which of the sources is commonly used as a continuum source in ultraviolet (uv) spectroscopy?

Here are the answers to the questions:1. Three main orbital changes that the earth undergoes and their time periods are:A. Precession- every 26,000 years B. Obliquity- every 41,000 years C. Eccentricity- every 100,000 yearsThese changes in the earth's orbit, together, have an impact on the amount of solar radiation that reaches the Earth's surface, which then affects climate change. Three cyclical orbital changes and their times associated with Milankovitch are:A. Eccentricity - every 100,000 yearsB. Obliquity - every 41,000 yearsC. Precession - every 26,000 years2. All EMR in order of wavelength are:- Gamma rays- X-rays- Ultraviolet radiation- Visible light- Infrared radiation- Microwave- Radio wavesForms of EMR from the sun that are reaching right now are UV radiation, visible light, and infrared radiation.

The number of forms of EMR reaching the moon right now is two, UV radiation, and visible light.The ozone layer is present in the stratosphere and is formed through a series of complex chemical reactions. The primary function of the ozone layer is to protect the earth from the harmful effects of UV radiation by absorbing it. The balance of EMR plays a critical role in the greenhouse effect. As the amount of greenhouse gases increases, the amount of energy that is absorbed by the Earth's surface also increases. Carbon dioxide and other greenhouse gases can absorb and emit infrared radiation, which plays a crucial role in climate change.3. The four forms of heat transfer to and on planet earth are:- Conduction- Convection- Radiation- AdvectionThese four forms of heat transfer are responsible for weather on planet Earth.

For example, when the sun heats the ground, it results in conduction, which then results in convection as the air heats up and rises. This can lead to cloud formation and precipitation.4. The time it takes for EMR from the University of Delaware to reach:A. Moon - About 1.28 secondsB. Jupiter - About 33.75 minutesC. Closest star (not the sun) - About 4.37 yearsD. Your mother - This question is not clear, please provide more context.

To know more about Eccentricity visit:-

https://brainly.com/question/31912136

#SPJ11

\(\\ \rm\Rrightarrow \dfrac{1}{u}+\dfrac{1}{v}=\dfrac{1}{f}\)

\(\\ \rm\Rrightarrow \dfrac{1}{u}=\dfrac{1}{-10}+\dfrac{1}{38}\)

\(\\ \rm\Rrightarrow \dfrac{1}{u}=\dfrac{-19+5}{190}\)

\(\\ \rm\Rrightarrow \dfrac{1}{u}=\dfrac{-14}{190}\)

\(\\ \rm\Rrightarrow u=\dfrac{190}{-14}\)

\(\\ \rm\Rrightarrow u=13.6cm\)

Real

Answer: d) the elements in two compounds switch places

Explanation: just took it

The angle between e and E is 90 degrees, the cosine of the angle is zero, which means that the scalar product is also zero. In other words, e•E = 0 when e is a unit vector directed along an equipotential line.

If e is a unit vector directed along an equipotential line, then it is perpendicular to the electric field E at every point along that line. This is because equipotential lines represent a constant electric potential, which means that there is no change in potential along that line. Since the electric field is the negative gradient of the potential, it is always perpendicular to the equipotential lines. Therefore, the scalar product e•E between the unit vector e and the electric field E is zero. The scalar product is defined as the product of the magnitudes of the two vectors and the cosine of the angle between them. Since the angle between e and E is 90 degrees, the cosine of the angle is zero, which means that the scalar product is also zero. In other words, e•E = 0 when e is a unit vector directed along an equipotential line.

For more question on equipotential

https://brainly.com/question/14768728

#SPJ11

\(\\ \rm\longmapsto Force=Mass(Acceleration)\)

\(\\ \rm\longmapsto Force=25(10)\)

\(\\ \rm\longmapsto Force=250N\)

Hi there!

Recall the equation for electric potential energy for point charges:
\(\boxed{U = \frac{1}{4\pi \epsilon_0} \frac{q_1q_2}{r}}\)

U = Electric potential energy (J)

ε₀ = Permittivity of Free Space (8.85 × 10⁻¹² C/Vm)

q₁, q₂: Charges (C)
r = distance between charges (m)

Solving for r:
3 - (-3) = 6m

Now, plug in the values:

\(U = \frac{1}{4\pi \epsilon_0} \frac{(.00001)(.00001)}{6} = \boxed{1.498 J}\)

The period of a pendulum is affected by its length, mass, and the acceleration due to gravity (g). From this problem, we have measured the periods of several pendulums of different lengths.

