Correct option is B, explosion of the primer mix explosion of the primer mix causes a bullet or projectile to travel down the barrel of a firearm and exit at the muzzle.
An object that is propelled by the application of an external force and then moves freely while being affected by gravity and air resistance is referred to as a projectile. Projectiles are generally used in sports and warfare, despite the fact that any item traveling through space is a projectile.
Projectile motion has many uses in both physics and engineering. Examples include the motion of any ball in sports, fireworks, and meteors entering the Earth's atmosphere. These things are known as projectiles, and the path they take is known as a trajectory.
An item or particle that is propelled into a gravitational field, such as from the surface of the Earth, and moves along a curved route only under the influence of gravity is said to be experiencing projectile motion.
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assume the motions and currents mentioned are along the x axis and fields are in the y direction.
(a) Does an electric field exert a force on a stationary charged object?
Yes/No
(b) Does a magnetic field do so?
Yes/No
(c) Does an electric field exert a force on a moving charged object?
Yes/No
(d) Does a magnetic field do so?
Yes/No
(e) Does an electric field exert a force on a straight current-carrying wire?
Yes/No
(f) Does a magnetic field do so?
Yes/No
(g) Does an electric field exert a force on a beam of moving electrons?
Yes/No
(h) Does a magnetic field do so?
Yes/No
Electric field is a physical field occupied by a charged particle on another particle in its surrounding. It is denoted by E. It is an invisible field.
a) Yes, an object with charge q experiences force from an electric field of intensity E. This force still acts even when the item is stationary because, as we can see, it is independent of the speed of the object.
b) No, the magnetic force produced by an object with charge q and speed v is equal to the magnetic force produced by an object with charge q and speed v in a magnetic field of intensity of B.
c) The electric force is still very strong. Point (a) shows that the electric force is still present and unaffected by the charge's speed.
d) The magnetic force F is no longer zero because the object is now moving at a specific speed v.
e) The answer is that the electric field does exert a force on the charges moving along the wire because it does so constantly to a charge.
f) Because a magnetic field always exerts a force on a moving charge, the charges flowing through the wire are being affected by the magnetic field. This is because the current in the wire is made up of charges travelling at a constant v.
g) Since an electric field exerts force and electrons have an electric charge, this argument makes sense. As a result, an electric charge and, by extension, an electron beam are always under the influence of an electric field.
h) The magnetic force is constant since the speed of the electrons in the beam is constant (v). V is not equal to zero, hence the magnetic field is not zero either.
As a result, an object with charge q experiences a force from an electric field of intensity E. This force still acts even when the item is stationary because, as we can see, it is independent of the speed of the object.
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give answer in points
What is the difference between potential difference and electromotive force (e.m.f)?
Answer:
The electromotive force is the amount of energy given to each coulomb of charge. The potential difference is the amount of energy utilized by one coulomb of charge. The electromotive force is independent of the circuit's internal resistance. The potential difference is proportional to the circuit's resistance.
a student measures the volume of a liquid using a measuring cylinder. what else needs to be measured by the student in order to determine the density of the liquid
A. depth of the liquid in the cylinder
B. mass of the cylinder
C. mass of the liquid
D. temprature of the liquid
pls it's urgent Tuesday's the deadline
Answer:
Mass of the liquid (C)
Density is the ratio of mass to volume
a smooth wooden 40.0 n block is placed on a smooth wooden table. a force of 14.0 n is required to keep the block moving at constant velocity. what is the coefficient of sliding friction between the block and the table top? if a 20.0 n brick is placed on top of the wooden block, what force will be required to keep the block and brick moving at constant velocity?
The coefficient of sliding friction between the block and the table top is 0.35. The force will be required to keep the block and brick moving at constant velocity is 21 N.
The coefficient of sliding friction (μ_s) is given by the ratio of the force of friction to the normal force.
