What is the frequency of a wave with a wavelength of 7.88 x 10^(-8) m?

Answer:

Astronauts who are orbiting the Earth often experience sensations of weightlessness. These sensations experienced by orbiting astronauts are the same sensations experienced by anyone who has been temporarily suspended above the seat on an amusement park ride. Not only are the sensations the same (for astronauts and roller coaster riders), but the causes of those sensations of weightlessness are also the same. Unfortunately however, many people have difficulty understanding the causes of weightlessness.

Explanation:

Given parameters:-

To find:-

Solution:-

Here , we are provided frequency of electromagnetic wave and we have to find the wavelength of the wave. To find the wavelength we have to divide the speed of light by given frequency. therefore,

\(\tt\red{wavelength( \lambda)= \frac{speed(c)}{frequency(f)}}\)

\( \rightarrow \sf \: \lambda = \frac{3 \times {10}^{8} }{8.2 \times {10}^{14} } \\ \\ \rightarrow \sf \: \lambda = \frac{3 \times {10}^{8} \times {10}^{ - 14} }{8.2} \\ \\ \rightarrow \sf \: \lambda = 0.36 \times {10}^{6} \\ \\ \rightarrow \sf \: \lambda = 36 \times {10}^{4}m\)

Answer:

A.

Explanation:Object b will get a negative charge .

Answer:

c

Explanation:

tbh I think it is c because of what the explanation says so

Answer:

D

Explanation:

because i got it right when guessing its d

The given statement is true. The path of red light is deflected by a larger angle than blue light when passing through a glass prism.

What is a glass prism? A glass prism is a solid material that consists of a transparent optical element with flat and polished surfaces that are arranged at angles to each other. When white light is passed through a glass prism, it gets refracted into the colors of the spectrum. Each of these colors has different wavelengths and frequencies which leads to the separation of these colors. This phenomenon is known as dispersion.

How does light behave when passing through a glass prism? When light passes through a glass prism, it refracts or bends due to the change in speed of light in different media. The speed of light in glass is different from that in air. Therefore, the light bends towards the normal or the perpendicular line drawn at the point of incidence of the light ray.The amount of bending of light or refraction of light depends on the angle of incidence of light and the angle of the prism. The amount of refraction is different for different colors or wavelengths of light. The shorter the wavelength of light, the more it gets refracted or bent. The longer the wavelength of light, the less it gets refracted or bent.

So, the path of red light is deflected by a larger angle than blue light when passing through a glass prism. This is because red light has a longer wavelength compared to blue light.

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The pressure also doubled when the temperature did. answer P2=2atm.

According to Gay-Lussac Law, pressure and temperature have a direct relationship: P1/T1=P2/T2.

As long as the volume is kept constant, pressure and temperature will both rise or fall together.

The pressure would also double if the temperature did. The energy of the molecules would grow with increased temperature, and more collisions would occur, increasing pressure.

Double the temperature of a sample of gas that is at STP 1 atm and 273 K.

1atm/273K=P₂/546K\sP₂=2atm

The pressure increased by the same factor as the temperature.

Everything we eat, drink, or use contains energy. The fundamental body functions of the body are powered and governed by energy.

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Answer:

monkey tunky funky luncky

Answer:

The Force of Friction!

Explanation:

I hope I could help you, Brainliest please!

Answer:

The manner in which the Earth's movement affect how the Sun is seen is;

The Sun is stationary, but Earth's rotation makes it appear to move East to West across the sky

Explanation:

The Earth's movement affect the way the Sun is seen

The Sun appears to rise in the Eastern part of the sky and continues in motion till the it sets at the Western part of the sky

However, the Sun does not actually move relative to the Earth as seen in the sky. The observed motion of the Sun is due to the counterclockwise  rotation of the Earth about its axis

Therefore, the Earth's movement affect the way the Sun is seen by making the Sun appear to move across the sky from East to West

Answer:

The sun stays still but the rotation of the earth makes it look like it goes east to west.

Explanation:

On a wet road, you would need to adjust your speed to 5-10 mph slower than normal.So option a is correct.

