A 1.0-m-long copper wire of diameter 0.10 cm carries a current of 50.0 A to the east. Suppose we apply to this wire a magnetic field that produces on it an upward force exactly equal in magnitude to the wire's weight, causing the wire to "levitate."
Required:
a. What is the field's magnitude?
b. What is the field's direction?
Answers
Answer:
The classification of that same issue in question is characterized below.
Explanation:
The given values are:
Current, I = 50.0 A
Diameter, d = 0.10 cm
(a)...
As we know,
⇒ Magnetic force = Copper wire's weight
So,
⇒ \(B\times I\times L=M\times g\)
On putting the estimated values, we get
⇒ \(B\times 50\times 1=7.037\times 10^{-3}\times 9.81\)
⇒ \(50B=69.03297\times 10^{-3}\)
⇒ \(B=1.38\times 10^{-3} \ T\)
(b)...
As we know,
⇒ \(m=\delta\times L\times \frac{\pi \ d^2}{4}\)
⇒ \(=8960\times 1\times \frac{\pi \ (0.001)^2}{4}\)
⇒ \(=2240\times \pi \ 0.000001\)
⇒ \(=7.037\times 10^{-3} \ kg\)
Related Questions
HELLPPPP PLZZZ
10. Identify Which gas law
does this graph represent.
Answers
The speed of an object doubles.How does the change in the magnitude of the objects
momentum compare to the change in its kinetic energy
Answers
Answer:
The change in kinetic energy is twice the change in momentum
Explanation:
The momentum of an object is given by:
where
m is the mass of the object
v is its velocity
While the kinetic energy is given by
We want to check how these two quantities change when the speed of the object doubles, therefore when the new velocity is
For the momentum, we have
So, the momentum doubles.
For the kinetic energy, we have
So, the kinetic energy quadruples.
Therefore, the change in kinetic energy is twice the change in momentum.
Which property helps to explain differences in the specific heat capacities of
two substances?
A. The temperature at which each boils
B. Density
C. Latent heat of fusion
D. Forces between molecules
Answers
Answer:
D. Forces between molecules
Explanation:
Specific heat capacity of water can be defined as the amount of heat a gram of water must lose or absorb in order to change its temperature by a degree Celsius. It is measured in Joules per kilogram per degree Celsius (J/kg°C). Generally, the specific heat capacity of water is 4.182J/kg°C and is the highest among liquids.
Mathematically, the specific heat capacity of a substance is given by the formula;
\( c = \frac {Q}{mdt} \)
Where;
Q represents the heat capacity or quantity of heat.
m represents the mass of an object.
c represents the specific heat capacity of water.
dt represents the change in temperature.
Cohesion is a property of water and it typically refers to the attraction between molecules of water which holds them together.
In Science, the property which helps to explain differences in the specific heat capacities of two substances is the forces between molecules.
This ultimately implies that, the more closely bonded the atoms of a substance are, the higher or greater would be the substance's specific heat capacity. Thus, it varies for the various states of matter i.e solid, liquid and gas.
A 2.98-kg object oscillates on a spring with an amplitude of 8.05 cm. Its maximum acceleration is 3.55 m/s2. Calculate the total energy.
Answers
Answer:
a = ω^2 A formula for max acceleration (ignoring sign)
V = ω A formula for max velocity
V^2 = ω^2 A^2 = a A from first equation
E = 1/2 M V^2 = 1/2 * 2.98 * 3.55 * .0805 = .426 J
(kg * m/sec^2 * m = kg m^2 / sec^2 = Joule
HELP
Find the value of each calculation, rounded to the correct number of significant figures.
15.2÷4.368=
Answers
The value of 15.2 ÷ 4.368 rounded to the correct number of significant figures is 3.47985348.
What is significant figures?Significant figures is a digit that is meaningful with respect to the precision of a measurement.
Significant figures constitutes a digit that is nonzero, followed by a nonzero digit, or (for trailing zeroes) justified by the precision of the derivation or measurement.
According to this question, the following arithmetic expression is given:
15.2 ÷ 4.368 = 3.47985348
No. of significant figures: 9No. of decimals: 8Scientific notation: 3.47985348 × 100Therefore, the value of 15.2 ÷ 4.368 rounded to the correct number of significant figures is 3.47985348.