For the wooden block on the table top:
Fs = μs * N
where
Fs = 14.0 N (force required to keep the block moving at constant velocity)
N = 40.0 N (normal force on the block)
So
μs = Fs / N = 14.0 N / 40.0 N = 0.35
When a 20.0 N brick is placed on top of the wooden block, the normal force on the block increases to 60.0 N (40.0 N + 20.0 N).
The force required to keep the block and brick moving at constant velocity can be calculated using the same formula as above:
Fs = μs * N
where
N = 60.0 N (new normal force)
so
Fs = μs * 60.0 N = 0.35 * 60.0 N = 21.0 N
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the air in an inflated balloon (defined as a system of government) is warmed over a toaster and absorbs 125 j id heat. as ir does 79 kj of work. what is the change in internal energy for the system
The change in internal energy of the air in the inflated balloon (defined as the governing system) is heated over a toaster and absorbs 125J of heat. As it expands, it does 78 kJ of work = - 78,875 J
Energy cannot be generated or destroyed; instead, it can only be transformed from one form to another, according to the basic law of thermodynamics.
The formula:
ΔE = q + w
ΔE = the internal energy (J)
q = heat added/taken away (J)
w = the system's or its own work (J)
The system absorbed heat since it was already warm, so:
q = positive.
It worked because the gas expanded, so:
w = negative.
ΔE = q + w
= 125 J + (-79 x 10³ J)
= - 78,875 J
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g objects and possessions can become viewed as part of the self when individuals are able to exercise power and control over them in much the same way as they control the actions of an arm or a leg describes what?
This describes the concept of self-extension. When individuals are able to exercise power and control over objects and possessions, they may begin to view these things as extensions of themselves.
What impact do possessions have on a person's sense of self?We may understand and express our self-identity through our possessions. When opportunities for receiving external validation of self are scarce, as can be the case as a result of institutionalization, for the elderly, things serve as crucial archives of memories of one's self-identity in the past.
What type of self-concept considers possessions to be the natural extensions of the self?William James claimed that the things, places, or even persons that carry the label "my" are what make up the material self. These things are seen as extensions of people's identities. For instance, your clothing, which you refer to as "my wardrobe," expresses certain facets of your personality.
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ound travels at 343m/s in the air. what distance from the student, in meters, is the lightning strike?
If it took 5.5 seconds for the sound of the lightning strike to reach the student, then the distance of the lightning strike from the student is 1886.5 meters.
To determine the distance from the student to the lightning strike, you would need to know the time it took for the sound of the strike to reach the student. The speed of sound in air is approximately 343 meters per second (m/s). By using the formula:
distance = speed x time
If it takes 5.5 seconds for the sound of the lightning strike to reach the student, then the distance of the lightning strike from the student is:
distance = 343 meters/second × 5.5 second
distance = 1886.5 meters
Therefore the distance is 1886.5 meters.
Also, keep in mind that the speed of sound varies with temperature, humidity, and pressure. So, if you want to get an accurate result, you'll need to take these factors into account as well. Furthermore, it's important to remember that sound travels in a straight line, so it's not always the same distance as the visual distance of the lightning strike.
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Your question seems incomplete, but i assume the complete question was:
"Sound travels at 343m/s in the air. What distance from the student, in meters, is the lightning strike if it took 5.5 seconds for the sound of the lightning strike to reach the student?"
a sample of blood is placed in a centrifuge of radius .15 m. the mass of a red corpuscle is 3.0 x 10-16 kg, and the magnitude of the force required to make it settle out of the plasma is 4.0 x 10-11 n. what does the angular speed need to be?
A red corpuscle mass 3.0 10-16 kg, and 4.0 10-11 N of force is necessary for it to pull away from the plasma. Angle of rotation = = /t.
What does it mean in mass?In physics, mass is a statistical expression of inertia, a basic characteristic of all matter. It essentially refers to a body of matter's resistance to changing its speed or location in response to the administration of a force.
What do mass and an example mean?The sum of matter that makes up every object or body is the greatest way to understand mass. Everything that we can see has mass. For instance, even air has mass, as does a table, a desk, your sofa, a game, a glass, etc.
