Question: An organiser of a bungee jumping competition changes the length of the bungee rope so different people can use the rope safely. Use your idea of forces to describe how the size of a person affects the rope when they jump.
An organiser of a bungee jumping competition changes the length of the bungee rope so different people can use the rope safely because high weight can cause the rope to stretch and break.
When a person jumps, their size impacts the bungee rope since their weight causes the rope to expand different manner. The force of a person's body weight causes the bungee rope to lengthen when they jump, and the degree of stretching depends on their mass. Since the force of the weight is greater, a bigger person will stretch the rope more than a lighter one. Due to this phenomenon, extra stretching of a rope can lead to breaking which can cause life hazards. Therefore, the organizer changes the length of the bungee rope.
For example, if an adult weighs twice as much as a kid, the bungee rope will stretch twice more than the kid's leaps. This is because the adult's weight is twice as much as the child's weight, so the force of the adult's weight will be twice as great, causing the rope to stretch twice as much.
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an impulse of 20 n*s is exerted on a 0.30 kg baseball traveling 40 m/s west. what is the velocity of the baseball after it has been hit?
The velocity of the baseball after it has been hit is 106.67 m/s and moving towards east.
Given that, impulse = 20 N/s
Mass m = 0.3 kg
Initial velocity of the baseball Vi = 40 m/s
We know the formula for impulse as change in momentum. It can be written as,
Impulse = m ( Vf - Vi)
20 = 0.3* (Vf - 40)
66.67 = -Vf - 40
Vf + 66.67 + 40 = 0
Vf = - 106.67 m/s
The velocity of the baseball after it has been hit is 106.67 m/s but in the opposite direction to the initial velocity direction of the ball.
Thus, the ball moves with 106.67 m/s towards east.
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a brass plug is to be placed in a ring made of iron. at 15oc, the diameter of the plug is 8.755 cm and that of the inside of the ring is 8.741 cm. they must both be brought to what common temperature in order to fit?
To fit, they must both be chilled to -150 °C from a starting temperature of 20 °C.
What is the physics formula for diameter?The diameter is actually made up of two parts, each of which is a radius. Thus, the diameter formula is: Diameter = 2 the radius measurement. This equation can be expressed quickly as d = 2r.
Why is it referred to as a diameter?The radius is the length from the center to any point on the surface. In a similar manner, the diameter of a circle is defined as the distance traversed by two points on its surface through its center. In other words, the radius and diameter are equal.
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6) suppose the amount of mass in a black hole doubles. does the event horizon change? if so, how does it change?
When the amount of mass in a black hole twice, the event horizon doubles as mass.
The black hole's mass affects the event horizon's size. The radius of a black hole increases with its mass. For the Sun or any object with a solar mass of one, the event horizon is 3 km (a little under two miles). Black holes become less dense the more mass they receive. The singularity, a place that is nearly infinitely small and dense, is where a black hole's whole mass is concentrated. The event horizon, or the radius from the singularity at which its escape velocity exceeds the speed of light, encircles this point. The boundary where the velocity required to escape from a black hole exceeds the speed of light, the universe's maximum speed, is defined by the "surface" of the black hole, also known as its event horizon. Radiation and matter fall in, but they are unable to exit.
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if 90 j of work are needed to stretch a spring from 8 cm to 13 cm and another 294 j are needed to stretch it from 13 cm to 20 cm, what is the natural length of the spring?
The natural length of the spring is 10 cm. The further explanation about that can be seen below.
To find the natural length of the spring, we need to find the amount of work needed to stretch the spring from its natural length to 8 cm and from its natural length to 13 cm, and set these equal to 90 J and 294 J, respectively. Let's call the natural length of the spring x and the spring constant k.
The work needed to stretch the spring from its natural length to a length L is given by:
W = 1/2 * k * (L - x)^2
Substituting this equation into the two given equations and solving for x, we get:
90 J = 1/2 * k * (8 cm - x)^2
294 J = 1/2 * k * (13 cm - x)^2
Solving these equations simultaneously, we find that the natural length of the spring is x = 10 cm.
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what period do you expect to find for small amplitude swinging motion of a rock tied to a 1.0 m long string?
For small amplitude swinging motion of a rock tied to a 1.0 m long string is 2.0 s.
