Answers
Answer:
B
Explanation:
Generally, longer wavelengths have less energy than shorter wavelengths because the higher the frequency, the shorter the wavelength. Since radio waves have longer wavelengths than visible light, the correct answer should be B.
Related Questions
Calculate the total displacement of a mouse walking along a ruler, if it begins at the location x = 5 m, and then does the following:
- It walks to x = 12 m
- It then walks a displacement of -8 m (NOT the same as x = -8 m)
- Lastly, it walks to the location x = 7 m
Answers
Answer:
18
Explanation:
12 - 5 + 8 = 15
12 - 8 = 4
7 - 4 = 3
15 + 3 = 18
The larger container of water contains more heat that can be used for heat conduction.
Answers
Yes, that statement is correct. The larger container of water will have more heat energy available for heat conduction due to its larger volume and higher mass. This means that it will take longer to heat up or cool down compared to a smaller container with less water. Additionally, the larger surface area of the container also allows for more efficient heat transfer through convection and radiation. Therefore, a larger container of water can be more effective for providing heat to a space or conducting heat through a system.
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Density of oil is less than the density of water. *
true
False
Answers
Answer:
false
Explanation:
because oil is thicker than water
Answer:
answer is false
Explanation:
water is more dense than oil so they can't mix . Oil float above the water
Please please help me :)
Answers
Answer:
Explanation:
2) From F=ma
Force =15×40=600N or kgm/s2
3)From the same equation making acceleration the subject of the formula will give
a=f÷m
=24÷4=6m/s2
4)m=f÷a
=45÷15=3kg
What type of liquid would never freeze
Answers
Answer:
gas
Explanation:
gasoline will never freeze up
Answer:
Alcohol
Explanation: I'm not sure
A cow standing atop a building in Times Square recalled a funny joke and began to laugh. The uncontrollable laughter caused the cow to fall over the side of the building. He fell for a time period of 3.5 s and landed in a bed of bushes. How fast was the cow moo-ving when he reached the bushes?
Which equation should be used to solve the problem?
Answers
Answer:
Vf = 34.3 m/s
1st equation of motion was used to solve.
Explanation:
In order to find the final speed of the cow, when it hits the bushes, we can use first equation of motion:
Vf = Vi + gt
where,
Vf = Final Velocity of Cow = ?
Vi = Initial Velocity of Cow = 0 m/s
g = acceleration due to gravity = 9.8 m/s²
t = time taken = 3.5 s
Therefore,
Vf = 0 m/s + (9.8 m/s²)(3.5 s)
Vf = 34.3 m/s
1st equation of motion was used to solve.
A crate is pulled with a force of 165 N at an angle 30 ° northwest. What is the resultant horizontal force on the crate?
Answers
Answer:
Resultant horizontal force = 143 N
Explanation:
Since the a gle is 30° northwest, then it means the resultant force will be horizontal and as such;
Resultant horizontal force = 165 * cos 30
Resultant horizontal force = 142.89
Approximating to a whole number gives;
Resultant horizontal force = 143 N
A marble is attached to a compressed horizontal spring and is then released. Which equation correctly shows the conservation of mechanical energy for this system? (1 point)
a. mgh=kx^2
b. mgh=(1/2)kx^2
c. (1/2)mv^2=kx^2
d. (1/2)mv^2=(1/2)kx^2
Answers
Answer: the answer is 1/2mv^2 = 1/2 kx^
Explanation:
the motions of the planets against the background stars in our sky can best be described as
Answers
The motions of planets against the background stars in our sky are not uniform and follow a complex pattern.
The apparent motion of planets is caused by their orbit around the sun, as well as the rotation of the Earth on its axis. The planets move in an eastward direction relative to the stars, but sometimes they appear to move westward. This is known as retrograde motion and occurs when the Earth overtakes and passes the planet in its orbit around the sun. The pattern of retrograde motion is different for each planet, depending on the length of its orbit and its distance from the sun. The outer planets, such as Jupiter and Saturn, have longer orbits and move more slowly than the inner planets, such as Mercury and Venus.