We have to analyze the data by fitting to a power law, y = a L b. Let us begin by recalling the equation for the period of a pendulum:

\(T = 2π (L/g)^1/2\) Here, T is the period of the pendulum L is the length of the pendulum g is the acceleration due to gravity (which is to be determined).

Substituting the power law, y = a L b in the equation above, we get:

\(2π (L/(a/y^b))1/2 = T2π (y^b/a)^1/2 L^1/2 = Tg = 4π² L/aT²y^b\) Hence, the value of the acceleration due to gravity (g) can be inferred from the equation above as:

\(g = 4π² L/aT²y^b\)

To know more about pendulum visit:

https://brainly.com/question/29268528

#SPJ11

I would choose the option B.

F = ma

a = 75 / 25 = 3 m/s^2

The acceleration of the given object will be equal to 3 m/s². Therefore, option (B) is correct.

Acceleration of an object can be explained as the change in the velocity of an object with respect to time. The acceleration is a vector quantity as it exhibits magnitude and direction. Acceleration can be calculated from the 2nd derivative of the position of the object w.r.t. time.

The force is the product of the mass and acceleration, according to Newton's second law of motion.

F = ma

And,   a = F/m

From the above formula, we ca say that the acceleration is inversely proportional to mass.

Given, the force acting on the object, F = 75 N

The mass of the object, m = 25.0 Kg

The acceleration of the given object, a = 75/25 =3 m/s²

Therefore, the acceleration of the object is equal to 3 m/s².

Learn more about acceleration, here:

brainly.com/question/3046924

#SPJ2

The inductance of the flat wire loop is given by: L = μ₀N²πr²/2

To calculate the inductance of a flat wire loop of radius r, we can use the formula for the inductance of a circular loop, which is given by L = μ₀N²A/2R, where μ₀ is the permeability of free space, N is the number of turns, A is the area enclosed by the loop, and R is the mean radius of the loop.

In this case, we are assuming that the contribution to the inductance from the magnetic field inside the wire is negligible. This means that we can treat the wire as if it were hollow and only consider the magnetic field outside the wire.

Given that the wire has a radius r = 0.010r, we can determine the mean radius of the loop by subtracting the inner radius of the wire from the outer radius of the loop. The mean radius is therefore r - 0.010r = 0.990r.

Since the wire is flat, the area enclosed by the loop is simply the area of a circle with radius 0.990r, which is A = π(0.990r)².

Now we can plug the given values into the formula for inductance and calculate the result.

L = μ₀N²A/2R
 = μ₀N²π(0.990r)²/2(0.990r)

Simplifying the equation, we find that the inductance of the flat wire loop is given by:

L = μ₀N²πr²/2

In conclusion, the expression μ₀N²πr²/2 represents the inductance of the flat wire loop with a radius r, considering the wire's radius as 0.010r and neglecting the contribution to inductance from the magnetic field inside the wire.

Learn more about inductance at: https://brainly.com/question/29462791

#SPJ11

Friction is the force that acts on the opposite side of direction of force, thus it manages to decelerate an object, so it acts upward along the plane

Answer: find the answer in the explanation as kinetic energy converts to potential energy.

Explanation:

Before the truck driver sees a dog running into the road, The mechanical energy state of the truck will be kinetic energy at maximum.

Immediately he applied the brakes, the mechanical energy of the truck will be combination of kinetic energy and potential energy.

The kinetic energy will gradually decrease as potential energy continue to increase till it reaches maximum potential energy.

The truck will come to a stop at maximum potential energy

The name given to bonds that involve the sharing of electrons is called a covalent bond. In a covalent bond, two atoms share a pair of electrons in order to achieve a more stable electron configuration. This sharing of electrons allows the atoms to fill their outermost electron shells and attain a stable state.

Covalent bonds are commonly found in molecules composed of nonmetals, such as water (H2O) and methane (CH4). In these molecules, the shared electrons are attracted to the positively charged nuclei of both atoms, creating a strong bond. The strength of the bond is determined by the electronegativity of the atoms involved and the distance between their nuclei.

Covalent bonds can also be polar or nonpolar, depending on the difference in electronegativity between the two atoms. In a polar covalent bond, the electrons are shared unequally, resulting in a slight charge difference between the atoms. In a nonpolar covalent bond, the electrons are shared equally, resulting in no charge difference between the atoms.

