The Balmer series for the hydrogen atom corresponds to electronic transitions that terminate in the state with quantum number n = 2 as shown in the figure below. Consider the photon of longest wavelength corresponding to a transition shown in the figure. (a) Determine its energy. eV (b) Determine its wavelength. nm Consider the spectral line of shortest wavelength corresponding to a transition shown in the figure. (c) Find its photon energy. eV (d) Find its wavelength. nm (e) What is the shortest possible wavelength in the Balmer series? (Be sure to consider all values of n, not just those indicated by the arrows in the figure.) nm

Some of the forms which energy can have, are:

- Thermal energy

- Kinetic energy

- Potential energy

- Electric potential energy

- Radiation

Some examples of transformations between different forms of energy, are:

- Potential energy to kinetic energy during the course of a roller coaster.

- Kinetic energy to thermal energy when an object decelerates due to friction while sliding on a surface.

-Kinetic energy to thermal energy when a meteor melts upon entering the atmosphere due to friction.

- Kinetic energy to electric potential energy in a generator.

- Electric potential energy to radiation in a digital screen.

- Electric potential energy to thermal energy in a light bulb.

- Thermal to kinetic energy in a heat engine.

Use these examples to identify energy changing forms around you and write a brief paragraph.

Answer:

4.The atoms are vibrating in place

Explanation:

The answer is;  The atoms are vibrating in place

We know that, molecules in the crystal have a definite position in the crystal and are bonded to each other by electrostatic forces. However, since the molecules have some energy, they vibrate in their positions. Their energy, however, is not high enough to cause them to overcome the strong bonding (unless the crystal is heated or the atoms are irradiated).

Answer: The coefficient of static friction between the coin and the turntable is 0.13.

Explanation:

As we know that,

   Centripetal force = static frictional force

   \(\frac{mv^{2}}{r} = F_{s}\)

or,  \(\frac{mv^{2}}{r} = \mu_{s} \times m \times g\)

     v = \(\sqrt{\mu_{s} \times r \times g}\)

or,  \(\mu_{s} = \frac{v^{2}}{rg}\) ......... (1)

Here, it is given that

       r = 17 cm,      \(\omega\) = 26 rpm,    

and  v = \(r \omega\) ..........(2)

Putting equation (2) in equation (1) we get the following.

\(\mu_{s} = \frac{r^{2}\omega^{2}}{rg}\)

            = \(\frac{17 \times 10^{-2} \times (26 \times [\frac{2 \times \pi}{60}]^{2})}{9.8}\)

            = 0.128

            = 0.13 (approx)

Thus, we can conclude that the coefficient of static friction between the coin and the turntable is 0.13.

Answer:

c.

Equal to 200 N..........

Answer:

hi \( \) \( \)

Answer:

time

Explanation:

Answer:

where u put it last time or retrace ur steps to where u last put it

Answer:

Explanation:

tensile strength is stress that is needed to break the wire made of the material .

Here force required to break the sheet of material = 233 N

cross sectional area of the foil = breadth x thickness

= 5 x 10⁻² x 15 x 10⁻⁶ m²

= 75 x 10⁻⁸ m²

breaking stress = force / cross sectional area

= 233 / 75 x 10⁻⁸

= 3.1 x 10⁸ Pa .

Tensile strength = 3.1 x 10⁸ Pa .

If A box of mass 210 kg is pulled from rest with a string of tension 1300n inclined at 35° to the horizontal. if the box moved with a speed of 10m/s and the frictional force between the box and surface is 100 n, Then the distance covered by the box is 10.89 meters.

To calculate the distance covered by the box, we need to analyze the forces acting on it and apply the work-energy principle.

Given:

Mass of the box, m = 210 kg

Tension in the string, T = 1300 N

The angle of inclination, θ = 35°

Frictional force, f = 100 N

Initial speed, u = 0 m/s

Final speed, v = 10 m/s

First, let's resolve the tension force into components parallel and perpendicular to the incline. The parallel component of the tension force can be calculated as:

T_parallel = T * cos(θ)

Next, let's calculate the net force acting on the box along the incline. The net force is given by:

Net force = T_parallel - f

Now, using Newton's second law, we can calculate the acceleration (a) of the box:

Net force = m * a

From the given information, we have the final velocity (v), initial velocity (u), and acceleration (a). We can use the following kinematic equation to calculate the distance covered (s):

v^2 = u^2 + 2as

Rearranging the equation, we get:

s = (v^2 - u^2) / (2a)

Now, let's plug in the given values and calculate the distance covered:

T_parallel = 1300 N * cos(35°) ≈ 1067.35 N

Net force = 1067.35 N - 100 N = 967.35 N

a = (967.35 N) / (210 kg) ≈ 4.61 m/s^2

s = (10 m/s)^2 - (0 m/s)^2 / (2 * 4.61 m/s^2) ≈ 10.89 m

Therefore, the distance covered by the box is approximately 10.89 meters.

