1 (a) The vertical height upto which the ball reaches will be 4.608 meters
a) We may use the theory of conservation of energy to compute the vertical height reached by the ball.
The ball's original total mechanical energy equals its ultimate potential energy.
The potential energy formula is mgh,
where m is the ball's mass,
g is the acceleration due to gravity (9.8 m/s2), and
h is the height.
The initial total mechanical energy equals the initial kinetic energy, which may be computed using the formula 1/2 * m * v2,
where v represents the beginning velocity.
By equating the two, we get:
1/2 * m * v^2 = mgh
Rearranging and solving for h:
h = v^2 / (2g)
= (9.6 m/s)^2 / (2 * 9.8 m/s^2)
= 4.608 m
b) If the ball glides up the hill without rolling, its final height will be lower than if it rolls.
As the ball slows down, part of its original kinetic energy is converted into frictional warmth, sound, and other types of internal energy.
To calculate the moment of inertia, we must first know the skater's mass distribution and the axis along which the moment of inertia is being computed.
Assuming the skater's arms are dragged inward and may be considered as cylinders with radius 0.125 m and mass m_a, the moment of inertia can be calculated as follows:
I = I_cm + m_a * r^2
where I_cm is the moment of inertia of the skater's body (assuming it can be treated as a point mass),
r is the distance from the axis of rotation to the center of mass of the cylinder (0.125 m), and
m_a is the mass of the cylinder (unknown).
To calculate I_cm, we need to know the skater's body's mass and shape. Without more information, we cannot calculate the moment of inertia.
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Rank each six lunar positions from left to rght based on the amount of moons illuminated surface that is visible from earth from greatest to least
Moon stages as seen from a northern hemisphere viewer. Consider that the Star is in the gibbous phase right now.
A phase is what?
The Moon's phases are the various forms that the Moon takes throughout the course of the month. Every month, the Moon's appearance varies.Phase is the location of a point time on a waveform cycle. A phases is an irrational quantity. The phase is a single full cycle. Additionally, the phase is referred to in terms od rad / s.
How do radians work?
Simply described, a unit of measure is an angle measurement unit predicated just on the radius of a circular. As a result, if we visualise considering the length.
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which of the following defines a formula for computing the time, t , as a function of the volume, v ?
The t(v) = v/2, defines a formula for computing the time, t as a constant , as a function of the volume, v
What is constant?A constant is a value that does not change. It can be a number, a string of characters, a boolean (true/false) or a constant expression. Examples of constants include pi (3.14159), a string of characters such as “Hello World” and a boolean value of true or false. Constants are used in programming to represent values that are not liable to change, such as the value of pi, or a string of characters that will remain the same throughout the program's execution. They are also used to represent values that are not known until the program is run, such as a user inputted value.
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Complete question:
the industrial revolution and the invention of the steam engine impacted brewing by (select all that apply)
Answer:
The industrial revolution, which began in the late 18th century, brought about many technological advancements that changed the way goods were produced, including the invention of the steam engine. The steam engine made it possible to automate many processes and increased the efficiency of manufacturing. In the brewing industry, the steam engine was used to power pumps and other machinery, making it possible to brew beer on a larger scale and with greater consistency. Additionally, the steam engine made it possible to transport beer over long distances, which helped to expand the market for beer beyond local communities. As a result, the industrial revolution had a significant impact on the brewing industry, making it possible for breweries to produce more beer at a lower cost and to reach a wider market.
in a ladder problem, why is the normal force of the ladder touching the house the same as the gravitational force?
The wall's normal force is present at the top of the ladder. At the middle of the ladder, gravity is at work. These forces cause torques, that's why the normal force of the ladder touching the house the same as the gravitational force.
What is gravitational force?The gravitational force is described by Newton's Law of Universal Gravitation. The gravitational force, a type of non-contact force, is a constant force in nature that is attractive and constrained.
The force of attraction felt by two or more objects in contact is referred to as gravitational force. The Gravitational Force Formula, which was derived from Newton's Universal Law of Attraction, is used to calculate the force of gravity.