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if the two bodies in part (a) were the same size, what would be the ratio of the heat emitted by the hotter object to the heat emitted by the colder one?
the proportion of heat produced by the hotter item to that by the cooler one
What connection exists between the change in temperature and the transfer of heat?
temperature object. For a gas, a shift in temperature and heat transfer are connected. Heat emitted = Stefan's constant T4 if the two bodies are separate.
We now know that the ratio of heat released to a ratio of degrees will be 4.Heat(hotter): Heat: 600:300 = 16:1 Cooler: 300:600
In water, how does heat transfer happen?
Heat is transferred by a fluid, including water or air, by convection. As the fluid (gas) flows from one place to another, it also transfers heat. A current is the term used to describe the movement of warm water or air.
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sirius is a blue-white star with a surface temperature of about 9800 k. what is most likely the mass of sirius?
sirius is a blue-white star with a surface temperature of about 9800 k. 2.0 solar mass is most likely the mass of sirius.
What do mass and an example mean?The amount if matter that makes up every object or body is the greatest way to understand mass. Everything that we can see has mass. Examples of objects with mass include a table, a desk, your bedroom, a football, weight glass, and even air.
How is mass determined?Scientists frequently use balances to quantify mass. Using an electronic balance or a beam balance, one may directly determine the mass of solids. A liquid's mass can be calculated by measuring its volume and using the density table to determine the liquid's density. The kilogram is the SI measure of weight (Kg).
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A light bulb is 60cm from a concave mirror with a focal length of 20cm. Use ray tracing to determine the location of its image. Is the image upright or inverted? Is it real or virtual. Verify your results by doing the calculations.
Ray tracing is a method used to determine the location and characteristics of the image created by a mirror.
To solve this problem, first draw a ray diagram to help visualize the situation. In this diagram, draw a line from the light bulb to the center of the mirror, which is the focal point. Then draw a ray that reflects off the mirror and back towards the focal point. This ray is called the principal ray.
Using the principal ray, you can draw a line that is parallel to the principal ray and intersects the focal point. This line will intersect the mirror at a point that is the same distance from the mirror as the light bulb is from the focal point. This is the location of the image.
To determine whether the image is upright or inverted, draw another ray from the light bulb, parallel to the principal ray. If this ray reflects off the mirror and intersects the focal point, then the image is upright, and if it reflects off the mirror and does not intersect the focal point, then the image is inverted. In this case, the image is inverted.
To determine if the image is real or virtual, draw a line from the image to the center of the mirror. If this line intersects the mirror, then the image is real, and if it does not intersect the mirror, then the image is virtual. In this case, the image is virtual.
To verify these results, you can calculate the location of the image using the mirror equation: 1/f = 1/d1 + 1/d2, where f is the focal length, d1 is the distance from the light bulb to the mirror, and d2 is the distance from the image to the mirror. Plugging in the values from this problem, we get 1/20 = 1/60 + 1/d2, which simplifies to d2 = 120 cm. This confirms that the image is 120 cm from the mirror, which is the same location as determined by ray tracing.
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10) The period of a pendulum is the time it takes to complete a full swing. For this picture, it would be the time taken to swing from point A to point C, and then back to point A. Above you can see the equation for describing this time period. It is counterintuitive, but, based on this, you can see that changing the mass of the bob would
Have no affect on the period of the pendulum. This is because the equation does not include the mass, which means that the period of the pendulum is independent of the mass of the bob.
What is the pendulum ?
A pendulum is a weight suspended from a pivot so that it can swing freely. It is a device used to measure time, as the swing of the pendulum is regular and can be used to keep track of the passing of time. Pendulums are also used in clocks, swinging back and forth to mark the seconds and minutes. In addition to clocks, pendulums are also used in scientific experiments, such as determining the acceleration due to gravity. The length of the pendulum and the period of its swing are related, with a longer pendulum having a longer period. Pendulums can be used to measure the strength of a gravitational field, as the period of the pendulum is affected by the local strength of the gravity.
