the speed of light with a wavelength 589 nm in light flint glass is 1.90x108 m/s. what is an index of refraction of the glass at this wavelength?

Answer:

Hello There!!

Explanation:

The answer is b. solenoid.

Answer:

J = 500 kg-m/s

Explanation:

Given that,

Initial speed of the motor, u = 5 m/s

Final speed of the motor, v = 7 m/s

Mass of the boat, m = 250 kg

We need to find the impulse applied by the motor. We know that impulse is equal to the change in momentum. It is represented by letter J.

J = m(v-u)

J = 250 (7-5)

J = 500 kg-m/s

Hence, the impulse applied by the motor is 500 kg-m/s.

The kinetic energy of the 1.6 g particle with a speed of 0.80c is approximately\(4.608 * 10^(16) Joules\).

The kinetic energy (KE) of an object can be calculated using the formula:

\(KE = (1/2) * m * v^2\)
where m is the mass of the object and v is its speed.

In this case, the mass (m) of the particle is 1.6 g, which needs to be converted to kilograms:

m = 1.6 g * (1 kg / 1000 g) = 0.0016 kg

The speed (v) of the particle is given as 0.80c, where c is the speed of light. To use this speed in the formula, we need to convert it to meters per second:

\(v = 0.80 * c = 0.80 * 3.00 * 10^8 m/s = 2.40 * 10^8 m/s\)

Now, we can calculate the kinetic energy:

KE = \((1/2) * 0.0016 kg * (2.40 * 10^8 m/s)^2\)
KE ≈ \(4.608 * 10^(16) Joules\)

So, the kinetic energy of the 1.6 g particle with a speed of 0.80c is approximately\(4.608 * 10^(16) Joules\).

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a. Why electrons in atoms don't radiate all their energy away rapidly.

The planetary model of the atom, proposed by Rutherford, described electrons orbiting around a nucleus similar to planets orbiting around the sun. However, according to classical electromagnetism, an accelerated charged particle should continuously lose energy in the form of radiation and eventually spiral into the nucleus. This behavior was not observed experimentally, and it contradicted the stability of atoms.

To address this issue, the Bohr model of the atom was proposed, which incorporated the concept of quantized energy levels and specific orbits for electrons. It explained why electrons do not radiate all their energy away rapidly and described stable electron orbits that maintained the integrity of the atom.

Therefore, the failure of the planetary model to explain why electrons in atoms don't radiate all their energy away rapidly led to the development of the Bohr model.

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4.40 times 103 yd is not equivalent to 2.50 miles.

So, the correct answer is D.

To determine which of the given options is not equivalent to 2.50 miles, we need to convert 2.50 miles to the respective units given in the options.

2.50 miles is equivalent to 4.02 times 103 km, which rules out option (c).

Now, we need to convert 2.50 miles to ft and in to compare with options (a), (b), and (e). 2.50 miles = 1.32 times 104 ft, which matches option (a), so it is equivalent to 2.50 miles.

Finally,

2.50 miles = 1.32 times 104 ft = 1.58 times 105 in, which matches option (e).

Therefore, the answer is option (D), 4.40 times 103 yd, as it is not equivalent to 2.50 miles.

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At the equator, there is no deflection due to the Coriolis effect, which is zero. Here option B is the correct answer.

The Coriolis effect is a phenomenon that occurs due to the rotation of the Earth. It causes moving objects, including air and water masses, to appear to deflect to the right in the Northern Hemisphere and to the left in the Southern Hemisphere. However, at certain latitudes, the Coriolis effect is zero and produces no deflection.

One such latitude where the Coriolis effect is zero is at the equator (option b). This is because the equator is the only latitude where the Earth's rotational speed is the same as the speed of the objects on its surface. As a result, there is no apparent deflection of moving objects at the equator.

At the poles (option a), the Coriolis effect is the strongest, causing objects to deflect the most. This is because the rotational speed of the Earth is the smallest at the poles. As a result, moving objects appear to deflect at a right angle to their direction of motion.

At 30-degree latitude circles (option e), the Coriolis effect is present but relatively weak, causing only a slight deflection of moving objects. This is because the rotational speed of the Earth is still relatively high at this latitude, but not as high as at the equator.

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40cm³ is  volume of a metal block measures 10cm×2cm×2cm and 5 blocks have the same total volume.

volume=l×b×h

volume=10cm×2cm×2cm= 40cm³

volume=l×b×h

volume= 2cm×2cm×2cm=8cm³

blocks have the same total volume= 40cm³/8cm³= 5

The space occupied inside an object's borders in three dimensions is referred to as its volume. It is sometimes referred to as the object's capacity. Finding an object's volume can help us calculate the quantity needed to fill it, such as the volume of water needed to fill a bottle, aquarium, or water tank.

A sphere is the most basic and typical form of a three-dimensional shape. We see spheres on a regular basis in the form of balls, globes, ornamental lights, oranges, etc.