Gravity is all around us. It establishes how much we weigh and how far a thrown basketball will bounce before contacting the ground. The gravitational force on Earth is the same as the force the Earth exerts on you.
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To practice Tactics Box 23.2 Ray Tracing for a Converging Lens.
The procedure known as ray tracing is a pictorial method for understanding image formation when lenses or mirrors are used. It consists of locating the image by the use of just three "special rays." The following tactics box explains this procedure for the case of a converging lens.
TACTICS BOX 23.2 Ray tracing for a converging lens
Draw an optical axis. Use graph paper or a ruler. Establish an appropriate scale.
Center the lens on the axis. Mark and label the focal points at distance f on either side.
Represent the object with an upright arrow at distance s. It is usually best to place the base of the arrow on the axis and to draw the arrow about half the radius of the lens.
Draw the three "special rays" from the tip of the arrow. Use a straightedge.
A ray parallel to the axis (Ray 1) refracts through the far focal point.
A ray that enters the lens along a line through the near focal point (Ray 2) emerges parallel to the axis.
A ray through the center of the lens (Ray 3) does not bend.
Extend the rays until they converge. This is the image point. Draw the rest of the image in the image plane. If the base of the object is on the axis, then the base of the image will also be on the axis.
Measure the image distance s?. Also, if needed, measure the image height relative to the object height.
Follow the steps above to solve the following problem: An object is 9.0 cm from a converging lens with a focal length of 2.8 cm. Use ray tracing to determine the location of the image.
Part A
The diagram below shows the situation described in the problem. The focal length of the lens is labeled f; the scale on the optical axis is in centimeters.
Draw the three special rays, Ray 1, Ray 2, and Ray 3, as described in the tactics box above, and label each ray accordingly. Do not draw the refracted rays.
Draw the rays from the tip of the object to the lens.
The rest of the image in the image plane and measure the image height relative to the object height, if needed.
To solve the problem, you can use the following steps:
the optical axis and center the lens on it.
Mark and label the focal points at distance f on either side, with f = 2.8 cm.
Represent the object with an upright arrow at a distance of s = 9.0 cm from the lens.
the three special rays from the tip of the arrow:
Ray 1: Parallel to the axis, refracts through the far focal point.
Ray 2: Enters the lens along a line through the near focal point, emerges parallel to the axis.
Ray 3: Goes through the center of the lens and does not bend.
Extend the rays until they converge at the image point.
Measure the image distance, s'. The image distance can be calculated using the lens equation:
1/s' + 1/s = 1/f
where s' is the image distance, s is the object distance, and f is the focal length of the lens.
Draw the rest of the image in the image plane and measure the image height relative to the object height, if needed.
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a has has a volume of 240.0 mL at 25 degrees celcius and 0.789 atm. calculate its volume at STP
The volume is 189.6ml if it has a volume of 240.0 mL at 25 degrees celcius and 0.789 atm.
How to calculate volume?According to Boyles law, the volume and pressure vary inversely when a gas is held in a closed container at a constant temperature and mass.
P1V1= P2V2
In this case, P1 = 0.79 atm, V1 = 240 ml, and P2 = 1 atm.
Consequently, by changing the variables in the equation above, we get
0.79×240 = 1×V2
V2 = 189.6 ml
Consequently, its volume at STP (1 atm and 0 oC) is equal to 189.6 ml.
Boyle noted that the pressure and volume's product is shown to be almost constant. For an ideal gas, the volumetric product of pressure is a precise constant. V = constant * p. In his honor, Boyle's Law is the name given to this relationship between pressure and volume.
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best example of kinetic energy being transformed into potential energy
A) a ball rolling up a hill
B) bending a paperclip
C)starting an automobile
Answer:
Explanation:
If a Ball rolls up a hill, the kinetic energy of motion is then converted into potential energy stored in the ball at the top of the hill. The Potential hill stored in the ball can be used to roll the ball down the hill.