Learn more about significant figures at: https://brainly.com/question/14359464
#SPJ1
3. Find the weight of ethanol that is inside a cylindrical can of diameter 5cm and a height of 50mm. The density of ethanol is 0.81 x 10 kg/m³
Answers
To convert this computed volume from mL to L, simply divide the provided quantity of ethanol by its density: 500g(mL0.789g)(L1000mL)=0.633L. 500g(mL0.789g)(L1000mL) = 0.633L.
Is ethanol bad for people?Ingestion, inhalation, and skin absorption of ethanol are all dangerous. Frequent contact can cause the skin to become dry, which can cause it to become itchy, crack, and peel. The central nervous system, the eyes, and the upper respiratory tract can all be affected by ethanol.
Is ethanol a synonym for alcohol?The term "alcohol" refers to a wide variety of compounds that are created when one atom of carbon interacts with oxygen, hydrogen, and other atoms. Yet, all alcohol in alcoholic beverages is a particular little molecule known as ethanol.
To know more about Ethanol visit:
https://brainly.com/question/25002448
#SPJ1
How many atoms of Na would react with 1 mole of water? 2Na + H20 2NaOH + H2 O A. 2.408 x 1023 #7 O B. 1.204 x 1023 O C. 1.204 x 1024 O D. 2.408 x 1024
Answers
Answer:1.204 x 10^24
Explanation: got it right
1.204 x 10^24 numbers of atoms of Na would react with 1 mole of water. The correct option is C.
What is Avogadro's number?Avogadro's number is a fundamental physical constant representing the number of constituent particles (usually atoms or molecules) in one mole of a substance. It is defined as exactly 6.022 x 10^23 particles per mole. The constituent particles can be atoms, molecules, ions, or any other particles, as long as they are discrete and countable. This number is named after the Italian scientist Amedeo Avogadro, who first proposed the idea that equal volumes of gases at the same temperature and pressure contain the same number of particles. Avogadro's number is important in many fields of science, including chemistry, physics, and materials science, where it is used to convert between the microscopic scale (individual particles) and the macroscopic scale (bulk materials).
Here in the Question,
In the chemical equation 2Na + H2O → 2NaOH + H2O, the stoichiometric coefficients indicate the molar ratios of reactants and products.
Here, the coefficient of Na is 2, which means that 2 moles of Na react with 1 mole of H2O to produce 2 moles of NaOH and 1 mole of H2O. Therefore, the number of atoms of Na that would react with 1 mole of water can be calculated as:
2 moles Na x (6.022 x 10^23 atoms/mol) = 1.204 x 10^24 atoms of Na.
Options A and D are not true because they represent the total number of atoms in 2 moles of Na, which is not relevant to the question.
Option B is not true because it represents the number of atoms in 1 mole of Na, which is also not relevant to the question.
Therefore, the correct option is C. 1.204 x 10^24.
To learn about Redox reaction click:
brainly.com/question/13293425
#SPJ5
A cart with mass m subscript 1 equals 0.25 space k g is at rest on a track. A second cart of mass m subscript 2 equals 0.35 space k g is pushed down the track and collides with it. The carts stick together after the collision. The second cart's speed immediately before the collision is v subscript 02 equals 6.17 space m divided by s. The overall magnitude of the carts' common final velocity is _______________ (enter the numerical value only, in m/s).
Answers
After considering the given data and information we come to the conclusion that overall magnitude of the carts' common final velocity is 3.6 m/s, under the condition that a cart with mass m subscript 1 equals 0.25 space k g is at rest on a track.
Then, we can apply the law of conservation of momentum to evaluate the common final velocity of the carts.
The law of conservation of momentum projects that the total momentum of an isolated system stays constant if no external forces act on it. For this required case, the system is the two carts.
Before the collision, the first cart is in the rest and the second cart has a velocity of 6.17 m/s. Hence, the total momentum of the system before the collision is
p = m₁v₁ + m₂v₂
Here,
m1 and m2 are the masses of the carts and `v1` and `v2` are their velocities.
