Relationship between force and strength of electrical charge directly proportional whereas the relationship between force and distance is inversely proportional
Relationship between force, charges and distanceThe relationship between force and strength of electrical charge directly proportional to each other which means if one increases the other will automatically increases whereas the relationship between force and distance is inversely proportional which means that if one increases the other will decrease.
Doubling the strength of both charges at the same time affects the force between them because both charges are directly proportional to its force so we can conclude that relationship between force and strength of electrical charge directly proportional whereas the relationship between force and distance is inversely proportional.
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hello! how to do this?
Answer:
B)
Explanation:
please help me with this, This is very important for me
Answer:
(a) parallel circuit
(b) (i) ammeter (ii) current
Hope this helps!
Which of the following is not true about potential energy?
Select one:
a.
b.
C.
d.
Potential energy is stored energy.
Potential energy is related to position.
Potential energy is a scalar quantity.
Potential energy has direction.
Answer:
[tex]\huge\boxed{\sf Option \ D.}[/tex]
Explanation:
Potential Energy:
Energy stored due to the position of any object is usually known as the potential energy of the object.Type of Quantity:
Potential energy is a scalar quantity which means it is only defined by its magnitude and has no direction.Unit:
The unit of potential energy is joules.Types:
Gravitational potential energyElastic potential energyElectric potential energyNuclear potential energy[tex]\rule[225]{225}{2}[/tex]
Why do you think there are differences on how far two vehicles should be from each other depending on what types of vehicle they are? How does this promote road safety?
Answer:
to reduce the pace of accident
A transformer has 200.0 turns in its secondary coil and 120.0 turns in its primary coils. The primary coil is connected to a 80.00 V power supply. If 3.50 A flows in the primary coil, then how much current is there in the secondary coil
No.of primary turns/no.of secondary equal to current in primary /current in secondary therefore 200/120=3.50/C.in secondary =2.1A
Which of the following correctly arranges the planets by the size of their diameter in increasing order?
Uranus < Neptune < Mercury < Earth
Earth < Mercury < Neptune < Uranus
Mercury < Earth < Saturn < Jupiter
Jupiter < Saturn < Earth < Mercury
Answer:
Mercury<Venus<Earth<Mars<Jupiter< Saturn< Uranus<Neptune
Answer: The answer is C
Explanation: I took the test and got it right
4 "Find shelter in a building or a metal-topped vehicle (not a convertible), and close the windows. " Based on this safety tip, what can you conclude about the safety of cars during lightning? A All cars, regardless of type, will protect you from lightning B B Cars are less safe than buildings during lightning. The rubber tires of a car protect you from lightning. D a The metal roof of a car protects you from lightning.
Answer :- Option D
Explanation:-
Coz electric field inside a conductor is zero that's why we don't get electrocuted.
Hope it helps....
A compact disc has a radius of 6 cm. If the disc rotates about its axis at a constant angular speed of 5 rev/s, what is the total distance traveled by a point on the rim in 40 minutes
The total distance traveled is mathematically given as
d=4.5km
What is the total distance traveled?Question Parameters:
A compact disc has a radius of 6 cm.
the constant angular speed of 5 rev/s
time 40 min
Generally, the equation for the linear speed is mathematically given as
v=w*r
Therefore
v=10 pi * 6
v=60pi cm/s
In conclusion, the equation of the distance
distance = v*t
d=60pi * 2400
d=452389.342 cm
d=4.5km
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Which statements best describe half-lives of radioactive isotopes? Check all that apply.
The half-life varies depending on the isotope.
The half-life is the same for every isotope.
Half-lives are always only minutes long.
Half-lives range from fractions of a second to billions of years.
The half-life of a particular isotope is constant.
The half-life of a particular isotope changes constantly.
A,D,E
Answer:
A
Explanation:
half life is the time taken for a radioactive isotopes to dissociate
what is the speed of a wave has a wavelength of 0.5 m/s and a frequency of 2 hz?
Answer: The equation that relates wavelength and frequency for electromagnetic waves is: λν=c where λ is the wavelength, ν is the frequency and c is the speed of light.