The length of the pendulum L = 1.0m = 100cm
Hence it is a seconds pendulum
so, its time period would be 2 seconds
[tex]\text { From } \begin{aligned}T & =2 \pi \sqrt{\frac{l}{g}} \\& =2 * 3.14 * \sqrt{\frac{1.0}{9.81}} \\& =2.0 \mathrm{~s}\end{aligned}[/tex]
The amount of time that a behavior lasts or a condition persists. Depending on the type of activity or situation under consideration, it may be measured in seconds or in millions of years.
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an automobile with 0.370-m radius tires travels 80,000 km before the tires need to be replaced. how many revolutions do the tires make in this lifetime? neglect any change in radius due to wear.
An automobile having tires with a 0.370-m radius may drive 80,000 km before needing new tires. The tires' total amount of revolutions over their lifetime is 3x10^7
Given that radius of tire = 0.370m
Distance the tire travels (s) = 80000km = 8 x 10^7 m
the number of rotations of the tire is = n
We know that circumference of tire = 2r = 1 revolution or rotation of tire
circumference = 2x3.14x0.370 = 2.32m per revolution
Number of revolutions made = total distance / distance travelled in 1 revolution
n = 8 x 10^7/2.32 = 3.44 x 10^7
Hence number of revolutions made by the tire = 3 x 10^7
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Consider how Nyad physically and mentally trained for her endeavor. Which of these training and conditioning exercises—those designed to increase her physical endurance or those intended to get her through mentally—do you believe helped her the most and why?
Physical and mental training helps to increase endurance.
What are the benefits of physical and mental training?It should come as no surprise that helping your body will also benefit your mind. Your brain receives more oxygen when you exercise. Additionally, it raises your brain's levels of endorphins, or "feel-good" chemicals. This is why it makes sense that those who maintain a healthy physical state also frequently exhibit higher levels of mental agility.
Exercise your mind just as much as your body. A study published in the Proceedings of the National Academy of Sciences claims that specific memory workouts can improve "fluid intelligence," or the capacity to reason and solve novel challenges.
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Water flowing through an 8-cm-diameter pipe enters a porous section, as in fig. P3. 10, which allows a uniform radial velocity vw through the wall surfaces for a distance of 1. 2 m. If the entrance average velocity v1 is 12 m/s, find the exit velocity v2 if (a) vw
What is average speed?
Average velocity is outlined because the amendment in position or displacement (∆x) divided by the time intervals (∆t) within which the displacement occurs.
The average velocity will be positive or negative relying upon the sign of the displacement. The SI unit of average velocity is meters per second (m/s or ms-1).
For a suction velocity of Vw = 0.15 m/s
Cylindrical suction expanse.
Aw = 2π (0.04) (1.2) = 0.30 lbm2
Q1 = Qw+Q1
(12* π * (0.08)2 / 4 = (0.15)(0.30) + V2 π
(0.08)2 / 4
V2 = 3 m/s
Hence, the exit velocity is Vw = 0.15 m/s
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A rocket burns fuel at a rate of 269 kg/s and
exhausts the gas at a relative speed of 3 km/s.
Find the thrust of the rocket.
Answer in units of MN.
The thrust of the rocket is 0.807 MN.
What is the thrust of the rocket?
The thrust of the rocket is calculated by applying Newton's second law of motion as shown below.
F = ma
where;
a is the acceleration of the rocketm is the mass of the rocketF = m (v/t)
F = m (x/t²)
F = ( m/t) (x / t)
F = ( m/t ) ( v )
where;
m/t is the mass flow rate of the rocketv is the speed of the rocketF = ( 269 kg/s ) ( 3,000 m/s )
F = 807,000 N
F = 0.807 MN
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sider the standing wave on a guitar string and the sound wave generated by the guitar as a result of this vibration. what do these two waves have in commo
The standing wave and sound wave have the same frequency
When a guitar string is plucked or strummed, it vibrates and creates a standing wave pattern. The frequency of this standing wave determines the pitch of the note that is produced by the guitar. The sound wave that is produced by the vibrating string will also have the same frequency as the standing wave. This is because the sound wave is created by the vibrations of the string, which are determined by the standing wave pattern.
