Which famous scientist developed a theory over 350 years ago that helps to explain the characteristics of gravity?.

Answer:

The Answer is: ∴t=150 nm.

Formula: v = s+f/2

v = average velocity

s = starting velocity

f = final velocity

Use what we are given and solve.

v = 0+(-7.68)/2

v = -7.68/2

v = -3.84

Best of Luck!

The first line in the Lyman series, corresponding to the transition from an excited state to the ground state in hydrogen, is in the ultraviolet (UV) range with a wavelength of approximately 121.48 nm.

The Lyman series refers to a set of spectral lines in the emission spectrum of hydrogen. The first line in the Lyman series corresponds to the transition from an excited state to the ground state in the hydrogen atom. To calculate the wavelength of this line, we can use the Rydberg formula:

1/λ = R_H * (1/n_f² - 1/n_i²)

where λ is the wavelength of the spectral line, R_H is the Rydberg constant for hydrogen (approximately 1.097 × 10⁷ m⁻¹), n_f is the final energy level (which is the ground state, n_f = 1), and n_i is the initial energy level (corresponding to the excited state).

Since we want to determine if the first line in the Lyman series is ultraviolet (UV) radiation, we need to check if the calculated wavelength falls within the UV range (typically defined as wavelengths between 10 nm and 400 nm).

Let's assume that the initial energy level is n_i = 2 (corresponding to the transition from the second energy level to the ground state). Plugging the values into the Rydberg formula, we get:

1/λ = 1.097 × 10⁷ m⁻¹ * (1/1² - 1/2²)

= 1.097 × 10⁷ m⁻¹ * (1 - 1/4)

= 1.097 × 10⁷ m⁻¹ * (3/4)

= 8.2275 × 10⁶ m⁻¹

To convert this value to nanometers (nm), we can use the conversion factor 1 m = 10⁹ nm:

λ = 1/(8.2275 × 10⁶ m⁻¹)

= 1.2148 × 10⁻⁷ m

= 121.48 nm

Hence, Since the calculated wavelength of the first line in the Lyman series is approximately 121.48 nm, we can conclude that it falls within the ultraviolet (UV) range.

To learn more about  wavelength click:

brainly.com/question/30611426

#SPJ12

Answer:

Colour of any object is by the colour of light it reflects i.e if white light is incident on the object,it will reflect blue color.so it will appear blue.But if red light is incident on it,it will not reflect that and absorb it.so as it will not reflect any light it will appear black.

Explanation:

Answer:

a=-5.3m/s2

Explanation:

F=-20N

m=3.75kg

a=?

F=am /:m

a=F/m

a=-20N/3.75kg

a=-5.3m/s2

Its surface is cooler than the surface of the sun is the statement that we can infer from its red color.

Betelgeuse is also called Alpha Orionis. It is the second brightest star in the constellation Orion, thus marking the eastern shoulder of the hunter. Its name is derived from the Arabic term, which means “the giant’s shoulder.” It is one of the most luminous stars in the sky at night.

Having an apparent magnitude of about 0.6 it is a variable star. Its size is roughly 764 times as that of the Sun. As the apparent magnitude of this star is 0.6 which is a comparison with the sunlight, we can say it is cooler than the surface of the sun.

Hence the correct option is A.

--The given question is incomplete, the complete question is,

"betelgeuse is the bright red star representing the left shoulder of the constellation orion. all the following statements about betelgeuse are true. which one can you infer from its red color? a) Its surface is cooler than the surface of the Sun. b) It is much more massive than the Sun c) It is much brighter than the Sun d) It is moving away from us

To know more about Betelgeuse, here

https://brainly.com/question/14527447

#SPJ4

Answer: 60cm^3

Explanation:

Here we can use the relationship:

Density = mass/volume.

