Types of water with "Multiple" applications include reservoirs that generate power, canals that are used for transportation, as well as lakes that are utilized for recreation.
Explain the term reservoirs?A reservoir is a man-made lake used to store water. The majority of reservoirs are created by building dams across rivers.
A naturally lake whose outflow has been blocked to regulate the water level can likewise be converted into a reservoir.Flood risk control is reservoirs' most important function. Reservoirs store water during periods of heavy rain, lowering the risk of flooding, then gradually release the water over the ensuing weeks and months.Using the potential energy of water to produce electricity, a hydroelectric reservoir is a sizable gathering of water behind the same hydroelectric dam. The dam holds back some of this water, and when energy is needed, a little amount is permitted to flow through the base of the dam.Thus, types of water with "Multiple" applications include reservoirs that generate power, canals that are used for transportation, as well as lakes that are utilized for recreation.
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The complete question is-
reservoirs used to produce electricity, canals used for transportation, and lakes used for recreation are examples of water with ______ uses.
if sunlight were green instead of white, the most comfortable color to wear on a cold day would be
If sunlight were green instead of white, the most comfortable color to wear on a cold day would be red color.
What is the radiation of light?
The radiation of light can be defined as an energy of light that travels in the form of electromagnetic waves.
Light absorption is a process by which light is absorbed and converted into energy.
The radiation of light is the opposite of absorption of light.
Black materials are known for their excellent absorption of sunlight while the white materials are known for their excellent reflection or radiation of sunlight.
In a color wheel, the white is the opposite of black light. Also the red light is the opposite of green light.
Thus, the color of material that will perfectly oppose the green light would be red color or light, because in the color wheel the opposite of white color is black and the opposite of green color is red color.
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You make yourself and your friend a cup of hot chocolate and add vanilla ice cream. You quickly enjoy yours, but your friend takes a long time to come, so you get to observe theirs as a science experiment.
In what direction does the heat flow? (2 points)
Describe how the kinetic energy of the hot chocolate changes once you add the ice cream. (2 points)
How does the kinetic energy of the ice cream change once you put it in the hot chocolate? (2 points)
What happens to the temperature of each substance? Be specific. (2 points)
When will the temperature of the ice cream and the hot chocolate stop changing? (2 points)
Answer:
How does the kinetic energy of the ice cream change once you put it in the hot chocolate?
Explanation: ice cream is cold when the hot chocolate is hot
Answer:
Explanation:
Heat always flows from HOT to COLD.
KE of hot chocolate decreases.
KE of ice cream increases.
Temp. of hot chocolate decreases (it cools down), temp. of ice cream increases (it warms up).
Temp. of each will stop changing when the 2 substances reach equilibrium (no more flow of heat).
you are looking down at a loop and there is a magnet below the loop with the north pole facing you. as the magnet falls away from you, which way does the induced current flow in the loop?
As the magnet falls away from you the direction of induced current flow anticlockwise in loop.
Suppose we run it above the input to the coil. It is far away so there is no flux . As the magnet descends and approaches the entrance to the coil, part of the magnetic field from the magnet passes through the top few imaginary disks of the coil. The time-varying flux induces a certain EMF. This is the initial rise in the red part of the diagram. As the magnet continues to descend and enter the coil, more of its magnetic field weaves through the imaginary disks in the coil, so as it moves, the time rate of change of the total flux increases, so the EMF rises. Note that the field lines above and below the bar magnet point in the same direction.At some point the rod reaches the center of the coil. At this point, the amount of flux added to the upper half of the coil by the small movement of the magnet equals the amount of flux removed from the lower half. Therefore, at this point the EMF is zero. This is the middle point of the diagram where the EMF crosses the horizontal axis. The descending part of the red part is only an approximation to the middle part of the coil.[tex]d X E=-\frac{dM}{dT}[/tex]
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an object is acted on by a single nonzero force of magnitude f. (a) is it possible for the object to have zero acceleration a? (b) is it possible for the object to have zero angular accelera- tion a? (c) is it possible for the object to be in mechanical equilibrium?