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Graphs are ____ of relationships
Answers
T4. Lisa uses some glue to fix a broken plate. She puts the glue under a desk lamp but the glue
doesn't dry. Then she puts the glue out in the sun and it dries. Why does light from the sun dry the
glue when light from the desk lamp does not?
a. Because the glue can take in energy from the light from the sun but not from the light from
the lamp.
b. Because light from the sun pulls energy out of the glue and light from the desk lamp does
not.
C.
Because the sun gives off a type of light that carries energy, and light from the desk lamp
does not.
d. Because light from the sun carries heat molecules, and light from the desk lamp does not.
Answers
The light from the sun dry the glue when light from the desk lamp does not because the sun gives off a type of light that carries energy, and light from the desk lamp does not.
Option c is correct.
Describe the sun?The sun emits a broad spectrum of light, including ultraviolet (UV) light, which carries more energy than visible light from a desk lamp.
When the UV light from the sun hits the glue it causes chemical reactions that result in the drying of the glue.
So we know that the light from the desk lamp may not have the right type of energy to initiate the necessary chemical reactions for the glue to dry.
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An airplane flying at 115 m/s due east makes a gradual turn following a circular path to fly south. The turn takes 15 seconds to complete. What is the radius of the curve that the plane follows in making the turn
Answers
Answer:
1100 m
Explanation:
To solve this problem, we must note that the airplane does not make a full circle. Instead, it turns from flying east to flying south. Check the attachment for a visual of this path.
We can use this equation:
\(\displaystyle v=\frac{d}{t}\)We are given the velocity and time of the airplane; therefore, we can solve for d in the equation.
\(\displaystyle d=vt\) \(\displaystyle d=(115)(15)\) \(d=1725\)The distance that the airplane travels is 1725 m.
Now, using our knowledge we know that the circumference of a circle is 2πr, and this is the distance traveled for an object in a circular motion.
However, in this problem, the airplane only travels for a fourth of a circular path, so we can use \(\displaystyle \frac{2\pi r}{4}\). This gives us 1/4 the circumference of a circle.
This is equal to the distance (1725 m) the airplane travels:
\(\displaystyle 1725=\frac{2\pi r}{4}\)Multiply 4 to both sides of the equation.
\(6900=2\pi r\)Divide both sides by 2pi.
\(r=1098.169107\) \(r \approx 1100\)The radius of the curve that the plane follows in making the turn is about 1100 m.
a refracting and reflecting telescope have the same diameter; the refracting telescope will be much longer than the reflector. group of answer choices true false
Answers
A refracting and reflecting telescope have the same diameter; the refracting telescope will be much longer than the reflector'
The answer choice is true.
Because refracting and reflecting telescopes are designed differently, they can have different lengths even though they have the same diameter. Refracting telescopes, commonly known as refractors, bend and concentrate light to create images. The length of a refractor is mostly dictated by the size of its objective lens, which is the primary light-gathering lens at the front of the telescope. A bigger lens necessitates a longer tube in order to accommodate it, resulting in a greater overall length of the telescope.
Reflecting telescopes, also known as reflectors, on the other hand, employ mirrors to gather and focus light. The length of a reflector telescope is dictated by the size of its primary mirror. A longer optical tube is required to accommodate a larger mirror, but it does not have to be as long as a refractor of the same diameter because the light from the mirror travels a shorter distance before reaching the eyepiece.
Even if a refractor and a reflector have the same diameter, the refractor will be considerably longer due to the length necessary to accommodate its huge lens, but the reflector will have a lower overall length since the light it gathers travels a shorter journey.
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western boundary currents such as the gulf stream transport warm water from the topics towards higher latitudestrue or false
Answers
The given statement "Western boundary currents such as the Gulf Stream transport warm water from the tropics towards higher latitudes" is true as Western boundary currents, like the Gulf Stream, do transport warm water from the tropics towards higher latitudes.