The air molecules vibrate when the guitar vibrates, causing these waves to have the same frequency. Since a wave's period is inversely proportional to its frequency in this instance, the period will also be identical. Since wavelength and frequency are the products of speed, waves will travel at varying speeds because of this. As a result, both the period and frequency are identical.
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FILL IN THE BLANK. according to the first law of thermodynamics, the total amount of energy in the universe _______.
According to the first law of thermodynamics, the total amount of energy in the universe constant .
The First Law of Thermodynamics is a thermodynamic adaptation of the Law of Conservation of Energy. "The total energy in a system remains constant, even when it may be transformed from one form to another," is a straightforward expression. "Energy cannot be created or destroyed" is another frequently used phrase (in a "closed system"). This is the fundamental tenet of the First Law, while there are numerous nuances and consequences that might be better expressed in more intricate forms.
It distinguishes between heat and thermodynamic work as two different types of energy transmission for a system with a constant amount of matter. The law also specifies a system's internal energy, a broad attribute for accounting for the balance of energies.
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which of the following cannot travel in a vacuum? a. a yellow light wave b. a sound wave c. a radio wave d. all can travel in a vacuum. e. none can travel in a vacuum.
Which of the following cannot travel in a vacuum- none can travel in a vacuum.
To travel from one place to another by car, train, plane or ship; Travel: Travel for pleasure. To move or move from one place or point to another. Continue or proceed in any way. As a representative of a commercial company, I travel from place to place. Communicate or Spouse: He travels in wealthy crowds.
Travel refers to activities that involve long journeys. Tourism also means travel, but tourism has a specific purpose. It means a trip to a pleasant place. We travel with our hearts and eyes open to learning more about the world than a newspaper can contain. We travel by ignorance and knowledge to bring the least we can to regions where the distribution of wealth is different.
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a block with a mass of 1.5 kg is set atop a vertical spring compressed 0.75 m. when the spring is released, the block flies upward and achieves a speed of 2.5 m/s at a height of 1.4m. what is the spring constant of the spring?
The spring constant of the spring to which a block is attached and spring is compressed initially and then released is 16.67 N/m.
Energy is being transferred from one form to another form and follows conservation of energy.
Mathematically,
" 1/2 * k * x² = 1/2 * m * v² "
where, k is the spring constant = ?
Compression of the spring = 0.75 m
m is Mass of the block = 1.5 kg
v = velocity of the block = 2.5 m/s
Placing values in above equation, we get,
1/2* k * (0.75)² = 1/2* (1.5)* (2.5)²
k * (0.75)² = (1.5)* (2.5)²
k = [(1.5)* (2.5)²]/(0.75)² = 9.375/0.5625 = 16.67 N/m
Thus, the spring constant of the spring is 16.67 N/m.
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6. over what range of distances from the sun would you expect to find only solid, rocky material collecting together to form a terrestrial planet? explain your reasoning.
The distance from the sun at which this material can collect and form a terrestrial planet is influenced by a number of factors, including the presence of volatile materials, and the amount of radiation and heat being emitted by the star.
In general, terrestrial planets are thought to form within a habitable zone, which is a range of distances from a star where the temperature is just right for liquid water to exist on the surface of a planet. This zone is often referred to as the "Goldilocks zone," because it is not too hot and not too cold for life as we know it.
The inner boundary of the habitable zone is determined by the distance at which the temperature of the protoplanetary disk is too high for water ice to exist, while the outer boundary is determined by the distance at which the temperature of the disk is too low for water vapor to remain in the atmosphere.
Based on these factors, it is thought that terrestrial planets can form within a distance range of approximately 0.8 to 1.5 astronomical units (AU) from the sun. One AU is the average distance from the Earth to the sun, which is about 93 million miles.
what principle is described by the distribution of objects in a visual field that connects the different parts of a whole work? space balance movement symmetry
In interior design, balance refers to the appropriate placement of elements in a space to produce aesthetic harmony.
Balance refers to how objects, colors, textures, and space are distributed visually. These components should be balanced to create a design that feels stable, as if the design were a scale. Balance refers to the idea of visual equilibrium and has to do with our feeling of balance on a physical level. Visual stability is the consequence of balancing conflicting forces in a composition. The majority of well-balanced compositions do so either symmetrically or asymmetrically. Equal weights on equal sides of a composition, balanced around an axis or fulcrum in the middle, are indicative of symmetrical equilibrium. Symmetrical balance inspires feelings of formality and elegance (it's also known as formal balance).
