True. If car A and car B have the same acceleration, but car B has three times the mass of car A, car B will require three times the force to achieve the same acceleration as car A. This is because acceleration is directly proportional to the net force acting on an object and inversely proportional to the mass of the object. The equation that relates force, mass, and acceleration is F = ma, where F is the force, m is the mass and a is the acceleration.
Therefore, if car A and car B have the same acceleration, the force required to accelerate car B will be 3 times greater than the force required to accelerate car A due to its three times greater mass.
It's worth noting that the relationship between force, mass, and acceleration is a fundamental concept in physics, and it's described by Newton's second law of motion.
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A Venturi meter is a simple device for measuring fluid velocity in a gas such as air. When gas passes from left to right through the horizontal pipe, it speeds up as it passes through the constriction at point 2. Bernoulli's principle tells us that the gas pressure must be lower at point 2 than at point 1, and the pressure difference causes the liquid in the U-tube to drop on the left-hand side and rise on the right-hand side. Suppose the gas is air (density 1.20 kg/m3) that enters the left-hand side of the Venturi meter at 25.0 m/s. The horizontal tube has cross-sectional area 2.00 cm2 at point 1 and cross-sectional area 1.00 cm2 at point 2. If the liquid in the U-tube is water, what is the difference in height between the water columns on the left-hand and right-hand sides of the tube
The difference in height between the water columns on the left-hand and right-hand sides of the tube can be found using the principle of continuity of fluid flow. Applying this principle to the two points in the tube, we can write the following equation: A1 * v1 = A2 * v2
Where A1 is the cross-sectional area at point 1, v1 is the velocity of the fluid at point 1, A2 is the cross-sectional area at point 2, and v2 is the velocity of the fluid at point 2.
Since the fluid is water and is at rest, we can assume that the velocity of the fluid at both points is zero and the equation becomes:
A1 = A2 * h2 / h1
Therefore:
h2 = (A1 * h1) / A2
h2 = (2.00 cm2 * h1) / 1.00 cm2
h2 = 2h1
What is the principle of continuity of fluid flow?The principle of continuity of fluid flow states that what flows into a defined volume in a defined time, minus what flows out of that volume in that time, must accumulate in that volume.
What is a symbol of continuity?The continuity mode has a diode symbol, which is a triangle with a line on the right side.
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how should you hold a handgun for maximum accuracy? high on the grip with two hands high on the grip with one hand low on the grip with two hands low on the grip with one hand
Hold the pistol high mostly on grip to ensure that such recoil is sent straight back to the arm and hands. This enables more accurate shooting and better repeat shots. When two hands are available, use them.
What does a gun's recoil mean?Simply said, recoil is the gun's response to the expression of energy that is produced in the barrel and released from the muzzle. The hammer, which is located inside the gun's receiver, depresses your firing pin only when trigger is squeezed with enough force and pop the fuse on the round's end.
Recoil movement: what is it?The recoil is a backward motion that typically results from a force or contact. A gun will recoil when it moves rearward due to momentum. Mom might retreat from shock rather than momentum after hearing about your go to the shooting range.
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you weigh 610 n. what would you weigh if the earth were seven times as massive as it is and its radius were six times its present value? answer in units of n.
You would weigh 118.6 N. The result is obtained using the formula for acceleration due to gravity.
What is the formula for acceleration due to gravity?The acceleration due to gravity can be counted by the following formula.
g = F/m = GM/R²
Where
g = acceleration due to gravitym = mass of test objectF = gravitational force or weight (W)G = universal gravitational constantM = mass of an objectR = distance from the center of mass of objectYou weigh 610 N. Find your weight if the earth's mass were seven times and its radius were six times its present value!