10/0.5=20 meter.
Explanation:
The speed of a wave has a wavelength of 0.5 m/s and a frequency of 2 hz is 0.25 m.
What is wave ?Wave is is a disturbance in a medium that carries energy as well as momentum . wave is characterized by amplitude, wavelength and phase. Amplitude is the greatest distance that the particles are vibrating. especially a sound or radio wave, moves up and down. Amplitude is a measure of loudness of a sound wave. More amplitude means more loud is the sound wave.
Wavelength is the distance between two points on the wave which are in same phase. Phase is the position of a wave at a point at time t on a waveform.
There are two types of the wave longitudinal wave and transverse wave.
Longitudinal wave : in which, vibration of the medium (particle) is parallel to propagation of the wave. Sound wave is a longitudinal wave.
Transverse wave : in which, vibration of the medium (particle) is perpendicular to propagation of the wave. Light wave is a Transverse wave.
The relation between velocity, frequency and wavelength is,
c = λν
Where λ is wavelength, ν is frequency and c is velocity.
Given,
c = 0.5 m/s
ν = 2 hz
λ = ?
Putting all the values in the equation,
0.5 = 2λ
λ = 0.5/2 = 0.25 m
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Determine the Momentum of 1000 Kg car moving northward at 40 m/s .
40000 kg⋅m/s
momentum: mass * velocity
p = mv1000 * 4040000 kg⋅m/sQuestion :-
Determine the Momentum of 1000 Kg car moving northward at 40 m/s .Answer :-
Momentum of car is 40,000 Kg m/s .[tex] \rule {180pt} {2pt} [/tex]
Given :-
Mass = 1000 KgVelocity = 40 m/sTo Find :-
Momentum = ?Solution :-
As per the provided information in the given question, we have been given that the Mass of the car is 1000 Kg . Velocity of the car is given 40 m/s . And, we have been asked to calculate the Momentum of the car .
For calculating the Momentum , we will use the Formula :-
Momentum = Mass × VelocityTherefore , by Substituting the given values in the above Formula :-
⇒ Momentum = Mass × Velocity
⇒ Momentum = 1000 × 40
⇒ Momentum = 40000
Hence :-
Momentum = 40000 Kg m/s .[tex] \underline {\rule {180pt} {4pt}} [/tex]
What can we say about Gamma waves on
the electromagnetic spectrum?
Answer: Gamma-rays have the smallest wavelengths and the most energy of any other wave in the electromagnetic spectrum. These waves are generated by radioactive atoms and in nuclear explosions. Gamma-rays can kill living cells, a fact which medicine uses to its advantage, using gamma-rays to kill cancerous cells.
Explanation: :)
A lightweight plastic rod has a mass of 2.0 kg attached to one end and a mass of 2.5 kg attached to the other end. The rod has a length of 1.20 m. How far from the 2.0-kg mass should a string be attached to balance the rod
The distance from the 2.0 kg mass at which a string should be attached to balance the rod is 0.67 m.
Distance can be defined as the horizontal length between two points.
To calculate the distance at which the string must be attached to balance the rod, we use the formula below.
Formula:
m₁gx = m₂g(1.2-x)................. Equation 1From the question,
Given
m₁ = 2.0 kg m₂ = 2.5 kgx = Distance of the string from the 2.0 kg massg = Acceleration due to gravity.= 9.8 m/s²Substitute these values into equation 1
2(9.8)(x) = 2.5(9.8)(1.2-x)Solve for x
19.6x = 29.4-24.5xCollect like terms
19.6x+24.5x = 29.444.1x = 29.4x = 29.4/44.1x = 0.67 mHence, the distance from the 2.0 kg mass at which a string should be attached to balance the rod is 0.67 m.
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How to solve it? Plssss
Answer:
T1 + T2 cos 60 = 1000 cos 15 balancing x-forces
T1 + T2 / 2 = 966 (I)
1000 sin 15 + .866 T2 = 1200 balancing y-forces
259 + .866 T2 = 1200
T2 = 941 / .866 = 1087 value for T2
T1 + 543 = 966 using equation (I)
T1 = 423
At what degree is the Equator
located on the globe?