Staging the given values,
p = (0.25 kg)(0 m/s) + (0.35 kg)(6.17 m/s)
Applying simplification this expression
p = 2.16 kgm/s
Post the event of collision, the two carts stick along each other and move with a common final velocity `v`. The total momentum of the system after the collision is
p = (m₁ + m₂)v
Staging the given values, and evaluate for v
v = p / (m₁ + m₂)
Staging the given values
v = (2.16 kgm/s) / (0.25 kg + 0.35 kg)
v = 2.16/0.6
Applying simplification this expression
v ≈ 3.6 m/s
Then, the overall magnitude of the carts' common final velocity is approximately 3.6 m/s.
To learn more about law of momentum
https://brainly.com/question/18798405
#SPJ1
What is the magnitude of the resultant vector? Round your answer to the nearest tenth. m
Answers
The magnitude of the resultant vector to round the answer to the nearest tenth, we look at the digit in the hundredth's place. If this digit is 5 or greater, we round up. If it is less than 5, we round down.
In the study of physics, we use vectors to represent quantities that have both direction and magnitude. It is often the case that we want to add two or more vectors together to obtain a single vector that represents the net result of these additions. The process of adding two or more vectors together is known as vector addition.The magnitude of the resultant vector is the length of the line that represents it on a scale drawing.
When we add two or more vectors together, the resultant vector is the vector that represents the net result of these additions. To find the magnitude of the resultant vector, we use the Pythagorean theorem, which states that the square of the hypotenuse of a right triangle is equal to the sum of the squares of the other two sides.
In the case of vector addition, the hypotenuse is the resultant vector, and the other two sides are the component vectors. If we have two vectors a and b, the magnitude of the resultant vector is given by the following equation:|R| = √(ax2 + bx2)where R is the resultant vector, a and b are the component vectors, and x is the angle between the vectors.
For example, if the answer is 12.345, we would round it to 12.3.
for more questions on resultant vector
https://brainly.com/question/110151
#SPJ8
Select the correct answer from each drop-down menu. Danica observes a collision between two vehicles. She sees a large truck driving down the road. It strikes a small car parked at the side of the road. Complete the passage summarizing the collision. On colliding, the truck applies a force on the stationary car, and the stationary car applies and opposite force on the truck. The front of the truck is designed to crumple in order to , which protects the well-being of the passengers.
Answers
The front of the truck is designed to crumple during a collision to absorb the impact energy, slow down the collision, and protect the well-being of the passengers. This design feature helps increase the collision time, reduce the forces acting on the passengers, and minimize the risk of severe injuries.
Danica observes a collision between two vehicles. She sees a large truck driving down the road. It strikes a small car parked at the side of the road. On colliding, the truck applies a force on the stationary car, and the stationary car applies an opposite force on the truck. The front of the truck is designed to crumple in order to absorb the impact energy and slow down the collision , which protects the well-being of the passengers.
During a collision, the principle of Newton's third law of motion comes into play. According to this law, for every action, there is an equal and opposite reaction. In the case of the collision between the truck and the car, the truck exerts a force on the car, pushing it forward, while simultaneously experiencing an equal and opposite force from the car.
The purpose of designing the front of the truck to crumple is to increase the collision time and absorb the kinetic energy. When the truck collides with the stationary car, the front of the truck deforms, crumples, and absorbs a significant amount of the impact energy. This process increases the time over which the collision occurs, reducing the forces acting on the passengers and minimizing the risk of severe injuries.
By allowing the truck to crumple, the kinetic energy of the collision is transformed into other forms, such as deformation energy and heat. This energy transformation helps protect the passengers by reducing the deceleration forces acting on them. It also helps prevent the transfer of excessive forces to the car's occupants and reduces the likelihood of severe injuries.
For more such information on: collision
https://brainly.com/question/7221794
#SPJ8
A 35.30-kg box is attached to a light string that is wrapped around a cylindrical frictionless spool of radius 10.0 cm and moment of inertia 4.00 kg * m^2. The spool is suspended from the ceiling, and the box is then released from rest a distance from rest a distance 3.50 m above the floor. How long does it take for the box to reach the floor?