These currents are driven by prevailing winds and the rotation of the Earth, which result in a westward flow along the western boundaries of ocean basins. As warm water moves poleward, it transfers heat from the tropics to higher latitudes, influencing the climate of the regions it passes through.
The Gulf Stream, for instance, carries warm water from the Caribbean Sea towards the North Atlantic, contributing to the relatively mild climate of Western Europe.
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according to descartes, machines could not think because of what?
Answers
According to René Descartes, machines could not think because they lacked consciousness or a mind. Descartes proposed a dualistic philosophy, which distinguished between the physical body and the immaterial mind or soul. He believed that the mind, or "res cogitans," was responsible for conscious thought, reasoning, and intellect, while the body, or "res extensa," operated mechanically and lacked consciousness.
Descartes argued that thinking and consciousness were unique attributes of human beings and could not be replicated by machines or animals. He claimed that machines, no matter how complex or advanced, were fundamentally different from human beings because they lacked a conscious mind.
Descartes' view became influential in the philosophy of mind and has been subject to debate and criticism over the years. However, his ideas about the distinction between mind and body and the limitations of machines in thinking were significant contributions to the philosophical understanding of cognition and consciousness.
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What are sport skills sometimes referred to as?
a skill-related fitness
b. performance skills
c. health-related fitness
d. physical fitness
Answers
what is the current in a coil with a 703702 density of turns, that had a 416 x10-3 t magnetic field?
Answers
The current in a coil with a 703702 density of turns, that had a 416 x10⁻³ t magnetic field is approximately 2.10 x 10⁻⁷ A.
How do magnetic field and current interact?Current flowing through the circuit has a direct relationship with the magnetic field strength. Every time an electric current is present, a magnetic field is created that is always perpendicular to the passage of the current.B and H represent the magnetic field. Amperes per metre (A/M) and Newtons per metre per ampere (N/M/A) or Teslas are the SI units for H and B, respectively.
we know that
I = B * r / (μ_0 * N * k)
μ_0 = 4π x 10⁻⁷ T·m/A
k=703702 density of turns
now we have,
I / A = 0.148 / (k * turns/m²)
I / A = 0.148 / (703702 )
I = A * (0.148 / 703702)
I = 2.10 x 10⁻⁷ turns/m²
Therefore, current in the coil is approximately 2.10 x 10⁻⁷ A.
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Three-fourths of the elements on the
periodic table are:
a. Metals
b. Nonmetals
c. metalloids
Answers
Answer:
b
Explanation:
because the metalloids are the thing in the middle
3) What type of energy does a moving car release?
A) Chemical
B) Electrical
C) Mechanical D) Radiant
4) What type of energy do explosions release?
A) Chemical
B) Electrical
C) Mechanical D) Radiant
5) What type of energy does an x-ray give off?
A)Chemical
B) Electrical
C) Mechanical D) Radiant
What type of energy are the following:
6) A battery in your phone?
A) Potential Energy
B) Kinetic Energy
7) A battery in its package?
A) Potential Energy
B) Kinetic Energy
Answers
Answer:
Read the information down below. Hope it helps :)
Explanation:
3) C. When gasoline burns in a car engine, some of the chemical energy in the gasoline is converted into heat, then the heat is converted into mechanical energy, and finally mechanical energy moves the car.
4) A. Chemical energy is energy released when a substance undergoes a chemical reaction.
5) D. Radiant energy includes visible light, x-rays, gamma rays, and radio waves.
6) 1. Chemical energy. A battery stores chemical energy and converts it to electrical energy.
2. Potential energy is stored energy and the energy of position.
3. Kinetic energy is the energy of motion.
7. A battery is a device that stores chemical energy and converts it to
electrical energy.
8. Potential energy is stored energy and the energy of position.
9. Kinetic energy is the energy of motion.
The correct answer is 3).The correct option is C). 4) The correct option is A).
5). The correct option is D). 6). The correct option is A). 7) The correct option is A).
3). A moving car releases Kinetic and Potential energy both of which comes under the category of Mechanical energy.
