Immediately above the Sun's photosphere is the _______, which is the Sun's lower atmosphere. A. core B. chromosphere C. corona D. solar wind

The time taken by the ball to reach the surface of the moon that drops from a height of 1.5 m from the moon is 1.36s.

Given that the acceleration of gravity on the surface of the moon is, \(a=g=1.62 ms^{-2}\). The distance of the ball from the surface is the height of the ball from the surface. So, \(h=d=1.5 m\).

Since the ball is dropped under gravity or free-fall motion from rest, then the initial velocity is zero (i.e.) \(v=0ms^{-1}\). Let t be the time taken by the ball to reach the surface of the moon.

By the equation of motion, the equation is given by \(h=v_{0} t+\frac{1}{2}gt^{2}\), where g is the gravity, t is the time taken by an object, h is the distance of the object, and \(v_{0}\) is the initial velocity of an object from the rest.

Substitute the values of h, g, and \(v_{0}\) in the above equation, and we get

\(1.5=(0)t+\frac{1}{2}(1.62)t^{2}\)

\(1.5=0.81t^{2}\)

\(t^{2} =\frac{1.5}{0.81}\)

\(t^2=1.852\)

\(t=\pm1.36s\)

The time taken cannot be negative.

Therefore, The time taken by the ball to reach the surface of the moon is 1.36s.

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Explanation:

mass of car + mass of the wrestler = (100+160) kg

= 260kg.

force = mass × acceleration

= 260×3 = 780 N.

hope this helps you.

Answer: Inertia

Explanation: If it is multiple choice chose acceleration and inertia

Answer:

Technology is any man made tool or thing that helps improve our lives, Toothbrushes help us keep out mouths clean and a car helps us transport ourselves  to where we need to go.

Science refers to understanding and studying  the natural world, engineering and technology are applications of science to products and processes.

The principle involved is the conservation of momentum, where the boat moves in the opposite direction to maintain total momentum zero.

The physics principle involved in the movement of the boat as the man jumps onto the jetty is the principle of conservation of momentum. According to this principle, the total momentum of an isolated system remains constant if no external forces act on it.

In this scenario, the boat and the man can be considered as an isolated system since there are no external forces acting on them. Initially, when the man is standing on the boat, the system is at rest, and the total momentum is zero.

When the man jumps off the boat and onto the jetty, he exerts a force on the boat in one direction. According to Newton's third law of motion, for every action, there is an equal and opposite reaction. As the man pushes off the boat, the boat experiences an equal and opposite force that propels it in the opposite direction.

Due to the conservation of momentum, the momentum gained by the boat in one direction is equal to the momentum lost by the man in the opposite direction. As a result, the boat moves away from the jetty, exhibiting a backward motion.

This principle can be mathematically expressed as:

Initial momentum of the system = Final momentum of the system

Since the initial momentum is zero, the final momentum of the system (including the man and the boat) must also be zero. The momentum gained by the boat ensures that the total momentum of the system remains conserved.

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answer

64 is C (c) 1-Bromo-3-methylbutane

63 is D

i is secondary ii is primary

Some of the forces that act upon objects include gravity, friction, tension, etc.

There are several different forces that can act upon objects. Some of them are described below:

Gravity: Gravity is the force of attraction between two objects with mass. It is what keeps us on the ground and causes objects to fall towards the center of the Earth.

Friction: Friction is the force that resists the motion of two surfaces that are in contact with each other. For example, friction is what makes it difficult to slide a heavy box across a carpeted floor.

Tension: Tension is the force that is transmitted through a string, cable, or other similar objects when it is pulled taut. For example, tension is what keeps a tightrope walker from falling.

Other forces worthy of mentioning include Compression, Electromagnetic force, Normal force, and Air resistance.

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Answer:Lenz's Law of Electromagnetic Induction. ... This voltage is called an induced emf as it has been induced into the conductor by a changing magnetic field due to electromagnetic induction with the negative sign in Faraday's law telling us the direction of the induced current (or polarity of the induced emf).

Explanation:

The correct option is B i.e p subshell.

In atomic physics and quantum mechanics, electrons are arranged in energy levels and subshells within those levels. Subshells are designated by letters, with the first four being s, p, d, and f.