Answer:
Explanation:OPTION(A)
WHEN THE BALL ROOLS UP THE HILL IT LOSES ITS KINETIC ENERGY CONTINUOUSLY AND WHEN IT REACHES AT TOP MOST POINT ALL OF
ITS KINETIC ENERGY LOSES AND CONVERTS INTO POTENTIAL ENERGY.HENCE OPTION(A) IS CORRECT.
Which statements best describe X-rays? Check all that apply.
X-rays are a form of electromagnetic radiation with high energy and short wavelength. They are used for medical imaging to see inside the human body, for industrial purposes to inspect materials and for scientific research.
X-rays are produced by high-energy photons that pass through an object and create a shadow image on a detector on the other side. The different densities of the material in the object cause variations in the amount of X-rays that pass through, producing a visual representation of the object's internal structure.
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Missing parts;
Which statements best describe x-rays? check all that apply. x-rays are electromagnetic waves. x-rays are longitudinal waves. x-rays are mechanical waves. x-rays are transverse waves. x-rays travel at the speed of light. x-rays travel at the speed of sound.
which of the following statements about multiple sclerosis (ms) is false? which of the following statements about multiple sclerosis (ms) is false? ms is characterized by increases in conduction velocity of the optic nerve. magnetic resonance imaging can help diagnose some cases of ms ms is characterized by demyelination of axons along with some axon loss symptoms of ms may include weakness, lack of coordination, impaired vision and speech.
The following are statements about multiple sclerosis (MS):
1. MS is characterized by increases in conduction velocity of the optic nerve
2. Magnetic Resonance Imaging can help diagnose some cases of MS
3. MS is characterized by demyelination of axons along with some axon loss
4. Symptoms of MS may include weakness, lack of coordination, impaired vision and speech.
The first statement about multiple sclerosis (MS) is false. It is stated that MS is characterized by increases in conduction velocity of the optic nerve.
What is Multiple Sclerosis (MS)?An immune-mediated attack on the central nervous system characterizes the chronic, inflammatory disease known as multiple sclerosis (MS). This inflammatory disease can be diagnosed by some diagnostic techniques, such as MRI, Medical history suggestive of CNS process, and Neurological exam findings.
The diagnostic technique that provides the most accurate, non-invasive method of imaging the brain, spinal cord, or other parts of the body right now is magnetic resonance imaging (MRI). It is the go-to imaging technique for determining an MS diagnosis and tracking the progression of the condition. In actuality, MRI confirms the MS diagnosis in over 90% of patients. (the second statement is true)
MS is characterized by chronic inflammation, demyelination, gliosis, and neuronal loss, loss of vision in an eye, loss of power in an arm or leg or a rising sense of numbness in the legs. (the last statement is true; meanwhile the first statement is incorrect; MS is not characterized by an increase in the optic nerve, but rather the opposite.)
It is generally known that the main factor behind the progressive neurologic impairment that the majority of MS patients experience is the loss of axons and neurons. (the third statement is true)
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Can someone please help answer these 5 questions the picture is attached
Based on the diagram of the figure:
1. The acceleration of the train between 0 and 20 s = 0.5 m/s²
2. The acceleration of the train between 20 and 40 s = 0.5 m/s²
3. The train's speed at 80 second = 15 m/s
4. The acceleration of the train between 100 and 120 s = 0.75 m/s² (deceleration)
5. The train travel (when the train's speed 10 m/s) = 200 m
The equation of the acceleration:
a = Δv/t
Where,
a = acceleration (m/s²)
Δv = velocity (m/s)
t = time (s)
Hence,
1. The acceleration between 0 and 20:
a = 10/20
= 0.5 m/s²
2. The acceleration between 20 and 40:
a = 10 / (40 - 20)
= 0.5 m/s²
3. The train's speed at 80 = 15 m/s
4. The acceleration between 100 and 120:
a = 15/20
= 0.75 m/s² (deceleration)
5. The distance:
d = speed x time
= 10 x 20
= 200 m
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A rocket propels itself with a force of 5000N. Its mass is 500kg. If they rocket stops propelling itself at the 2 minute mark, how long will it take for the rocket to touch the ground(starting from when the rocket lifts off)?
