a spaceship is moving at a speed of 0.900 c relative to the earth. what is the ratio of the lenght of the spacecraft

The peak resistor voltage is approximately 7.05 V.

To solve for the resistor voltage, we first need to calculate the peak voltage across the resistor. We can use the voltage divider formula to do this:

Vr = Vsource * (R / (R + Xc))

Where Vr is the peak voltage across the resistor, Vsource is the peak voltage of the AC source (9.00 V), R is the resistance of the resistor, and Xc is the reactance of the capacitor at the frequency of the AC source.

Since this is a high-pass RC filter, the reactance of the capacitor can be calculated using:

Xc = 1 / (2 * pi * f * C)

Where f is the frequency of the AC source and C is the capacitance of the capacitor.

Without knowing the frequency or capacitance, we cannot solve for Xc. However, we do know that the peak capacitor voltage is 5.6 V. We can use this information to calculate the reactance of the capacitor using:

Xc = Vc / Ic

Where Vc is the peak voltage across the capacitor (5.6 V) and Ic is the peak current through the capacitor.

Since the capacitor is in series with the resistor, the current through both components is the same. Therefore, we can use Ohm's Law to calculate the peak current:

Ipeak = Vpeak / Rtotal

Where Vpeak is the peak voltage of the AC source (9.00 V) and Rtotal is the total resistance of the circuit (R + Xc).

Substituting the given values, we get:

Ipeak = 9.00 V / (R + Xc)

And:

Xc = 5.6 V / Ipeak

We can now solve for the resistor voltage using the voltage divider formula:

Vr = Vsource * (R / (R + Xc))

Substituting Xc with the expression we just derived, we get:

Vr = 9.00 V * (R / (R + (5.6 V / (9.00 V / (R + Xc)))))

To find the resistor voltage in a high-pass RC filter connected to an AC source, we can use the Pythagorean theorem. Given that the peak voltage of the AC source is 9.00 V, and the peak capacitor voltage is 5.6 V, we can calculate the peak resistor voltage (V_R) using the formula:

V_R = √(V_Source² - V_Capacitor²)

V_R = √(9.00² - 5.6²)
V_R = √(81 - 31.36)
V_R = √49.64

V_R ≈ 7.05 V

The peak resistor voltage is approximately 7.05 V.

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The longest wavelength of electromagnetic radiation that will eject photo-electron from the sodium metal is 544 nm.

Electromagnetic radiation consists of waves of electromagnetic field, which propagates through space and carries momentum and electromagnetic radiant energy.

Minimum energy required to knock out an electron from the surface of the metal is called the work function.

As we know that, W= hc/λ

h -- Planck's constant ; c -- Speed of light

and λ is Longest wavelength

Given, work function of sodium metal is 2.28 eV

As 1 eV = 1.6021 * 10^-19 J

=2.28 * 1.6021 * 10^-19

= 3.65 *10^-19 J

W= hc/ λ

3.65 *10^-19 = 6.62 *10^-34 * 3 *10^8/ λ

λ = 5.44 * 10 ^-7m

λ =544 nm

The longest wavelength of electromagnetic radiation that will eject photo-electron from the sodium metal is 544 nm.

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The internal energy of a monatomic ideal gas is given by the equation:

U = (3/2) nRT

where U is the internal energy, n is the number of moles of gas, R is the gas constant, and T is the temperature in Kelvin.

At the initial state, the gas is at a temperature of T0 and a pressure of P0. The number of moles is given as one, so we have:

U0 = (3/2) RT0

To find the final internal energy and the work done by the gas, we need to know whether the heat is added at constant pressure or constant volume. Let's consider each case separately:

Case 1: Heat is added at constant pressure

If the heat is added at constant pressure, then the change in internal energy is given by:

ΔU = q - PΔV

where q is the heat added, P is the constant pressure, and ΔV is the change in volume.

Since the gas is monatomic, its molar specific heat at constant pressure is Cp = (5/2)R. Thus, the heat added at constant pressure is given by:

q = nCpΔT

where ΔT is the change in temperature.

Since the pressure is constant, we have:

ΔV = nRΔT/P

Substituting these expressions into the equation for ΔU, we get:

ΔU = nCpΔT - PΔV

ΔU = nCpΔT - nRΔT

ΔU = n(Cp - R)ΔT

The work done by the gas is given by:

W = -PΔV

Substituting ΔV from above, we get:

W = -nRΔT

The final internal energy is given by:

Uf = U0 + ΔU

Uf = U0 + n(Cp - R)ΔT

Uf = (3/2) RT0 + (5/2)RΔT

Case 2: Heat is added at constant volume

If the heat is added at constant volume, then the change in internal energy is given by:

ΔU = q

Since the volume is constant, the gas does no work, so W = 0.