On a wet road, you should adjust your speed to ensure that you can drive safely. This is because water causes tyres to lose traction with the road. If you increase your speed on a wet road, you'll have less control over your vehicle. When the road is wet, your vehicle's tyres may not be able to grip the road as well as they would on a dry road.When driving on wet roads, you should maintain a safe distance between your vehicle and the car in front of you. This provides you with enough space to stop safely if the car in front of you stops suddenly.In addition, when driving on wet roads, it's best to avoid sudden steering or braking movements. This will cause your car to skid. Therefore, you should slow down and move more gently on a wet road, and always adjust your speed to 5-10 mph slower than normal.Therefore option a is correct.

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The height of the cliff from the rock is thrown with an initial velocity of 8.2 m/s is 56.14 m

The formula for the downward vertical launch and the procedure we will use is:

y = V₀*t + (gt²) /2

Where:

Information about the problem:

With the information gave, we can calculate the height from the rock is thrown, using the formula of downward vertical launch:

y = V₀*t + (gt²) /2

y = (8.2 m/s * 2.65 s) + [9.8 m/s² *  (2.65 s)²] /2

y = (21.73 m) + [9.8 m/s² * 7.0225 s²] /2

y = (21.73 m) + 68.821 m /2

y = 21.73 m + 34.41 m

y = 56.14 m

In physics vertical launch is the motion described by an object that has been launched vertically in which the acceleration is the earth's gravitational force.

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On the surface of Mars, the period of the simple pendulum is approximately 2.27 seconds.

The period of a simple pendulum is given by the formula T = 2π√(L/g), where T represents the period, L is the length of the pendulum, and g is the acceleration due to gravity.

To find the period on the surface of Mars, we need to calculate the length of the pendulum using the given values of T and g for Mars. Rearranging the formula, we have L = (\(T^2\) * g) / (4\(\pi ^2\)).

Substituting the values into the equation, L = (1.\(60^2\)* 3.71) / (4\(\pi ^2\)). Evaluating this expression, we find L ≈ 0.532 m (rounded to three decimal places).

Using this length and the acceleration due to gravity on Mars (g = 3.71 \(m/s^2\)), we can calculate the period on Mars using the original formula. T = 2π√(0.532/3.71). After performing the calculation, we find that the period on the surface of Mars is approximately 2.27 s (rounded to two decimal places).

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Answer:

32kg

Explanation:

Given parameters:

Speed of the dog  = 3.8m/s

Kinetic energy  = 231.04J

Unknown:

Mass of Mr.Plamer's dog = ?

Solution:

Kinetic energy is the energy due to the motion of a body;

Mathematically, it is represented as;

      K.E  = \(\frac{1}{2}\) m v²

  m is the mass

  v is the velocity

Insert the parameters and solve;

        231.04  = \(\frac{1}{2}\)  x m x 3.8²

        231.04 x 2  = 2 x  \(\frac{1}{2}\)  x m x 3.8²

           462.08  = 14.44m

               m  = 32kg

The activity of the source in Becquerel is 333.3Bq

The number of nuclei that disintegrate or decay per unit time is known as Activity.

Given that a sample of radioactive material emits 400000 particles over a period of 20 minutes.

Activity A = dN/dt

A = 400000 / 1200

A = 333.3 particles / s

A = 333.3 Bq

Therefore,

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Answer:

I think it's moving towards the reference point

Answer:

read explanation

Explanation:

Due to this reason a gas (air) a conductor of electricity at low pressure. ... It is because when the gas is at very low pressure positive charged ions are not available to eject out the electron from the cathode hence the discharge current stops.No, vacuum cannot conduct electricity.

The current through the circuit after 12.5 ms is 2.5864 A.

The characteristic time constant of a 23.2 mh inductor that has a resistance of 4.21 ω is 5.82115 ms.

If it is connected to a 12.0 v battery, the current after 12.5 ms will be 2.5864 A.