Answers
Answer:
The velocity of the box is related to the angular velocity of the spool, which is given by the equation:
v = r * ω
where r is the radius of the spool and ω is the angular velocity of the spool. The angular velocity of the spool, in turn, is related to the torque applied to the spool by the tension in the string, which is given by the equation:
τ = I * α
where τ is the torque, I is the moment of inertia of the spool, and α is the angular acceleration of the spool.
The tension in the string is equal to the weight of the box, which is given by:
T = m * g
Putting all of these equations together, we can solve for the time it takes for the box to reach the floor. Here's how:
First, we can find the angular acceleration of the spool using the torque equation:
τ = I * α
T = m * g = τ
m * g = I * α
α = (m * g) / I
α = (35.30 kg * 9.81 m/s^2) / 4.00 kg*m^2
α = 86.53 rad/s^2
Next, we can find the angular velocity of the spool using the kinematic equation:
ω^2 = ω_0^2 + 2 * α * θ
where ω_0 is the initial angular velocity (which is zero), θ is the angle through which the spool has turned (which is equal to the distance the box has fallen divided by the radius of the spool), and ω is the final angular velocity (which is what we want to find). Solving for ω, we get:
ω^2 = 2 * α * θ
ω = sqrt(2 * α * θ)
ω = sqrt(2 * 86.53 rad/s^2 * (3.50 m / 0.10 m))
ω = 166.6 rad/s
Finally, we can find the time it takes for the box to reach the floor using the equation:
v = r * ω
v = 0.10 m * 166.6 rad/s
v = 16.66 m/s
t = d / v
t = 3.50 m / 16.66 m/s
t = 0.21 s
if the air was solid and we were liquid how would this work
Answers
Answer:
Chaos.
Explanation:
A pan of water is sitting on an electie over the stove is then turned on to high What will happen to the movement of the particles in the pan?
The particles that make up the pan will move closer together
The parties that make up the pan will not be affected
The particles that make up the pan will speed up
The partides that make up the pan will slow down
Answers
Answer:
The particles that make up the pan will speed up
Explanation:
Need a 5 paragraph essay in the eartsh layers and how they function/ benefit the earth!
Answers
There is more to the Earth than what we can see on the surface. In fact, if you were able to hold the Earth in your hand and slice it in half, you'd see that it has multiple layers. But of course, the interior of our world continues to hold some mysteries for us. Even as we intrepidly explore other worlds and deploy satellites into orbit, the inner recesses of our planet remains off limit from us.
However, advances in seismology have allowed us to learn a great deal about the Earth and the many layers that make it up. Each layer has its own properties, composition, and characteristics that affects many of the key processes of our planet. They are, in order from the exterior to the interior – the crust, the mantle, the outer core, and the inner core. Let's take a look at them and see what they have going on.
Like all terrestrial planets, the Earth's interior is differentiated. This means that its internal structure consists of layers, arranged like the skin of an onion. Peel back one, and you find another, distinguished from the last by its chemical and geological properties, as well as vast differences in temperature and pressure.
Explanation:
How many half lives will it take for 300 grams of Carbon-14 to decay to 18.75 grams?
Answers
Answer:
16
Explanation:
300/18.75
what happens to the strength of an electromagnet when the number of coils in the solenoid is decreased?
Answers
Answer: a . it decreases
Explanation:
Graphs and charts of data can be used for
Answers
What is thermodynamics? explain detail
Answers
Thermodynamics is a macroscopic science. Thermodynamics is the study of the relations between heat, work, temperature, and energy.
Thermodynamics is a branch that deals with heat, work and temperature, and their relation to energy, radiation and physical properties of matter. Thermodynamics is a macroscopic science which means dealing with substances in bulk or with large amount.
Thermodynamics is classified into the following four branches:
1- Classical Thermodynamics
2- Statistical Thermodynamics
3- Chemical Thermodynamics
4- Equilibrium Thermodynamics
Learn more about macroscopic here:-
brainly.com/question/13091817
#SPJ4
What happened to the Western Africa empires?
Answers
Answer:
they died lol XD Gang op.....
A steel column is 3 m long and 0.4 m diameter. It carries a load of 50 MN. Given that the
modulus of elasticity is 200 GPa. Calculate the compressive stress.
Answers
The compressive stress in the steel column is found to be approximately 397.6 MPa.