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Answer:

P V = N R T   ideal gas equation

V2 / V1 = T2 / T1      since P, N, R are constant

V2 = 573 / 303 * V1 = 1.89 V1

V = π R^2 h     volume of cylinder

V1 = 3.14 * .05^2 * h1 = .00785 h1

V2 = .0148 h1

A (h1 + h)  = A * h2

h = h2 - h1 = (.0148 - .00785) h1 = .00695 h1     distance moved by piston

Use V1 = N R T1 / P1 = A h1     to calculate h1

h1 = N R T1 / (A * P1)      A * F/A = F        to simplify denominater

h1 = .37 * 8.31 * 303 / (50 * 9.8) = 1.90 m     P = F / A

Δh = .00695 h1 = .0132 m = 1.32 cm

Math should be checked!

Answer:

Because shoes protect our feet from some of the most harmful platforms

Gravel has some small pebbles on it sometimes (or other sharp objects)

Gravel is pretty hard.

Answer:

Wedge

Explanation:

Scissors are a pair of wedges that are combined together.

Answer:

Final speed after 2 seconds = 34.6 m/s

Explanation:

Given:

Initial speed of coin (u) = 15 m/s

Time taken = 2 seconds

Find:

Final speed after 2 seconds

Computation:

Gravitational acceleration of earth = 9.8 m/s²

Using first equation of motion;

v = u + at

or

v = u + gt

where,

v = final velocity

u = initial velocity

g = Gravitational acceleration

t = time taken

v = 15 + 9.8(2)

v = 15 + 19.6

Final speed after 2 seconds = 34.6 m/s

Answer:

Archimedes principle states that when a body is partially/wholly/completely immersed in fluid (liquid or gas),it experiences an upthrust which is equal to the weight of the fluid displaced....

Answer:

3 m/s²

Explanation:

acceleration = Force / mass;  4.5/1.5 = 3

When a student applies a net force of 4.5 Newtons to the 1.5-kilogram textbook, then the magnitude of the acceleration would be 3 meters/second².

The rate of change of the velocity with respect to time is known as the acceleration of the object. Generally, the unit of acceleration is considered as meter/seconds².

As given in the problem, when a student applies a net force of 4.5 Newtons to the 1.5-kilogram textbook, then we have to find the magnitude of the acceleration,

the applied force on the textbook = 4.5 Newtons

the mass of the textbook is 1.5 kilograms

acceleration of the textbook = force / mass

                                             =4.5 Newtons /1.5 kilograms

                                             =3 meters/second²

Thus, the magnitude of the acceleration would be 3 meters/second².

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Answer:

Refraction. A light ray traveling through some plastic has a frequency of 5.5 x 1014 Hz. It is ... making an angle of 32° with the normal to the interface; it passes through the ... [5 points] (a) What is the refractive index of the glass? ... What you do know is the wavelength of the light in glass, 321 nm, and you know the frequency.

Explanation:

The refractive index of Acrylate is determined as: ratio of sine of incident angle to  sine of refractive angle.

The relationship between the angles of incidence and refraction for light or other waves flowing through a border between two different isotropic media, such as water, glass, or air, is described by Snell's law, a formula.

The amount a light ray bends as it travels through different media is measured by the refractive index.

Given that: The refractive index for air is 1.00.

Let the angle of incidence from medium air to Acrylate  is = i

the angle of refraction  from medium air to Acrylate  is = r.

Let the refractive index  for Acrylate  = n.

Then according to Snell's law:

1×sini = n× sinr

n = sini/sinr.

Hence,  the refractive index of Acrylate is ratio of sine of incident angle to  sine of refractive angle.

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Answer:

a) Joules

b) W (symbol for work) (J is symbol for Joules)

c) seconds

d) watts

The time in seconds it will take her to reach a speed of 1.9 m/s is 1.58s.

Time can be defined as the measurable period or duration, during which an action, process, or condition exists or continue.

The time taken for the commuter to reach a speed of 1.9 m/s, can be calculated using the formula below.

Formula:

Where:

make t the subject of equation 1

From the question,

Given:

Substitute these values into equation 1.

Hence, The time in seconds it will take her to reach a speed of 1.9 m/s is 1.58s

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Answer: I think this is the answer, In a collision, there is a force on both objects that causes an acceleration of both objects; the forces are equal in magnitude and opposite in direction. For collisions between equal-mass objects, each object experiences the same acceleration.

Explanation: I had a question similar to this, Hope this helps!

The current through each lamp is  0.545 A and the power dissipated in each lamp is  0.323 W.

In the diagram the batteries are 1.5V each and each lamp has a resistance of 1.1Ω when the switch is closed.

When S₁ is closed. The current is passing through lamps. The lamps are connected in the series connection the current passing through each is same.

