What is an electromagnetic wave?

A. An induced electric current
B. Vibrating electric and magnetic fields
C. Oscillating electric current
D. An electromagnet

Answer: D

Explanation:

cause i got it right

Answer:

Thermal energy, or heat, is the energy that comes from the movement of atoms and molecules in a substance. Heat increases when these particles move faster. Geothermal energy is the thermal energy in the earth. Motion energy is energy stored in the movement of objects. so the answer is thermal energy

Answer:

5.15 when the angle of incidence is equal to critical angle the angle of reflection is equal to 90 if the angle of incidence is bigger than the critical anger the reflected ray will not emerge from the medium but will be reflected back into the medium this is called total internet reflection

Explanation:

hope it's helpful

Answer:

The bronchioles function is to deliver air to tiny sacs called alveoli where oxygen and carbon dioxide are exchanged.

Explanation:

Bronchioles are air passages inside the lungs that branch off like tree limbs from the bronchi—the two main air passages into which air flows from the trachea (windpipe) after being inhaled through the nose or mouth. The bronchioles deliver air to tiny sacs called alveoli where oxygen and carbon dioxide are exchanged.

The positions to be considered are the position of the acorn and the earth.

The potential energy is the energy that is possessed by a body by virtue of its position. Hence, the potential energy of a body changes as its position changes.

Hence, to determine how the potential energy of the acorn changes in relation to the earth, the positions to be considered are the position of the acorn and the earth.

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Most stars take millions of years to die. When a star like the Sun has burned all of its hydrogen fuel, it expands to become a red giant then when it fully runs out it then dies

Answer:

. When the core runs out of hydrogen fuel, it will contract under the weight of gravity.

Explanation:

Answer:

ans: 13.53 × 10^17 Newton

16.92 meter far can the turtle travel in an hour.

What is the formula for Speed, Distance & Time?

Speed (or rate, r) is a scalar quantity that measures the distance travelled (d) over the change in time (Δt), represented by the equation r = d/Δt

Given, 12 mile in 19 hours so we require to convert in SI unit.

12 mile = 19312.1 meters

19 Hour = 68400 sec

Applying in formula, speed = Distance / Time

Distance / Time = 19312.1 / 68400 = 0.282 m/ sec ²

Speed = 0.282 m / sec ²

1 hour = 60 second

Putting the above value in the below formula

speed = Distance / Time

Distance = Speed x Time = 0.282 x 60 = 16.92 meter

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Answer:

At the point when an item is moved into the air toward a path other than straight up or down, the speed, quickening, and uprooting of the article don't all point a similar way. In circumstances like this, when taking care of the difficult we ought to apply the procedure of settling vectors into segments. At that point we apply the more straightforward one-dimensional types of the conditions for every segment. At long last, we can recombine the parts to decide the resultant.  

Explanation:

At the point when an item is moved into the air toward a path other than straight up or down, the speed, quickening, and uprooting of the article don't all point a similar way. In circumstances like this, when taking care of the difficult we ought to apply the procedure of settling vectors into segments. At that point we apply the more straightforward one-dimensional types of the conditions for every segment. At long last, we can recombine the parts to decide the resultant.  

Objects that are tossed or dispatched into the air and are dependent upon gravity are called projectiles. The way of a shot is a bend called parabola. In the event that an article has an underlying speed in some random time span, there will be level movement all through the trip of the shot.  

Shot movement is free fall with an underlying speed. The underlying flat speed of a shot is equivalent to the level speed all through the shot's flight.  

To discover the speed go a shot anytime during its flight, discover the vector aggregate of the parts of the speed now. We should utilize the Pythagorean hypothesis to discover the extent of the speed and the digression capacity to discover the course of the speed. On the off chance that an article has an underlying vertical part of speed and a level segment of speed, the item's movement ought to be settled into its segments, and afterward the sine and cosine capacities can be utilized to locate the vertical and even segments of the underlying speed. The speed of a shot dispatched at a point to the ground has both flat and vertical parts. The vertical movement is like that of an item that is hurled straight with an underlying speed.

This means that the two players move together at a final velocity of 4.70 m/s after the collision.

m1v1 + m2v2 = (m1 + m2)vf

Plugging in the values given in the problem, we get:

(100.0 kg)(4.70 m/s) + (m2)(0 m/s) = (100.0 kg + m2)vf

Simplifying, we get:

470 kg m/s = (100.0 kg + m2)vf

Dividing both sides by (100.0 kg + m2), we get:

vf = 4.70 m/s

A collision occurs when two or more objects come into contact with each other, often resulting in a sudden and forceful impact. Collisions can occur between any type of object, including cars, trains, airplanes, particles, or even celestial bodies like planets and asteroids. The effects of a collision can range from minor damage to catastrophic destruction, depending on the speed, mass, and angle of impact.