The formula for calculating the area of a circle can be used to determine the steel column's cross-sectional area (A),
A = π*(d/2)², diameter of the column is d,
A = π*(0.4/2)²
A = 0.1257m²
The compressive stress (σ) in the column can be calculated using the formula, σ = F/A, F is the load carried by the column is F.
σ = 50 MN/0.1257m²
σ = 397.6 MPa
Therefore, the compressive stress in the steel column is approximately 397.6 MPa.
To know more about compressive stress, visit,
https://brainly.com/question/28813620
#SPJ1
7. A particle of mass 3 kg is held in equilibrium by two light unextensible strings. One string is horizontal, as shown in Figure 7.30. The tension in the horizontal string is PN and the tension in the other string is N. Find a) the value of 0 b) the value of P.
Answers
The tension in the strings are 31.47 and 19.25 N respectively.
Mass of the block, m = 3 kg
From the figure, consider the vertical components,
T₁ sin45° + T₂ sin30° = mg
(T₁/√2) + (T₂/2) = 3 x 9.8 = 29.4
Also, consider the horizontal components,
T₁ cos45° = T₂ cos30°
T₁/√2 = T₂ x√3/2
T₁ = T₂ x √3/2 x √2
So,
T₁ = 0.612T₂
Applying in the first equation,
(T₁/√2) + (T₂/2) = 29.4
(0.612T₂/1.414) + 0.5T₂ = 29.4
0.434 T₂ + 0.5 T₂ = 29.4
0.934 T₂ = 29.4
Therefore, the tension,
T₂ = 29.4/0.934
T₂ = 31.47 N
So, the tension,
T₁ = 0.612 T₂
T₁ = 0.612 x 31.47
T₁ = 19.25 N
To learn more about tension, click:
https://brainly.com/question/30037765
#SPJ1
1. A turtle and a rabbit are to have a race. The turtle’s average speed is 0.9 m/s. The rabbit’s average speed is 9 m/s. The distance from the starting line to the finish line is 1500 m. The rabbit decides to let the turtle run before he starts running to give the turtle a head start. If the rabbit started to run 30 minutes after the turtle started, can he win the race? Explain.
Answers
Answer:no
Explanation:because 0.9*(30*60)=0.9*1800=1620
The turtle has already won the race
Yes rabbit will win the race will distance in 3.2 hours and turtle will cover in 27 hours
What will be the speed of the rabbit and the turtle?It is given
\(V_{t} = 0.9 \frac{m}{s}\)
\(V_{r} = 9 \frac{m}{s}\)
\(D=1500 m\)
Time taken by turtle
\(T= \dfrac{D}{V_{t} }=\dfrac{1500}{0.9_{} }\)
\(T=1666 minutes= 27 hours\)
Time taken by rabbit
\(T= \dfrac{D}{V_{r} }=\dfrac{1500}{9_{} }\)
\(T=166 minutes\)
since rabbit started 30 minutes after turtle then
\(T= 136+30=196 minutes\)
\(T= 3.2 hours\)
Hence Yes rabbit will win the race will distance in 3.2 hours and turtle will cover in 27 hours
To know more about average velocity follow
https://brainly.com/question/6504879
Sound travels through air at a speed of 342m/s
342
m
/
s
at room temperature. What is the frequency of a sound wave with a wavelength of 1.8m
1.8
m
Answers
Answer:
Explanation:
The formula relating the speed of sound, frequency, and wavelength is:
speed = frequency x wavelength
Rearranging this formula to solve for frequency:
frequency = speed / wavelength
Substituting the given values:
frequency = 342 m/s / 1.8 m
frequency = 190 Hz
Therefore, the frequency of the sound wave is 190 Hz.
Lana's class is studying the various kinds of energy found on a playground
Which of the following would be the BEST way to test for an equal transformation of energy on a playground?