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Answer:

4.26 m/s

Explanation:

h = 0.925

v = 0

u = ?

v = u^2 - 2gh

0 = u^2 - 2gh

u = sqrt 2gh

= sqrt 2*9.8*0.925

= 4.258

= 4.26

The peripheral field of vision is more sensitive to light and motion and orients individuals to the environment.

Field of vision refers to the total area that an individual can see without moving the eyes. It comprises the central and peripheral fields of vision. The central field of vision is the area directly in front of an individual, whereas the peripheral field of vision is the area beyond the central field of vision. The peripheral field of vision detects movement and light and orients individuals to their environment. As a result, the peripheral field of vision is more sensitive to light and motion and orients individuals to the environment.

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Answer:

A) 30h

B) Scalar quantity

Explanation:

Part A

[Note: v represents speed, d represents distance, and t represents time]

Given:

\(d = 600 km\)

\(v = 20 km/h\)

Required:

\(t = ?\)

Analysis:

\(v = \frac{d}{t} \\t = \frac{d}{v}\)

Solution:

\(t = \frac{d}{v} \\t = \frac{600 km}{20 km/h} \\t = 30 h\)

Statement:

Therefore, the ship was sailing for 30 hours.

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Part B

This is a scalar quantity because time only has magnitude and can never be given direction so it can never be a vector quantity.

The speed of the chain at this instant is 8.47 m/s. The change in energy of the chain is 204.8J. The increase in thermal energy of the chain is 25.6J.

Acceleration(a) of Centre of mass = F/m = 64/5 = 12.8 m/s2

a) v2 = u2 + 2as,....(1)

v is final velocity of centre of mass,

u is the initial velocity of centre of mass,

s is the displacement of centre of mass

s = d - L/2 = 3.2 - 0.4 = 2.8m

using equation 1,

V = \(=\sqrt{2as} =\sqrt{2*12.8*2.8}=8.47 m/s.\)

Therefore, the speed of the chain at this instant is 8.47 m/s.

2. Change in energy = Total Work Done = Force*Displacement of point on which force is applied = 64*3.2 = 204.8J

Therefore,  the change in energy of the chain is 204.8J

3. Change in Thermal Energy = Change in Energy - Change in Kinetic Energy = 204.8 - 0.5*m*v2

Change in Thermal Energy = 204.8 - 0.5*5*8.47*8.47 = 25.6J

Therefore, the increase in thermal energy of the chain is 25.6J.

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The frame of reference of a witness watching a gunfight from the other side of the street would be an inertial frame of reference.

An inertial frame of reference is a frame of reference where, excluding external forces, a body in motion maintains a constant speed in a straight line, and a body at rest remains at rest. In this instance, the witness is stationary in relation to the street and is not speeding up while watching the gunfight. As a result, the witness's frame of reference can be regarded as inertial.

It is important to remember that the witness's frame of reference would not be inertial if they were moving or speeding up while watching the gunfight, and they would have to account for this when doing so.

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Answer:

2n answer of 6

place it at the place of ?mark

The linear expansivity of the metal is 4.44 × \(10^{-6}\) /°C.

What is Temperature?

Temperature is a measure of the degree of hotness or coldness of a substance or object, expressed in terms of a numerical scale. It is a physical property that determines the direction of heat transfer between two bodies in thermal contact. The most commonly used scales for temperature measurement are Celsius, Fahrenheit, and Kelvin.

Linear expansivity is defined as the change in length per unit original length per degree Celsius change in temperature.

Let the initial length of the metal be L1 = 15.01 m and the change in temperature be ΔT = 60°C.

The final length of the metal is L2 = 15.05 m.

The change in length of the metal is:

ΔL = L2 - L1

ΔL = 15.05 m - 15.01 m

ΔL = 0.04 m

The linear expansivity α can be calculated as:

α = ΔL / (L1 ΔT)

α = 0.04 m / (15.01 m × 60°C)

α = 4.44 ×\(10^{-6}\) /°C

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Answer: It has the skill to nest

sorry if I'm wrong

Answer:

B: A colorful beak

Explanation:

i hope this helped!

Answer:

can you make it clear i do not understand.

Explanation:

Answer:

inertia

Explanation:

Answer:

Inertia

Explanation:

Because, it's Newton's First Law.

Answer:

8 MPH

Explanation:

How to calculate for speed?

Speed is calculated by dividing the distance traveled by the time it takes to travel that distance.

In our case, the bike travels 4 miles in half an hour (0.5 hours). So, its speed is 4 miles divided by 0.5 hours, which gives us a speed of 8 miles per hour.

Therefore, the bikes speed is 8 MPH.

Answer:

\(\Huge \boxed{\boxed{\text{Speed = 8 mph}}}\)

Explanation:

To calculate the speed, we can use the following formula:

\(\LARGE \boxed{\text{Speed = $\frac{\text{Distance}}{\text{Time}}$}}\)

In this case, the distance traveled is 4 miles and the time taken is half an hour, which is equivalent to 0.5 hours.