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a baseball is hit with a horizontal speed of 16 m/s and a vertical speed of 12 m/s upward. what are these speeds 5 s later?
After t = 4 seconds, ascertain the baseball's vx and vy horizontal and vertical speeds. Only the pressure applied on the object's vertical component—gravity—is recognized by us. This indicates that the perpendicular speed is unchanged.
What is the easiest way to define gravity?A planet and maybe other bodies pull objects toward their centers through their gravitational force. The gravitational attraction of the sun keeps all of the planets in their orbit around it.
How do these two things affect gravity?The size of an object and its distance from other things both have an impact on gravity. The mass of a thing is a gauge for its matter content. A heavier object will fall to the ground more quickly than a lighter one. Gravitational pull weakens when the separation between two objects grows.
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On a route to senior prom, a couple was cut off by another car. The couple traveling 21 m/s slammed on the brakes and slowed to a speed of 8 m/s in a time of 1.4 seconds. How far did they travel while breaking?
1) 18 m
2) 20 m
3) 29 m
4) 41 m
5) answer not shown
They travelled 20 meter while breaking. Hence, option (2) is correct.
What is speed?Speed is distance travelled by the object per unit time. Due to having no direction and only having magnitude, speed is a scalar quantity With SI unit meter/second.
Initial speed of the car is: u = 21 m/s.
Final speed of the car: v = 8 m/s.
Time interval: t = 1.4 second.
Deceleration of the car: a = (u-v)/t = (21 - 8)/1.4 m/s^2 = 9.29 m/s^2.
Hence, the car traveled during deceleration:
s = ut - at^2/2
= (21×1.4) - 9.29×(1.4)^2/2 meter
= 20 meter.
Hence, option (2) is correct.
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please help (urgent)
A small object of mass m is attached to a light string. The light string is attached to a fixed point on the ceiling. The object moves along a circular path in the horizontal plane forming a conical pendulum. The angle between the string and the vertical direction is fixed.
1. How are T, mg, and related?
A. Tcos =mg
B. T = mg cos
C. T sin =mg
D. T = mg sin
E. T = mg
2. What is the net force pointing to the center of the circle?
A. T
B. T sin
C. T tan
D. mg cos
E. T cos
3. How are [tex]ma_{cp}[/tex] and mg related?
A. [tex]ma_{cp}[/tex] = mg sin
B. [tex]ma_{cp}[/tex] =mg tan
C. [tex]ma_{cp}[/tex] = mg cos
D. [tex]ma_{cp}[/tex] = mg
E. [tex]ma_{cp}[/tex] tan =mg
4. If =15.0° and r = 0.200 m, find the angular speed and the linear speed of the object.
v = ____m/s
[tex]\omega[/tex] = ___rad/s
5. Is this a simple harmonic motion?
A. yes
B. no
Answer:
The correct answer is D. T = mg sin. The tension in the string (T) is equal to the mass (m) of the object multiplied by the acceleration due to gravity (g) and the sine of the angle between the string and the vertical direction.
The correct answer is E. T cos. The net force pointing to the center of the circle is the tension in the string (T) multiplied by the cosine of the angle between the string and the vertical direction.
The correct answer is A. = mg sin. The centripetal force is equal to the mass (m) of the object multiplied by the acceleration due to gravity (g) and the sine of the angle between the string and the vertical direction.
To find the angular speed of the object, you can use the formula = v/r, where v is the linear speed of the object and r is the radius of the circular path. Substituting the given values, you get = v/0.200 m. To find the linear speed, you can use the formula v = r , so v = (0.200 m)( ). Solving for and v, you get = 4.47 rad/s and v = 0.895 m/s.
The correct answer is B. no. A simple harmonic motion is a type of periodic motion where the restoring force is proportional to the displacement from the equilibrium position and is always directed towards the equilibrium position. In a conical pendulum, the restoring force is not proportional to the displacement and is not always directed towards the equilibrium position, so it is not a simple harmonic motion.
Explanation:
the plates of an isolated parallel plate capacitor with a capacitance c carry a charge q. what is the capacitance of the capacitor if the charge is increased to 2q?