The subshell in question, the p subshell, has three orbitals. Orbitals are regions in space where electrons are likely to be found. In the p subshell, there are three distinct orbitals labeled as px, py, and pz. These orbitals are oriented along the x, y, and z axes, respectively.

Each of the three p orbitals can hold a maximum of two electrons. This is due to the Pauli exclusion principle, which states that no two electrons in an atom can have the same set of quantum numbers. Therefore, the p subshell can accommodate a total of six electrons (2 electrons per orbital × 3 orbitals).

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The aforementioned circumstances can result in the production of 0.119 moles of ammonia (NH3).

We must utilize the ideal gas law and the stoichiometry of the balanced chemical equation for the reaction between hydrogen (H2) and nitrogen (N2) to make ammonia in order to determine how many moles of ammonia (NH3) were produced.

Let's begin by formulating the reaction's balanced equation:

3H₂ + N₂ → 2NH₃

We can see from the equation that we produce 2 moles of ammonia for every 3 moles of hydrogen. As a result, the molar ratio of ammonia to hydrogen is 2:3.

We must convert the supplied parameters of 4.0 liters of hydrogen at 50.0 °C and 1.2 atm of pressure into moles in order to use the ideal gas law. The ideal gas law and the molar volume of an ideal gas at standard temperature and pressure (STP) may be combined using the equation shown below:

PV = nRT

Where:

The temperature must first be converted from Celsius to Kelvin:

T(K) = T(°C) + 273.15

T(K) = 50.0°C + 273.15 = 323.15 K

To solve for the number of moles (n), we may now rearrange the ideal gas law equation as follows:

n = PV / RT

n = (1.2 atm) * (4.0 L) / (0.0821 L·atm/(mol·K) * 323.15 K) ≈ 0.179 mol

Since ammonia and hydrogen have a 2:3 molar ratio, we can calculate the amount of ammonia created by multiplying (2/3) * 0.179 mol by 0.119 mol.

As a result, the circumstances allow for the production of 0.119 moles of ammonia.

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Answer: energy=mc^2 is the answer

Answer:

E represents units of energy

Explanation:

The magnetic field at a distance r from the center of a long wire with radius a and uniform current per unit area j in the positive z direction can be found using Ampere's law and is equal to B = { μ0jr/2 (for r<a)

μ0ja²/2r (for r>a) }

For a point inside the wire (r<a), we can choose an imaginary Amperian loop in the shape of a circle with radius r centered on the wire.

The current passing through this loop is equal to the current density times the area of the loop, so I = jπr^2. By Ampere's law, the line integral of the magnetic field around this loop is equal to μ0 times the enclosed current, where μ0 is the permeability of free space.

Since the current is uniform, the magnetic field is also uniform and directed in the azimuthal direction. Therefore, the line integral reduces to B times the circumference of the loop, or 2πrB. Thus, we have:

2πrB = μ0 jπr²

B = μ0jr/2

For a point outside the wire (r>a), we can again choose an imaginary Amperian loop in the shape of a circle with radius r centered on the wire. However, in this case, the current passing through the loop is equal to the total current flowing in the wire, which is equal to the current density times the cross-sectional area of the wire, or I = jπa^2. Thus, we have:

2πrB = μ0 jπa²

B = μ0ja²/2r

Therefore, the magnetic field at a distance r from the center of a long wire with radius a and uniform current per unit area j in the positive z direction is given by:

B = { μ0jr/2 (for r<a)

μ0ja²/2r (for r>a) }

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Length of the solenoid, l = 50.0 cm = 0.50 mA = 0.385 m²µ₀ = 4π x 10⁻⁷ H/m. L = (µ₀N²A)/lL = [4π x 10⁻⁷ H/m × (100)² × 0.385 m²]/0.50 mL = 7.87 x 10⁻⁴ H.  The induced emf in the solenoid when t=20.0 s is -4.13 V

a) Find the self-inductance of the solenoid.

A solenoid is a type of electromagnet, the wire coiled up such that it produces a magnetic field when electric current passes through it.