Two stones released at the same time with one thrown vertically upward from the ground with a velocity of 20m/s and the other dropped form a height collided with each other 2 seconds after their release. determine this height (g=9.8m/s^2
Answer:
The height at which the two stones collided is 78.4 meters, calculated using the formula h = u^2/2g, where u = 20 m/s and g = 9.8 m/s^2.
Explanation:
A stationary object of mass 4 kg is set in motion by a net force of 50 Newton if the object at a speed of 5 m per second in time calculate the value of time
The stationary object achieves the speed of 5 m/s at time 0.4 second.
What is acceleration?
Acceleration is rate of change of velocity with time. Due to having both direction and magnitude, it is a vector quantity. Si unit of acceleration is meter/second² (m/s²).
Mass of the object = 4 kg.
Force applied on it = 50 Newton.
Acceleration of the object = (50 ÷ 4) m/s² = 12.5 m/s²
Let at time t second, the speed of the object = 5 m/s.
Hence, the time taken to achieve the speed of 5 m/s is = (5 ÷ 12.5) second
= 0.4 second.
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: Which of the following are evidence of past liquid water on the Martian surface? Sort as true or false Items (5 iterns) (Drag and drop into the appropriate area below) fossils minerals that form underwater rounded pebbles present day oceans dry river beds Categories True False
True: - Fossils - Minerals that form underwater - Rounded pebbles - Dry river beds and False: - Present day oceans.
What is Fossils?Fossils are the remains or traces of organisms that lived in past geological ages. They can be found in rocks, sediment, or soil and are usually the preserved remains of animals and plants that lived millions of years ago. Fossils can be bones, teeth, shells, or other body parts. They can also include footprints, nests, burrows, or other evidence of animal behavior. Fossils provide scientists with important information about ancient life and the Earth’s history. By studying fossils, scientists can learn how animals and plants lived, how they evolved, how they interacted with each other, and how their environment changed over time.
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A 0.150-kg glider is moving to the right with a speed of 0.80 m/s on a frictionless, horizontal air track. The glider has a head-on collision with a 0.300-kg glider that is moving to the left with a speed of 2.20 m/s. Find the final velocity (magnitude and direction) of each glider if the collision is elastic. is this question passible?
Answer: The final velocity (magnitude and direction) of the 0.150-kg glider is 4.84 m/s to the right and the final velocity (magnitude and direction) of the 0.300-kg glider is 1.48 m/s to the left.
Explanation:
Yes, this question is possible to solve.
In an elastic collision, the total momentum of the two objects before the collision is equal to the total momentum after the collision. We can use this principle to find the final velocities of the two gliders.
Let's call the final velocity of the 0.150-kg glider "v1" and the final velocity of the 0.300-kg glider "v2". The initial momentum of the 0.150-kg glider is 0.150 kg * 0.80 m/s = 0.12 kg m/s. The initial momentum of the 0.300-kg glider is 0.300 kg * -2.20 m/s = -0.66 kg m/s. The total initial momentum is 0.12 kg m/s + (-0.66 kg m/s) = -0.54 kg m/s.
The total momentum after the collision is equal to 0.150 kg * v1 + 0.300 kg * v2 = 0.
Solving for v1 and v2, we find:
v1 = (0.300 kg * 2.20 m/s + 0.66 kg m/s) / 0.150 kg = 4.84 m/s to the right
v2 = (0.12 kg m/s - 0.150 kg * 0.80 m/s) / 0.300 kg = -1.48 m/s to the left
So the final velocity (magnitude and direction) of the 0.150-kg glider is 4.84 m/s to the right and the final velocity (magnitude and direction) of the 0.300-kg glider is 1.48 m/s to the left.
a spring is hanging from the ceiling. attaching a 560 gg physics book to the spring causes it to stretch 25 cmcm in order to come to equilibrium.part awhat is the spring constant?express your answer with the appropriate units.view available hint(s)for part aactivate to select the appropriates template from the following choices. operate up and down arrow for selection and press enter to choose the input value typeactivate to select the appropriates symbol from the following choices. operate up and down arrow for selection and press enter to choose the input value typekk
The value of the spring constant is 8704 N/m.