СА
Using the slide, Lana could measure her kinetic energy when she was climbing up the ladder, measure her potential energy before she slid down, and her total energy used at the bottom of the slide. If the amount of potential
energy and kinetic energy added up to equal the total amount of energy used, it would show an equal transformation of energy
OB
Using the slido, Lana could measure her potential and kinetic energy sitting at the top of the slide, and then she could measure her kinetic and potential energy at various points while sliding to the bottom of the total value of
her potential energy and her kinetic energy were equal at every measuremont, it would show that there had been an equal transformation
C
Using the swing, Lana could measure her potential energy when she was sitting still on the swing, and she could measure her kinetic energy when the swing was in motion. If the kinetic energy was twice the amount of her
potential energy, it would show there had boon an equal transformation of potential energy to kinetic energy
D
Using the soesaw, Lana could measure her potential energy when she was in motion, and she could measure her kinetic energy when she was resting. If her kinetic and potential energy were equal, it would show that there
had been an equal transformation
Answers
If the amount of potential energy and kinetic energy added up to equal the total amount of energy used, it would show an equal transformation of energy.
What is Energy?This can be defined as the ability or capacity to do work. The potential and kinetic energy equals the total amount of energy involved when Lana was on the playground.
This depicts an equal transformation of energy which is why the most appropriate choice in this scenario is option A.
Read more about Energy here https://brainly.com/question/582060
1. Small hole is made up of a window
shutter of a room, 12.5m and image
of the car outside the room cast on
the opposite if the image is 6.5m
high and the tree is 32.5cm from
the window. What is the high of
the tree?
Answers
Answer:
I don't know sorry I hope you find what your looking
Thermal effects refers to the:
Answers
Answer:
removal of heat by cooling towers
5. Salt is often spread on roads during winter to prevent ice from forming. Do you think sugar would
work as well? Explain your answer.
Answers
Answer:
No because sugar is more sweet and it would not have the benefits of salt. Think of it like how people used to put salt on meat to preserve it. Would they put sugar on? No they would not because salt is a combination of things that sugar does not have.
Explanation
Which bibliographic description for a book is correct, based on the Harvard Method in your study guide?
Answers
An annotated bibliography is a list of citations to books, articles, and documents. Each citation is followed by a brief descriptive and evaluative paragraph, the annotation. The purpose of the annotation is to inform the reader of the relevance, accuracy, and quality of the sources cited.
The cue column is typically located on the left-hand side of the page and is used to jot down keywords or questions that serve as cues for recalling the main points of the lecture or reading. The note-taking area is located on the right-hand side of the page and is used to write down detailed notes about the lecture or reading.
The summary section is located at the bottom of the page and is used to summarize the key points of the notes. Overall, the Cornell method is an effective way to organize and retain information during lectures and readings.
Learn more about bibliography on:
https://brainly.com/question/1041590
#SPJ1
____ is factual information not subject to bias.
Interpretation
Analysis
Data
Opinion
Answers
Answer:
Data
Explanation:
Data is factual information not subject to bias.
This ultimately implies that, data connotes fact, thus, it is an information that is credible, accurate, a statement of truth, evidential and proven.
In Computer programming, a data dictionary can be defined as a centralized collection of information on a specific data such as attributes, names, fields and definitions that are being used in a computer database system.
In a data dictionary, data elements are combined into records, which are meaningful combinations of data elements that are included in data flows or retained in data stores.
This ultimately implies that, a data dictionary found in a computer database system typically contains the records about all the data elements (objects) such as data relationships with other elements, ownership, type, size, primary keys etc. This records are stored and communicated to other data when required or needed.
Explain why six accumulators each of elctromotive foce two volts connect in series can be used to start the engine of a car where as eight dry cell each of electromotive force 1.5v connected in series cannot be used
Answers
Electromotive force is the electrical activity produced by a non-electrical source and is measured in volts.. Electrical transducers, which include batteries and generators, transform other forms of energy into electrical energy to produce an emf.
Due to the high internal resistance of the 8-dry cells compared to the low internal resistance of the accumulators, the current generated by the dry cells is too low compared to the current generated by the accumulators. The accumulators will generate the bigger currents required to start the engine because the dry cells' internal resistance is far higher than that of the accumulators. NB. Generally speaking, accumulators have low internal resistance. mostly because the acid therein is a superb conductor.
The effort done by the battery to transform the chemical energy of the cell into electrical energy is what creates the voltage that the electromotive force (e.m.f.) of a battery correlates to (the current in the circuit).
To know more about electromotive force, click on the link below:
https://brainly.com/question/10497991
#SPJ9