A collision refers to a situation where two different inputs produce the same output in a hash function or encryption algorithm. This can lead to security vulnerabilities, as it may be possible for an attacker to create malicious inputs that produce the same hash as legitimate inputs, thereby bypassing security checks and gaining unauthorized access to sensitive information. Preventing collisions is a critical concern in the design and implementation of secure cryptographic systems.

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Answer: = 25. 5 m

Explanation:

Solve for C using Pythagorean theorem:

1. \(\sqrt{a^{2}+b^{2} }=c\)

2.  \(\sqrt{22.2 m ^{2} +12.6m^{2} } =c\)

3. \(25.52646 m= c\)

∴ Magnitude of the vector is 25.5 m

Answer:

Your answer would be:
B.) Both carry energy in the form of vibration

Explanation:

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Direct timing is a continuous observation task using the timekeeping device to record the time in order to measure the speed of the waves. The speed of the wave can be measured by measuring the frequency of the wave using a wavemeter.

The frequency of the wave can be defined as the number of oscillations in one second. The frequency's S.I. units can be represented as per second (s⁻¹) or hertz.

The relationship between frequency (ν),  wavelength (λ), and speed of light (c) are:

V = νλ

Wavemeter can be defined as a device for determining the distance between successive wavefronts of equal phases along a wave. The determination is commonly made indirectly, by measuring the frequency of the wave. The wavemeter gives high accuracy because the frequency of the reference laser and the speed of light are known precisely.

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Answer:

"potential"

Explanation:

just completed a assignment on this hope it helped lol.

The position of a charge an electric field that gives an electric potential energy.

Energy is the ability or capability to do tasks, such as the ability to move an item (of a certain mass) by exerting force. Energy can exist in many different forms, including electrical, mechanical, chemical, thermal, or nuclear, and it can change its form.

A potential energy that arises from conservative Coulomb forces and is connected to the arrangement of a specific set of point charges inside a given system is known as electric potential energy.

The position of a charge an electric field that gives an electric potential energy.

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Answer:

250 calories

Explanation:

To calculate the amount of energy used to heat the water, you need to know the mass of the water and the change in temperature.

Assuming that the water has a density of 1 gram/milliliter, we can calculate the mass of the water by multiplying the volume (25 mL) by the density (1 g/mL), which gives us a mass of 25 grams. The change in temperature, ΔΤ, is the difference between the final temperature and the initial temperature, which in this case is 20°C - 10°C = 10°C.

Now that we have the mass and the change in temperature, we can plug these values into the formula to calculate the amount of energy used to heat the water: cal = 25 g × 10°C = 250 cal.

Therefore, the student used 250 calories of energy to heat the water from 10°C to 20°C.

The required velocity of mass 100 kg is 3.75 m/s.

The required velocity of mass 100 kg is determined by applying the principle of conservation of linear momentum as follows;

This principle states that in an isolated or closed system, the sum of the initial momentum of an object is equal to the sum of the final momentum.

momentum of the 100 kg mass = momentum of 150 kg mass

100 kg x v = 150 kg x 2.5 m/s

v = ( 375 kg m/s ) / ( 100 kg )

v = 3.75 m/s

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The complete question is below:

A mass of 150 kg is moving 2.5 m/s. How fast would an object with a mass of 100kg need to be going to hit the previous mass head on and come to a complete stop?​

The magnitude of a vector represents its length or size, regardless of its direction. In the case of a vector with a magnitude of 15 ft/s down, the magnitude is simply 15 ft/s.

The "down" direction indicates the direction of the vector, while the magnitude specifies the length or size of the vector. So, the magnitude of the vector in this case is 15 ft/s.

With the same force applied, the acceleration of car with three passengers is 1.04 m/s².

We need to know about force to solve this problem. According to second Newton's Law, the force applied to an object will be proportional to mass and acceleration. Hence, it can be written as

F = m . a

where F is force, m is mass and a is acceleration

From the question above, we know that

mcar = 1600 kg

a0 = 1.2 m/s²

mpassenger = 80 x 3 kg = 240 kg

As we know that the force of car is the same whether there are passengers or no. Hence, we can write

F = F

mcar . a0 = mtotal . a

1600 . 1.2 = (1600 + 240) . a

1920 = 1840a

a = 1.04 m/s²

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Neglecting all other forces, if the pressure gradient force doubles in magnitude, the wind speed doubles in magnitude as well. Therefore, the correct option is (c) the wind speed doubles in magnitude.

The pressure gradient force is responsible for causing the wind to move from high pressure to low pressure areas. It is directly proportional to the magnitude of the pressure difference and inversely proportional to the distance between the two pressure points. If the pressure gradient force doubles, the wind speed will also double, as the wind will need to accelerate more to compensate for the stronger force acting upon it.