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a body of mass m is thrown at an angle theta with the horizontal with an initial velocity v0. find the mean power developed by gravity over the whole time of motion of the body
A body of mass m has been thrown with an initial position of v0 at an angle θ with the horizontal. determine the average force that gravity develops over
Describe a motion response?The steady shift in an object's location over time is known as motion. Movement, distance, velocity, acceleration, time, and speed are used to define motion.
Which of the two motions are they?Motion can be classified as translational, rotational, periodic, or non-periodic. Translational motion is a type of motion where all components of an item by the same amount in the same amount of time.
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the eye changing light waves into impulses and the ear changing sound waves into impulses are examples of:
The eye changing light waves into impulse and the ear changing sound waves into impulses are examples of transduction.
Transduction is the method of translation of arriving signal into a command transfer to the brain by a sensory receptor. It starts when stimulus changes the membrane potential of a receptor cell, which converts the signal energy in a stimulus and then into an electrical signal. Receptors are categorized into two main categories: exteroceptors, and interoceptors. Exteroceptors receive external sensory stimuli, and interoceptors receive internal sensory stimuli.
in visual system, cone and rods are the sensory cells that convert the physical light energy signal into electrical signal. In auditory system, hair cells transduced the sound vibrations into electrical signal and transfer them to the brain.
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"the horizontal surface on which the block slides is frictionless. the speed of the block before it touches the spring is 6.0 m/s. how fast is the block moving at the instant the spring has been compressed 15 cm? (assume k = 2.0 kn/m.)"
The block is moving at the speed of 5.61 m/sec at the instant the spring has been compressed 15 cm. If the mass possessed by the block is 10 kg.
Let the mass of the block, m = 10 kg
Speed of the block before touching the spring, v = 6.0 m/s
Let the speed of the block after compressing the spring = V
k = 2.0 KN/m
By the law of conservation of energy,
0.5mv² = 0.5kx² + 0.5mV²
10 × 6² = 2000 × 0.15² + 10 × V²
V² = (10 × 6² - 2000 × 0.15²)/10
V² = 31.5
V = 5.61 m/s
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soccer fields vary in size. a large soccer field is 115 m long and 85 m wide. what are its dimensions in feet and inches?
Length in feet and inches:: 378 feet 6 inches
Width in feet and inches: : 279 feet 2 inches
what is dimensions?Dimensions are the measurement of something's size, such as length, width, and height. Dimensions can be used to describe the overall size of an object, or more specifically, its components.
They can also be used to quantify the area or volume of an object. Dimensions are usually expressed in metric units such as centimeters, meters, or millimeters, although imperial units are also used.
Calculation:
Length: 115 m x 3.28 ft/m = 378.8 ft ≈ 378 ft 6 inches
Width: 85 m x 3.28 ft/m = 279.2 ft ≈ 279 ft 2 inches
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what happens to a sound wave travel when it trave fro air into water a() its interneity increases g
Option d is Correct. Since crests move away from the boundary quicker than they move up to the border, the sound wave speed will increase when the wave crosses the boundary into the ocean.
Several characteristics will alter as a sound wave moves from air to water. It causes the distance between crests (the wavelength) to grow. Due to some sound being reflected off the water's surface, the sound intensity in the water will be lower than it was in the air.
Since a crest moves away from the border every time a crest approaches the boundary, the frequency (number of crests passing each second) will remain constant.
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Correct Question:
What happens to a sound wave as it travels from air into water? (a) Its intensity increases. (b) Its wavelength decreases. (c) Its frequency increases. (d) Its frequency remains the same. (e) Its velocity decreases.
Identify the heat transfer method involved when wind is blowing heat from the fire towards a stand of thick brush.
The heat transfer method involved when the wind is blowing the heat from the fire towards the stand of the thick brush is called convection.