Below are the steps to get to the answer:(a) Calculate the characteristic time constant of the circuit using the formula:τ = L/RWhere τ is the time constant, L is the inductance of the inductor, and R is the resistance of the circuit.tau=23.2mH/4.21Ω=5.82115ms

Hence, the characteristic time constant of the circuit is 5.82115 ms.

(b) To calculate the current through the circuit, we need to use the formula:i = (V/R) [1 - e(-t/τ)]Where i is the current, V is the voltage of the battery, R is the resistance of the circuit, t is the time, and τ is the characteristic time constant of the circuit.i = (12/4.21) [1 - e(-12.5/5.82115)]i = 2.5864

Hence, the current through the circuit after 12.5 ms is 2.5864 A.

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As a white dwarf loses nuclear fusion energy, the dwarf cools by radiating all the stored heat and energy outward.

Any of a group of dim stars known as white dwarf stars that mark the culmination of the evolution of intermediate- and low-mass stars. White dwarf stars, so named because the initial handful that were found were white, are distinguished by having low luminosities, masses similar to the Sun, and radii that are similar to Earth's. Such stars are dense and compact objects with typical densities nearing 1,000,000 times that of water due to their high mass and short dimensions.

The degeneracy pressure of the electron gas inside white dwarf stars acts as a support. Degeneracy pressure is the greater resistance put forth by the gas's electrons as a result of the contraction of the star (see degenerate gas). The study of the equilibrium structure of white dwarf stars using so-called Fermi-Dirac statistics and special relativity results in the existence of a mass-radius relationship, wherein a white dwarf with a given mass is given a specific radius; the larger the mass, the smaller the radius. Additionally, it is predicted that there is a limiting mass above which no stable white dwarf star can exist. The Chandrasekhar limit refers to this limiting mass, which is on the order of 1.4 solar masses.

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Answer:

They store floodwater

Explanation:

Total Cost is =  $107,380 if The farm is 340 acres and had corn planted  add fertilizer to the soil before you plant this years' crop.

A fertiliser is a natural or artificial substance containing chemical elements (such as Nitrogen (N), Phosphorus (P) and Potassium (K)) that improve growth and productiveness of plants. Some synonyms include the terms "enrichment" or "plant nutrient".

Without fertilizers, nature struggles to replenish the nutrients in the soil. When crops are harvested, important nutrients are removed from the soil, because they follow the crop and end up at the dinner table. If the soil is not replenished with nutrients through fertilizing, crop yields will deteriorate over time.

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The current needed to produce such a field at the center of the loop is 0 Amperes. The magnetic field at the center of a loop is always zero, regardless of the current in the loop.

Current is the flow of electrons through a conductive material, usually an electrical conductor, such as a wire. Electricity is the movement of these electrons within a system, such as a circuit. It is an important part of modern life, used to power many of the devices and appliances we use on a daily basis. Current is measured in amperes (amps) and is produced by a voltage source, such as a battery or generator. It is then distributed through a system of wires and devices to provide electricity to homes, businesses, and other locations.

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The initial total kinetic energy of the system can be calculated by summing the individual kinetic energies of the two masses.

The final speed of the system can be found using the principle of conservation of momentum. The final total kinetic energy is determined by calculating the kinetic energy of the combined mass. The increase in internal energy can be obtained by subtracting the final total kinetic energy from the initial total kinetic energy.

(a) The initial total kinetic energy (K) is the sum of the individual kinetic energies of the two masses. Since both masses have the same mass (7 kg) and the same speed (12 m/s), their individual kinetic energies are equal. Therefore, the initial total kinetic energy is:

K = 2 * (1/2 * m * v^2) = 2 * (1/2 * 7 kg * (12 m/s)^2) = 1008 J.

(b) The final speed (Vf) of the system can be found using the principle of conservation of momentum. The momentum before the collision is zero since one mass is stationary and the other has a velocity of 12 m/s. After the collision, the two masses stick together, so their combined momentum is zero. Therefore, the final speed of the system is zero.

(c) The final total kinetic energy (Kp) is the kinetic energy of the combined mass. Since the final speed is zero, the final total kinetic energy is also zero.

