Answer: Ima have to say broccoli
Explanation:
What is the root cause of earths magnetic field?
Answer:
I'm not sure but I think it is electric currents in the outer core
How does the newton law work
Answer:
The first law is that if no force acts on an object, its motion will not change. In the second law, the force acting on an object is equal to its mass and acceleration. The third law is that when two objects interact, they act on each other with equal magnitude and opposite forces.
QUESTION 17
Which statement best describes the difference between strong nuclear forces and weak nuclear forces? (2 points)
O Weak nuclear forces are involved when certain types of atoms break down. Strong nuclear forces are responsible for
holding atoms' nucleus together.
O Weak nuclear forces hold bonds between atoms together. Strong nuclear forces hold together the nucleus of an
atom,
O Strong nuclear bonds prevent atoms from falling apart. Weak nuclear bonds prevent compounds from falling apart.
O Strong nuclear forces are involved in breaking electrons from their shells. Weak nuclear forces hold protons in the
nucleus.
Answer: Weak nuclear forces are involved when certain types of atoms break down. Strong nuclear forces are responsible for holding atoms' nucleus together.
Compare the direction that a transverse wave travels with the direction that matter in the wave vibrates
In a transverse wave, matter vibrates in a direction that is parallel to the wave motion, whereas the direction of energy transfer is perpendicular to the wave's direction of motion.
How can the direction that a transverse wave moves be compared to the direction that the wave's constituent matter vibrates?A transverse wave transfers energy in a direction that is perpendicular to the way that the wave's constituent matter vibrates. For instance, when a rope is shaken back and forth to produce a wave, the energy moves perpendicular to the rope's motion from one end to the other.
In contrast, the path of energy transfer in a longitudinal wave is parallel to the direction in which the wave's constituent matter vibrates. For instance, as sound waves pass through air, the molecules in the air oscillate back and forth parallel to the wave's motion.
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explain how conduction, convention and radiation all transfer heat when cooking in a pan of water.
Answer:
hope this helps love! There are three methods of heat transfer: conduction, convection, and radiation. Cooking of food usually uses a combination of these methods. Conduction transfers the heat using direct contact; food is heated directly in a metal pan, in a liquid, or surrounded by air. ... The heat from the water is transferred to the egg.
Explanation:
When the water is heated, thermal expansion happens so the particles move farther apart and then the hot water moves up because it is less dense then the colder water. ... Convection is happening because when air is heated by the fire, the air becomes less dense and moves up because denser things sink.
What is the proper way to name the range of cells located in column a row 3 through column c row 7? 3a:7c 7c:3a a3:c7 c7:a3
"The proper way to name the range of cells located in column A row 3 through column C row 7 is A3:C7."
Each worksheet is composed of countless cells, which are rectangular shapes. A cell is the place where a row and a column meet, or the intersection of a row and a column.
A, B, and C are used to identify columns, while digits are used to identify rows (1, 2, 3). Based on its column and row, each cell has a unique name or cell address. The cell address in the example below is C5, because the chosen cell intersects column C and row 5.
Additionally, it is possible to select many cells at once. A cell range is a collection of cells. You will refer to a cell range using the cell addresses of the first and last cells in the range, separated by a colon, rather than a single cell address. Cells A1, A2, A3, A4, and A5 would be included in the range represented by the letters A1:A5.
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How many atoms are in 3MgCl2?
Answer:
3MgCl2 has 9 atoms.
Explanation:
The Element Magnesium (Mg) has 3 atoms.
The Element Chloride (Cl) has 6 attoms.
Their fore 6 + 3 is 9 of course. 3MgCl2 has 9 atoms.
BTW: 3MgCl2 is a molecular compound as well as H2O and CO2.
I need help pls. Solve 1+cos 30º/1-sin 30º. Plz help me
Answer:
\( \huge \boxed{ \boxed{2 + \sqrt{3}}} \)
Explanation:
to understand thisyou need to know about:trigonometryPEMDASgiven:\( \frac{1 + \cos( {30}^{o} ) }{1 - \sin( {30}^{o} ) } \)tips and formulas:cos(30°)=\(\frac{\sqrt{3}}{2}\)\( \sin( {30}^{o} ) = \frac{1}{2} \)let's solve:\( \sf sustitute \: the \: value \: of \: \sin( {30}^{o} ) and \cos( {30}^{o} ) \\ \sf \frac{1 + \frac{ \sqrt{3} }{2}}{1 - \frac{1}{2} } \)\( \sf simplify : \\ \frac{ \frac{2 + \sqrt{3} }{2} }{ \frac{1}{2} } \)\( \sf simplify(fraction) : \\ \frac{2 + \sqrt{3} }{2} \div \frac{1}{2} \\ \frac{2 + \sqrt{3} }{2} \times 2 \\ \therefore 2 + \sqrt{3} \)Compare resistance of electrical flow through wires to the resistance of water flow in a pipe. How are they similar?
Answer:
Resistance to the flow of electricity in wires and resistance to the flow of water in pipes are similar in several ways:
Both are affected by the size of the conductor: In both cases, the resistance to flow is affected by the size of the conductor. A larger diameter wire or pipe will offer less resistance to the flow of electricity or water than a smaller diameter one.
Both are affected by the length of the conductor: The resistance to flow also increases with the length of the conductor. A longer wire or pipe will offer more resistance to the flow of electricity or water than a shorter one.
Both are affected by the material of the conductor: Different materials have different resistances to flow. In electrical wires, metals are commonly used as they have low resistance. In pipes, materials such as copper, plastic, or steel may be used depending on the specific application.
Both can be reduced by minimizing obstructions: Resistance to flow can be reduced in both cases by minimizing obstructions in the path of the flow. In pipes, for example, the use of smooth inner walls and proper pipe bends can help reduce resistance. In electrical wires, minimizing the number of connections and using high-quality connections can help reduce resistance.
Overall, resistance to flow is a fundamental concept that applies to the flow of electricity and water, and the factors affecting resistance are similar in both cases.
What does oxygen deficit represent?
Answer: It represents a small amount of oxygen being taken into the body when the body consumes more oxygen than what is being intake
Explanation: to be deficit means the amount of something is too small and there for oxygen deficit is a too small amount of oxygen.
can the transfer of heat by convection occur in solids ?why?
Answer:
cannot
Explanation:
because convection occurs to difference in densities between particles and there is a movement of particles during convection ( gases and liquids ) , in solids , atoms are very tightly packed and cannot move
Can someone please help me with this?? It's due in an hour and I've been stuck on it!
I've gotten the first three of all of them done, but I am stuck on the last two. You can probably look them up.
[Part One]
Mercury:
1. What shape is the orbit of Mercury?
2. Why do you think the Sun is not at the center of Mercury’s orbit?
3. What did you notice about the motion of Mercury in its orbit?
Click on each highlighted section and record the area. What do you notice about each area?
4. Click on the “Toggle Major Axes” button. Record any observation regarding the perihelion distance (Rp) and the aphelion distance (Ra).
Earth:
1. What is the orbit of the Earth?
2. Is the Sun at the center of the Earth’s orbit?
3. Describe the motion of the Earth throughout its orbit? Does it move at constant speed?
4. Click on each highlighted section and record the area. What do you notice about each area?
5. Click on the “Toggle Major Axes” button. Record any observation regarding the perihelion distance (Rp) and the aphelion distance (Ra).
Mars:
1. What is the orbit of the Mars?
2. Is the Sun at the center of the Mars’s orbit?
3. Describe the motion of Mars throughout its orbit? Does it move at constant speed?
4. Click on each highlighted section and record the area. What do you notice about each area?
5. Click on the “Toggle Major Axes” button. Record any observation regarding the perihelion distance (Rp) and the aphelion distance (Ra).
[Part Two]
Saturn:
1. What is the orbit of the Saturn?
2. Is the Sun at the center of the Saturn’s orbit?
3. Describe the motion of Saturn throughout its orbit? Does it move at constant speed?
4. Click on each highlighted section and record the area. What do you notice about each area?
5. Click on the “Toggle Major Axes” button. Record any observation regarding the perihelion distance (Rp) and the aphelion distance (Ra).
Neptune
1. What is the orbit of the Neptune?
2. Is the Sun at the center of the Nepturn’s orbit?
3. Describe the motion of Neptune throughout its orbit? Does it move at constant speed?
4. Click on each highlighted section and record the area. What do you notice about each area?
5. Click on the “Toggle Major Axes” button. Record any observation regarding the perihelion distance (Rp) and the aphelion distance (Ra).
Comet
1. What is the orbit of the comet?
2. Is the Sun at the center of the comet’s orbit?
3. Describe the motion of the comet throughout its orbit? Does it move at constant speed?
4. Click on each highlighted section and record the area. What do you notice about each area?
5. Click on the “Toggle Major Axes” button. Record any observation regarding the perihelion distance (Rp) and the aphelion distance (Ra).
Answer:
Earth:1. What is the orbit of the Earth?
365 days
2. Is the Sun at the center of the Earth’s orbit?
Yes
3. Describe the motion of the Earth throughout its orbit? Does it move at constant speed?
Yes, the Earth moves pretty quickly and orbits around the Sun at a rate of approximately 67,000 miles per hour.
Mars:1. What is the orbit of Mars?
The shape is circular, 687 days
2. Is the Sun at the center of Mars’s orbit?
Yes
3. Describe the motion of Mars throughout its orbit? Does it move at constant speed?
Travels at a regular steady speed, yes moves at a constant speed
Saturn:
1. What is the orbit of Saturn?
Circular, 29 years
2. Is the Sun at the center of Saturn’s orbit?
Yes
3. Describe the motion of Saturn throughout its orbit? Does it move at constant speed?
Just like Mars, it moves faster when it is closer to the sun, so yes.
Neptune:1. What is the orbit of Neptune?
Circular, 165 years
2. Is the Sun at the center of Nepturn’s orbit?
Yes
3. Describe the motion of Neptune throughout its orbit? Does it move at constant speed?
A steady consistent speed and yes it moves at a constant speed.
Comet:1. What is the orbit of the comet?
An oval, 200 years
2. Is the Sun at the center of the comet’s orbit?
No
3. Describe the motion of the comet throughout its orbit? Does it move at constant speed?
A comet starts off slow then picks up speed and no it does not move at a constant speed.
Explanation:
I hope this helps, You're welcome.
What is the lowest frequency of light
The lowest frequency of light that can exist is zero hertz (Hz), which is also known as direct current (DC).
This is because light is a type of electromagnetic radiation that consists of oscillating electric and magnetic fields. These fields oscillate at a certain frequency, and the frequency determines the energy and properties of the light.
However, in the absence of any oscillation, there is no frequency and hence no light. In other words, the lowest frequency of light is no light at all.
It's worth noting that there are other forms of electromagnetic radiation that have frequencies lower than visible light, such as radio waves and microwaves. These types of radiation have frequencies that range from about 3 kilohertz (kHz) to several gigahertz (GHz).
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hari planted to go abroad. change into negative
Answer:
Hari didn't plan to go abroad
Explanation:
Abroad planned to go to hari.
What happens to the gravitational force exerted by one object on another when the mass of the objects is doubled?
Taking into account the Universal Law of Gravitation, the force of gravity between them is quadrupled the mass of both of the objects is doubled.
Universal Law of GravitationThe Universal Law of Gravitation establishes that bodies, by the simple fact of having mass, experience a force of attraction towards other bodies with mass, called gravitational force.
The Universal Law of Gravitation states that the gravitational force between two bodies is directly proportional to the product of their masses and inversely proportional to the square of the distance that separates them.
Mathematically it is expressed as follows:
\(F=G\frac{Mm}{d^{2} }\)
where:
G is the universal gravitational constant, with a value of 6.67×10⁻¹¹ \(\frac{Nm{2} }{kg^{2} }\).M and m are the masses of the bodies that interact.d is the distance that separates them.Gravitational force when mass of the objects is doubledSince the gravitational force is directly proportional to the mass of both interacting objects, more massive objects will attract each other with a greater gravitational force. So as the mass of either object increases, the force of gravitational attraction between them also increases.