The heat added at constant volume is given by:

q = nCvΔT

where Cv is the molar specific heat at constant volume, which for a monatomic gas is Cv = (3/2)R.

Substituting these expressions into the equation for ΔU, we get:

ΔU = nCvΔT

ΔU = (3/2) RT0

The final internal energy is given by:

Uf = U0 + ΔU

Uf = (3/2) RT0 + (3/2) RT0

Uf = 3 RT0

Therefore, the initial internal energy of the gas is (3/2) RT0. The final internal energy and work done by the gas depend on whether the heat is added at constant pressure or constant volume. If the heat is added at constant pressure, then the final internal energy is given by (3/2) RT0 + (5/2)RΔT, and the work done by the gas is -nRΔT. If the heat is added at constant volume, then the final internal energy is given by 3 RT0, and the work done by the gas is 0.

Answer:

Cosmic Radiation.

Terrestrial Radiation.

Internal Radiation.

Explanation:

Answer: Cosmic Radiation.

Terrestrial Radiation.

Internal Radiation.

Explanation:

Answer:

As with other forms of electromagnetic radiation, X-rays can be described as coupled waves of electric and magnetic fields traveling at the speed of light (about 300,000 km, or 186,000 miles, per second).

Explanation:

hope it's help

It is True. Motorcyclists should ride in the wheel tracks of the vehicle directly in front of them on wet roads.

This is because the water will be pooled between these tracks, leaving less water on the tire and allowing better contact with the road surface, which is important for maintaining traction, stability and control. True, motorcyclists should ride in the wheel tracks of the vehicle directly in front of them on wet roads. Motorcyclists should maintain a safe distance and speed from the vehicle in front of them to avoid collisions or accidents on the road. By doing this, the motorcycle will have a better grip on the wet surface of the road, which will help in maintaining control on the motorcycle.

When driving on wet roads, motorcyclists should ride in the wheel tracks of the vehicle directly in front of them. By doing this, the motorcycle has better contact with the road surface, which will help in maintaining traction, stability and control. It is important for motorcyclists to maintain a safe distance and speed from the vehicle in front of them to avoid any collisions or accidents on the road.

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Answer:

I think it's TRUE because forces change an object's motion but dont quote me on it ok? Cause I'm not a 100 percent sure

The collision, Miguel is moving in the opposite direction at 1.2 m/s.

Define collision.

A collision in physics is any situation in which two or more bodies quickly exert forces on one another. Despite the fact that the most common usage of the word "collision" refers to situations in which two or more objects clash violently, the scientific usage of the word makes no such assumptions.

Miguel's post-collision velocity can be determined using the law of conservation of momentum.
Momentum is a vector quantity and is equal to mass times velocity (p=mv). Before the collision, the momentum of the system (Miguel + Fernando's car) is equal to (m1=72kg)(v1=4m/s) + (m2=125kg)(v2=0m/s) = 782 kg*m/s.
After the collision, the momentum of the system is equal to (m1=72kg)(v1=?m/s) + (m2=125kg)(v2=2m/s) = 782 kg*m/s.
By solving for v1 we can find that Miguel's post-collision velocity is -1.2 m/s.
This means that after the collision, Miguel is moving in the opposite direction at 1.2 m/s.

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Gravitational force between two people of 85kg mass is calculated as 1.936 * 10^-8 N

The gravitational force pulls the objects having mass towards each other. This force is responsible for keeping your body on the ground. Objects with mass exerts a gravitational force on other objects with mass.

In physics, gravitation is defined as the force that pulls two masses toward each other. Every single particle of matter in the universe exerts gravitation on every other particle. The terms gravitation and gravity both are used for the attraction between everything with energy or mass.

F= G*M*m/R^2

Given, M= 85kg  ;  m= 85kg

R= 5m ;  G= 6.7*10^-11 Nm²kg-²

F=  6.7*10^-11  * 85 *85 /5^2

Gravitational force = 1.936 * 10^-8 N

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Distance traveled in a given amount of time is equal to the average speed. utilizing the formula s=ut+21at2s=510+212102s=50+100=150m.

By understanding how far an object is from us, we may calculate its actual size. It is possible to calculate the space that an object takes up in the sky. The actual size of an object can then be determined by taking into account its distance. The further away something is, the smaller it appears.

A common metric length from around three feet, 3 inches is called a metre. This proves that in the metric system, a meter is a measuring unit. Objects up to one meter in length include yardsticks, baseball bats, and guitars. Distances in sporting events like run and swimming are also measured in meters.

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Answer:

a.

b.

Explanation:

The change in tire's angular velocity is

Now,

Therefore,

Part B.

The average angular acceleration is given by

Now,

and

Therefore,

which is our answer!