An object is acted on by a single non zero force of magnitude f will have zero acceleration , angular acceleration and also in mechanical equilibrium.
The force adds velocity per unit of time in the force's direction, accelerating the object in proportion to its inertial mass. The acceleration that results depends on the object's mass: the less massive the object, the greater the acceleration; the more massive the object, the less the acceleration. One kilogram of mass is affected by a force of one newton, which on Earth results in an acceleration of 9.8 meters per second. However, if the object weighs twice as much (2 kg), a force of 1 Newton only generates 4.9 m/s2, or half as much acceleration.The initial motion of the object is altered by this force in accordance with the force. When this force is applied for the first time to an object that was at rest, the object accelerates in the force's direction. When a force is applied to an object that is already moving at some speed in a particular direction (and there is no other force at that time), depending on how the force's direction compares to the direction of motion already being carried out, the object's velocity will either increase or decrease.To study more on mechanical equilibrium -
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the cessna cardinal, a single-engine light plane, has a wing area of 16.2 m2 and an aspect ratio of 7.31. assume the span efficiency factor is 0.62. if the airplane is flying at standard sea-level conditions with a velocity of 200 km/h, what is the induced drag when the total weight is 9800 n?
The cessna cardinal, a single-engine light plane, has a wing area of 16.2 m2 and an aspect ratio of 7.31 with span efficiency factor of 0.62 then the induced drag when the total weight is 9800N is 29.951N
Given wing area (A) = 16.2m^2
Aspect ratio (r) = 7.31
efficiency factor (e) = 0.62
Weight of plane (W) = 9800N
velocity of airplane (v) = 200km/h = 200x5/18 = 55.5m/s
Dynamic pressure (p) = 1/2ρv^2 where ρ is density of plane = 1.225
p = 1/2x1.225x55.5x55.5 = 1886.6
Lift coefficient Cl = W/pxA = W/1/2ρv^2A where A is the area of wing
Cl = 9800/1886.6x16.2 = 0.32
Induced drag coefficient (Cd) = Cl^2/πer^2 = 0.32x0.32/πx0.62x7.31x7.31 = 0.98x10-3
Induced drag (d) = pxAxCd = 1886.6x16.2x0.98x10-3 = 29.951N
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a satellite is orbiting the earth at an altitude of 290 km. what is the approximate size of the smallest object on earth that an astronaut in the satellite can resolve if the diameter of her pupil is 5.00 mm and the wavelength of light is assumed to be 490 nm?
34.672 m is the approximate size of the smallest object on earth that an astronaut in the satellite can resolve.
L = satellite is orbiting the earth at an altitude of 290 × [tex]10^{3}[/tex] m
λ = wavelength of light is 4.90 × [tex]10^{-7}[/tex] m
d = diameter of her pupil is 5 × [tex]10^{-3}[/tex] m
θ = 1.22 × λ/d= y/L
So, y = 1.22× (λ/d) × L
y = 1.22× (4.90 × [tex]10^{-7}[/tex] m /5 × [tex]10^{-3}[/tex] m) × 290 × [tex]10^{3}[/tex] m
y = 34.672 m
Hence, 34.672 m is the approximate size of the smallest object on earth that an astronaut in the satellite can resolve.
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The metric system is based on powers of ten. What is the advantage to such a system?
After metric unit conversion, a measurement in the metric system that is represented by a rational number stays that way.
Several concepts have been recognised as a result of the historical development of metric systems. A single basic unit of measurement expresses each of nature's essential dimensions. Instead of replicating actual artefacts, the definition of base units is increasingly being derived from natural principles. Units derived from the base units are used for values deriving from the system's fundamental base units; for instance, the square metre serves as the derived unit for area, a quantity deriving from length. These derived units are coherent, which implies that they don't include any empirical elements and solely include the products of the powers of the base units.