Applying KVL through lamps

1.1 I + 1.1 I + 1.1 I + 1.1 I + 1.1 I - 1.5 - 1.5  = 0

5( 1.1 I) = 3

I = 3/5.5 = 0.545 A

Current through each lamp is 0.545 A

The resistor value of each lamp is same and current passing through each lamp is also same.

Therefore, power dissipation through each lamp is also same.

P = I²R = (0.545)²× 1.1 = 0.323 W

Hence, the current through each lamp is  0.545 A and the power dissipated in each lamp is  0.323 W.

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Answer:

v₁ = √[ 2gh / ((A₁ / A₂)² − 1) ]

Explanation:

Use Bernoulli's equation:

P₁ + ½ ρ v₁² + ρgz₁ = P₂ + ½ ρ v₂² + ρgz₂

Since there's no elevation change between points 1 and 2, z₁ = z₂.

P₁ + ½ ρ v₁² = P₂ + ½ ρ v₂²

Assuming incompressible fluid, the volumetric flow rate is the same at points 1 and 2.

Q₁ = Q₂

v₁ A₁ = v₂ A₂

v₂ = v₁ A₁ / A₂

Substituting:

P₁ + ½ ρ v₁² = P₂ + ½ ρ (v₁ A₁ / A₂)²

P₁ + ½ ρ v₁² = P₂ + ½ ρ v₁² (A₁ / A₂)²

P₁ − P₂ = ½ ρ v₁² (A₁ / A₂)² − ½ ρ v₁²

P₁ − P₂ = ½ ρ v₁² ((A₁ / A₂)² − 1)

v₁² = 2 (P₁ − P₂) / (ρ ((A₁ / A₂)² − 1))

v₁² = 2 (ρgh) / (ρ ((A₁ / A₂)² − 1))

v₁² = 2gh / ((A₁ / A₂)² − 1)

v₁ = √[ 2gh / ((A₁ / A₂)² − 1) ]

Answer:

  c)  480 mL

Explanation:

16 fluid ounces is 473.176473 mL exactly. The closest answer choice is ...

  480 mL

_____

1 gallon = 128 fl oz = 3.785411784 liters exactly

Answer:

Gravitational force related to distance because when an object is closer to the center of the earth the stronger the gravitational force is the farther an objects it from the center of the earth the weaker the gravitational force is. For example if you are on the moon there is no gravity because the gravitational force of the moon to the center of the earth is father away then for example standing on earth.

In the parallel combination, the current through R3 is 3 A. In the series combination, the current through R3 is 0.75 A.

To determine the current through resistor R3 in both the parallel and series combinations, we need to apply Ohm's Law and the appropriate formulas for calculating total resistance and current in each configuration.

First, let's consider the parallel combination:

In a parallel combination, the voltage across each resistor is the same. Therefore, the voltage across R3 is also 90 V.

Using Ohm's Law (V = I × R), we can calculate the current flowing through R3 in the parallel combination:

I_parallel = V / R3

= 90 V / 30 Ω

= 3 A

So, in the parallel combination, the current through R3 is 3 A.

Now, let's consider the series combination:

In a series combination, the total resistance is the sum of the individual resistances:

R_total = R1 + R2 + R3

= 60 Ω + 30 Ω + 30 Ω

= 120 Ω

To find the current through the series combination, we can use Ohm's Law:

I_series = V / R_total

= 90 V / 120 Ω

= 0.75 A

Therefore, in the series combination, the current through R3 is 0.75 A.

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Note the complete questions is User

90 V R₁=60 R2=  30, R3 = 30

Based on the circuit above, what would be the current through the R3 resistor in parallel and in series combinantion.

The frequency of the second harmonic is equal to 84 Hz. Therefore, option C is correct.

The frequency of the wave can be described as the number of cycles of a wave in one second. The frequency has S.I. measurement units which can be represented as per second or Hz.

The wavelength can be explained as the distance between the two adjacent regions in phase. Two crests or two troughs are separated by a distance known as wavelength.

Given, the frequency of the wave: f = nν/2L

The n is the number of harmonics, n = 2

For the second harmonics:

f₂ = 2f₀

Given the fundamental frequency of a musical instrument = 42 Hz

f₂ = 2 × 42

f₂ = 84 Hz

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Answer:

a lower energy than

Explanation:

sorry im a month late but is lower energy than

If two blocks are suspended motionless near the surface of Earth by a cord passing over a frictionless pulley, the force exerted on each block by the cord is 50 N

Since each block weighs 50 N, the force exerted on each block by the cord is same.

T1 = T2 = T

W1 = W2 = 50 N

Since the blocks are suspended motionless,

∑ Fy = 0

- W1 - W2 + T1 + T2 = 0

- 50 - 50 + T + T = 0

2 T = 100

T = 50 N

Therefore, the force exerted on each block by the cord is 50 N.

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Louis de Broglie's principle of electrons states that (b) They behave as a wave and a particle.

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