Answer:
0 degrees latitude
Explanation:
At 0 degrees latitude, the Equator is an invisible line that circles the Earth's center.
When a positively charged object is brought close to 2 metal spheres that are touching, what will happen to the electrons in the spheres?.
Answer:
Let's assume the metal spheres are solid metal, and not charged beforehand.
The premise are similar, but the effect changes depending if you are approching from the side, between the spheres (left image) or the front (right image). Let's image the charged object is the tip of the arrow in the drawing, and it's small enough to be considered a point
In either case, the electron cloud in the spheres will be affected by the electric field generated by the charge, and gets attracted towards it (since the charge is positive and the electrons have by definition negative charge), moving according to the blue lines. For as long as the charge is in place, the "grouping" of charges on one side and the absence of charges on the other will create an electric dipole with the positive charge away from the side the arrived and the negative on the opposite end of the diameter.
The interesting part happens the moment you split the two spheres.
In the left case will realign based on the field lines (remember that a single charge will generate a radial field) and the moment you remove the charge the electrons are no longer drawn to one end, and will eventually re-distribute on the whole sphere, canceling the dipole.
In the right case instead, the fact that the spheres were touching allows the electrons in one of the sphere to migrate to the other, generating a net positive charge in the far sphere, and a net negative charge in the close one. if you separate the two spheres before removing the charge, the electrons are still "trapped" in the leftmost sphere, thus keeping it charged even after the original source is removed from the system.
If Felix jumped from an even greater distance, do you think the force on him would be different? If so, how?
Help, This is my last question
Answer:
it would be the same because they are equal
PLEASE HELP ME
You are moving 6 books, each weighing 11 N, to a shelf 0. 8 m higher. Do you do more work by moving all 6 books at once, or by moving one book at a time?
Answer:
word done = fore * distance moved by the force, so 11n * 0.8=8.8j then 8.8 * 6=52.8j
but all the books at ones means, 6*11=66N
and 66*0.8 = 52.8j
Explanation:
The work done is equal..
1. During the experiment with the hot metal block in cold water, in which direction did the thermal energy flow? By what method did the energy
flow?
1
When there is a temperature difference/Gradient, heat flows from a region of high concentration to region of low concentration.
Energy and Heat/Mass TransferThermal energy flow from region of higher temperature gradient to region of low temperature gradient till equilibrium is reached.
When the hot metal is places in a cold water bath, there will be a temperature difference and by conduction(water conducts heat) the heat will travel in the water medium and circulate till equilibrium
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Hello everyone I would like your help on this exercise because the physics I have a little difficulty. Here is the statement:
A child launches a blue cart of mass m= 150 g in A of altitude zA= 0 on an inclined plane of an angle α = 30° with respect to the horizontal. The cart then climbs to point C where it stops before descending in reverse. This blue cart is not subject to any frictional force between A and C.
1°-What are the forces acting on the car during its journey from A to C ?
2°-What can we say about the mechanical energy of the car? Why?
3°-Determine the velocity vA with which the child launches the cart in Asknowing that the point C is at the altitude zC= 0,80 m
The child then launches a red cart of the same mass as the blue one with a speed of 4.0 m/s. This car reaches only a height of 0.55 m.
4°-Show that the mechanical energy for this red car is not conserved.
5°-Assuming that the frictional force exerted on this car during all its journey is constant, calculate the work of this force noted f.
6°-Determine then the value of f.
Data: Gravity field: g= 9,81 N/kg
Answer:
Fn = m g cos 30 = .15 * 9.81 * .866 = 1.27 N force of plane on car
Fp = m g sin 30 = .15 * 9.81 * 1/2 = .736 N force along plane
m g h = W = potential energy of car = original mechanical energy
1/2 m v^2 = m g h equating PE and KE
v^2 = 2 g h = 2 * 9.81 * .8
v = 3.96 m/s original speed of blue cart
Launch energy of red cart
1/2 m v^2 = .15 / 2 * 16 = 1.2 J launch energy of red cart
m g h = .15 * 9.81 * .55 = .81 J potential energy of red cart
Wf = (1.2 -.81) J = .39 J work done against friction
What is the power of a machine that transfers 15,000J of energy in 1 minute?