Overall, covalent bonds play an important role in the formation of molecules and the stability of chemical compounds.

to know more about sharing of electrons click this link

brainly.com/question/22238351

#SPJ11

Answer:

read this it might help some

When a moving object collides with a stationary object of identical mass, the stationary object encounters the greater collision force. When a moving object collides with a stationary object of identical mass, the stationary object encounters the greater momentum change.

Explanation:

In enzyme catalysis, binding energy is essential. Proteins known as enzymes serve as catalysts for chemical reactions by reducing the activation energy necessary for the reaction to take place.

Binding energy is the amount of power needed to separate two or more particles held together by an external force, such as the strong nuclear force or the electrostatic force. It is a crucial idea in physics and chemistry that aids in the explanation of a variety of events, including the structure of atomic nuclei and the creation of chemical bonds between atoms. Binding energy is essential in biological systems as well because it is essential for DNA replication, protein folding, and enzyme catalysis. The specificity and effectiveness of these biological processes are determined by the strength of the binding energy between a ligand and its target molecule, and even tiny changes in the binding energy can have a big impact on the system's overall performance.

Learn more about binding energy here:

https://brainly.com/question/30073915

#SPJ4

Answer:

The energy that can be stored in the capacitor is 239 nJ

Explanation:

We first calculate the capacitance of each material. Let C₁ be the capacitance of pyrex glass and C₂ be the capacitance of polystyrene.

C₁ = κ₁ε₀A/d where κ₁ = dielectric constant of pyrex glass = 5, A = area of plates = L² where L = length of square plate = 7.40 cm = 7.40 × 10⁻² m and d = thickness of pyrex slab = 1.60 mm = 1.60 × 10⁻³ m and ε₀ = permittivity of free space = 8.854 × 10⁻¹² F/m

C₁ = κ₁ε₀A/d = κ₁ε₀L²/d = 5 × 8.854 × 10⁻¹² F/m × (7.40 × 10⁻² m)²/1.60 × 10⁻³ m = 2424.2252/1.60 × 10⁻¹¹ F = 1515.14 × 10⁻¹¹ F = 15.2 × 10⁻⁹ F = 15.2 nF

C₂ = κ₂ε₀A/d where κ₂ = dielectric constant of polystyrene = 3, A = area of plates = L² where L = length of square plate = 7.40 cm = 7.40 × 10⁻² m and d = thickness of polystyrene slab = 1.60 mm = 1.60 × 10⁻³ m and ε₀ = permittivity of free space = 8.854 × 10⁻¹² F/m

C₁ = κ₁ε₀A/d = κ₁ε₀L²/d = 3 × 8.854 × 10⁻¹² F/m × (7.40 × 10⁻² m)²/1.60 × 10⁻³ m = 1454.5351/1.60 × 10⁻¹¹ F = 909.08 × 10⁻¹¹ F = 9.09 × 10⁻⁹ F = 9.09 nF

Since the capacitors are in series, we find their effective capacitance C from

1/C = 1/C₁ + 1/C₂

C = C₁C₂/(C₁ + C₂)

= 15.2 × 10⁻⁹ F × 9.09 × 10⁻⁹ F/(15.2 × 10⁻⁹ F + 9.09 × 10⁻⁹ F)

= 138.168 × 10⁻¹⁸/24.29 × 10⁻⁹ F

= 5.69 × 10⁻⁹ F

The amount of electrical energy stored in a capacitor is given by W = 1/2CV² where C = capacitance and v = voltage applied. Now C = 5.69 × 10⁻⁹ F and V = 84.0 V for this capacitor

So W = 1/2 × 5.69 × 10⁻⁹ F × 84.0 V

= 238.98 × 10⁻⁹ J

≅ 239 × 10⁻⁹ J

= 239 nJ

So the energy that can be stored in the capacitor is 239 nJ

Answer: a) Moment = 200N.m

              b) F = 500N

Explanation: Moment or Torque is the tendency of a body to rotate because of an aplplied force. It can be calculated as

\(\tau = F.r.sin\theta\)

F is force applied

r is distance from the force to the point of rotation

θ is the angle formed between force and distance

a) Since F and r are perpendicular, θ=90°, sin90° = 1, so

\(\tau=F.r\)

\(\tau=100(2)\)

\(\tau=\) 200

Torque caused by weight of the barrier at the pivot is 200N.m

b) Counterweight has the same torque as pivot: \(\tau=\) 200

So, to find Force necessary to balance the weight:

\(\tau=F.r\)

\(F=\frac{\tau}{r}\)

\(F=\frac{200}{0.4}\)

F = 500

It is necessary a force of 500N from the counterweight to balance the weight.

