)$

$\theta = -82.9 degree$

A mass of 8 kg. moves at a rate of 14.3m/ sec. what is the KE developed by the mass

Answers

KE = 0.5 m v^2
= 0.5 * 8 * (14.3)^2
KE = 817.96 joule

An example of a high energy electromagnetic wave is a radio wave
a red light wave
an x-ray
an infrared wave
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Give an example of an energy transformation.
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When heat is transferred to a substance explain why the temperature goes up

Answers

An example of a high energy electromagnetic wave is "X-Ray"

When car runs, it's chemical energy (gasoline) converts into mechanical energy

Temperature is the measure of hotness or coldness of the body, so when heat expose to a substance, it's degree of hotness increases & it's temperature increases

Hope this helps!

an object is attached to a vertical ideal massless spring and bobs up and down between the two extreme points a and b. when the kinetic energy of the object is a minimum, the object is located

Answers

The correct answer for the question that is being presented above is this one: "A) at either A or B. "
Here are the following choices:
A) at either A or B.
B) midway between A and B.
C) 1/3 of the distance from A to B.
D) 1/4 of the distance from A to B.
E) 1/ times the distance from A to B.

Final answer:

The kinetic energy of a mass oscillating on a vertical spring is at a minimum when the object is at the extreme points of its motion. This is because the object has momentarily stopped moving, leading to zero kinetic energy. All the energy is instead stored as potential energy in the spring.

Explanation:

In the case of a mass oscillating on a vertical spring, the kinetic energy of the object is at a minimum when the object is at its extreme points, i.e., when it is at points 'a' or 'b'. This is because, at these positions, the object momentarily comes to rest before reversing its direction, thereby having a velocity (and hence kinetic energy), which is proportional to the square of the velocity, of zero. The energy at these points is mainly stored in the spring as potential energy.

At these extreme points, we have a situation where the potential energy (U) is maximum and the kinetic energy (K) is equal to zero. At the midpoint position x = 0, the entire energy is kinetic while the potential energy in the spring is zero, which suggests that the kinetic energy is minimum at the extreme positions.

This property of kinetic and potential energy fluctuating between each other is a common characteristic of simple harmonic motion.

Learn more about Kinetic Energy here:

brainly.com/question/32072191

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