Let's say
g₁ = acceleration due to gravity 1g₂ = acceleration due to gravity 2M₂ = 7M₁R₂ = 6R₁The ratio of the accelerations due to gravity is
g₁/g₂ = (GM₁/R₁²)/(GM₂/R₂²)
g₁/g₂ = (M₁/R₁²)/(7M₁/(6R₁)²)
g₁/g₂ = (M₁/R₁²)/(7M₁/36R₁²)
g₁/g₂ = (36M₁R₁²)/(7M₁R₁²)
g₁/g₂ = 36/7
Your weight now would be
m = W/g
W₁/g₁ = W₂/g₂
610/36 = W₂/7
W₂ = (610×7)/36
W₂ = 118.6 N
Hence, your weight would be 118.6 N on the new earth.
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An aerobatic airplane pilot experiences
weightlessness as she passes over the top of
a loop-the-loop maneuver.
The acceleration of gravity is 9.8 m/s^2.
If her speed is 450 m/s at this time, find the radius of the loop.
Answer in units of km.
c. describe an object that floats in water and an object that sinks in water in terms of their respective densities, as well as in terms of the relationship between each one's weight and buoyant force. (1 point)
An object floats and sinks in water based on the density of that particular object.
What is buoyant force?The force that makes objects float is called buoyancy. It is the pressure placed on a surface that is partially or completely submerged in a fluid. Differences in pressure acting on opposing sides of an object submerged in a static fluid produce buoyancy.
Why does an object floats and sinks in water?An object that floats in water, such as a piece of wood or a rubber duck, has a lower density than the water it is in. This means that the weight of the object is less than the buoyant force acting on it, which is the upward force exerted by the water on the object.
An object that sinks in water, such as a rock or a metal bar, has a higher density than the water it is in. This means that the weight of the object is greater than the buoyant force acting on it, which means that the buoyant force is not sufficient to counteract the weight of the object and it sinks.
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a 10cm×10cm×10cm wood block with a density of 720 kg/m3 floats in water.
PART A
What is the distance from the top of the block to the water if the water is fresh?
PART B
If it's seawater? Suppose that rho=1030kg/m3.
The distance from the top of the block to the water will be 3.6 cm, which is the volume displaced by the block divided by the area of the top of the block, which is 10cm x 10cm.
What is distance?Distance is a numerical measurement of how far apart two objects, places, or points are in space. It is often measured in units like kilometers, miles, meters, or feet. Distance can also be conceptualized in terms of time, as in the distance between two points in time.
PART A
If the water is fresh, the distance from the top of the block to the water is 3.6cm. This is because the block's density is 720 kg/m3, while the density of fresh water is 1000 kg/m3. Therefore, the block is lighter than the water and will float. The block will displace a volume of 1000 kg/m3, which is equal to 10 cm3. Thus, the distance from the top of the block to the water will be 3.6 cm, which is the volume displaced by the block divided by the area of the top of the block, which is 10cm x 10cm.
PART B
If the water is seawater, the distance from the top of the block to the water is 2.7cm. This is because the block's density is still 720 kg/m3, while the density of seawater is 1030 kg/m3. Therefore, the block is still lighter than the water and will still float. The block will displace a volume of 1030 kg/m3, which is equal to 10.3 cm3. Thus, the distance from the top of the block to the water will be 2.7 cm, which is the volume displaced by the block divided by the area of the top of the block, which is 10cm x 10cm.
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The work done in pushing a TV set a distance of 2 m with an average force of 20 N is
A) 2 J. B) 10 J. C) 20 J. D) 40 J. E) 800 J.
"The work done in pushing a TV set a distance of 2 m with an average force of 20 N is calculated to be 40 J."
The force used to move an object a specific distance is referred to as work in physics. It is determined by multiplying the force times the distance. It is the transfer of energy that occurs during movement.
Mathematically, W = F × s
Given that,
Distance in pushing a TV set = 2 m
Average force = 20 N
Work done while pushing a TV set = ?
Putting the above given values, we have,
W = F × s = 20 × 2 = 40 N-m = 40 J
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Rank these throws based on the amount of time it takes the ball to hit the ground.
Rank from largest to smallest. To rank items as equivalent, overlap them.