Answer:

450N

Explanation:

Given parameters:

Mass of object  = 450kg

Initial velocity  = 15m/s

Final velocity  = 75m/s

Time  = 1min  = 60s

Unknown:

Force applied  = ?

Solution:

To solve this problem, from Newton's second law of motion, we know that;

  Force  = mass x acceleration

  Acceleration  = \(\frac{v - u }{t}\)

 v is the final velocity

 u is the initial velocity

 t is the time taken

Now;

    Force  = mass x  \(\frac{v - u }{t}\)

   Force  = 450 x \(\frac{75 - 15}{60}\)  = 450N

Answer:

How Are Grocery Store Aisles Organized? The aisles of a grocery store are organized into categories. ... Dairy aisles are along the back not connected to but close by the meat section. This will bring you back to the front of the other side of the store where the bread and bakery area is

Answer:

C. The net force acting on it.

Answer:

+1

Explanation:

There is only on atom of C

Answer:

The angle of the Sun's rays:

At about June 21 the sun is directly overhead at about 23 deg north of the equator

On about Dec 21 the sun is directly overhead at about 23 deg south of the equator

It is this tilt 23 deg to the ecliptic (path of earth about sun) that causes the major temperature changes on earth

When a star is so dense that its atoms have their electrons smashed in toward the nucleus (resulting in densities about a million times greater than water), the resulting material is called a Neutron star.

Stars are present in the galaxy that have the ability to generate their own light. They are both quite hot and very huge.

They are largely formed of hydrogen, with a trace of helium thrown in for good measure.

The sun is also a star, and its energy and light play an important part in the survival of all kinds of life on Earth.

When a star is so dense that its atoms have their electrons smashed in toward the nucleus (resulting in densities about a million times greater than water), the resulting material is called a Neutron star.

Hence the correct answer is a neutron star.

To learn more about the stars refer to the link;

https://brainly.com/question/24493066

#SPJ1

When the Earth and Sun are positioned as they are in July in the accompanying diagram, Australia, which is in the Southern Hemisphere, has short days.

Due to its inclination towards the sun, the northern hemisphere has longer days and more daylight. Away from the Sun is tilted the southern hemisphere.

The summer solstice is observed in Australia in December, when the Sun's passage across the sky reaches its peak. The day has the most daylight hours in the entire year. Although it can occur between December 21 and December 23, the summer solstice usually occurs on December 22.

To know more about Earth visit:-

https://brainly.com/question/14848334

#SPJ1

Answer:

R = -2500N

Explanation:

Use formula ΣF = Ma. We can split the Net Force into two parts: Fe - Ff  =  Ma.

Fe is the force developed by the engine: 4000N

Ff (R) is the air resistance projected on the vehicle. This is the value we're looking for.

Mass: 1000kg

Acceleration: 1.5m/s^2

Next, just plug in the values and solve.

▪4000N - Ff  =  (1000kg)(1.5m/s^2)

▪Ff = 1500N - 4000N

▪Ff = -2500N

R = -2500N.

The air resistance acting on the car is R = -2500N.

Answer:

Change in velocity, change in direction, change in both velocity and direction

Explanation:

Answer: I'm pretty sure that you just have to make sure that all of the elements have the same charge on both sides.

Explanation: Example: 2CO2+ 4CO2----- C6O10

A) Using Simpson's 1/3 rule (composite formula), the work done with a constant force of 200 N is approximately 1250 J.

B) Using the MATLAB function trapz, the work done is approximately 7750 J.

Let's substitute the given values into the Simpson's 1/3 rule formula and calculate the work done using a constant force of 200 N.

A) Force (F) = 200 N (constant for all t)

Velocity (v) = 4t (0 ≤ t ≤ 5) and v = 20 + (5 - t)² (5 ≤ t ≤ 15)

Step size (h) = 0.25

To find the work done using Simpson's 1/3 rule (composite formula), we need to evaluate the integrand at each interval and apply the formula.

Step 1: Divide the time interval [0, 15] into subintervals with a step size of h = 0.25, resulting in 61 equally spaced points: t0, t1, t2, ..., t60.

Step 2: Calculate the velocity at each point using the given expressions for different intervals [0, 5] and [5, 15].