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when a weight w is hanging from a light vertical string, the speed of pulses on the string is v. if a second weight w is added without stretching the string, the speed of pulses on this string will now become
It is false to say that speed of pulse remains v after adding the second weight w on the vertical string.
What is vertical string?As a result, the linear thicknesses of the two threads affect the string's velocity. Linear density is defined as the mass / unit length. String mass divided by string length equals linear density (m/l). The strain of the strings affects the string's wave velocity as well.
Briefing:In a string, the speed of the transverse wave v is determined by:
v=√T / √μ
where,
T represents the tension in the string
μ represents the linear mass density defined for the string
Currently, given the circumstance,
When weight (W) is suspended from a thin vertical string, the wave's velocity (V) is:
v=√W / √μ ----(eq1)
The wave's speed changes to v when a weight of W is added, as follows:
v′ = √2W /√μ -----(eq2)
After comparing eq1 and eq2, we observe that
The speed will rise by around two times the previous speed after adding the same amount of weight to the specified light string.
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consider two planets in space that gravitationally attract each other. if the mass of both planets is doubled, and the distance between them is also doubled, then the forces between them is * 1 point captionless image a)one quarter b)half as much c)twice as much d)four times as much e)none of these
If the mass of both planets is doubled, and the distance between them is also doubled, then the forces between them is are twice as much.
In physics, a force is a power that can change the motion of an item. A force can purpose an object with mass to alternate its pace. Pressure also can be described intuitively as a push or a pull. A force has both value and path, making it a vector quantity.
Force is a push or a pull and it affects our daily lives because, without force, people might not be capable of opening and near stuff or lifting up their arms or legs.
Variety of Forces :
* Muscular Forces, muscular tissues feature to produce an ensuing force which is referred to as 'muscular force'.
* Frictional Forces, while an item modifications its national motion, 'frictional pressure' acts upon it.
* Carried out pressure.
* Tension force.
* Spring force.
* Gravitational pressure.
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Which of the following is one of the principles that the theory of relativity is based upon
The measurement of distance is the same for everyone.
The passage of time is the same for everyone.
The acceleration of gravity is the same for everyone.
The laws of physics (i.e. laws of nature) are the same for everyone.
c) The acceleration of gravity is the same for everyone, governs the theory of relativity.
The theory replaced a 200-year-old theory of mechanics principally developed by Isaac Newton and revolutionized theoretical physics and astronomy during the 20th century. It introduced ideas like simultaneity, kinematic and gravitational time dilation, length contraction, and 4-dimensional spacetime as a unified entity of space and time. Relativity brought us the nuclear age while also advancing our understanding of elementary particles and their basic interactions. Cosmology and astrophysics predicted remarkable astronomical phenomena like neutron stars, black holes, and gravitational waves with relativity.
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the 30 kg rod is released from rest when theta equal 0 degree. the spring is unstretched when theta equal 0 degree. find the angular velocity of the rod when theta equal 30 degrees. i
The angular velocity of the rod with some angle is 6.60rad/s.
Work Energy Theorem: It states that the work done by a force acting on an object is equal to the change in the kinetic energy of the object. H. W=Ki-KParallel Axis Theorem: The moment of inertia of a body about an axis parallel to the body is equal to the sum of the moments of inertia of the body about the axis through the center and the product of the body is the mass of the multiplied by the square of the distance between the two axes.I= lcom +Mx², where l is the total body moment of inertia, lcom is the moment of inertia about the center of mass, M is the mass, and x is the vertical distance from the output axis, center of gravity.[tex]g=\frac{3w^2}{4}[/tex]9.8=3 w²/4
w=6.60rad/s
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the amplitude of a lightly damped oscillator decreases by 3.0% during each cycle. what percentage of the mechanical energy of the osc
The percentage of the mechanical energy of the oscillation is 6%.
The amplitude of a lightly damped oscillator decreases by 3.0% during each cycle. we need to calculate the percentage of the mechanical energy of the oscillation.