The self-inductance of the solenoid can be given by the formula:  

 L= (µ₀N²A)/

lwhere  µ₀ is the permeability of free space

N is the number of turns of the solenoid

l is the length of the solenoid

A is the cross-sectional area of the solenoid

Given that, Number of turns, N = 100

Length of the solenoid, l = 50.0 cm = 0.50 mA = 0.385 m²µ₀ = 4π x 10⁻⁷ H/m. L = (µ₀N²A)/lL = [4π x 10⁻⁷ H/m × (100)² × 0.385 m²]/0.50 mL = 7.87 x 10⁻⁴ H.

b) Find the induced emf in the solenoid when t = 20.0 s.

The induced emf (ε) can be calculated by the formula;

ε = -L dI/dt

where L is the self-inductance of the solenoid and dI/dt is the time rate of change of the current given by;    

I(t)=(5.00A)e^t/2.00s

Differentiating I(t) with respect to t gives;   dI/dt = 5e^t/2  V/s (Volts per second)Given that L = 7.87 x 10⁻⁴ HWhen t = 20.0s;  ε = - L dI/dt  = -7.87 × 10⁻⁴ H × (5e^20/2)  = -4.13 V

Therefore, the induced emf in the solenoid when t=20.0 s is -4.13 V.

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For weightless object, gravity is equal to centripetal acceleration. The radius of the loop is calculated as 8 km.

The property of the motion of an object traversing a circular path is known as centripetal acceleration. Any object that is moving in circle and has an acceleration vector pointed towards center of that circle is Centripetal acceleration.

As Centripetal Acceleration formula is;

a = v²/r

Given, V-  velocity =  280 m/s

And we know that for weightless object,

Gravity =  centripetal acceleration

So, a =  g

given, g =9.8 m/s²

So,9.8 = 280²/r

r= 8000 m

Radius of the loop = 8 km

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the formula for (momentum) P = (force) F * (Mass) M

P = FM

if mass = 0 momentum = 0

Hope this helps...

Answer:

In terms of an equation, the momentum of an object is equal to the mass of the object times the velocity of the object. ... The equation illustrates that momentum is directly proportional to an object's mass and directly proportional to the object's velocity. The units for momentum would be mass units times velocity uni

Explanation:

Answer:

the answer is b: theory

Explanation:

in science theory can be defined as a scientific idea that uses logic based on wisdom, research, observation, and experience

Each of the 11 body systems depends on others to function. So, the correct option is Option B.

The human body is actually an amazing combination of many different systems that work together to keep everything functioning correctly. For example, some systems handle food and energy, while others focus on taking in oxygen and moving it around the body. By learning about the different systems working inside the body, we can understand how everything works together to keep you healthy, growing, and strong. The various systems of our body are interconnected and are dependent upon each other. The circulatory system includes the heart the heart does not beat unless the nervous system including the brain tells the heart to beat. The skeletal system is also connected to our digestive system for an increase in the size and strength of the muscles, bones, and cartilage.  It takes all the body systems for the proper growth and development of the human body.

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Answer:

False

Explanation:

Because as soon as you hit the person, all of your "charge" you've created gets destroyed by forcing you to hit another object, and therefore cannot be charged.

a) The return on the bond when the government defaults can be calculated by considering the bond price at default (Pd) and the bond price at issuance (P). The return is given by the formula:

Return = (Pd - P) / P

b) (i) To find the range of Dt such that the bond price for this debt is the same as that for the risk-free T-Bills, we equate the bond price (P) with the risk-free rate (Rf). Since the equations for bond price are not provided, the specific range of Dt cannot be determined without additional information.

(ii) To find the range of D+ such that the bond price is zero, we set the bond price equal to zero (P = 0) and solve for D+. Without the bond price equation, it is not possible to determine the range of values.

(iii) To determine the range of D such that no investors would buy this bond in the government bond auction market, we need to consider the bond price relative to the risk-free rate. If the bond price is lower than the risk-free rate, rational investors would not be interested in buying the bond. However, without the bond price equation, it is not possible to determine the specific range of D.

c) Given it = 0, n = 0.4, Dt = 0.4, and assuming risk-neutral investors, we can calculate the probability of default (pa) on this debt and the sovereign spread.