The spring constant (k) can be found using Hooke's law, which states that the force required to stretch or compress a spring is proportional to the distance it is stretched or compressed.
Mathematically, it can be expressed as:
F = -kx
where F is the force applied to the spring,
k is the spring constant, and
x is the distance the spring is stretched or compressed.
Since the force applied to the spring is equal to the weight of the book, we can write:
F = mg = -kx
where m is the mass of the book and
g is the acceleration due to gravity.
Substituting the given values, we get:
560 g * 9.8 m/s^2 = -k * 0.25 m
Dividing both sides by -0.25 m and solving for k,
we will get it as:
k = (560 g * 9.8 m/s^2) / 0.25 m
k= 8704 N/m
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A student wants to determine the Stefan-Boltzmann constant, sigma. The student then measures the luminosity, surface area, and temperature of an object. The temperature of the object is changed several times. The student measures the new temperature and luminosity for each of the new cases. The surface area is assumed to be the same in each case. The data is then plotted to determine the Stefan-Boltzmann Law. L=σAT 4 To determine the Stefan-Boltzmann constant we need to transform the data, that according to the theory will be a 4th degree polynomial, to form a straight line. How do we transform the data so that the graph will be linear? What is the slope of the line? What are the labels for the vertical and horizontal axis of the graph?
The vertical axis of the graph is L/T^4 and the horizontal axis is T.
The units for L/T^4 should be W/m^2K^4, and the units for T should be in Kelvin.
To determine the Stefan-Boltzmann constant, the data must be transformed so that the relationship between luminosity (L) and temperature (T) follows a straight line.
This can be achieved by plotting L/T^4 against T.
According to the Stefan-Boltzmann Law, L = σAT^4,
where A is the surface area and
σ is the Stefan-Boltzmann constant.
So, L/T^4 = σA, which is a constant value for a given surface area.
The slope of the line is equal to σA.
To transform the data so that the graph will be linear, we need to plot the natural logarithm of luminosity (L) against the reciprocal of the temperature (1/T).
This will result in a straight line, as the equation for the Stefan-Boltzmann Law can be transformed into a linear equation by taking the natural logarithm of both sides:
ln(L) = ln(σAT^4) = 4ln(σ) + 4ln(A) - 4/T
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Observe the example of foe on the box. The give a complete answer to each question below. Force in Same Direction Force in opposite Direction 1. How would you calculate the net force for example A? Explain. 2. How would you calculate the net force for example 87 Explain.
Answer:
To calculate the net force for example A, you would add the two forces together. Since they are in the same direction, the net force would be equal to the sum of the two forces. 2. To calculate the net force for example 87, you would subtract the force in the opposite direction from the force in the same direction. The net force would then be equal to the difference between the two forces.
The angular speed of Earth is 1.99 x 10-7 radians /seconds.
Yes, that is correct. The angular speed of Earth is 1.99 x 10-7 radians per second. This is equal to 2π radians per year, or 1 revolution per 365.25 days.
The angular speed of the Earth is the rate at which it rotates around its own axis. It is measured in radians per second, and is typically expressed as 2π radians per day, or 7.27 x 10-5 rad/s. The angular speed of the Earth is constant, meaning that it does not change over time. This is important, as it allows us to measure the length of a day and use this to calculate the rate of other processes such as the seasons and the passage of time.
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Which statement describes how fossils can be used to form phylogenetic trees?
Responses
A Through fossils, it is possible to understand the traits of now-extinct organisms
B Fossils allow scientists to understand the behaviors of modern animals.
C Fossils allow scientists to understand the instincts of modern animals.
D Through fossils, it is possible to trace where valuable mineral and oil resources are located.