10 m/s 60 degree angle
15 m/s 45 degree angle
20 m/ s 0 degree
10 m/s 90 degree angle
15 m/s 30 degree angle
15 m/s 60 degree angle
The order of projectile motion of the amount of times from largest to smallest is, (6)>(2)>(4)>(1)>(5)>(3).
The projectile motion is a free fall motion of the body (or an object) in the horizontal path with constant velocity. In the projectile motion, the horizontal velocity of an object remains constant but the vertical velocity of an object changes along its path.
Total time taken by the object between the point of projection and the point where the ball touches the ground is called time of flight. The time of flight is the sum of time of ascent and time of decent.
The concept required to solve this question is projectile motion of an object. Initially, calculate the time taken by the ball to hit the ground in each case. Finally, determine the order of the amount of time from largest to smallest by using the resultant values of the time taken by the ball to hit the ground in all cases.
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of the charge q initially on a tiny sphere, a por tion q is to be transferred to a second, nearby sphere. both spheres can be treated as particles and are fixed with a certain separation. for what value of q/q will the electrostatic force between the two spheres be maximized?
The value of q/Q for which the electrostatic force between the two spheres will be maximized is 0.5 .
What is called electrostatics?Electrostatics is a branch of physics that deals with the phenomena and properties of stationary or slow-moving electric charges. Electrostatic phenomena arise from the forces that electric charges exert on each other and are described by Coulomb's law.
What is electrostatic charge?Electrostatic charges. Static electricity or an electrostatic charge is a deficiency or excess of electrons which occurs on ungrounded or insulating surfaces. It is produced by triboelectric charges, charges that are generated by friction between two surfaces, such as the movement of paper through a copier or printer
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gassuming the water is at rest, is the magnitude of the force of the water on the left side of the volume greater than, less than, or equal to the magnitude of the force of the water on the right side of the volume? explain your reasoning. 3. based on your answer to question a2, is the pressure at point b greater than, less than, or equal to the pressure at point c?
This is because the water is in equilibrium, meaning that the forces acting on it are balanced. In this case, the force on the left side is exerted by the water on the right side, and vice versa.
based on your answer to question a2, is the pressure at point b greater than, less than, or equal to the pressure at point c?Based on this, the pressure at point b will be equal to the pressure at point c. Pressure is defined as force per unit area, and since the magnitude of the force is the same on both sides, the pressure will also be the same.
the force of the water on the right side of the volume? explain your reasoning.It is important to note that the only assumption that can be made here is that the water is at rest. If water is in motion, the forces and pressures will be different.
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A police officer parked at the curb turns on his lights and siren, waits for traffic to clear, then pulls out and heads down the street. for an observer down the street, which is true?
a. the frequency of the siren is higher and the wavelength is shorter than it was at first.
b. the wavelength of the siren is shorter than it was at first, but the frequency is the same.
c. the wavelength of the siren is shorter and the frequency is lower than it was at first.
d. the frequency of the siren is higher than it was at first, but the wavelength is the same.
If a police officer is indeed parked near the curb, they can inspect it with the red light without risking damaging their night vision. waits for the traffic to clear before pulling out and moving down the road.
Can police run red lights without cause?
No, although they could if they were contacted in an emergency. For instance, it would be illegal for a police officer to switch on their lights and siren only to pass a red light if they were stuck in traffic behind a lot of automobiles and were impatient.
What do police lights that are not flashing mean?
"Police officers will turn this on while they are at a situation that is not particularly busy. Without the extra flash patterns and needless attention, this signals the presence of law enforcement. This is a common occurrence in densely populated areas
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a 60 kg person drives a 2000 kg car at 100 km/h over the top of a hill that has a radius of curvature of 100 m. find the normal force that the seat exerts on the person in the car as it tops the hill.
The normal force that the seat exerts on the person in the car is approximately 206000 N.
What do you mean by force?An interaction between objects is referred to as a force. It is called an interaction because when one object acts on another, the other object responds in kind.