Since the energy is proportional to the amplitude squared, we find the fractional change (assumed small) is,
(E' - E)/E ≈ dE/E = dx²/x² = 2xdx/x² = 2dx/x
Thus, if we approximate the fractional change in x as dx/x
, then the above calculation shows that multiplying this by 2 should give the fractional energy change. So, if x decreases by 3%, then E must decrease by 6.0%
Therefore, if the the amplitude of a lightly damped oscillator decreases by 3.0% during each cycle the percentage of the mechanical energy of the oscillation is 6%.
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Which of the following is true about electricity and magnetism?
The creation of an electric current or magnetic field depends on the movement of electrons.
Magnets can induce electric currents only when using the north pole of the magnet.
The free flow of protons down a copper wire causes an electric current that can create a magnetic field.
Attractive and repulsive forces between charged particles prevent them from creating electric currents or magnetic fields.
Answer: A
The creation of an electric current or magnetic field depends on the movement of electrons.
Explanation:
light from an argon laser strikes a diffraction grating that has 5660 lines/cm. the central and first-order principal maxima are separated by 0.562 m on a wall 1.47 m from the grating. find the wavelength of the laser light.
On a wall 1.47 m away from the grating, the central and first-order principal maxima are separated by 0.562 m. The laser light's wavelength is 674 nm.
The principal maxima are defined by dsinθ=mλ, where m=0,1,2,…
For m=1,λ=dsinθ
The angle between the central maximum (m=0) and the first order maxima (m=1) in this case is called. The value of can be calculated using the data provided on the separation between maxima and the grating-to-screen distance:
tanθ= 0.562/1.47m =0.382
So θ=22.457°
and sinθ=0.382
The distance between grating "slits" equals the reciprocal of the number of grating lines per centimeter
d= 1/5660 cm⁻¹ = 0.0001766784=1.766*10³ nm
The wavelength is λ=dsinθ=(1.766*10³nm)(0.382)=674nm
A waveform signal's wavelength is defined as the separation between two identical points (adjacent crests) in adjacent cycles as the signal travels through space or along a wire. This length in wireless systems is typically expressed in metres (m), centimeters (cm), or millimeters (mm) (mm). It is more common to specify the wavelength in nanometers (nm), which are units of 10-9 m, or angstroms (), which are units of 10-10 m, for infrared (IR), visible light (VL), ultraviolet (UV), and gamma radiation ().
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the efficiency of a solar cell is defined as the percentage of the total energy input that does useful work.
The proportion of the total energy input that is put to use in a solar cell is known as its efficiency, so this is a true statement.
What is a Solar cell?A solar cell, also known as a photovoltaic cell, is a type of electronic device that uses the photovoltaic effect to convert light energy directly into electricity.
What is Energy?Energy is the ability to perform work. It could exist in several different forms, such as potential, kinetic, thermal, electrical, chemical, radioactive, etc. Additionally, there is heat and work, that is energy being transferred from one body to another. It is always assigned based on its nature once it has been transmitted. Thus, heat transmitted may manifest as thermal energy while work performed may result in mechanical energy.
Hence, the proportion of the total energy input that is put to use in a solar cell is known as its efficiency, so this is a true statement.
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g find the net electric force that the two charges would exert on an electron placed at point on the x-axis at x = 0.200 m.express your answer with the appropriate units. enter positive value if the force is in the positive x-direction and negative value if the force is in the negative x-direction.
The net electric field on charges are -537 N/C.
The electric field is a vector magnitude, so we must add them as vectors. The electric field equation is
E = k q / r²
Where k= Coulomb constant that you are worth 8.99 * 10⁹ N m²/C², that the magnitude of the load and r = distance between the load and the test load.