We know that density = 5g/cm^3 and mass = 50g, then we have:

5g/cm^3 = 50g/V

V = 50g/5g/cm^3 = 10cm^3

Then, when we introduce it in a cylinder with 50cm^3 of water, this is heavier than water (the density of the water is 1g/cm^3) it will sink, and the complete volume will be equal to the volume of the water plus the volume of the object:

Total Volume = 50cm^3 + 10cm^3 = 60cm^3

The hole is 5.10 m underneath the water's surface.

On earth, air is indeed a natural attribute that supports life. It occurs in the atmospheric and is essentially a mixture of many different gases, with oxygen, nitrogen, and carbon dioxide making up the majority of it and argon, water vapor, and other gases making up considerably less of it. Aerosolized dust, spores, and germs are also present in the air.

To breathe, we all require oxygen. All living things, both those that are aquatic and those that are on land, require oxygen to survive. Without the basic component of air, life would not be possible.

To know more about Air visit:

https://brainly.com/question/24167500

#SPJ4

Explanation:

The potential energy of an object has the following formula

         Potential energy = mgh

      where m = mass of the object

                   g = acceleration due to gravity

                   h = height of the object

This means that the potential energy of an object depends upon its mass, acceleration due to gravity, and height.

In the given situation we have a bucket full of water. If the mass and acceleration due to gravity are not changed, the only way the potential energy can be decreased is by reducing the height of the bucket full of water.

This can be done by: -

         (i) Lifting the bucket full of water in such a way that you

             decrease its height as compared to the bench.

        (ii) Put the bucket full of water on a stool whose height is

            lower than the bench.

Answer:

1.By decreasing it's contents- this decreases the weight of the bucket thus decreasing the potential energy of the bucket.

2.By decreasing the height of the bench we have decreased the amount of potential energy stored in the bucket

Answer:

there are a lot so imma just say a few movement,moving,shifting,to and from

Explanation:

Hope this helps

Answer:

Oxidation occurs at the anode and reduction occurs at the cathode

Explanation:

Answer:

when we hit the volleyball. the ball goes up comes down

it comes down as it is forced by gravity

the force in which ball comes back is Newton 3 law

Answer:

B

Explanation:

Because B/5

if i'm wrong sorry but i hope it's help^^

Answer: B 1.52 m/s hope this helps

Explanation: I just took the test

Answer:

39225J

Explanation:

Given parameters:

Mass of water  = 375grams of water

Change in temperature  = 25°C

Specific heat capacity of water  = 4.184J/g°C

Unknown:

Amount of heat absorbed  = ?

Solution:

To solve this problem, we use the expression below:

      H  = m c Ф  

H is the heat absorbed

m is the mass

c is the specific heat capacity

Ф is the change in temperature

  Insert the parameters and solve;

      H  = 375 x 4.184 x (25) = 39225J

The pH of the solution is approximately 4.195, which corresponds to answer choice E.

The benzoic acid and sodium benzoate will react to form a buffer solution. We can use the Henderson-Hasselbalch equation to determine the pH of the buffer:

pH = pKa + log([A-]/[HA])

where pKa is the dissociation constant of benzoic acid (6.30 × \(10^{-5\)), [A-] is the concentration of benzoate ions, and [HA] is the concentration of benzoic acid.

To calculate the concentrations of [A-] and [HA], we need to use the stoichiometry of the reaction. The reaction is:

\(C_6H_5COOH + NaC_6H_5COO\) →\(C_6H_5COO^- + Na^+ + H_2O\)

From this equation, we can see that one mole of benzoic acid reacts with one mole of sodium benzoate to form one mole of benzoate ions and one mole of water. Therefore, the concentration of benzoate ions is:

[A-] = 0.300 mol / 1.00 L = 0.300 M

The concentration of benzoic acid is:

[HA] = 0.150 mol / 1.00 L = 0.150 M

Now we can substitute these values into the Henderson-Hasselbalch equation:

pH = pKa + log([A-]/[HA])

pH = -log(6.30 × \(10^{-5\)) + log(0.300/0.150)

pH = 4.195

Learn more about Henderson-Hasselbalch equation here:

https://brainly.com/question/13423434

#SPJ11

Answer:

1. True 2.0

Explanation:

1. When balanced forces are acting on an object, they have a constant velocity, meaning that the velocity remains the same.