To find the normal force that the seat exerts on the person in the car as it tops the hill, we can use the formula for centripetal force:
F = m * a, where F is the force, m is the mass, and a is the centripetal acceleration.
The centripetal acceleration is given by the formula: a = v² / r, where v is the velocity and r is the radius of curvature of the hill.
Plugging in the given values, we get:
a = (100,000 m/h)² / 100 m = 10^8 m/s²
To find the normal force, we need to use the weight of person and the car as the mass and the centripetal acceleration we just calculated.
F = (60 kg + 2000 kg) * 10^8 m/s²
F = 2.06 * 10^5 N or 206000 N
So, the normal force that the seat exerts on the person in the car is approximately 206000 N.
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Which type of energy is transferred between the two objects due to the temperature difference between them?
The type of energy transferred between the two objects due to the temperature difference between them is known as heat energy.
The heat energy transfers from the object at higher temperature to the object at lower temperature.
The exchange of thermal energy between two objects is referred to as heat. The amount of thermal energy a thing possesses may be determined by its temperature; the higher the temperature, the faster the molecules inside the object move. The transfer of heat therefore occurs from the item at higher temperature to the object at lower temperature because an object at higher temperature has more thermal energy than an object at lower temperature.
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a car can round an 80-meter radius curve at a maximum speed of 20 m/s. find the maximum speed the car can travel on the same surface if the radius of the curve is increased to 320 meters.
A car can travel at a top speed of 20 m/s around a curve with an 80-meter radius. r=0.52 and v=40.4 m/s.
What is speed and what is its unit in physics?The pace at which a distance changes over time is referred to as speed. It has a dimension of time-distance. As a result, the fundamental unit of time and or the basic unit od height are combined to form new SI unit of speed.
How does physics define speed?Knowing the variables for both distance and time is necessary to calculate the units for speed. Here, the distance is measured in meters and the time is measured in seconds.
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when the outdoor emergency warning siren at cheryl's school was tested, the sound from the siren took 7.0 s to reach her house located 2.40 km from the school. what is the speed of sound in air?
According to question, The speed of sound in air is 342.85 m/s.
Define speed?the speed at which an object's location changes in any direction. The distance traveled in relation to the time it took to travel that distance is how speed is defined. Since speed simply has a direction and no magnitude, it is a scalar quantity.Speed tells us how fast something or someone is travelling.
the solution is -
distance d = 2.4 km = 2400 m , time t = 7s
speed of sound = distance/time
speed of sound = 2400/7
speed of sound = 342.85 m/s
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7 The diagram shows a beam lying on the ground. End Q is lifted from the ground by the force F.
End P of the beam remains on the ground.
The length of the beam is 3.0m and its weight is 600 N.
The centre of mass of the beam at G is 1.0 m from end P.
What is the size of the force F when it just raises end Q from the ground?
A 200 N
B 300 N
C 400 N
D 600N
With solution.
When the beam just raises end Q from the ground, the magnitude of force F will be 300 N.
What is center of mass?The unique location where the weighted relative position of the distributed mass adds to zero at any given time is known as the center of mass in physics.
At equilibrium, net torque = 0
Take forces acting anti-clockwise direction as positive:
so, - 600 N × (1.0 m) + F ×(2.0 m) = 0
F = 600 N × (1.0m ÷ 2.0 m)
F = 300 N.
Hence, when it just raises end Q from the ground, the magnitude of force F will be 300 N.
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Suppose the distance from the lens system of the eye (cornea + lens) to the retina is 16 mm.
(a) What must the power of the lens be when looking at distant objects?
(b) What must the power of the lens be when looking at an object 18.2 cm from the eye?
(c) Suppose that the eye is farsighted; the person cannot see clearly objects that are closer than 1.0 m. Find the power of the contact lens you would prescribe so that objects as close as 18.2 cm can be seen clearly.