To calculate pa, we need to integrate the probability density function (PDF) f(yt+1) over the range where default occurs (0.5 to 1.5) and divide by the total range of Yt+1 (0 to 2). Given that Yt+1 is uniformly distributed, we have:

pa = ∫[0.5,1.5] f(yt+1) dyt+1 / ∫[0,2] f(yt+1) dyt+1

Substituting the PDF f(yt+1) = 1 for 0.5 ≤ Yt+1 ≤ 1.5 and 0 otherwise, we can simplify the equation:

pa = ∫[0.5,1.5] 1 dyt+1 / ∫[0,2] 1 dyt+1

= [0.5,1.5] / [0,2]

= (1 - 0.5) / 2

= 0.25

Therefore, the probability of default (pa) on this debt is 0.25.

The sovereign spread is the difference between the interest rate on the government bond (i) and the risk-free rate on T-Bills (Rf). However, the interest rate on the government bond (i) is not provided, so the sovereign spread cannot be calculated without that information.

In summary, the return on the bond when the government defaults can be calculated based on the bond price at default and issuance. Without the bond price equation, we cannot determine the specific ranges of Dt and D+ that correspond to specific bond prices. Additionally, without the interest rate on the government bond, the sovereign spread cannot be calculated. However, given the provided parameters, we can calculate the probability of default (pa) on the debt as 0.25.

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Explanation:

Cells are the basic building blocks of all living things. The human body is composed of trillions of cells. They provide structure for the body, take in nutrients from food, convert those nutrients into energy, and carry out specialized functions.

Blue light has a greater frequency and carries more energy than red light when compared.

Electromagnetic frequencies that can be seen by human eyes make up visible light. This spectrum excludes ultraviolet and infrared radiation. The wavelengths and frequencies that an object reflects determine the colours we see. Both waves and particles of light exist. It has wave characteristics like amplitude, period, wavelength, and frequency.

The number of times a wave completes a cycle each second is known as its frequency. Hertz, or cycles per second, is the unit of measurement (Hz).

There is more energy in the light the higher the frequency. As a result, its wavelength shrinks.

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Answer:

four oxygen

Explanation:

Answer:

This

Explanation:

Khan academy answer

The speed of the particle is approximately 0.874 times.

The momentum of a particle can be expressed as \(\rm \( p = \gamma m v \)\), where p is momentum, m is mass, v is speed, and \(\rm \( \gamma \)\) is the Lorentz factor given by \(\rm \( \gamma = \frac{1}{\sqrt{1 - \frac{v^2}{c^2}}} \)\), where c is the speed of light.

Given that the momentum p = 1.80mc, we can set up the equation as \(\rm \( \gamma m v = 1.80mc \)\).

Solving for \(\rm \( \gamma \), we get \( \gamma = \frac{1.80mc}{mv} \)\).

Now, substitute the expression for \(\( \gamma \)\) into the Lorentz factor equation and solve for v:

\(\rm \[ \frac{1}{\sqrt{1 - \frac{v^2}{c^2}}} = \frac{1.80mc}{mv} \]\)

Squaring both sides and rearranging, we get:

\(\rm \[ \frac{v^2}{c^2 - v^2} = 3.24 \]\)

Solving for \(\rm \( v^2 \)\), we find:

\(\rm \[ v^2 = \frac{3.24c^2}{1 + 3.24} \]\rm \\\\\ v^2 = \frac{3.24c^2}{4.24} \]\rm \\\\\ v^2 = 0.7660c^2 \]\)

Taking the square root of both sides, we find:

v = 0.874c

The speed of the particle is approximately 0.874 times the speed of light c.

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Answer:

Explanation:

Given that  

speed u=4×10⁶ m/s

electric field E=4×10² N/c

distance b/w the plates d=2 cm

basing on the concept of the electrostatices

now we find the acceleration b/w the plates

acceleration a=qE/m=1.6×10⁻¹⁹×4×10²/9.1×10⁻³¹=0.7×10¹⁴=7×10¹³ m/s

now we find the horizantal distance travelled by electrons hit the plates

horizantal distance X=u[2y/a]^1/2

=4×10⁶[2×2×10⁻²/7×10¹³]^1/2

=9.5cm

now we find the velocity f the electron strike the plate

v²-(4×10⁶)²=2×7×10¹³×2×10⁻²

v²=16×10¹²+28×10¹¹

v²=1.88×10¹³m/s

speed after hits =>V=4.34×10⁶ m/s

Answer:

Explanation: you can choose B or C but i would choose C

Answer: Fn

Explanation: Because Fn is applying force upward