2. When an object begins at a starting point and returns back to that same starting point, its displacement would be 0.

I'm pretty confident in these answers, however, you must have studied this more than me, so let me know if you have any questions or concerns at all, I'll be glad to help. :)

Taking into account the definition of wavelength, frecuency and propagation speed, the wavelength for radio waves with a frequency of 100 MHz is 3 m.

First of all, wavelength is the minimum distance between two successive points on the wave that are in the same state of vibration. It is expressed in units of length (m).

On the other side, frequency is the number of vibrations that occur in a unit of time. Its unit is s⁻¹ or hertz (Hz).

Finally, the propagation speed is the speed with which the wave propagates in the medium, that is, it is the magnitude that measures the speed at which the wave disturbance propagates along its displacement.

The propagation speed relate the wavelength (λ) and the frequency (f) inversely proportional using the following equation:

v = f×λ

All electromagnetic waves propagate in a vacuum at a constant speed of 3×10⁸ m/s, the speed of light.

In this case, you know:

Replacing in the definition of propagation speed:

3×10⁸ m/s = 100,000,000 Hz× λ

Solving:

λ= 3×10⁸ m/s ÷ 100,000,000 Hz

λ= 3 m

In summary, the wavelength for radio waves with a frequency of 100 MHz is 3 m.

Learn more about wavelength, frecuency and propagation speed:

brainly.com/question/2232652

brainly.com/question/7321084

brainly.com/question/14946166

#SPJ1

Answer: goin at a constant rate

Explanation: goes through 0,0

Answer:

A) Variety of Living Things

Explanation:

Biodiversity is defined as the variety of life in the world or in a particular habitat or ecosystem.

Hope I helped! Check out my profile for more answers!

Answer:8h

Explanation:

Answer: 8 h

Explanation:

I got it right

The wave function is a mathematical function that describes the behavior of a particle in terms of its wave-like properties, and it satisfies the Schrödinger equation.

The wave function itself cannot be directly measured or observed, but rather it is used to calculate probabilities of different outcomes of measurements.

The square of the wave function, on the other hand, gives a measurable quantity - the probability density - which can be used to calculate the likelihood of finding a particle in a particular location.

In quantum mechanics, the square of the wave function, denoted as

|Ψ\((x)|^2\), gives the probability density of finding a particle at a particular location in space. The probability density is proportional to the probability of finding the particle at a specific position.

The wave function itself, denoted as Ψ(x), gives the complete description of the quantum state of the particle, including its energy, momentum, and other properties.

To know more about wave function refer here

https://brainly.com/question/17484291#

#SPJ11

Answer:

397 j

Explanation:

Because 5.0kg yuh

The kinetic energy of the block with a mass of 5.0 kg is pushed on a frictionless surface by applying a horizontal force of 80.0 N. The block starts from rest, and its final velocity is 12.6 m/s is 396.9 J.

A moving item or particle has a certain kind of power called kinetic energy. When an item exerts a net force to perform work, which involves the transfer of energy, the object accelerates and as a result, gains kinetic energy.

The amount of kinetic energy that a moving object or particle possesses is determined by both its mass and rate of motion. Any combination of vibration, axis rotation, translation (or movement along a path from one location to another), and translation are all possible motion types.

Given:

The mass of the block, m = 5 kg,

The horizontal force, F = 80 N,

The velocity of the block, v = 12.6 m / s,

Calculate the kinetic energy by the formula given below,

\(KE = 1/2mv^2\)

KE = 1 / 2 × 5 × 12.6²

KE =  1 / 2 × 5 × 158.6

KE = 396.9 J

Therefore, the kinetic energy of the block with a mass of 5.0 kg is pushed on a frictionless surface by applying a horizontal force of 80.0 N. The block starts from rest, and its final velocity is 12.6 m/s is 396.9 J.