The power of the lens be when looking at distant objects are found to be +62.5 D and + 0.67D
What is the lens's power?The power of a lens is its capacity to cause the light rays falling on it to converge or diverge. The reciprocal of a lens's focal length is the lens's power. The SI power unit is the dioptre (D).
focal length = 16mm
power of lens = 1/f => 1/16 x 10^-3
=> +62.5 D
object distance = u = -18.2 cm
image distance = v = 16mm = 1.6cm
1/f = 1/v - 1/u
=> 1/f = 1/1.6 + 1/18.2
=> Power = 1/f => + 0.67D
What does a lens' focal length mean?When a lens is focused to infinity, its focal length can be calculated. The focal length of the lens indicates the amount of the scene that will be captured from an angle of view as well as the size of individual elements under magnification. The angle of view is narrower and the magnification is higher the longer the focal length.
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a 2.00 c charge moves from a 50.0 v equipotential line to a 40.0 v equipotential line. what is the change in the electric potential energy of the charge field system?
The charge field system's electric potential energy changed by 20J.
What is the most accurate way to define potential energy?Potential energy's definition is quite simple: It is a type of energy that can exert force on other objects but is not now exerting any force on them. In other words, available energy concerns object positions rather than object motion.
What are five examples of potential energy?Potential energy can be transformed into kinetic energy by being stored. Potential energy can take on a variety of shapes, such as gravitational, magnetic, electrical, molecular, and elastic potential energy.
Change in electric potential energy
= charge x potential difference
= 2 x ( 50 - 40)
= 20 J
Potential will be decreased by this amount.
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The density of a liquid can be determined by weighing a known volume of the liquid in a graduated cylinder. The data from the experiment is as follows: weight of cylinder 10 grams; weight of cylinder and liquid 11.8 grams; reading from cylinder 7.5 mL. Calculate the density of this liquid using the
The density of the liquid is 0.24 g/mL or 240 kg/m³. The density of a liquid can be determined by weighing a known volume of the liquid in a graduated cylinder
What is the density of the liquid?The density of a substance is a measurement of its mass per unit volume. Density is commonly expressed in terms of grammes per millilitre (g/mL) or kilogrammes per litre (kg/L) for liquids. Although conditions like temperature and pressure can affect a liquid's density, it is typically thought of as a constant feature of a substance. For the same volume, a liquid with a higher density will weigh more than a liquid with a lower density.
To calculate the density of the liquid, use the formula: density = mass/volume.
Mass of liquid = 11.8 g - 10 g = 1.8 g
Volume of liquid = 7.5 mL
So, density = 1.8 g / 7.5 mL = 0.24 g/mL or 240 kg/m³
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a car is safely negotiating an unbanked circular turn at a speed of 26 m/s. the road is dry, and the maximum static frictional force acts on the tires. suddenly a long wet patch in the road decreases the maximum static frictional force to one-fourth of its dry-road value. if the car is to continue safely around the curve, to what speed must the driver slow the car?
The speed of the car must be reduced to 13 m/sec to continue safely around the curve. if the value of maximum static friction constant reduced to 1/4th of the original value on the dry road.
The speed of the car, v = 26 m/s
Mass of the car =m
Radius of the curve = R
Coefficient of static frictional = μ
μ×mg = mv²/R
v² = μgR
v = √(μgR) = 26 m/s
If the static friction constant reduced to 1/4th of the original value, then
μ₁ = μ/4
v₁ = √(μ₁gR)
v₁ = √(μ/4×gR)
v₁ = 1/2×√(μgR)
v₁ = 1/2 × v
v₁ = 1/2 × 26 = 13 m/s
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Newtonís third law states that for every action, there is a reaction. Which of the following accurately restates this law?
A.If object A exerts a force on object B, then object B always exerts a force back on A. The object with the greater mass exerts a greater force
B.If object A exerts a force on object B, then object B always exerts a force back on A. The object with the greater acceleration exerts a greater force
C.If object A exerts a force on object B, then object B always exerts a force back on A The two forces are equal in magnitude, but opposite in direction to each other.