A. Through fossils, it is possible to understand the traits of now-extinct organisms.
Fossils can be used to form phylogenetic trees by helping scientists to understand the evolutionary relationships between species. By examining the characteristics of fossils, scientists can infer evolutionary relationships and reconstruct the branching pattern of evolutionary history. This information can then be used to construct phylogenetic trees, which are diagrams that show the evolutionary relationships between species. By comparing the similarities and differences in the physical characteristics of different species, scientists can infer which species are more closely related and which are more distantly related. These relationships provide important insights into the evolution of life on Earth and help us to understand the history of life on our planet.
for an incoming air flow of 1.0 kg/s, calculate the rate of heat input required to increase the temperature in the combustor to t04
which of the following is an accurate statement? which of the following is an accurate statement? it is possible to add a scalar quantity to a vector. the magnitude of a vector is independent of the coordinate system used. even though two vectors have unequal magnitudes, it is possible that their vector sum is zero. the magnitude of a vector can be zero even though one of its components is not zero. rotating a vector about an axis passing through the tip of the vector does not change the vector.
The following statements are true: 1) The magnitude of a vector is independent of the coordinate system used. 2) Even though two vectors have unequal magnitudes, it is possible that their vector sum is zero. 3) The magnitude of a vector can be zero even though one of its components is not zero. 4) Rotating a vector about an axis passing through the tip of the vector does not change the vector.
Adding a scalar quantity to a vector is not possible. The magnitude of a vector can only be changed by scalar multiplication or by adding or subtracting vectors.
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Weddell seals foraging in open water dive toward the ocean bottom by swimming forward in a straight-line path tipped below the horizontal. The tracking data for one seal showed it taking 4.0 min to descend 360 m below the surface while moving 920 m horizontally.
A. What was the angle of the seal's path below the horizontal?
B. What distance did the seal cover in making this dive?
C. What was the seal's speed, in m/s?
The angle of the seal's path below the horizontal at 22.6 degree, cover 991 m distance at the speed 17.53 m/s.
A. We can use the tangent function to find the angle of the seal's path below the horizontal:
tan(angle) = opposite side / adjacent side = 360 m / 920 m = 0.3913
angle = tan^-1(0.3913) = 22.6 degrees below the horizontal
B. To find the total distance covered by the seal, we can use the Pythagorean theorem:
distance = sqrt(360^2 + 920^2) = sqrt(130320 + 846400) = sqrt(976620) = 991 m
C. To find the seal's speed, we divide the total distance covered by the time taken:
speed = distance / time = 991 m / 4.0 min * (1 min / 60 s) = 17.53 m/s.
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It takes 1.20 X 104 J of work to pull a loaded sled weighing 8.00 X 10² N a distance of
2.00 X 102 m. To do this, a force of 1.20 X 10 2N is exerted on a rope, which makes an
angle with the horizontal.
At what angle is the rope held? Express your answer as a number, space, then the word
degrees.
The angle with which the rope is held is 85.7⁰.
What is the angle made by the rope with horizontal?
The angle with which the rope is held is calculated by applying the following work formula.
W = Fd cosθ
where;
W is the work done by the applied forced is the displacement of the loadθ is the angle made by the applied force with the horizontalcosθ = ( W / Fd )
θ = arc cos ( W / Fd )
The angle with which the rope is held is calculated as;
θ = arc cos ( W / Fd )
θ = arc cos ( 12,000 ) / ( 800 x 200 )
θ = arc cos ( 0.075 )
θ = 85.7⁰
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1. A piece of purple plastic is charged with 1.55×106
extra electrons compared to its neutral state. What is its net electric charge (including its sign) in coulombs?
net electric charge:
2. A glittering glass globe is given a net electric charge of 9.53×10−6
C. Does the globe now have more or fewer electrons than it does in its neutral state?
fewer/more
3. How many more or fewer?
amount:
Each electron provides a charge of -1.602 × 10^-19 coulombs. If there are 8.51 × 10^-6 extra electrons, 8.51 × 10^6 electrons___x = -1.602 × 10^-19*8.51 × 10^6/1=-1.32× 10^-12 coulombs.
What is Electric charge?So the extra electrons provide a charge of 1.32× 10^-12 coulombs. So the net charge is -1.32× 10^-12 coulombs (there are more electrons besides those extra electrons, but there are also protons, so they don’t affect the net charge – the other electrons just compensate the charge of the protons).