Let's find the field created by each charge at the point x = 0.200 m
Charge 1
This charge is at the origin, the distance is
x₁ = 0.200 m
q₁ = 3 nC = 3 * 10^-9 C
E1 = k q₁ / x₁²
E1 = 8.99 * 10⁹ * 3* 10⁻⁹ / 0.2²
E1 = 674.25 N / C
Charge 2
This load is the point a = 0.800 m, so the distance to the test charge at 0.200 m
x₂ = 0.800 - 0.200
x₂ = 0.600 m
q₂ = -5.5 nC = -5.5 * 10-9 C
E2 = 8.99 * 10⁹ * 5.5 * 10⁻⁹ / 0.600²
E2 = 137.35 N / C
We already have the value of each field, add them vectorially, remember that if the charges are of the same sign they repel and if they are of the opposite sign they attract, the field E1 is directed to the left and the field E2 is directed to the right.
Et = -E1 + E2
Et = -674.25 + 137.25
Et = -537 N / C
The field is headed to the left.
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What are the units used in F = ma?
Question 1 options:
A. Midichlorians for force, venator-class star destroyers for mass, and parsecs per second squared for acceleration.
B. Horsepower for force, pounds for mass, and miles per hour for acceleration.
C. Newtons for force, kilograms for mass, and meters per second squared for acceleration.
D. Foot pounds of torque for force, grams for mass, and kilometers per hour for acceleration.
Answer:
Newtowns for force , kg for mass , and meters per second
Iron is made up of atoms. The thermal expansion of solid iron is caused by ___.
A. increasing the amplitude of vibration of the iron atoms
B. increasing the distance between equilibrium positions for the vibrating iron atoms
C. the breaking of bonds between the iron atoms
Iron is made up of atoms, the thermal expansion of solid iron is caused by C. the breaking of bonds between the iron atoms.
What is thermal expansion?Thermal expansion can be described as the tendency of matter to change in shape, volume, and area in response to a change in temperature.
It should be noted that the temperature can be seen as a monotonic function of the average molecular kinetic energy of a substance , however When a substance is heated, the Kinetic energy that is present in the molecules will increases then they can start to vibrating more and usually maintain a greater average separation and this process will result to expoansion because bond will be broken.
Therefore, option C is correct.
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two strings are adjusted to vibrate at exactly 200 hz. then the tension in one string is increased slightly. afterward, three beats per second are heard when the strings vibrate at the same time. what is the new frequency of the string that was tightened?
The new frequency of the tightened string is 201.5 Hz.
Let's assume that the strings both start out vibrating at 200 Hz.
The frequency of the tightened string must be slightly higher than 200 Hz in order to produce 3 beats per second. We can calculate the new frequency of the tightened string by using the formula:
Frequency of the tightened string = (frequency of the other string) +/- (3 beats/second ÷ 2)
so,
Frequency of tightened string = 200 Hz +/- (3 beats/second ÷ 2)
Frequency of tightened string = 200 Hz +/- 1.5 Hz
Therefore, the new frequency of the tightened string is 201.5 Hz.
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Which of the following examples describes a situation where a car is experiencing a net force?
A - The car is floating on a stationary boat.
B - The car is moving at constant speed.
C - The car is stopped on a hill
D - The car is making a gradual turn.
(Option C) The car is stopped on a hill. When a car is stopped on a hill, a net force is acting on the car due to gravity.
The example that describes a situation where a car is experiencing a net force is:Option C. The car is stopped on a hillWhen a car is stopped on a hill, it is experiencing a net force due to gravity. This force is the result of the downward pull of gravity and the car's brakes, which counteract the gravity and keep the car from rolling down the hill. The car is essentially in a state of equilibrium since the opposing forces of gravity and the brakes are equal and opposite, meaning the net force on the car is zero. However, if the brakes were to suddenly fail, then the net force on the car would be the downward pull of gravity, causing the car to roll down the hill.
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what would happen to the planets in a solar system where the central star did not have a strong wind?
The planet's orbits would move inward due to the drag that the gas inside the solar nebula would cause.
A planet's orbit may alter as a result of gravitational collisions with several planetesimals. The buildup of angular momentum transfers during contacts between planetesimals and a planet leads to planetesimal-driven migration.