D.If object A exerts a force on object B, then object B always exerts a force back on A. The object with the greater mass and acceleration exerts a greater force.
Answer:B
Explanation:
The answer would be B because Answer B exerts a force which has a reaction.
Two small spheres spaced 20.0 cm apart have equal charge.
How many excess electrons must be present on each sphere if the magnitude of the force of repulsion between them is 4.57 x 10-21 N?
Number of Electrons = ?
The electrons that must be present on each sphere if the magnitude of the force of repulsion between them is calculated to be 894 electrons.
Given that,
Force of repulsion = 4.57 × 10⁻²¹ N
The electrostatic force between the two charges is given by,
F = k q₁ q₂/r²
where,
k is the Coulomb's constant
q₁ = q₂ = q is the magnitude of the charge on each sphere
r = 20 cm = 0.20 m is the distance between the two spheres
We get the charge on each sphere by substituting and solving for q,
q = √(F r²/k) = √(4.57 × 10⁻²¹) (0.2)²/(9 × 10⁹) = 1.43 × 10⁻¹⁶ C
And since each electron has a charge of e = 1.6 × 10⁻¹⁹ C
Each sphere's net charge will be provided by,
q = N e
where,
N is the number of excess electrons
N = q/e = (1.43 × 10⁻¹⁶)/(1.6 × 10⁻¹⁹) = 894
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15. two identical rifles are shot at the same time and the sound intensity level is 80.0 db at a location equidistant from both rifles. what would be the sound intensity level at this point if only one rifle were shot?
The sound level of intensity would be "61.7 dB" if only one weapon were fired. Sound volume. The answer to the query is. the shooting of two identical weapons.
80 dB is how loud?A loud noise is 80 dB or more. It's comparable to the commotion on a crowded city street. It is a loud noise level, and when you're exposed to it during longer periods of time (more than 8 to 10 hours per day), it could damage your hearing.
How loud is 80 dB?Decibels are used to measure loudness (dB). Loudness grows rapidly as decibel levels climb. A 10-dB increase equals a 10-fold increase in volume. Therefore, a vacuum cleaner's 80 dB sound is 10 times higher than a phone's 70 dB sound and 100 times higher than a standard 60 dB sound.
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if a ring particle survived for the age of the solar system, how many collisions would it undergo, given that each ring particle in the densest part of Saturn's rings collides with another about every 5 hours?
If a ring particle survived for the age of the solar system, the collisions would it undergo, given that each ring particle in the densest part of Saturn's rings collides with another about every 5 hours is 4.03 x 10¹³.
The solar system can be defined as the system including the Sun and all other objects that are gravitationally connected to the Sun. All the solar system objects rotate in the identical direction about the Sun. There are many planetary systems like ours in the universe, with planets orbiting a host star. Our planetary system is named the "solar" system because our Sun is named Sol, after the Latin word for Sun, "solar," and anything related to the Sun we call "solar." by this primary information, we can firmly conclude that if a ring particle survived for the age of the solar system, the collisions would it undergo, given that each ring particle in the densest part of Saturn's rings collides with another about every 5 hours is 4.03 x 10¹³.
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suppose you throw a ball against a wall and catch it on the rebound. how many impulses were applied to the ball? which impulse was the greatest?
Answer: <3
Explanation: ):
A sample of neon effuses from a container in 74 seconds. The same amount of an unknown noble gas requires 151 seconds.(a) Identify the gas.
The unknown noble gas is argon. Argon is the third most abundant gas in Earth's atmosphere, making up around 0.94% of the total atmosphere.
It is also the most abundant noble gas, making up around 1.3% of the atmosphere. Argon is an odorless, colorless, and tasteless gas that is slightly heavier than air.
It is nontoxic and nonflammable. Argon has a low thermal conductivity, so it is often used as an inert gas shield in welding and other high-temperature processes. In this case, it took 151 seconds for the same amount of argon to effuse from the container, compared to 74 seconds for neon.