Answer:
answer is 250 W
Explanation:
W=P * t
t=60s
W= 15000J
15000= P * 60
P= 15000/60
P= 250W. (SI unit of power Watt)
The power of a machine is the rate of energy or work done by the machine. The power for 15000 J of energy in 1 minute is 250 W.
What is power?Power is a physical quantity that describes the rate of work done or energy of on an object. The work done is a vector quantity having magnitude and direction. Whereas, power is a scalar quantity.
When a force applied on a body makes its displaced, the force is said to be done work on the body. When the body do work by a restoring force then work is said to done by the body.
Work done is the product of power and time.
Given that, work done = 15000 J
time = 1 minute = 60 s
power = 15000 J /60 s = 250 W.
Therefore, the power of the machine is 250 W.
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A website is having a sale, and all items are 25% off the original price, p
Which expressions can be used to find the price of an item after the discount?
Select all that apply
Α.
0.75
B
1.25
CP_25
DP - 0.25
E 001P x 75
Felix made a chart listing the uses for two types of mirrors. A 2 column by 2 row table. Column 1 is titled X and contains the following entries: Used as side view mirrors on cars, Used to help people see traffic around blind corners. Column 2 is titled Y and contains the following entries: Used in dental instruments, Used in telescopes to produce enlarged images Which headings belong in the chart? X: Plane Y: Convex X: Concave Y: Plane X: Convex Y: Concave X: Convex Y: Plane.
Answer:
X: convex Y: Concave
Explanation:
Just got it right
Find the kinetic energy of a body of mass 2 kg moving with a speed of 10 ms^-1 .
Question :-
Find the Kinetic Energy of a body of Mass 2 kg moving with a Speed of [tex] \bf{10 \: {ms}^{ - 1} } [/tex] .Answer :-
Kinetic Energy is 100 Joule .Explanation :-
As per the provided information in the given question, we have been given that the Mass of the body is 2 kg . Speed of the body is given [tex] \bf{10 \: {ms}^{ - 1} } [/tex] . And, we have been asked to calculate the Kinetic Energy .
For calculating the Kinetic Energy , we will use the Formula :-
[tex] \bigstar \: \: \boxed{ \sf{ \: Kinetic \: Energy \: = \: \dfrac{1}{2} \: \times \: {mv}^{2} \: }} \\ [/tex]
Where ,
M denotes to the MassV denotes to the SpeedTherefore , by Substituting the given values in the above Formula :-
[tex] \longmapsto \: \: \sf{ Kinetic \: Energy \: = \: \dfrac{1}{2} \: \times \: {m \: \times \: v}^{2} } \\ [/tex]
[tex] \longmapsto \: \: \sf{Kinetic \: Energy \: = \: \dfrac{1}{2} \: \times \: 2 \: \times \: {10}^{2} } \\ [/tex]
[tex] \longmapsto \: \: \sf{Kinetic \: Energy \: = \: \dfrac{1}{2} \: \times \: 2 \: \times \: 100 } \\ [/tex]
[tex] \longmapsto \: \: \sf{Kinetic \: Energy \: = \: \dfrac{1 \: \times \: 2 \: \times \: 100}{2}} \\ [/tex]
[tex] \longmapsto \: \: {\textbf {\textsf {Kinetic \: Energy \: = \: 100 \: Joule }}} [/tex]
[tex] \underline {\rule {180pt} {4pt}} [/tex]
The kinetic energy of the body with the given value of mass travelling at the given speed is 100 Joules.
What is Kinetic Energy?Kinetic energy is simply a form of energy a particle or object possesses due to its motion.
It is expressed as;
K = (1/2)mv²
Where m is mass of the object and v is its velocity.