Although the dust & gases inside a nebula are widely dispersed, gravity can start to gradually gather some of the gas and dust clumps. These clusters' gravitational pull increases as they become larger and larger. The mass of gas and dust eventually grows so large that gravity causes it to collapse.
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an ideal gas is confined to a container at a temperature of 350 k. 1) what is the average kinetic energy of an atom of the gas?
The pendulum will temporarily come to rest when it reaches its highest position for a very brief period of time. The pendulum's potential energy is at its highest point at this instant.
What form does the energy take when the mass moves past the equilibrium position in the system?
Elastic potential energy is transformed into kinetic energy as soon as the item begins to move; at equilibrium, only kinetic energy remains.
Which point has the most potential energy?
When the most energy is stored, potential energy is at its highest. When something rises to its greatest point in the air before dropping, when a rollercoaster is about to descend, or when a rubber band is stretched as far before it breaks, are examples of this. After then, potential energy is changed into kinetic energy.
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an empty storage tank has a volume of 8,190 ft3. what is the buoyant force exerted on it by the air?
The buoyant force exerted in storage tank of volume 8190 ft^3 by the air at STP is 2783.95 N
Given,
Volume of tank = [tex]8190 ft^3[/tex]
The buoyant force is nothing but the upward force exerted on object immersed entirely or partially in a fluid. Buoyant force is also called Upthrust force . A object submerged in a fluid appears to lose weight, i.e. appears to be lighter, due to buoyant force.
Assume that the air is at 0°C and 1 atmospheric pressure.
Buoyant force can be calculated by formula,
[tex]F_B=\rho vg[/tex]
where,
[tex]\rho[/tex] = fluid density of air = [tex]1.225 kg /m^3[/tex]
g=gravitational acceleration = [tex]9.8 m/s^2[/tex]
v=volume in meters = [tex]8190 ft^3 = 231.9m^3[/tex]
[tex]F_B=1.225*231.9*9.8=2783.9N[/tex]
Thus, the buoyant force exerted in tank by air is 2783.N
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in which scenario would strict liability most likely apply? an airplane's brakes fail in freezing weather. a dishwasher fails to fully clean the dishes. a lightbulb burns out prematurely. a car's radio sometimes stops working.
The scenario "An airplane's brakes fail in freezing weather" is considered under strict liability.
Strict liability is a concept used in both civil and criminal law that holds a defendant accountable for their actions regardless of their intent at the time the action is committed.
It means that someone could be held responsible for a result that they did not intend.
In other words, regardless of criminal intent or possible negligence, a person is strictly liable simply by engaging in certain behaviours.
In business, strict liability refers to when liability is not based on negligence or intent to harm. For example, if you were the headmaster of a public school and hired a teacher with no teaching degree or experience, and that teacher made a mistake and the school was sued, you would be held completely liable.
Thus, from the given statements, the statement " an airplane's brakes fail in freezing weather." should apply for strict liability.
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are the radiating electric field lines around a charged particle straight lines when the particle moves at constant velocity?
No, the radiating electric field lines are not around a charged particle straight lines when the particle moves at constant velocity.
An electric property that is connected with any location in space where a charge exists in any form is electric field. The electric force per unit charge is also termed as electric field. The formula for electric field is: E=F/Q
Where, The electric field is denoted by E, force by F and charge is Q.
When a charged particle is moves with a constant velocity then it is equivalent to an electric current which creates the magnetic field and electric field both around it. An electromagnetic field is generated when charged particles are accelerated. A stationary charge will produce an electric field in the surrounding space.
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a metal head of a hammer hits a nail and pushes it into a wooden board. - the force that hammer exerts on the nail - the force that nail exerts on the board a. the force that nail exerts on the hammer. b. the force that board exerts on the nail c. the force that hammer exerts on the board d. the force that board exerts on the hammer
The force experienced by the hammer and nail is the force that the hammer exerts on the nail and the force that the nail exerts on the board.
This exertion of the force in hammer and nail is due to newton's third law of motion and the conservation of momentum.
Newton's third law states that when two bodies interact, forces of equal magnitude and opposite direction act on each other. The third law is also called the law of action and reaction. This law is important in solving static equilibrium problems where all forces are balanced, but it also applies to bodies in uniform or accelerated motion.
Conservation of momentum states that the momentum remains constant within the problem region. Momentum is neither created nor destroyed, it is changed only by the action of force in the sense of Newton's laws of motion.
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What might cause cosmic radiation to be deflected around Earth?
Earth's magnetic field causes cosmic radiation to be deflected around Earth.
What is magnetic field of Earth?Earth's magnetic field, also known as the geomagnetic field, is the magnetic field that extends from Earth's interior out into space, where it interacts with the solar wind, a stream of charged particles emanating from the Sun. The magnetic field is generated by electric currents due to the motion of convection currents of a mixture of molten iron and nickel in Earth's outer core: these convection currents are caused by heat escaping from the core, a natural process called a geodynamo.
The magnitude of Earth's magnetic field at its surface ranges from 25 to 65 μT (0.25 to 0.65 G). As an approximation, it is represented by a field of a magnetic dipole currently tilted at an angle of about 11° with respect to Earth's rotational axis, as if there were an enormous bar magnet placed at that angle through the center of Earth.
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a satellite orbiting earth at an orbital radius r has a velocity v. what would the velocity be if the satellite is moved to an orbital radius of 6r?(1 point)
The velocity of the satellite is V = [tex]\frac{V}{\sqrt{6} }[/tex]
What is orbital velocity?The speed at which one body orbits the other body is known as the orbital velocity. The term "orbit" refers to an object's consistent circular motion around the Earth. The distance between the object and the earth's center determines the orbit's velocity.
In contrast to the orbital velocity, the angular velocity of the revolving disc is constant at all mass sites (of which the disc is composed). The orbital velocity, on the other hand, rotates the disk in a different direction at each site and is tangential to the circular orbit.
We can derive the mathematical equation of orbital velocity :
v = [tex]\sqrt{\frac{GM}{r} }[/tex]
where, v = orbital velocity
G = gravitational constant
M = mass of the satellite
r = radius
V = [tex]\sqrt{\frac{GM}{6r} }[/tex]
V = [tex]\sqrt{\frac{1}{6} }[/tex] × [tex]\sqrt{\frac{GM}{r} }[/tex]
Thus we can write it as:
V = [tex]\frac{V}{\sqrt{6} }[/tex]
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the escape speed for a rocket at earth's surface is ve (a) 2 v . what would be the rocket's escape speed from the surface of a planet with twice earth's mass and the same radius as earth?
The rocket's escape speed from the surface of a planet with twice earth's mass and the same radius as earth is √(2GM/r).
Escape speed with the speed at which the kinetic energy of the satellite is exactly equal to the negative amount of potential energy within the satellite/mass system. That is
1/2mv2 = |-GMm/r| which gives the escape speed ve = √(2GM/r)
The earth's surface escape speed is roughly 11.186 km/s. Accordingly, "an object needs have a starting velocity of at least 11.186 km/s to escape the gravity of the earth and fly to infinity."
The escape velocity vesc is expressed as vesc = Square root of√2GM/r,where G is the gravitational constant, M is the mass of the attracting mass, and r is the distance from the centre of that mass.
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electrons are made to flow in a wire when there is * 1 point a)an imbalance of charges in the wire b)a potential difference across its ends. c)resistance difference across its ends d) magnetic force difference across its ends
When there is a * 1 point difference in resistance across the ends of a wire, electrons start to flow through it.
What causes the direction of electron flow?From the negative terminal to the positive terminal, electrons move through the conductor. The negative terminal repels them, whereas the positive terminal attracts them.
What causes the free movement of electrons?The particles are positioned closely together and in a predictable sequence. Metal atoms' unbound outer electrons surround the tightly packed positive ions in a "sea" of delocalized or free negative charge. These free electrons are referred to as free electrons. They have unrestricted movement throughout the metallic building.
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