4). Explosions releases heat which is produced due to chemical reaction during explosion, Explosions' releases Chemical energy
5) X-ray are electromagnetic radiations, They are released when electron losses it's speed.
6) A battery in the phone can be considered as an example of Potential energy as charging occurs due to change in potential difference.
7) A battery in it's package is an example of potential energy.
The correct options are 3).B, 4).A, 5).D, 6).A 7)A.
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A ball is thrown up in the air and then caught 10 seconds later. How high did it go and what was the initial speed up? (6)
Answers
Answer:
high=125m
speed up=50m s-¹
Explanation:
consider acceleration due to gravity = 10m s-²
upward as positive
in t=5s
ball rest momentarily velocity=0
you can know this by drawing s-t graph
consider the upward movement t=0-5s
we now have v=0 t=5 a= -10 and need find u
so use a=[v-u]/t
-10=[0-u]/5
-50=-u
u=50 ms-¹
then let find the displacement
s = (v+u)t*1/2
s= 50*5*1/2
s=125m
7. From the choices below, select ALL that are results of radioactive decay.
-the nuclear ejection of electrons
-nuclear fission
-radiation emission
-the nuclear capture of electrons
-nuclear fusion
Answers
What is the electric field strength at a point inside the insulation that is 2.6 mm from the axis of the wire
Answers
The electric field strength at a point inside the insulation, 2.6 mm from the axis of the wire, is approximately 0.449 N/C.
To calculate the electric field strength at a point inside the insulation, we can use Gauss's law and consider a cylindrical Gaussian surface centered on the wire. Since the wire has a linear charge density of 250 nC/m, the charge enclosed within the Gaussian surface can be calculated by multiplying the linear charge density by the length of the Gaussian surface.
Substituting the given values into the formula, we find that the charge enclosed (Qin) is equal to (250 x 10^-9 C/m) multiplied by (2.6 x 10^-3 m), resulting in approximately 650 x 10^-12 C.
Next, we apply Gauss's law, which states that the electric flux through a closed surface is equal to the charge enclosed divided by the permittivity of the material (ε). In this case, since we are within the insulation, we use the permittivity of the insulation material, which is given as 2.5ε0. Here, ε0 represents the vacuum permittivity.
Considering the cylindrical symmetry, the electric field is radial and points outward from the wire. By applying Gauss's law, we can relate the electric field (E) to the charge enclosed (Qin) and the radius (r) of the Gaussian surface. The formula for the electric field is E = Qin / (2πεr).
Substituting the values, we have E = (250 x 10^-9 C/m) / (2π x 2.5ε0 x 2.6 x 10^-3 m). Simplifying further, we can express the electric field as E ≈ 0.449 N/C.
Therefore, the electric field strength at a point inside the insulation, 2.6 mm from the axis of the wire, is approximately 0.449 N/C. This value represents the magnitude of the electric field and indicates the strength and direction of the electric field at that specific location within the insulation.
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The electric field must be zero inside a conductor in electrostatic equilibrium, but not inside an insulator. It turns out that we can still apply Gauss's law to a Gaussian surface that is entirely within an insulator by replacing the right-hand side of Gauss's law, Qin/ε0, with Qin/ε , where ε is the permittivity of the material. (Technically, ε0 is called the vacuum permittivity.) Suppose a long, straight wire with linear charge density 250 nC/m is covered with insulation whose permittivity is 2.5ε0.
What is the electric field strength at a point inside the insulation that is 2.6 mm from the axis of the wire?
What do industries consist of science
Answers
Answer:science that is employed by production companies in order to develop adapt and produce a product for theconsumer market
Explanation:
a 1.0 m long wire is placed perpendicular to a magnetic field of strength 0.20 t. if the wire experiences a force of 0.60 n, what is the magnitude of the current moving through the wire?
Answers
I = 3.0A
What is current?
A stream of charged particles, such as electrons or ions, traveling through an electrical conductor or a vacuum is known as an electric current. The net rate of electric charge flowing through a surface or into a control volume is how it is calculated.