Given the data in the question;
Mass of the body m = 2kgVelocity v = 10ms⁻¹Kinetic energy of the train K = ?We substitute our given values into the above expression to determine the kinetic energy of the body.
K = (1/2)mv²
K = (1/2) × 2kg × (10ms⁻¹)²
K = 0.5 × 2kg × 100m²s⁻¹
K = 100kgm²s⁻¹
K = 100J
Therefore, the kinetic energy of the body with the given value of mass travelling at the given speed is 100 Joules.
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a slope of length 50m rises to height of 10m above the ground .An effort of 100N is needed to push a 250N object up the ramp.calculate a.AMA b.VR c.efficiency
Answer:
Actual mechanical advantage = force out / force in
250 N / 100 N = 2.5 force out is 2.5 X force provided
250 N * 10 m = 2500 Joules work output
100 N * 50 m = 5000 Joules work input
Efficiency is 2500 / 5000 = 50 %
Not sure what is meant by VR
Write a poem about how Earth's rotation causes day and night. Be sure to use
these terms: rotate, axis, sun, move, and Earth. use 16 lines
Answer:
Always on the move
Nothing stays the same
The sun comes and goes
The night you can never escape
Nothing can last for ever
Everything we know rotates
I thought this would be more clever
But it's late and I don't know what else to say
Those were eight lines only
Counting lines makes you lonely
Sixteen is a big number
I feel like I'm going under
It's always daytime somewhere
But it will never be forever
I move in circles
This poem is over
Explanation:
Sorry I thought it would end up better than this
2. A 60-nc point charge is located at the center of a 'pi cube of side length m What is the electric flux through each of the faces of the cube?
Answer:
Bağışlayın, bəzi problemlərim olduğu üçün bunu edirəm.
In which does sound travel fastest? Question 8 options: solids liquids gases plasma.
Sound travels fastest in solids. A sound is a vibration that travels in a longitudinal direction through a medium in the form of a mechanical wave.
What is sound?A sound is a vibration that travels in a longitudinal direction through a medium in the form of a mechanical wave.
It can propagate through a solid, a liquid, or a gas as its medium. Solids go the fastest, liquids are slower, and gases are the slowest.
Sound travels the quickest through a solid because the molecules are packed together densely, allowing sound waves to leap from one molecule to the next more quickly.
Because the molecules in solids are packed the tightest, sound travels the quickest through them, whereas sound travels the slowest through gases.
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Answer:
solids
Explanation:
how would the heating curve for glass be different from the heating curve for water
Answer:
The heating curve for glass would be different from the heating curve for water because water has a strange behavior while glass also has a strange behavior but is different because it lacks the repeating crystalline structure of solids like ice, or water. Glass becomes soft and impressionable as temperature increases.
Since glass lacks the repetitive crystalline structure present in solids like ice or water, its strange behavior differs from that of glass when heated. This is because glass has a unique, strange behavior than water. As temperature rises, glass becomes brittle and impressionable.
What is Heat?A difference in temperature causes energy to flow from one body to another, recognized as heat. Energy is transferred, or heat flows, when two substances of different temperatures are brought together. The hotter body goes to the cold.
Typically, though not always, this energy transfer causes the temperature of the region of lower temperature to rise and the temperature of the warmer object to fall. It is possible for a substance to absorb heat without increasing its temperature by migrating from one physical state (or phase) to another, such as melting, sublimation, boiling, or shifting from one solid form to the other.
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If you hold a heavy weight over your head, the work you do __________. Is less than zero is greater than zero is converted into chemical energy Is zero. Is converted into potential energy
If you hold a heavy weight over your head, the work you do is Is converted into potential energy.
What is Work done?Work is said to be done when the applied force displaces an object over a given distance.
Work - energy theoremWork energy theorem states that, the work done on object is equal to change in mechanical energy of the object.
When an object is raised over a given distance the work done is equal to the potential energy of the object given as;
W = P.E = mgh
Thus, If you hold a heavy weight over your head, the work you do is Is converted into potential energy.
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