(d) The increase in internal energy is the difference between the initial and final total kinetic energies:

Increase in internal energy = K - Kp = 1008 J - 0 J = 1008 J.

Therefore, the increase in internal energy of the two masses is 1008 J

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The equation of the position of string from the center is 3.0 sin(2π × 440t), the maximum values of acceleration, velocity and jek are 1.29 × 10⁴ m/s², 8.26 m/s and 1.29 × 10⁴ m/s³.

(a) The following equation describes the position of the string's center as a function of time,

y(t) = A sin(2πft), where A is the amplitude (3.0 mm), f is the frequency (440 Hz), and t is time. Substituting the given values, we get,

y(t) = 3.0 sin(2π × 440t)

(b) The maximum value of the magnitude of the velocity of the center of the string occurs when the displacement is maximum, i.e., at t = 0. Therefore,

vmax = 2πfA

vmax = 2π × 440 × 3.0 × 10⁻³

vmax = 8.26 m/s

For acceleration,

amax = 4π²f²A

amax = 4π² × 440² × 3.0 × 10⁻³

amax = 1.29 × 10⁴ m/s²

(c) The jek of the center of the string as a function of time is given by:

j(t) = Aω²cos(2πft) where ω is the angular frequency, given by ω = 2πf.

The maximum value of the magnitude of the jek occurs when the displacement is zero, i.e., at t = T/4, where T is the period of the string. Substituting the given values, we get,

jmax = Aω²

jmax =  4π²f²A

jmax = 1.29 × 10⁴ m/s³.

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Answer:

I think the answer is d; as the object is revolving around the earth in a circular motion due to centripetal force provided by gravity and if you "turned off" the gravity then it would tend to continue away from the planet but in the same direction.

Reason: The quantity work has to do with a force causing a displacement. Work has nothing to do with the amount of time that this force acts to cause the displacement. Sometimes, the work is done very quickly and other times the work is done rather slowly. For example, a rock climber takes an abnormally long time to elevate her body up a few meters along the side of a cliff. On the other hand, a trail hiker (who selects the easier path up the mountain) might elevate her body a few meters in a short amount of time. The two people might do the same amount of work, yet the hiker does the work in considerably less time than the rock climber. The quantity that has to do with the rate at which a certain amount of work is done is known as the power. The hiker has a greater power rating than the rock climber.

Power is the rate at which work is done. It is the work/time ratio. Mathematically, it is computed using the following equation.

Power = Work / time

or  

P = W / t

Answer:

The focal length of a lens is the distance between the lens and the image sensor when the subject is in focus, usually stated in millimeters.

this is refering to a camera lens, not glasses and what not, glasses do not have a focus length, only equipment that has the ability to focus

Explanation:

May I have brainliest please? :)

Option D i.e. sliced fresh tomatoes with basil and balsamic vinegar has the lowest energy density among the given choices.

The mass of a substance per unit of volume is termed as its density. Density is most frequently represented by the symbol, however Latin letter D may also be used sometimes. Mass divided by volume is the definition of density in mathematics: where is the density, m is the mass, and V is the volume.

The units of mass divided by volume used to measure density include grammes per centimetre cube (g/cm3) and kilogrammes per litre (kg/l).

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The nurse should insert the needle at a 45-degree angle to ensure proper medication administration into the subcutaneous tissue.

When administering a subcutaneous injection, the nurse inserts the needle at a 45-degree angle to ensure proper medication administration. This angle allows for even distribution of the medication in the subcutaneous tissue, facilitating absorption and therapeutic effect. The subcutaneous tissue has a rich blood supply, and the medication is absorbed through capillaries in this layer. The 45-degree angle ensures that the medication reaches the appropriate depth without hitting muscle or bone. It also balances effective delivery with patient comfort, minimizing pain and tissue trauma. Inserting the needle at a steeper angle could cause the medication to be delivered too deeply, potentially causing discomfort or injury. Proper injection techniques, including selecting the correct needle length and angle, are crucial for safe and accurate administration of subcutaneous medications.

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