\(\Large \boxed{\text{Speed = $\frac{\text{4 Miles}}{\text{0.5 Hours}}$}}\)

\(\LARGE \boxed{\text{Speed = 8}}\)

Therefore, the speed of the bike is 8 miles per hour.

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When Lorraine puts the tennis ball in the container of olive oil, it will float on the surface of the oil because the density of the tennis ball (970 kg/m³) is less than the density of the olive oil (900 kg/m³).

Density is a measure of the mass of a substance per unit volume. It is an important physical property of matter and is used to identify substances, compare the same substances in different states, and measure the concentration of substances in solutions. Density is expressed in terms of grams per cubic centimeter or pounds per cubic foot. Density is also a fundamental concept in the study of fluid mechanics, since the density of a fluid determines its pressure and its behavior when acted upon by external forces.

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Answer:

Total Resistance in circuit is Fourteen Ohms (14 Ω).

Explanation:

How do we know, if the resistors are connected in series, the total resistance is the sum of all the resistors.

(Important: The total resistance can only be added just when the resistors are connected in series)

Then, total resistance (TR ) is the sum of all resistors (T1 + T2, in this case)

TR = T1 + T2

According to problem data, we have:

TR = 8 Ω + 6 Ω

TR = 14 Ω

                                                                              ║Sincerely, ChizuruChan║

Answer:

f =-20 cm

Explanation:

Given that,

The magnification of a spherical mirror, m = -1

The image distance, v = 40 cm (for negative magnification)

The magnification of a concave mirror is negative. The mirror showing -1 magnification is a concave mirror.

Let f be the focal length of the mirror. We know that,

\(m=\dfrac{-v}{u}\\\\-1=\dfrac{-v}{u}\\\\v=u\)

Object distance, u = -40 cm

Using mirror's formula i.e.

\(\dfrac{1}{f}=\dfrac{1}{u}+\dfrac{1}{v}\\\\f=\dfrac{1}{\dfrac{1}{-40}+\dfrac{1}{-40}}\\\\f=-20\ cm\)

So, the focal length of the mirror is 20 cm.

Answer:

Radio wave :

The wavelength of an electromagnetic wave is measured to be 600 m.

Explanation:

All remain are given in attachment!

Answer:

21.2m/s

Explanation

Given data

P=6.36 x 10⁴kg·m/s.

M=3000kg

From the momentum expression

P=mv

v=p/m

Substitute

v=63600/3000

v=21.2m/s

Hence the Velocity is 21.2m/s

The speed of the truck is 21.2 m /s

Momentum is the product of the mass of the object and the velocity of the object. Therefore,

p = mv

where

m  = mass

v = velocity

m = 3000 kg

p = 6.36 x 104 kg·m/s.

lets find the velocity

6.36 x 10⁴  = 3000 × v

v = 6.36 x 10⁴ / 3000

v = 21.2 m / s

The speed of the truck is 21.2 m /s

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B        BRIANLIEST PLS

Explanation:

Answer:

yes it is

Explanation:

Answer:

The bigger the energy source the more light it makes

Answer:

Energy effects light by heat, and radiation. and the depth of it and how big and other things, radiation can change the appearance slightly and heat also.

for example energy can make light, the light bulb in my opinion is electricity turned off and on Etc.

Energy can be made by light also, and other things that are completely complicated. Just look into generators and how they do that and etc.

Answer:

(d) is not affected practically

Explanation:

A bird sitting on a high power line is not affected practically.

This is because both of its legs are at the same potential, and current cannot flow through its body.

Answer:

option D

Explanation:

The bird sitting on a high power line but the bird is not touching ground by its body parts .

Hence there is no way electricity can pass through its body to earth

Thus it won't get any shock .

Answer:

Yes

Explanation:

Rubbing a balloon with wool cloth will create static electricity charges. If you place small pieces of tissue paper near the balloon in Picture 2, they would probably stick to the balloon.

Answer:

4.2 m/s

the balls final speed is V (m/s)

because the clay ball hits another and the two stick together

=> 0,35.4,2 + 0,35.4,2 = (0,35 + 0,35).V

<=> 2,94 = 0,7V

<=> V = 2,94/0,7 = 4,2

For a clay ball with a mass of 0.35 kg, the ball's final speed is mathematically given as

V2= 4.2

Question Parameter(s):

A clay ball with a mass of 0.35 kg

Hits another 0.35 kg ball at rest and the two stick together.

The first ball's initial speed is 4.2m/s.

Generally, the equation for the conservation of momentum is mathematically given as

M1v1=m2v2

Therefore

0.35*4.2 + 0.3*5.4.2 = (0.35 + 0.35)*V

2,94 = 0,.7V

V2 = 2.94/0.7

V2 = 4.2

In conclusion

V2= 4.2

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