For a current-carrying wire running perpendicular to a magnetic field, the magnetic force acting on the wire is given by:
F = ILB
F = magnetic force, I = current, L = wire length, B = magnetic field strength
Given values:
F = 0.60N, L = 1.0m, B = 0.20T
Plug in and solve for I:
0.60 = I(1.0)(0.20)
I = 3.0A
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Choose the true statements about electric fields and forces. (Choose 3)
Electric fields can be positive or negative.
Electric fields have a south pole and a north pole.
Electric fields can attract or repel objects.
Electric forces are strongest near the charged object.
Electric forces are strongest farther from the charged object.
Electric fields only repel objects.
Answers
Answer:
The three best answers are:
Electric fields can be positive or negative (depending on source)
Electric fields can attrace or repel objets (assuming the object is charged)
Electric forces are strongest near the charged object E ∝ 1 / R^2
An axon of a human nerve cell is 5 x 10-6m in radius and 0.5-mm long. If the resistivity of the cytoplasm (inside the axon) is 1.6 x 107 Ω.m; Calculate the resistance along the axon, Raxial.
Raxial = ----- Ω
Answers
The axial resistance of an axon is calculated using the formula R = ρL/A, where ρ is the resistivity, L is the length, and A is the cross-sectional area. In this case, the axial resistance is 11.28 MΩ.
The resistance along the axon is calculated using the following formula:
R = ρL/A
where:
R is the resistance in ohms
ρ is the resistivity in ohms per meter
L is the length in meters
A is the cross-sectional area in meters squared
In this case, we have:
ρ = 1.6 x 107 Ω.m
L = 0.5 mm = 0.0005 m
A = πr² = π(5 x 10-6)² = 7.854 x 10-13 m²
Therefore, the resistance is:
R = ρL/A = (1.6 x 107 Ω.m)(0.0005 m) / (7.854 x 10-13 m²) = 11.28 MΩ
Therefore, the axial resistance of the axon is 11.28 MΩ.
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What is the mass of a 7 kg bowling ball on the moon?
Answers
Answer:
7 kg
Explanation:
Mass remains the same, regardless of gravity. If the mass of the bowling ball is 7kg on Earth, the mass on the moon will be 7kg as well.
describe the trends of the elements including boiling/melting points and conductivity in relation to the periodic table
Answers
Explanation:
modern quantum mechanics explains these periodic trends in properties in terms of electron shells. the filling of each shell corresponds to a row in the table
An impermeable layer of rock or sediment is termed a(n) ____________ in a hydrogeologic context
Group of answer choices
1-Unsaturated zone
2-Aquifer (confined)
3-Aquitard or aquiclude
4-Aquifer (unconfined)
Answers
An aquitard, also known as an aquiclude, is a geological formation that has very low permeability, meaning it restricts or prevents the flow of water. It acts as a barrier or confining layer, limiting the movement of groundwater.
Unlike an aquifer, which is a permeable layer that can store and transmit water, an aquitard does not allow significant water flow. It acts as a barrier that hinders or slows down the movement of water between aquifers. Therefore, Aquitard or aquiclude is the appropriate term for an impermeable layer of rock or sediment in a hydrogeologic context.
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1. A ____ current means that more _____ flows per second.
2. A student connects up an ammeter in a circuit with a lamp and a cell. The reading is 0.5 A. She moves the ammeter to the other side of the lamp.
a. What will the ammeter read now?
b. Explain your answer.
Answers
1.
A stronger current means that more charge flows per second.
2.
a. The ammeter will read the same, 0.5 A.
b. The ammeter measures the flow of electric charge in a circuit, which is called the current. The amount of current in a circuit depends on the properties of the components in the circuit, not the position of the ammeter. Therefore, moving the ammeter to the other side of the lamp will not change the current flowing through the circuit, and the reading will remain the same.
1. An electrical current means that more electrons flows per second.
2. a. 0.5 A
b. Because current always stays the same in series
circuits.