The plates' exact charges are Q, -Q. The charge that is acquired by the plate when a parallel plate capacitor of capacitor C is connected across a battery of potential difference V will be equal to Q = CV.
The entire charge is stored on both plates of a perfect capacitor. The potential difference V between the two plates is proportional to the charge Q on the plates. Q = CV, C = Q/V, and capacitance C are proportional constants. When one plate's area doubles while the area of the other plate is cut in half, the electrical capacitance is cut in half because the effective area is less. Where A is the area of the plate and d is the separation distance, capacitance C = oA/d.
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A bookhelf i 2m long, with upport at it end(P and Q). Don't conider the weight of the bookhelf when you are anwering quetion
The book i moved o that it i 50cm from Q. Ue moment to calculate the frce at P and Q
A bookshelf is 2m long, with support at it end (P and Q). Don't consider the weight of the bookshelf. The book is moved to that it is 50cm from Q. The force at P is W/3 and Q is 2W/3.
The force at points P and Q using the concept of moments, you need to know the weight of the bookshelf and the location of the book on the shelf. The moment of a force about a point is equal to the force multiplied by the distance from the point to the line of action of the force. The line of action of a force is the straight line through which the force acts. In this case, let's assume that the weight of the bookshelf is W and the location of the book is x meters from Q. The forces at points P and Q can be found using the following equations:
Moment at P = (W - F) x x
Moment at Q = F x (2 - x)
Where F is the force exerted by the book on the shelf.
Solving these equations for F and substituting the given values gives:
= F = W x (2 - x) / (2 - x + x)
= W x 2 / 3
The force at point P is equal to the weight of the bookshelf minus the force exerted by the book, which is:
= F at P = W - F
= W - W x 2 / 3
= W / 3
The force at point Q is equal to the force exerted by the book, which is:
= F at Q = F
= W x 2 / 3
So, if the weight of the bookshelf is W and the book is 50 cm from Q (which is equal to 0.5 meters), the force at point P is W / 3 and the force at point Q is 2W / 3.
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What is the kinetic energy of a ball with a mass of 0. 5 kg and a velocity of 10 m/s? (formula:)25 j5 j50 j100 j.
The object weighs 0.5 kg and moves at a pace of 10 meters per second. So: KE = (1/2)(0.5)(10)^2. As a result, the ball has a kinetic energy of 25 J.
In science, what is an energy?Energy is characterized as having the "ability to accomplish work, which is the capacity to apply a force sufficient to move an object." Despite this unclear definition, the concept is actually quite straightforward: energy is just the force that moves objects. Potential and kinetic energy are the two different categories.
What makes energy crucial?Modern medical technology, transportation, communications, computers, and many other things are all powered by energy. Energy security and affordability are more fundamental needs in developing countries.
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across a horizontal distance of feet, a roller coaster has a steep drop. the height of the roller coaster at the bottom of the drop is feet, compared to its height at the top of the drop. what is the average amount that the roller coaster's height changes over each horizontal foot?
For each horizontal foot, the roller coaster changes 6 feet in height.
A roller coaster has a steep drop over a horizontal distance of 25 feet.
the distance is 25 ft.
At the bottom of the drop, the roller coaster is 150 feet tall. (A negative sign is displayed since the measurement is made from top to bottom.)
The increase is therefore 150 feet.
The roller coaster's gradient is,
m= rise/run= 150/25= 6
A slope of 6 indicates that the object rises by 6 units for every unit of run.
As a result, the roller coaster changes height by six feet for every horizontal foot.
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How does changing the amplitude affect the wave speed
Answer:
sigh
Explanation:
Let's explain this in math terms. A=x A>y a=c right? So then, Y>x but X=C+Y. Then A<A. Whats the answer?
a convex lens has a focal length fff . an object is placed at a distance between fff and 2 fff on a line perpendicular to the center of the lens. the image formed is located at what distance from the lens?
The image will be formed beyond 2f if the object has been kept between f and 2f in a convex lens.
Any converging lens is referred to as a convex lens.
A lens that converges light rays that are moving parallel to its main axis is known as a converging lens or convex lens.
The distance between a lens's center and its focus is known as the focal length, or f, of a lens.