In this case, the mass of the objects is doubled. Then, the force of gravity between them is quadrupled.
In summary, the force of gravity between them is quadrupled the mass of both of the objects is doubled.
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Use the electron arrangement interactive to complete the table
The number of electrons that is needed to fill the following sublevels are:
1s = 2 electrons. 2s = 2 electrons. 2p = 6 electrons. 3s = 2 electrons. What is the number of electrons needed to complete the table?The formula to find this out is:
= 2 x (2 x Level +1)
1s = 0 levels
Number of electrons:
= 2 x (2 x 0 + 1)
= 2 electrons
2s = 0 levels
= 2 x (2 x 0 + 1)
= 2 electrons
2p = 1 level
= 2 x (2 x 1 + 1)
= 6 electrons
3s = 0 levels
= 2 x (2 x 0 + 1)
= 2 electrons
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The completed table using the electron arrangement interactive is attached below. In this table for sublevel 1s, 2s, 2p and 3s electron needed is 2,2,6 and 2 respectively.
What is electron arrangement?The electron arrangement is the way or process to arrange the electrons in an atom. The number of electron needed per sublevel are expressed in following points.
The number of electron need to feel sublevel 1s is 2.The number of electron need to feel sublevel 2s is 2.The number of electron need to feel sublevel 2p is 6.The number of electron need to feel sublevel 3s is 2.The image of the table which fill the sublevel is attached below. In this table all the electron is fulfilled with needed electrons.
Thus, the completed table using the electron arrangement interactive is attached below. In this table for sublevel 1s, 2s, 2p and 3s electron needed is 2,2,6 and 2 respectively.
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What is the magnitude of displacement if a person goes 290 m east followed by 150 m west?
Answer:140 m
Explanation:
Displacement = 290-150= 140 m
Katniss Everdeen is training for the annual Hunger Games. She shoots an arrow at 150 m/s at an angle of 30° NW. Calculate the horizontal and vertical velocities (X and Y components) of the arrow.
Answer:
Explanation:
The Horizontal velocity is expressed as:
Vx = -V cos 30
Vx = -150cos30
Vx = -150(0.8660)
Vx = -129.90m/s
The vertical component of the velocity is expressed as:
Vy = V sin 30
Vy = 150sin30
Vy = 150(0.5)
Vy = 75m/s
Find the electric field E⃗ (r⃗ )E→(r→)E_vec(r_vec) inside the sphere (for rrr< aaa) in terms of the position vector r⃗ r→r_vec. Express your answer in terms of r⃗ r→r_vec, rhorhorho (Greek letter rho), and ϵ0ϵ0epsilon_0.
Solution :
Using the Gauss law, the electric field intensity of a sphere is given by :
\($E. 4 \pi r^2 = \frac{Q_{enc}}{\epsilon_0}$\)
\($E = \frac{Q_{enc}}{4 \pi r^2 \epsilon_0}$\)
Now the enclosed charge inside the sphere (r<a) is
\($Q_{enc}= \rho V$\)
\($Q_{enc}= \rho \left( \frac{4}{3} \pi r^3 \right)$\)
Hence, the electric field intensity becomes as follows :
\($E= \frac{\rho \left(\frac{4}{3} \pi r^3\right)}{4 \pi \epsilon_0 r^2}$\)
\($E =\frac{\rho r}{3 \epsilon_0}$\)
Thus, the electric field inside the sphere is given by :
\($\vec {E} = \frac{\rho \vec{r}}{3 \epsilon_0}$\)
an electron accelerated from rest through a voltage of 790 v enters a region of constant magnetic field. part a if the electron follows a circular path with a radius of 21 cm , what is the magnitude of the magnetic field? express your answer using two significant figures. b
The electron is accelerated through a potential difference of , so the kinetic energy gained by the electron is equal to its variation of electrical potential energy:
1/2mv²=eΔV
where
m is the electron mass
v is the final speed of the electron
e is the electron charge
is the potential difference
Re-arranging this equation, we can find the speed of the electron before entering the magnetic field:
v=√2eΔv/m=√2(1.6-10-19c)(790v)/9.1-10-31=1.66.10 m/s
Now the electron enters the magnetic field. The Lorentz force provides the centripetal force that keeps the electron in circular orbit:
evb=mv²/r
where B is the intensity of the magnetic field and r is the orbital radius. Since the radius is r=25 cm=0.25 m, we can re-arrange this equation to find B:
b=m/er =3.8.10 t
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1.2 m long spring with a spring force of 200.0 N/m, 12.0 kg mass is attached to it, find the length
of the spring after extension after the mass is attached.