This indicates that argon has a much lower effusion rate than neon and is therefore a different gas.
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What type of telescope is the hubble space telescope?
The Hubble space telescope is a reflecting telescope.
Mirrors are used by reflecting telescopes, also called reflectors, to collect and concentrate light. The HST features an eight-foot diameter primary mirror and a secondary mirror that focuses the light collected by the primary mirror onto the telescope's scientific equipment. The HST is a Cassegrain telescope, allowing for a compact design due to its concave primary mirror and convex secondary mirror.
Reflecting telescopes are frequently chosen over lens-based ones for space-based telescopes because lenses are more susceptible to distortion and poor image quality caused by thermal expansion and contraction than mirrors are. The HST was put into orbit in the year 1990 and has since been utilised to produce a number of ground-breaking astronomical discoveries.
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A magnetic field of magnitude 0.48 T is directed vertically upward. (a) Find the magnetic flux through a flat surface of area 19 cm2 if the surface is vertical. (b) Find the magnetic flux through a flat surface of area 19 cm2 if the surface is horizontal. (c) Find the magnetic flux through a flat surface of area 19 cm2 if the surface is at angle of 54° with the horizontal.
The magnetic flux is 9.12Wb, the magnetic flux, if the surface is horizontal, is 0, the magnetic flux in the area is 19 and angle 54 is 5.08Wb.
(a) The magnetic flux through a flat surface of area 19 cm2 if the surface is vertical can be calculated using the formula
Φ = BA, where Φ is the magnetic flux, B is the magnetic field strength, and A is the area of the surface. In this case, the magnetic flux is
0.48T ×19 cm² = 9.12 Wb.
(b) The magnetic flux through a flat surface of an area 19 cm2, if the surface is horizontal, is 0 Wb. This is because the magnetic field is directed vertically upward, so it will not be able to penetrate through a horizontal surface.
(c) The magnetic flux through a flat surface of area 19 cm2, if the surface is at an angle of 54° with the horizontal, can be calculated using the formula Φ = BAcosθ, where θ is the angle between the magnetic field and the surface. In this case, the magnetic flux is
0.48T ×19 cm²× cos(54°) = 5.08 Wb.
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what advantages do fiber optic cables offer over twisted pair cables and other media choices? what are the disadvantages of implementing fiber optic cables?
The main advantage of using optical fibre cable over unshielded twisted pair cable is its huge bandwidth. But even so, we use twisted pair cable at the consumer end on occasion.
The following are some advantages of using optical fibre cable: 1. Access to the internet Twisted pair cable's diameter is greater than that of optical fibre cable. Optical fibre cable has a tiny diameter due to its flexibility and thinness. 4. In twisted-pair cables, attenuation is very high. In optical fibre cables, attenuation is extremely low. More cable is allowed with fibre optic cables compared to copper twisted pair lines. Compared to copper twisted pair connections, fibre optic cables have a wider bandwidth. Installing the cables is affordable.
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Suppose you are at the edge of a cliff and throw one ball down to the ground below and another up at the same speed. The upward-thrown ball rises and then falls to the ground below. How do the speeds of the balls compare when striking the ground
The speed of the two balls when striking the ground will be the same. Both balls will have the same initial velocity when thrown, and the only force acting on them is gravity.
What is the speed?The speed of an object is the rate of change of its position relative to a frame of reference, and is a function of time. It is a scalar quantity and is measured in meters per second (m/s). The speed of an object can be calculated by dividing the distance covered by the object by the time taken. An object's speed can be increased or decreased by applying an external force.
Here the acting acceleration is gravity
So,
v₁ - u₁ = gt
v₂ - u₂ = gt
As time and and gravity is same
v₁ - u₁ = v₂ - u₂
As Initial velocity is 0
v₁ = v₂
Thus, velocity of both the balls will be same when hitting the ground.
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