When an item is positioned along a line perpendicular to the center of the lens, between infinity and twice the object's distance from the focal point,
The image will be situated between the focal point, f, and twice the focal point's distance, 2f.
Consequently, for an object positioned along a line perpendicular to the center of the lens between infinity and 2f.
The image created by a convex lens when an item is positioned between F and 2F is magnified, real, inverted, and beyond 2F.
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express the internal shear in terms of x for 0≤x≤6ft, where x is in ft.
The internal shear in terms of x for [tex]$0 \leq x \leq 6 \mathrm{ft}$[/tex], where x is in ft. will be[tex]V_x & =A_y-400 \times x =1900-400 x[/tex]
A free-body diagram is a graphical representation used in physics and engineering to show the applied forces, moments, and consequent reactions on a body in a specific situation. It shows a body or group of connected bodies together with all the applied forces, times, and responses that the bodies experience.
Potential energy and equilibrium are related in that the body's potential energy is lower in such an equilibrium.
In this case, the state generates a force that does not resist the displacement when a little distance displaces the body.
Draw the free-body diagram as shown below.
Consider the moment equilibrium condition about B.
[tex]$$\begin{aligned}& M_B=0 \\& A_y \times 9-400 \times 6 \times\left(\frac{6}{2}+3\right)-900 \times 3=0 \\& A_y=1900 \mathrm{lb}\end{aligned}$$[/tex]
Write the internal shear force equation for [tex]$0 \leq x \leq 6 \mathrm{ft}$[/tex].
[tex]V_x & =A_y-400 \times x =1900-400 x[/tex]
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The complete question should be:
Express the internal shear in terms of x for [tex]$0 \leq x \leq 6 \mathrm{ft}$[/tex], where x is in ft.
Express your answer in terms of x. Express your answer using three significant figures.
What is the rest mass m of a particle traveling with the speed of light in the laboratory frame. Express your answer in MeV/c? to one decimal place.
The rest mass m of a particle traveling with the speed of light in the laboratory frame is 0.
We know that, formula for mass of object can be given by:
m= [tex]\frac{m_{0} }{1-\sqrt{v^{2}/c^{2} } }[/tex]
where
m = mass of object
[tex]m_{0}[/tex] = rest mass
v = speed of the particle
c = speed of light
By Modifying this equation we get :
Given speed of particle is equal to speed of light.
i.e. v = c.
Putting this value in above equation we get [tex]m_{0}[/tex] =0.
Therefore, the rest mass of a particle traveling with the speed of light in the laboratory frame is 0.
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a loaded grocery cart is rolling across a parking lot in a strong wind. you apply a constant force f
The digits on the left side of the number 3 remain the same when it is less than 5, however the digits on the right side of the number 3 and 3 are replaced by zero. done work=-180 J
We are informed that
Constant force = F = (33 N)i - (41 N) j
Displacement=s=(-9.4m)i-(3.1m)j
We must locate the completed work.
Done work = F.s.
Using the equation
Working = (33i-41j).
(-9.4i-3.1j)
Work completed: 33. (-9.4)
i+41j.3.1j
Making use of the rules i.i=j.j=k.k=1, i.j=j.k=k.i=i.k=k.j=j.i=0, and
Finished work: -310.1+127.1
Finished work: 183.1 J
Answers must be written with two significant figures.
The digits on the left side of 3 remain the same when the unit's digit 3 is less than 5, however the digits on the right side of 3 and 3 will be replaced by 0.
done work=-180 J
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identify the stage in star life cycle in which hydrogen is the primary fuel for nuclear fusion?
The stage of life cycle of star in which hydrogen acts as the primary fuel for nuclear fusion is main sequence.
Life cycle of stars: Main sequenceNebulae, which are enormous clouds of gas and dust, are where all stars are born. Stars do not survive forever, despite the fact that they shine for tens of thousands or even millions of years. A star's size affects both its last phase of life and the changes that take place in it over time.
A star's energy comes from nuclear reactions at its core, which is why it shines so brightly. This phase is referred to as the "main sequence." A star's exact lifespan is highly dependent on its size. Massive stars quickly run out of fuel. They might only exist for a few hundred thousand years, then. Smaller stars burn up their fuel more gradually, lasting for several billion years.
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Which best describes the acceleration of the object? constant and positive constant and negative changing and positive changing and negative