Answer:
The law of reflection states that the angle of reflection equals the angle of incidence—θr = θi. The angles are measured relative to the perpendicular to the surface at the point where the ray strikes the surface.
Explanation:
What notecard word is defined: a substance or particles that a wave travel through.
outer space
electromagnetic
medium
mechanical
Answer:
medium
Explanation:
A substance or particle that wave travel through is called medium. There are two main types of such medium, some contains particles and some are vacuums.
Waves can travel through a vacuum which contains no particles. Some can also contain particles. Waves can interact in different ways with the medium.what is weight training
Answer:
You lift weights and train on a daily basis?
Explanation:
If a function consumes current velocity (v) and acceleration (a), then the next velocity (next-v) can be calculated.
v + a
v * a
a / delta-t
v + (a * delta-t)
Answer:
v+(a*delta-t)
Explanation:
Answer:
v+(a*delta-t)
Explanation:
4.
If you lift a 30 kg weight 0.5 meters. How much Potential energy has it
gained?
Note:- Use g = 10 m/s?
a 150 J
b 60 J
C 180 J
d 100 J
Answer:
150 J
Explanation:
here, m= 30kg
height = 0.5 m
so
potential energy = mgh
= 30×10×0.5= 30×5
= 150 J
pls help me pls i’m begging u
Answer: Rolling Friction
Explanation:A rolling ball stops because the surface on which it rolls resists its motion. A rolling ball stops because of friction.
A child is sitting on a merry-go-round 2.8 m from the
center. If the tangential velocity of the ride is 0.89 m/s,
what is the centripetal acceleration of the dragonfly?
A. 0.11 m/s2
C. 0.32 m/s2
B. 0.28 m/s2
D. 2.2 m/s2
pls help me i’m begging u
Answer:
First one: False. Second one: decrease. Third one: decreased
Explanation:
For the first one, potato chips will make the floor more slippery than just regular tile. Second one, if the force holding the 2 things together decreases, the friction will decrease as well. For the third one, if water is over the floor, it makes it even more slippery.
Hope this helps!
Answer:
1:False 2:Decrease 3:Decrease
why did earth most likely form into distinct, separate layers? (HELP ASAP PLZ)
Answer:
The stratification of Earth into its geologic layers was brought about by the formation of the Earth's iron core. The iron core was generated by a combination of radioactive decay and gravitation, which raised the temperature enough for molten iron to form. The migration of molten iron to the center of the Earth displaced the less dense materials toward the surface.The early Earth needed lots of energy to trigger the creation of molten iron. Some of this energy came from radioactive decay. Radioactive elements such as uranium and thorium give off heat when they decay. Radioactive elements were present in greater amounts in the early Earth. The radiation emitted by these elements increased the temperature of the Earth by roughly 2,000 degrees Celsius (about 3,600 degrees Fahrenheit).Gravitational forces both helped the iron accumulate in the center of the Earth and helped generate additional temperature. As the early Earth compacted into a planet thanks to gravity, this compaction gave off heat. As a result, gravitational energy helped raise the temperature of the Earth by an additional 1,000 degrees Celsius (about 1,800 degrees Fahrenheit). In turn, this temperature increase helped sustain the presence of molten iron at the Earth's core.
Explanation:
The hotter temperature in the mantle make the tectonic plates to move apart and form distinct layers. Hence, option C is correct.
What is tectonic movement ?The rocky mantle's base is heated by the core of earth . Buoyancy forces attempt to drive the hottest rocks upward when the densest rock near the mantle's bottom becomes slightly less dense than the somewhat cooler rock above it.
Despite being solid, the rock in the mantle can progressively distort like hot wax because of the intense pressure and heat. As a result, the heated rock gradually pushes through the colder rock.
Cooler rock flows downward to occupy the space near to the core as the hot rock rises, where it gets heated and becomes buoyant enough to rise again later. Near the surface of the Earth, the rising hot rock comes into touch with certain cold rocks, emitting heat, cooling, and lead to the tectonic movement.
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I need this in by tomorrow please help-
Name one or more ways the laws of thermodynamics being harnessed or fought against at the power plant you studied. (A dam) This should be at least two full sentences.
Answer:
Two fundamental concepts govern energy as it relates to living organisms: the First Law of Thermodynamics states that total energy in a closed system is neither lost nor gained — it is only transformed. The Second Law of Thermodynamics states that entropy constantly increases in a closed system.
Explanation:
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Your little brother just learned to ride his new bike. If he travels 5.0 m in 130 s, what is his
average speed?
26 seconds per meter
Answer:
0.038m/s
Explanation:
5.0/130=0.038m
Which sequence does
the energy transformation in an automobile engine.
Answer:
Mechanical
Explanation:
How is a pitch that is heard when waves are closely spaced together described?
A.the same as when waves are spaced far apart
B.high
C.low
Answer:
The answer is high
Explanation:
I just took the test :))
Higher frequency and higher pitch are produced by sounds with shorter wavelengths. So, long waves sound low and short waves sound high.
What are wave properties?Physical characteristics of waves, such as transmission, reflection, polarization, diffraction, and refraction, are examples of wave attributes.
Waves are described mathematically using terms like wavelength, frequency, and amplitude.
Sound and light are two examples of common waves we encounter. Whether you're discussing waves or vibrations.
All of them may be classified according to the following four factors: amplitude, wavelength, frequency, and speed.
According to the graph, pitch perception is influenced by tone strength; below 1000 Hz, pitch tends to decrease with increasing loudness, and beyond 1000 Hz, pitch tends to increase.
Therefore, high pitch that is heard when waves are closely spaced together.
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A plastic rod is rubbed with a piece of wool, and a glass rod is rubbed with a piece of silk. An object is placed near the plastic rod, and an attractive force is detected. How will the object react when near the glass rod?
.A repulsive force will occur
.B.An attractive force will occur
.C.A neutralization will occur
.D.An electric discharge will occur
Answer:
B
Explanation:
An attractive force will occur between the plastic rod and nearby object.
What happen when opposite charged bodies come close together?An object is placed near the plastic rod, and an attractive force is detected then the object react when near the glass rod due to presence of attractive force between them. Attraction occurs between two bodies or objects when there is presence of opposite charges on both objects.
So we can conclude that an attractive force will occur between the plastic rod and nearby object.
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. Since the man is walking at a constant velocity, he has what acceleration
Una mujer sale de su casa, camina 650 m al Oeste y luego 500 m al Norte hasta llegar al centro comercial donde va a realizar sus compras. Calcular: a) distancia total recorrida y b) magnitud y dirección de su desplazamiento resultante.
Answer:
Explanation:
De la información dada:
La distancia total recorrida= 650 m + 500 m
La distancia total recorrida= 1150 m
La magnitud se puede calcular utilizando el teorema de Pitágoras.
a² = b² + c²
a² = 500² + 650²
a² = 250000 + 422500
a² = 672500
a = [tex]\sqrt{672500}[/tex]
a = 820 m
La dirección del desplazamiento resultante es la dirección noreste desde el punto de partida.
1. Horses with the greatest linear speed on a merry-go-round are located
A) near the center.
B) near the outside.
C) anywhere, because they all move at the same speed.
An increase in the energy of the wave________the amplitude of the wave.
Answer:
Increases the amplitude of the wave.
A quantity that has both direction and magnitude is known as what
Answer:
A vector is a quantity that has both magnitude and direction. DEF: A scalar is a quantity that has magnitude but NO direction.
Explanation:
20 POINTS & GIVING BRAINSLET IF ITS CORRECT.
DUE IN LESS THAN 5 MINUTES PLEASE HELP AND EXPLAIN.
sorry for the quality.
Answer:
it is d all of the above your welcome
2.
Wind Energy Is Actually An
Indirect Form Of
magnetic energy
solar energy
nuclear energy
electric energy
Max and his friend want to ride in the front car of a roller coaster. What happens to the car's kinetic energy as the roller coaster car is pulled to the top of the first big hill?
A.
Its kinetic energy is released into the air at the top of the hill.
B.
Its kinetic energy is added to the potential energy to give it twice as much speed.
C.
Its kinetic energy is converted to potential energy at the very top of the hill.
D.
Its kinetic energy is transferred to the wheels so it can roll quickly down the hill.
Answer:
KE =1/2mv^2
Explanation:
KE depends upon movement of the body
When a wave is absorbed by a medium, its energy is transferred to the medium. The energy is most often transformed into thermal energy. What measurement could you make to confirm the transfer and transformation of wave energy?
Answer:
TEMPERATURE
Explanation:
When a wave is absorbed by a material medium, different phenomena occur, but the collisions with the other particles causes the energy to be transformed into internal energy in the atoms and molecules of the material, with TEMPERATURE measurements the increase in the internal energy of the material.
A example of an energy conversion from kinetic to thermal energy would be....
A. friction
B. television
C.flower
D.gravity
Answer:
I would have to say C, friction
Explanation:
Thermal means heat, and friction causes heat. Good luck!
A generator is known to have 30V of potential difference with a charge of 8.5C. What is the energy produced by the generator?
Answer:
255J
Explanation:
Given parameters:
Potential difference = 30V
Charge = 8.5C
Unknown:
Energy produced by the generation = ?
Solution:
The energy produced by the generator can be derived using the expression below;
Energy = qV
q is the quantity of charge
V is the potential difference
Insert the parameters and solve;
Energy = 8.5 x 30 = 255J
Calculate the force needed to bring a 1,019-kg car to rest from a speed of 29 m/s in a distance of 118 m
Use the data provided to calculate the gravitational potential energy of each cylinder mass. Round your answers to the nearest tenth.
3 kg: kJ
6 kg: kJ
9 kg: kJ
Answer: 3kg: 14.7 6kg: 29.4 9kg: 44.1
Explanation: just did it on Edge
Answer:
Explanation:
3 kg 14.7
6kg 29.4
9kg 44.1
what are the benefits that you can get from playing volleyball
Help please and thank you
Answer:
B.
Explanation:
A. Is a no, because they the person still has a loan to pay and usually banks will not let people take another loan until the last one was paid in full.
B. This is true, if a person misses a month they get charged with warnings, tax, and fees.
C. This is a chose they don't have to spend their savings.
D. It is not the person's responsibility to take another loan unless it's the pay for the last one.
3. What factors can contribute to an infant's ability to develop sensory competencies?
Answer:
Explanation:
Here's how to stimulate your baby's senses in age-appropriate ways:
Decorate the nursery with colorful, bold patterns. ...
Play hand games. ...
Use "baby talk." Studies have shown that the sing-song, fluctuating tones mothers use to talk to their babies are important for language development. ...
Hold your baby as much as possible.
Given that on the moon g = 1.6 m/s2, and on Earth g = 9.8 m/s2, if a car on the moon weighs 3.8 N, what is its mass on Earth?
Weight = m • g
On the moon, 3.8N = m • 1.6 m/s^2
m = 3.8 / 1.6
m = 2.38 kg
Anywhere !
Everywhere !