(hint: F = -6X)
(1 Point)
A) 1.232 m
B) O 1.788 m
C) 02.112 m
D) 2.788 m
Answer: 1.232
Explanation:I remember having this as a hw and this was the answer correct me if I was wrong
From Hooke's law, the length of the spring after extension and after the mass is attached is 1.788 meters. Option B is the answer.
HOOKE'S LAWHooke's law state that in an elastic material, the force applied is directly proportional to the extension provided that the elastic limit is not exceeded.
Given that a 12.0 kg mass is attached to 1.2 m long spring with a spring constant of 200.0 N/m.
The given parameters are:
mass m = 12kgInitial length \(L_{1}\) = 1.2 mSpring constant K = 200 N/mExtension e = ?According to Hooke's law
F = Ke
But F = mg
mg = Ke
Substitute all the parameters into the formula to get extension e
12 x 9.8 = 200e
e = 117.6 / 200
e = 0.588 m
The length of the spring after extension and after the mass is attached will be
\(L_{2}\) = \(L_{1}\) + e
\(L_{2}\) = 1.2 + 0.588
\(L_{2}\) = 1.788 m
Therefore, the correct answer is option B because the length of the spring after extension and after the mass is attached is 1.788 meters.
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Can someone spell the word hi for me I’ll give you 30 points
Answer:
hi poop
Explanation:
"Hi"
its spelled with an H & an I :^
If the same elevator accelerates downwards
with an acceleration of 1.2 m/s
2
, what is the
upward force exerted by the elevator floor on
the passenger?
The upward force exerted by the elevator floor on the passenger is 7.6 times mass of the passenger.
What is force?A force in physics is an effect that has the power to alter an object's motion. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.
Given in question elevator accelerates downwards with an acceleration of 1.2 m/s². There is acceleration due to gravity working downward which is 9.8 m/s².
So, net acceleration due to gravity is given as 9.8 - 1.2 = 7.6 m/s²
The upward force exerted by the elevator floor on the passenger is mass times acceleration, 7.6 times mass of passenger.
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Radio waves are propagated through the interaction of:.
Answer:
Electric and magnetic fields:
Maxwell's equations tell us that
a changing magnetic field creates a changing electric field and
a changing electric field creates a changing magnetic field
5. An object travels with constant speed through 1km for one minutes and 20 seconds and accelerates with 0.125m/s² for 20 seconds, what is the total displacement? A) 1250 m B) 275 m C) 1275 m D) 1225m
Answer:
C) Total displacement = 1275 m or 1.275 km
Explanation:
We'll break this into two parts:
1) Displacement during constant speed, and
2) Displacement during the acceleration phase.
Constant Speed
The displacement for this segment is already stated: 1 km. But the information includes the time, which will allow us to calculate the speed of travel. We'll need this for the next phase of acceleration.
Distance = Speed x Time
Speed = Distance/Time
Time = 1 minute + 20 sec, or 80 sec.
Speed = 1 km/80 sec
Speed = 0.0125 km/sec
Since we'll be using meters (not km) in the next step, convert 0.0125 km/sec to m/sec with a conversion factor:
(0.0125 km/sec)*(1000m/1 km) = 12.5 m/sec
Acceleration Phase
The obect is moving at a speed of 12.5 m/sec (from above) and then accelerates at a rate of 0.125 m/sec^2 for 20 seconds.
The distance (s) an object travels during this acceleration (a) is gven by:
s = vi*t + (1/2)a*t^2,
where vi is the initial velocity (12.5 m/sec in this case), a is the acceleration (0.125 m/sec^2), and t is the time (20 seconds).
s = (12.5 m/sec)(20 sec) + (1/2)(0.125 m/sec^2)*(20 sec)^2
s = 275 meters
Now add the two distances:
1) Constant Speed Phase = 1000 m
2) Acceleration Phase = 275 m
Total displacement = 1275 m or 1.275 km
On Planet X, an astronaut has maximum walking speed of 1.9 m/s. The astronaut's legs are each 1.3 m long. What is the constant of acceleration due to gravity on Planet X?
A. 8.3 m/s2
B. 2.8 m/s2
C. 3.8 m/s2
D. 1.1 m/s2
Answer:
Acceleration due to Gravity:
Explanation:
Here g is acceleration due to gravity. So C. 3.8 m/s2
Which two statements are true about this chemical reaction that forms acid rain?
Statement that is true about chemical reaction that forms acid rain : b)The bonds that break are between N and O in HNO2and between O and H in HNO3.
What is acid rain?Acid rain is a acid deposition, which refers to the many ways in which acidity can move from atmosphere to Earth's surface. Acid deposition includes acidic rain as well as other forms of acidic wet deposition such as snow, sleet, hail, and fog.
HNO2 is less stable thus dissociates easily to HNO3 + NO + H2O and HNO3 is a strong acid. Therefore, when they react with H2O, they form acid rain.
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Note: The question given on the portal is incomplete. Here is the complete question.
Question: Which two statements are true about this chemical reaction that forms acid rain? 2NO2 + H2O--> HNO2 +HNO3
a) The bonds that form are between N and O in HNO2 between and between O and H in HNO3.
b)The bonds that break are between N and O in HNO2and between O and H in HNO3.
c)The bonds that break are between N and O in NO2 and between O and H in H2O.
d)The bonds that form are between N and O in NO2 and between O and H in H2O.
Answer: The correct two answers are :
1.) The BONDS that FORM are between N and O in HNO 2 and between O and H in HNO 3
2.) The BONDS that BREAK are between N and O in NO2 and between H and O in H2O
Explanation: I took the test.
What resultant force is required to accelerate a 1600kg automobile uniformly from 8m/s to 30m/s in 10s?
Answer:
3520
Explanation: Force = Mass x Acceleration [∴ or F = ma]. Given values. mass, m = 1600 kg; initial velocity, u = 8 m/s; final velocity, v = 30 m/s; time taken, t = 10 s.
I’m confuse like which two types of fields vibrate in light wave
Electromagnetic waves consists of alternate electrical and magnetic fields.
Light is a electromagnetic wave. Hence in light wave, electrical and magnetic fields vibrate.
please solve this in notebook and send please
Answer:
Amplitude: The maximum displacement of a Vibrating body from its central position.
Time period : The time taken by one complete vibration to pass a given point.
Frequency: The number of waves that pass a point in a particular amount of time.
Answer:
\( \fbox{ \sf{ \: Below \: in \: bold}}\)
Explanation:
\( \star{ \: \: \underline{ \sf{Amplitude}}} : \) The maximum displacement of a particle from its mean position in a wave is called amplitude of a wave. It occurs at crest and trough in a transverse wave and at compression and rarefaction in a longitudinal wave. It's SI unit is ' m '.
\( \star{ \underline{ \: \sf{ \: Time \: period}}} : \) The time taken by a wave to travel complete one cycle of a complete wave is called time period. It's unit is second. For example : if a sound wave takes two seconds to complete one cycle , it's time period is two seconds.
\( \star{ \underline{ \sf{ \: \: Frequency}}} : \) The number of complete waves , set up in a medium in one second is called frequency of the wave. The SI unit of frequency is hertz ( Hz ). For example , if a sound wave completes 15 compressions and 15 rarefactions in one second , it's frequency is 15 Hz. Kilohertz ( KHz ) and megahertz ( MHz ) are the higher units of frequency.
Hope I helped!
Best regards! :D
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