The other options are not affected by a doubling of the pressure gradient force. The wind moving in a circle with double the radius would be affected by changes in the Coriolis force, not the pressure gradient force. The wind experiencing double the friction would be affected by changes in frictional forces, not the pressure gradient force.

The wind changing direction would be affected by changes in the Coriolis force or by changes in the direction of the pressure gradient force, not the magnitude of the pressure gradient force alone.

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When the package hits the ground, the plane will be 4,687.2 m away.

The time taken for the package to fall from the given height is known as the time of motion of the package and the magnitude is calculated by applying the following kinematic equation.

h = vt + ¹/₂gt²

where;

h = 0 +  ¹/₂gt²

t = √(2h/g)

t = √ [ (2 x 1390) / ( 9.8) ]

t = 16.8 seconds

The horizontal displacement of the plane at this time;

X = ut

where;

X = 279 x 16.8

X = 4,687.2 m

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The pair that has the biggest electronegativity difference between the two atoms at the top of your list is given below:

In a covalent bond, an atom's ability to draw shared electrons is referred to as electronegativity. The strength with which an element attracts the shared electrons depends on the value of its electronegativity.

Therefore, An atom's or functional group's propensity to draw electrons to itself is known as electronegativity, which is a chemical property. An atom's electronegativity is influenced by both its atomic number and the separation of its valence electrons from its charged nuclei.

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See full question below

Put the pairs of atoms in order, with the pair that has the biggest electronegativity difference between the two atoms at the top of your list. Fluorine and Francium, Phosphorus and lithium, nitrogen and sodium, Chlorine and cesium, nitrogen and sulfur.

High Voltage DC (HVDC) transmission is the transmission of high-voltage electric power using direct current. This technology is utilized as a supplement or an alternative to alternating current (AC) transmission systems, which are typically utilized at lower voltages and shorter distances. HVDC transmission offers a number of benefits, including lower losses over long distances and reduced environmental impact.

One of the major features of HVDC transmission is high voltage.High voltage is a crucial feature for HVDC transmission. High voltage levels (typically in the range of 200 kV to 800 kV) enable long-distance transmission of power with low losses. This is due to the fact that at high voltages, the current required to deliver a specific quantity of power is lower.

As a result, lower current levels result in lower resistive losses, which are proportional to the square of the current. As a result, HVDC transmission systems are more efficient over long distances and can deliver more power than AC transmission systems at similar voltages. So, the correct option is d) High Voltage.

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Answer:

3149.181 N

Explanation:

the force exerted by the atmosphere can be calculated as

F = PA

Where P is the atmospheric pressure and A is the area of the sheet of paper.

The atmospheric pressure is P = 101325 Pa

And the area is equal to

A = Length x Width

A = 0.148 m x 0.210 m

A = 0.03108 m²

Because 14.8 cm = 0.148 m and 21.0 cm = 0.210 m

Now, we can calculate the force as

F = (101325 Pa)(0.03108 m²)

F = 3149.181 N

So, the force exerted is 3149.181 N

Answer:

12.5

Explanation:

the formula v⁰y=usin∅

therefore substitution of the values

v⁰y= 22sin(35) = 12.5

The amount of work done is 2000 J. Therefore, the correct option is D. 2000 J.

The potential difference between two points in space is 1000 V, and 2 coulombs of charge is transferred from the point of lower potential to the point of higher potential. The amount of work done is 2000 J. Work done is equal to the amount of charge transferred multiplied by the potential difference between the two points. Mathematically, the work done, W = Q x V, where W is work done, Q is the charge transferred, and V is the potential difference between the two points. In this question, the potential difference between the two points is given as 1000 V, and 2 coulombs of charge is transferred from the point of lower potential to the point of higher potential. Hence, the work done is:

W = Q x V = 2 C x 1000 V = 2000 J

Therefore, the amount of work done is 2000 J.

Therefore, the correct option is D. 2000 J.

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Answer:

d

Explanation:

Which would have a longer vector arrow?

a: A vector representing 100 miles/hour north

b: Avector representing 100 miles/hour east

c: A vector representing 100 miles/hour south

d: They would all be the same length​

was this the full question

The concept of "God" means different things to different people, so it's difficult to provide a definitive answer to this question. Some people believe in a specific deity or deities, while others believe in a more abstract or universal concept of divinity. Still others do not believe in any kind of higher power at all. There is no single piece of evidence that can definitively prove or disprove the existence of God, as people's beliefs about God are often based on faith, personal experiences, and philosophical arguments. Ultimately, the question of whether God exists is a matter of personal belief and interpretation.