To know more about Kinetic energy:

https://brainly.com/question/999862

#SPJ2

The complete question is A block with a mass of 5.0 kg is pushed on a frictionless surface by applying a horizontal force of 80.0 N. The block starts from rest, and its final velocity is 12.6 m/s. ​Find its kinetic energy?

The amount of energy required to change a 39 g ice cube from ice at -12°C to steam at 112°C is 1.032 x 108 J.

Given

The specific heat of ice is 2090 J/kg °C

The specific heat of water is 4186 J/kg °C

The specific heat of stream is 2010 J/kg C

The heat of fusion is 3.33 x 105 J/kg

The heat of vaporiza- tion is 2.26 x 106 J/kg

To Find

ice cube=39g

temperature= -12 °C to  at 112 °C

Solution

To solve this problem, we need to break down the process into different steps and calculate the amount of energy required for each step.

Step 1: Heating the ice from -12°C to 0°C

Energy required = mass of ice x specific heat of ice x change in temperature

Energy required = 39 g x 2090 J/kg °C x (0°C - (-12°C))

Energy required = 980,280 J

Step 2: Melting the ice at 0°C to water at 0°C

Energy required equals mass of ice multiplied by heat of fusion

Energy required = 39 g x 3.33 x 105 J/kg

Energy required = 1.299 x 107 J

Step 3: Heating the water from 0°C to 100°C

Energy required = mass of water x specific heat of water x temperature change

Energy required = 39 g x 4186 J/kg °C x (100°C - 0°C)

Energy required = 1.629 x 106 J

Step 4: Boiling the water at 100°C to steam at 100°C

Energy required = mass of water x heat of vaporization

Energy required = 39 g x 2.26 x 106 J/kg

Energy required = 8.814 x 107 J

Step 5: Heating the steam from 100°C to 112°C

Energy required = mass of steam x specific heat of steam x change in temperature

Energy required = 39 g x 2010 J/kg °C x (112°C - 100°C)

Energy required = 9.354 x 105 J

Total energy required = Energy for Step 1 + Energy for Step 2 + Energy for Step 3 + Energy for Step 4 + Energy for Step 5

Total energy required = 980,280 J + 1.299 x 107 J + 1.629 x 106 J + 8.814 x 107 J + 9.354 x 105 J

Total energy required = 1.032 x 108 J

Therefore, the amount of energy required to change a 39 g ice cube from ice at -12°C to steam at 112°C is 1.032 x 108 J.

To know more about Latent heat of fusion follow

brainly.com/question/87248

Answer:

500Km

Explanation:

This question is an example of speed, distance, time.

The formula for working out the distance is: \(Speed*Time\)

To work this out you would need to multiply the speed of 200Km/h by the time of 2.5 hours, this gives you 500 Km. This is because the formula to work out the distance is speed * time.

In adittion, if the train is traveling at 200km per hour then that means that over the course of an hour the distance travelled would be 200Km. So, by multiplying the speed by the time you are working out how far it travelled in that given time.

1) Multiply 200 by 2.5.

\(200*2.5=500Km\)

Answer:

a. The magnitude of the resultant velocity vector of the fish is approximately 5.83 m/s

The direction of the resultant velocity vector of the fish is approximately 30.93° relative to the direction of the river

Explanation:

A. The average drift speed of the electrons in the wire is  1.19 x \(10^{-3}\)cm/s.

B. The time it would take an electron to travel 8.84 m is 7.43 x \(10^{5}\)sec

(A) To find the average drift speed of electrons in a wire, we can use the equation:

I = nAvq

Where:
I is the current in Amperes
n is the electron density in electrons per \(cm^{3}\)
A is the cross-sectional area of the wire in \(cm^{2}\)
v is the average drift velocity of electrons in cm/s
q is the charge of an electron, which is 1.6 x \(10^{-19}\) Coulombs

First, we need to find the cross-sectional area of the wire. The formula for the area of a circle is:

A = π\(r^{2}\)

Where:
A is the area of the circle
r is the radius of the circle

Given that the wire diameter is 1.63 mm, we can find the radius by dividing it by 2:

r = 1.63 mm / 2 = 0.815 mm = 0.0815 cm

Now, we can calculate the area:

A = \(π(0.0815 cm)^{2}\) = 0.0209 \(cm^{2}\)

Next, we can rearrange the equation to solve for v:

v = I / (nAq)

Given that the current is 20 A and the electron density is 8.47 x \(10^{24}\)electrons per \(cm^{3}\), we can substitute these values into the equation:

v = 20 A / (8.47 x \(10^{24}\) electrons per cm^3 * 0.0209 cm^2 * 1.6 x \(10^{-19}\) C)

Simplifying the expression:

v = 1.19 x \(10^{-3}\) cm/s

Therefore, the average drift speed of electrons in the 14 gauge wire carrying a maximum current of 20 A is approximately 1.19 x \(10^{-3}\) cm/s.

(B) To calculate the time it would take for an electron to travel a distance of 8.84 m, we can use the formula:

t = d / v

Where:
t is the time in seconds
d is the distance in meters
v is the average drift velocity of electrons in meters per second

Given that the distance is 8.84 m and the average drift velocity is 1.19 x 10^-3 cm/s, we need to convert the velocity to meters per second:

v = 1.19 x \(10^{-3}\) cm/s * 0.01 m/cm = 1.19 x \(10^{-5}\) m/s

Now, we can substitute the values into the formula:

t = 8.84 m / 1.19 x \(10^{-5}\)m/s

Simplifying the expression:

t = 7.43 x \(10^{5}\)s

Therefore, it would take approximately 7.43 x \(10^{5}\) seconds for an electron to travel a distance of 8.84 m.

Know more about distance here:

https://brainly.com/question/26550516

#SPJ8

The displacement of SHO at which the energy half kinetic and half potential is

A/√2

How to calculate displacement if KE and PE are half?

In case of, no frictional forces on a simple harmonic oscillator the kinetic and potential energies of the simple harmonic oscillator are transformed alternatively, but total mechanical energy is conserved.

At equilibrium position the total energy of the simple harmonic oscillator is equal to kinetic energy

The potential energy U of a simple harmonic oscillator at a given displacement x from the equilibrium position is given as follows:

U=1/2kx²

Here, k is the spring constant.

The kinetic energy K of a simple harmonic oscillator at a given displacement is given as follows:

K=1/2mv²

Here, m is the mass attached to the spring, and v is the speed of the mass at a given displacement.

The total mechanical energy E of a system is equal to the sum of potential energy U and kinetic energy K.

E=U+K

Substitute,

E=1/2kx²+1/2mv²

At extreme position, the displacement x is equal to amplitude A, and speed of oscillator is equal to zero.

Substitute

E=1/2kA²+12m(0)²

E=1/2kA²

Now,  if the total mechanical energy is proportional to square of the amplitude of the simple harmonic oscillator, then, the potential energy U of a simple harmonic oscillator at a given displacement x is,

U=1/2kx²

Equate half of total mechanical energy and potential to find the displacement.

E/2=U

Substitute

1/2(1/2kA²) =1/2kx²

A²/2=x²

x=A/√2

The displacement of SHO at which the energy half kinetic and half potential is

A/√2

To know more about displacement, click on brainly.com/question/321442

#SPJ4

Answer: If you are pushing a box toward your friend with a force of 20 N, and your friend is pushing the box toward you with a force of 30 N, what will happen to the box? The box will move toward your friend with a force of 50 N.

Explanation: