The shape of an apple is considered what

Answer: 7 kg

Explanation:

Answer:The answer is C

Explanation:

The waves are often used as a means to transfer digital information such as a text message or website is radio waves. The correct option is C.

Digital information generally consists of data that is created or prepared for electronic systems and devices such as computers, screens, calculators, communication devices. These information are stored by cloud.

The wave used for the same purpose is radio waves which has the high frequency range.

Thus, the correct option is C.

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Answer:

The correct option is;

D) Both objects exert the same magnitude of force on each other due to Newton's 3rd law

Explanation:

Newton's third law of motion states that for every action there is an equal and opposite reaction

Since the bowling ball is rolled down the alley while the pin is displaced at such a speed that it flew, we have that the velocity of the rolling ball, v₁ is less than the velocity of the flying pin v₂

Therefore, whereby force = Rate of change of momentum produced we have;

The change of momentum of the ball = m₁×(v₁ - v₁ₐ)

The change of momentum of the pin = m₂×(0 - v₂)

Hence since the pin change in movement (flight) was more suddenly than the slowing down of the ball, the action of the rolling ball is equal to the reaction of the flying pin.

Answer: frequency of 3.6 x 10^14 Hz

Explanation:

If someone have two waves, one with a frequency of 4.4 x 1010 Hz and one with a frequency of 3.6 x 1014 Hz, the one with higher frequency ( 3.6 × 10^14) will have the higher energy.

From electromagnetic spectrum,

E = hf

Where

E = energy

F = frequency

h = Planck constant

The one with higher frequency will have the higher energy since energy is directly proportional to the frequency.

The one with higher frequency ( 3.6 × 10^14) will have the highest energy.

Frequency is the number of oscillations per second in the sinusoidal wave.

If someone have two waves, one with a frequency of 4.4 x 10¹⁰ Hz and one with a frequency of 3.6 x 10¹⁴ Hz.

From electromagnetic spectrum, energy associated with the frequency is

E = hf

Where, E = energy, f = frequency and h = Planck constant

The Planck's constant is the constant value. The energy is directly proportional to the frequency.

Thus, The one with higher frequency will have the higher energy since energy is directly proportional to the frequency.

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Answer: find the answer in the explanation

Explanation: The potential energy in a circuit between two points is the workdone in taking units positive charge from one point to the other in the circuit. Its S.I unit is Joule.

Because voltage of a battery or cell in a circuit is the potential energy difference across its terminal

The potential energy difference between two points is one volt, if the workdone in taking one Coulomb of positive charge from one point to the other is one Joule.

Answer:

They are the same element.

Explanation:

Atom >>>>> Proton >>>> Neutron

A >>>>>>>> 8 >>>>>>>>> 10

B >>>>>>>> 8 >>>>>>>>> 12

From the table above we can see that both atoms have the same proton number.

Therefore, they are the same element because they have the same proton number which means that they have the same atomic number. The element in this case is existing as an isotope in that the atoms have the same proton number but different neutron number.

Answer:

i believe a

Explanation:

Answer:

The Answer is B

Explanation:

Hope this Helps :D

Answer:

Let the second medium be air (n₁=1)

The refractive index n₂ of the medium where first medium is air is found (a)

(a) n₂ = 2

Explanation:

Critical angle can be defined as the angle of incidence that provides the angle of refraction of 90°.

Refractive index of a medium can be defined as a number that describes that how fast a light will travel through that medium.

Critical angle and Refractive index are related by:

[tex]\theta_{critical}= sin^{-1}(\frac{n_1}{n_2})[/tex]

[tex]sin \theta_{critical}=\frac{n_1}{n_2}[/tex]

To find refractive index of medium with respect to air, substitute n₁=1 (Refractive index of air is 1)

Also θ(critical)=30°

Find n₂ :

[tex]sin30= \frac{1}{n_2}\\0.5=\frac{1}{n_2}\\n_2=\frac{1}{0.5}\\n_2=2[/tex]

Answer:

C

Explanation:

the electric field point radically away from the charge

Answer:

320N

Explanation:

Net force =w- AR

AR=w -force

AR=mg- ma

AR=80*9.8- 80*5.8

AR=784- 464

AR=320N

Answer:

lois is right because throwing the water balloon is exerting a force running is not

Answer:

the object has decreasing acceleration and increasing velocity

Answer:

An electrical current is an electrical charge flowing around a circuit. Carried by billions of tiny particles called electrons, the charge is already in the wires.

Explanation:

There are three basic conditions for the electric current flow is to be given below:-

Answer: C

the emission of electrons from a metal caused by light striking the metal

Explanation:

Photo means anything related to light in Physics and science generally.

Photoelectric effect explains the effect of light incident on metal surfaces by knocking out electrons on the metal surfaces.

The correct option is C

the emission of electrons from a metal caused by light striking the metal

Answer: sound intensity will decrease to the one - fourth of its initial value.

Explanation:

The relationship between sound intensity and the distance obeys inverse square law, where the intensity of sound is inversely proportional to the square of the distance. That is,

I = 1/ r^2

Where

I = sound intensity

r = distance.

If the distance from the source is doubled, sound intensity will decrease in value to the one - fourth of its initial value.

Answer:

all of the above

Explanation:

i study this kind of stuff in school

Answer:

4.5 Billion km :)

Explanation:

thats how it is

Answer:

About 3.8 billions miles from the Sun OR 4.82 kilometers

hope this helped!

Explanation:

Momentum = mass × velocity

p = mv

p = (120 kg) (30 m/s)

p = 3600 kg m/s

Given:

velocity, v = 30m/s

mass, m = 120kg

Therefore, momentum

p = mv

p = 120kg * 30m/s

p = 3600 kgm/s = [tex]3.6 * 10^3 kgms^{-1}[/tex]

A property of a moving body that the body has by virtue of its mass and motion and that is equal to the product of the body's mass and velocity broadly.

Momentum is a vector quantity, it has both magnitude and direction. Since momentum has a direction, it can be used to predict the resulting direction and speed of motion of objects after they collide.

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Answer:

The correct answer will be "1/16".

Explanation:

The force or distance between two substances in charge seems to be inversely proportional to the square of the size of the particles.  

The exerted force between "S" and "q" will be:

⇒  [tex]Fsq=\frac{{Q}'}{Q} 1^2[/tex] ...(equation 1)

The exerted force between "S" and "p" will be:

⇒  [tex]Fsp=\frac{{Q}'}{Q} 4^2[/tex] ...(equation 2)

Now,

On the comparison of "equation 1" and "equation 2", we get

⇒  [tex]\frac{1}{16}[/tex]

Answer:

a change from one state (solid or liquid or gas) to another without a change in chemical composition

Explanation:

Explanation:

From Solid to. Liquid to Gas A change of state is the change of a substance from one physical form to another. All changes of state are physical changes. The particles have different amounts of energy when the substance is in different states.

Answer:

add energy

Explanation:

bc adding heat is energy which can make water turn into gas.

Explanation:

No.  Centripetal force is a not a force itself, but rather a sum of forces.  From Newton's second law:

∑F = ma

∑F = m v²/r

So centripetal force does not get used on a free body diagram.

Answer:

The question is incomplete because the options are not given. We'll solve this question with the options.

There are two properties of negative charges which we have to consider to find the figure of its electrical field.

Firstly, for a negative charge, the electrical field lines are always directed radially outwards and they don't intersect.

Secondly, we know that similar charges repel each other, so there will be no electrical field present directly between these two negative charges. Electrical field line will be present between two charges only when there is a force of attraction.

Taking both of these facts into consideration, the electrical field line between two negatives is represented by the figure below.

Answer:

Figure C

Explanation:

Got it correct on Edmentum

Answer:

See Explanation.