For 0 ≤ t ≤ 5: v = 4t For 5 ≤ t ≤ 15: v = 20 + (5 - t)²

Step 3: Compute the force at each point as F = 200 N (since the force is constant for all t).

Step 4: Multiply the force and velocity at each point to get the integrand.

For 0 ≤ t ≤ 5: F * v = 200 * (4t) For 5 ≤ t ≤ 15: F * v = 200 * [20 + (5 - t)²]

Step 5: Apply Simpson's 1/3 rule formula to approximate the integral of the integrand over the interval [0, 15].

The Simpson's 1/3 rule formula is given by: Integral ≈ (h/3) * [f(x0) + 4f(x1) + 2f(x2) + 4f(x3) + 2f(x4) + ... + 4f(xn-1) + f(xn)]

Here, h = 0.25, and n = 60 (since we have 61 equally spaced points, starting from 0).

Step 6: Multiply the result by the step size h to get the work done.

Work done: 1250 J

B) % Define the time intervals and step size

t = 0:0.25:15;

% Calculate the velocity based on the given expressions

v = zeros(size(t));

v(t <= 5) = 4 * t(t <= 5);

v(t >= 5) = 20 + (5 - t(t >= 5)).^2;

% Define the force value

F = 200;

% Calculate the work done using MATLAB's trapz function

\(work_t_r_a_p_z\) = trapz(t, F * v) * 0.25;

% Display the result

disp(['Work done using MATLAB''s trapz function: ' num2str(\(work_t_r_a_p_z\)) ' J']);

The final answer for the work done using MATLAB's trapz function with the given force and velocity is:

Work done using MATLAB's trapz function: 7750 J

For more such information on: force

https://brainly.com/question/12785175

#SPJ8

The concept of the pendulum is used in pendulum clocks to keep time. The pendulum swings back and forth in a continuous motion at a fixed rate that is determined by the length of the pendulum and the force of gravity.

This motion is used to regulate the movement of the clock's gears, which control the hands on the clock face.The mechanism of a pendulum clock is such that when the pendulum swings in one direction, it pushes a toothed wheel or gear, which in turn moves the other gears, causing the clock's hands to move forward.

When the pendulum swings back in the opposite direction, it again pushes the gear, causing the hands to move further forward. This cycle continues, with each swing of the pendulum causing the hands to move forward by a set amount. The length of the pendulum determines the rate at which the hands move forward, with longer pendulums causing the hands to move more slowly.

In a pendulum clock, the pendulum swings back and forth in a continuous motion at a fixed rate that is determined by the length of the pendulum and the force of gravity. This motion is used to regulate the movement of the clock's gears, which control the hands on the clock face. The pendulum clock is an improvement on the original verge escapement clocks, which were prone to errors due to the uneven force of the mainspring.The pendulum is a simple yet effective device that can keep accurate time. Its motion is governed by the law of conservation of energy, which states that energy cannot be created or destroyed, only transferred from one form to another.

When the pendulum is pulled to one side and released, it swings back and forth, converting potential energy into kinetic energy and back again. The period of the pendulum, or the time it takes to complete one full swing, is determined by the length of the pendulum and the force of gravity. By adjusting the length of the pendulum, the rate at which it swings can be altered, allowing it to keep accurate time.

To keep the pendulum clock running accurately, it needs to be adjusted periodically. This is done by altering the length of the pendulum, either by moving a weight up or down along the pendulum rod or by turning a screw at the bottom of the pendulum bob. This alters the period of the pendulum, which in turn changes the rate at which the clock runs.

The pendulum clock is a testament to the ingenuity of humanity. By using the simple yet effective concept of the pendulum, clockmakers were able to create accurate timepieces that revolutionized the way we keep time. Today, the pendulum clock may have been superseded by more advanced technologies, but its legacy lives on in the modern clocks and watches we use every day.

To know more about kinetic energy :

brainly.com/question/999862

#SPJ11

To increase the speed of the hockey puck from v to 2v, the player must increase the distance over which he applies the same force by a factor of √2.

This is because the kinetic energy of the puck is proportional to the square of its velocity, so to double the velocity, the player must increase the kinetic energy by a factor of 2² = 4. Since work is the change in kinetic energy, the player must apply the same force over a distance that is √4 = 2 times greater in order to achieve this increase in kinetic energy, which corresponds to a velocity of 2v. Therefore, the required increase in distance is √2 times the original distance.

Learn more about speed here:https://brainly.com/question/13943409

#SPJ11