Convection transfers heat by moving liquids or gases. Wildfires typically produce rising columns of gas accompanied by sparks, embers, and burning twigs. These convection columns move downwind of the firefront and carry the embers that serve as the starting point for the fire. This movement of heat energy away from the ground by vertical air movement is called "free convection" or "natural convection." Hot air balloons rise because warm air/wind is less dense than cold air.
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A block of mass mmm is pushed up against a spring with spring constant kkk until the spring has been compressed a distance xxx from equilibrium. What is the work done on the block by the spring?
None of these the work done on the block by the spring.
What is work done?Work is the quantity of energy that an external force transfers to an object when that force moves the object a predetermined distance.
Energy transferred to an object by work is measured as the work done on the object.
Work done on an object when it is subjected to a force that causes a change in position in the same direction as the force. Force applied to and displacement caused by an object are the two main parts of work done on it. In order for a force to exert work on an object, the object must be moved along the force's line of action.
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Full question:
A block of mass mmm is pushed up against a spring with spring constant kkk until the spring has been compressed a distance xxx from equilibrium. What is the work done on the block by the spring?
W=kx2
W=kx2
W=−kx2
W=−kx2
W=0
None of these.
(a) write the expression for y as a function of x and t in si units for a sinusoidal wave traveling along a rope in the negative x direction with the following characteristics: a58.00 cm, l5 80.0 cm, f5 3.00 hz, and y(0, t) 5 0 at t5 0. (b) what if? write the expression for y as a function of xand t for the wave in part (a) assuming y(x, 0) 5 0 at the point x5 10.0 cm.
n of x and t in si units for a sinusoidal wave traveling along a rope in the negative x direction with the following characteristics: a58.00 cm, l5 80.0 cm, f5 3.00 hz, and y(0, t) 5 0 at t5 0. (b) what if? write the expression for y as a function of xand t for the wave in part (a) assuming y(x, 0) 5 0 at the point x5 10.0 cm.
for a - the expression is in the equation of y(x,t) = 58.00 cm * sin (2π (3.00 Hz (t-(-x/240 cm/s)) )) and for b the expression is y(x,t) = 58.00 cm * sin (2π (3.00 Hz (t- (-x/240 cm/s)) + (x/80cm)))
(a) For a sinusoidal wave traveling in the negative x direction with amplitude A = 58.00 cm, wavelength λ = 80.0 cm, frequency f = 3.00 Hz, and y(0, t) = 0 at t = 0, the expression for y as a function of x and t in SI units is given by: y(x,t) = A * sin (2π (f(t-x/v)) ). where v is the speed of the wave, which can be found using the relationship v = fλ. In this case, v = 3.00 Hz * 80.0 cm = 240.0 cm/s.Therefore, the equation becomes: y(x,t) = 58.00 cm * sin (2π (3.00 Hz (t-(-x/240 cm/s)) ))
(b) If y(x, 0) = 0 at the point x = 10.0 cm, then the phase of the wave is shifted by: Φ = 2π (x/λ). so the expression for y as a function of x and t becomes y(x,t) = 58.00 cm * sin (2π (3.00 Hz (t- (-x/240 cm/s)) + (x/80cm)))The wave is still traveling in the negative x direction, but the point x = 10.0 cm is now in phase with the rest of the wave, so it is no longer the starting point for the wave.
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how does pressure at the bottom of a body of water relate to the weight of water above each square meter
The pressure at the bottom of a body of water is the weight of water per one-meter square area.
The force applied perpendicularly to an object's surface per unit area across which that force is dispersed is known as the pressure. The definition of it is force per unit area. It is usually more convenient to use pressure rather than force to describe the influences upon the behaviour of fluid. various units are used to express pressure.
In a column of fluid, pressure increases with depth as a result of the weight of the overlying fluid. As a result, the bottom of a fluid column suffers more pressure than the top, as does an object submerged in the column.