Explanation:

Impact metamorphism:

The process in which a rock changes because of extreme heat and pressure caused by a meteorite collision with Earth.

Regional metamorphism:

The process in which buried rocks in a large area are changed by heat, pressure, and fluids.

Contact metamorphism:

The process in which a rock changes as a result

of heat generated from magma.

Dynamic metamorphism :

The process in which a rock changes due to

pressure directed on it.

The typing of metamorphism to its best definition should be explained below.

Impact metamorphism: The process where a rock changes due to extreme heat and pressure caused by a meteorite collision with Earth.

Regional metamorphism: The process where it should be buried rocks in a large area that should be changed by heat, pressure, and fluids.

Contact metamorphism: The process where a rock changes as a result

of heat generated from magma.

Dynamic metamorphism : The process where a rock changes due to

pressure directed on it.

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-- When you see the words "uniform speed", that means the car's speed is not changing.  

-- Right under those words in the picture, there's a note to remind you that "uniform speed" also means "acceleration is zero".

-- The whole key to this question is to find out if you remember that acceleration and net force always go together.  

.==> If there's net force, then there's acceleration.

.==> If there's acceleration, then there's net force.  

.==> If there's NO net force then there's NO acceleration.

.==> If there's no acceleration, then there's no net force.

-- In this picture, there's no acceleration, so there's no net force.

-- The driving force on the car is 2000N forward.

-- But the car's speed is not changing, so the net force on the car must be zero.

-- So that 'resisting' force pulling the car backwards must be 2000N. Then the net force on the car adds up to zero.

-- If the resisting force pulling the car backwards is not zero, then the net force on the car would not be zero, and the car's speed would be changing.

Answer:

wasting talent

Explanation:

Answer:

Upwards direction

Explanation:

The buoyancy force is caused by the pressure exerted by the fluid in which an object is immersed. The buoyancy force always points upwards because the pressure of a fluid increases with depth.

Answer:

Upwards direction

Explanation:

Answer:

(a) The density of the object is 316/343 × the density of the oil

(b) The fraction of oil displaced after immersing the object is 0.461 of the oil volume

Explanation:

(a) The volume, V of a cone of height, h and base diameter, D = 2×r is given by the following equation;

[tex]V = \dfrac{\pi r^{2} h}{3}[/tex]

The volume of the object is therefore;

[tex]\dfrac{\pi \times 4^{2} \times 14}{3} = 74\tfrac{2}{3}\pi \, cm^3[/tex]

Where 6 cm is above the oil level we have;

[tex]\dfrac{\pi \times \left (6 \times \dfrac{4}{14} \right )^{2} \times 6}{3} = 5\tfrac{43}{49}\pi \, cm^3[/tex] above the oil level

Therefore, volume of the oil displaced = [tex]68\tfrac{116}{147}\pi[/tex] cm³ = 216.11 cm³

The density of the object is thus;

[tex]\dfrac{68\tfrac{116}{147}\pi}{ 74\tfrac{2}{3}\pi} \times Density \ of \ the \ oil = \dfrac{316}{343} \right ) \times Density \ of \ the \ oil[/tex]

The density of the object = 316/343 × the density of the oil.

(b) The volume of the oil = 2 × Volume of the object = [tex]2 \times 74\tfrac{2}{3}\pi \, cm^3 = 149\tfrac{1}{3}\pi \, cm^3[/tex]

The fraction of the volume displaced, x, after immersing the object is given as follows;

[tex]x = \dfrac{68\tfrac{116}{147}\pi}{ 149\tfrac{1}{3}\pi} = \dfrac{158}{343} = 0.461[/tex]

The fraction of oil displaced after immersing the object = 0.461 of the volume of the oil

Answer:

A) 20J

Explanation:

Work = Force x Distance

Force = 50N

Distance = 0.4M

Work = 50 x 0.4 = 20J