When the number of protons in the nucleus is different from the number of electrons around that nucleus, an electrical charge is created in the atom of matter. A negative charge is present in an atom if there are more electrons than protons.
A positive charge is present in an atom if there are more protons than electrons. The amount of charge that an atom carries is always a multiple of the elementary charge, or the charge that one electron or one proton carries.
Therefore, Each electron provides a charge of -1.602 × 10^-19 coulombs. If there are 8.51 × 10^-6 extra electrons, 8.51 × 10^6 electrons___x = -1.602 × 10^-19*8.51 × 10^6/1=-1.32× 10^-12 coulombs.
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Why did the coin rolling on the floor slow down and stop?
When you remove your finger from the coin, sliding friction between the coin and the paper causes it to slow down and stop because it changes the kinetic energy into other sorts of disordered energy, such as heat. Because of static friction and gravity, the coin began at rest.
What is friction?The force that stops solid surfaces, fluid layers, and material components from moving against one other is known as friction. There are several types of friction: Dry friction is the force that opposes the relative lateral motion of two solid surfaces that are in contact. Friction is the force created when one object rubs against another. Friction happens when two objects rub against one another. Friction works in the opposite direction of motion. The amount of friction is determined by the materials used to create the two surfaces.
Here,
When you stop touching the coin, there is sliding friction between the coin and the paper, which causes it to slow down and halt because it converts the kinetic energy into other types of disordered energy, such as heat. The coin began at rest due to static friction and gravity.
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two light sources illuminate a screen as shown. the sources are in phase and have the same wavelength, but source a is more intense than source b. the screen is far enough from the sources that each source individually illuminates the screen uniformly (the same intensity everywhere on the screen). when only source a is on, the intensity on the screen is ia
When only source A is on, the intensity of the light on the screen is ia, which is the intensity of light from source A.
What is intensity?Intensity is a measure of the strength or power of a stimulus, usually referring to sound, light, or a force. It is measured in terms of the amount of energy or power per unit area, and is often expressed in decibels (dB) for sound, or watts per square meter (W/m2) for light. Intensity is an important concept in physics, as it affects the way energy is transmitted and absorbed. In everyday life, intensity can be used to describe the volume or brightness of a sound or light, or the strength of an emotion or feeling.
This is because the screen is far enough from the sources that each source individually illuminates the screen with the same intensity everywhere on the screen. Since source A is more intense than source B, the intensity of light on the screen from source A would be higher than from source B.
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A string with a linear mass density of = 0.0090 kg/m is tied to the ceiling. A 27 kg mass is tied to the free end of the string. The string is plucked, sending a pulse down the string. Estimate the speed of the pulse (in m/s) as it moves down the string.
The speed of the pulse is 173.2 m/s.
What is the speed of the pulse?We have to note that the speed of the pulse would depend on the mass of the spring and also on the density of the pulse. In this case, we can see that a string with a linear mass density of = 0.0090 kg/m is tied to the ceiling. A 27 kg mass is tied to the free end of the string.
We have that;
v = √ M/d
v = velocity
M = mas of the spring
d = density of the spring
v = √ 27 Kg/0.0090 kg/m
V = 173.2 m/s
Thus the pulse would have a speed of 173.2 m/s.
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When objects are in free fall on earth, to accelerate at -9.8 m/s, which of the following must be neglected?
A. initial velocity
B. mass and weight
C. air resistance
D. surface area
Insulator: After several contacts with the charged ball, how is the charge on the rod arranged? negative charge on end A with end B remaining almost neutral; When the sphere is touched to end A, some of its negative charge will be deposited there
After several contacts with a charged ball, the charge on the rod will become negatively charged on end A with end B remaining almost neutral.
When the charged ball is touched to end A, some of its negative charges will be transferred to the rod and deposited at end A, increasing the negative charge on that end. End B will remain neutral or nearly neutral since no charge has been transferred to it.
The process of charging a rod by contact with a charged ball is called "contact charging." In this process, electrons from the charged ball transfer to the rod, causing the rod to become charged.
When the charged ball is touched to end A of the rod, electrons from the ball are transferred to the rod and accumulate at that end, giving it a negative charge.
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