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Starting at its rightmost position, it takes 2 seconds for the pendulum of a grandfather clock to swing a horizontal distance of 18 inches from right to left and 2 seconds for the pendulum to swing back from left to right. Which of the following equations models d, the horizontal distance in inches of the pendulum from the center as a function of time, t, in seconds
d = 18sin(πt/2)
This equation models the horizontal distance of the pendulum from the center as a function of time.
What is pendulum?
A pendulum is a weight suspended from a pivot so that it can swing freely. Pendulums are often used to regulate time in clocks, as well as for scientific experiments to study gravity and other forces.
The pendulum swings 18 inches from right to left in 2 seconds, so we can use the equation d = 18sin(πt/2). To explain this, note that the pendulum takes 2 seconds to swing from right to left and back to right.
This means that it takes a total of 4 seconds for the pendulum to complete one period. Therefore, we can divide the time by 4 seconds to find the period.
This gives us πt/2. We then multiply this period by 18, the horizontal distance of the pendulum from the center, to get the equation d = 18sin(πt/2).
Therefore, d = 18sin(πt/2)
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what mass flow (in kg/d) of ammonium-n passes by any point in the lake after these two sources have become mixed?
The mass flow of ammonium-n passed by any point in the lake after the two sources have become mixed depends on the combined rate of release from the sources.
What is the mass ?
The amount of matter that makes up a thing is measured by its mass.. It is typically measured in kilograms or grams and is an important quantity in physics and chemistry. Mass is different from weight, which is a measure of the force of gravity on an object. Mass is an intrinsic property of an object, meaning it is independent of the object's environment. Mass is conserved, meaning it cannot be created or destroyed, only changed through physical or chemical reactions.
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Two 1.70 kg balls are attached to the ends of a thin rod of length 70.0 cm and negligible mass. The rod is free to rotate in a vertical plane without friction about a horizontal axis through its center. With the rod initially horizontal (the figure), a 32.0 g wad of wet putty drops onto one of the balls, hitting it with a speed of 1.56 m/s and then sticking to it. (a) What is the angular speed of the system just after the putty wad hits
The end of the a thin rod with a length of 0.452 m and very little mass is moving up the plane at an acceleration of 0.80 m/s2 whereas the rod is horizontal.
Two distinct formulas are used to determine the angular speed,The speed of an object in rotation is known as its angular speed. In radians, the distance traveled is denoted by the symbol. The amount of time is expressed in seconds. As a result, the angular speed is expressed in radians per second, or rad/s.
Is angular speed and angular velocity equivalent?A scalar measurement of the rotating item is its angular speed. A vector representation of the rotational motion is the angular velocity. Only the magnitude of an angle's speed is specified. The magnitude and direction are both specified by angular velocity.
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during spring semester at mit, residents of the parallel buildings of the east campus dorms battle one another with large catapults that are made with surgical hose mounted on a window frame. a balloon filled with dyed water is placed in a pouch attached to the hose, which is then stretched through the width of the room. assume that the stretching of the hose obeys hooke's law with a spring constant of 100 n/m. if the hose is stretched by 5.00 m and then released, how much work does the force from the hose do on the balloon in the pouch by the time the hose reaches its relaxed length?
The work is found to be =1.25×10 3 J. if a spring constant of 100 n/m. if the hose is stretched by 5.00 m and then released .
How do u define work?Work is force applied over distance. Examples of work include lifting an object against the Earth's gravitation, driving a car up a hill, and pulling down a captive helium balloon. Work is mechanical manifestation of energy. The standard unit of work is the joule ,equivalent to a newton.
Why do we define work?The definition of work in physics reveals its relationship to energy whenever work is done, energy is transferred. Work is the product of the component of the force in the direction of the displacement and the magnitude of this displacement.
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after the collision, the stick and puck will rotate about their combined center of mass. how far is this center of mass from the point at which the puck struck?
The distance from the point of collision to the center of mass of the stick and puck will depend on the mass of the stick and puck, and their relative positions at the time of collision.
The center of mass (COM) of an object is the point at which all of its mass is concentrated, and around which it rotates. The COM of two or more objects is the point at which the masses of the objects balance each other.
In the case of a collision between a stick and a puck, the COM of the two objects will be located at a point where the distance from the COM to the point of collision is proportional to the mass of the object. This means that if the stick and puck have different masses, the COM will be closer to the more massive object.
To know the exact distance of the center of mass from the point of collision, more information is needed like mass and the relative positions of both objects before the collision.
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The amount of energy needed to apply a force of 1 newton over a distance of 1 meter is also called a.
Answer:
Explanation:
The amount of energy needed to apply a force of 1 newton over a distance of 1 meter is also called a joule. The joule (symbol: J) is the SI derived unit of energy. It is the energy transferred to an object when a force of one newton acts on that object in the direction of its motion through a distance of one meter. It is also the amount of energy required to heat 1 gram of water by 1 degree Celsius.
A sinusoidal wave of frequency 500 Hz has a speed of 350 m/s. (a How far apart are two points that differ in phase by pi/3 rad? (b) What is the phase difference between two displacements at a certain point at times 1.00 ms apart?
(a) To find the distance between two points that differ in phase by π/3 radians, we can use the wavelength of the wave, which is given by the speed of the wave divided by the frequency:
Wavelength = Speed of wave / Frequency
Given that the frequency is 500 Hz, the wavelength is:
Wavelength = 350 m/s / 500 Hz = 0.7 m
The phase difference between the two points is equal to the difference in the phase of the wave at these points. The phase difference in radians is given by the product of the wave number and the distance between the points.
The wave number is equal to 2pi/wavelength, so:
k = 2π / wavelength = 2*π / 0.7 m = 8.6 rad/m
The distance between the two points that differ in phase by pi/3 rad is given by:
Distance = π/3 / k = π/3 / 8.6 rad/m = 0.035 m
(b) To find the phase difference between two displacements at a certain point at times 1.00 ms apart, we can use the angular frequency of the wave, which is given by the product of 2π and the frequency:
ω = 2π * frequency = 2π * 500 Hz = 3141.59 rad/s
The phase difference between two displacements at a certain point at times 1.00 ms apart is given by the product of the angular frequency and the time interval.
Given that the time interval is 1.00 ms = 0.001 s, the phase difference is:
Δφ = ω * time interval = 3141.59 rad/s * 0.001 s = 3.14 rad
Therefore, the phase difference between two displacements at a certain point at times 1.00 ms apart is 3.14 rad.
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Burning fossil fuels does not substantially impact the amount of carbon in
the atmosphere over time.
O True
O False
Answer: False.
Explanation:
Over the last century, burning of fossil fuels like coal and oil has increased the concentration of atmospheric carbon dioxide (CO2). This increase happens because the coal or oil burning process combines carbon with oxygen in the air to make CO2.
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1. the filament of a standard 100-w light bulb has a resistance of about 100 ohms. for this laboratory the glass of the light bulb is unfrosted, so that the filament can be viewed directly. the light bulb is connected to a variable ac voltage source (a variac), which can deliver up to 140 volts ac. when the voltage is low, about 20 volts, the filament is a dull, red color. when the voltage is high, 100 v, how does the filament appear? explain why. hint: at a higher filament temperature, photons with higher energies can be emitted in addition to low energy photons.
With a little additional arithmetic, we can determine that resistance of the filament at 100 watts is roughly 145 ohms using the formula R(Resistance)=E(Voltage)/I(Amps).
How is resistance calculated for a 100 watt bulb?The bulb's power rating is 100 watt, and the rms voltage from across bulb is 220 volts, according to the query. So, to find the resistivity of the bulb, change P=100 watts with Vrms=220 watts in the formula P=V2rmsR. As a result, the bulb has a 484 ohm resistance.
What is the formula for resistance?The ratio of the electric current flowing through it to the voltage applied is the definition of electrical resistance for a component in the circuit or device: if there is consistent resistance over a broad range
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