Answer:

The mass of a spacecraft is the same on earth as the moon.

W = F = M a    the weight is different because the acceleration due to gravity is less on the moon than it is on earth.

On could choose a different mode of acceleration, say a compressed spring, and find that mass of an object does not depend on gravitational attraction.   F = M a holds on the moon as well as on earth

The chi-square test assumes that the variables being analyzed are measured at a nominal or ordinal level of measurement.

In statistics, the level of measurement refers to the nature and properties of the data being collected. There are four levels of measurement: nominal, ordinal, interval, and ratio. Nominal and ordinal levels are considered categorical, while interval and ratio levels are considered numerical. The chi-square test is specifically designed for analyzing categorical data, where the observations can be classified into distinct categories or groups. It is used to determine whether there is a significant association or relationship between two categorical variables.

The test calculates the difference between the observed frequencies and the expected frequencies under the assumption of independence between the variables. It compares the observed and expected frequencies using a chi-square statistic and determines the p-value to assess the statistical significance of the association. Therefore, the chi-square test assumes that the variables being analyzed are measured at a nominal or ordinal level because it deals with categorical data and evaluates the relationship between different categories or groups.

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An earthquake is a sudden release of energy in the Earth’s crust that creates seismic waves. These seismic waves travel through the Earth and can cause destruction of property and human life.

The type of seismic wave that causes the most destruction during an earthquake is the surface wave. Surface waves are formed when the energy released by an earthquake is transmitted through the Earth’s crust. These waves travel along the surface of the Earth and can cause extensive damage to structures near the epicenter of the earthquake. This is because surface waves have a greater amplitude than other types of seismic waves, meaning they are more powerful.

The energy released by these waves can cause buildings to collapse, bridges to buckle, and roads to crack. Surface waves can also cause landslides and soil liquefaction, which can lead to further destruction of property. Surface waves can also cause damage to human life. These waves can cause the ground to shake violently, which can cause people to fall and be injured. The shaking can also cause objects to fall from shelves or walls, which can lead to injury or death. Additionally, surface waves can cause tsunamis if the earthquake occurs near a body of water, which can lead to significant loss of life.

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Answer:

House and Senate.

Explanation:

declares war, regulates interstate and foreign commerce and controls taxing and spending policies.

Compared to visible or ultraviolet light, infrared (IR) radiation has [lower] energy.A molecule's internal bonds vibrate when it absorbs IR radiation, and each [ wavelength] produces a band in the molecule's IR spectrum.

Between visible light and X-rays on the electromagnetic spectrum is ultraviolet light.The wavelength range of UV "light" is between 10 and 400 nanometers. The wavelength of VL is about Four hundred nanometers. Hospitals use UV rays because of their potency to sterilize medical equipment. All living cells are destroyed by the high UV radiation doses. Elephants cover themselves in mud to shield themselves from the sun. Under UV light, scorpions glow. UV radiation is a type of non-ionizing radiation that is emitted by artificial sources like tanning beds and the sun. While it can produce vitamin D, which is good for people, there are also potential health risks. The sun is a natural source of UV radiation for us.

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Both students experience the same gravitational force and travel the same vertical distance between the floors, the magnitude of the work done on both students by the gravitational force is the same.

The magnitude of the work done on student 1 by the gravitational force is equal to the magnitude of the work done on student 2 by the gravitational force.

The work done by the gravitational force can be calculated using the formula

Work = Force * Distance * cos(theta)

In this case, the force is the weight of the students, which is the same for both students since they have the same mass.

The distance is the vertical height between the first floor and the second floor. The angle theta between the direction of the force and the direction of displacement is 0 degrees since the force and displacement are in the same direction.

Since both students experience the same gravitational force and travel the same vertical distance between the floors, the magnitude of the work done on both students by the gravitational force is the same.

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(a) The mass at time t=0 is 460 grams. (b) Rounding to at least one decimal place, the mass last after 45 years is about 119.0 grams.

(a) To find the mass at time t=0, we alternative into the given characteristic:

m(0) = \(460e^(-0.03(0))\)

Since \(e^0\) is the same for at least one, we've got:

m(0) = 460(1) = 460 grams

Therefore, the mass at time t=0 is 460 grams.

(b) To locate the mass final after 45 years, we substitute t=45 into the given function:

m(45) = \(460e^(-0.03(45))\)

Using a calculator or software program, we will evaluate the expression:

m(45) ≈ \(460e^(-1.35\)) ≈ 460(0.2587) ≈ 118.96 grams

Rounding to at least one decimal location, the mass last after 45 years is about 119.0 grams.

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The correct question is:

"Certain radioactive material decays in such a way that the mass remaining after t years is given by the function m(t)=460e −0.03t where m(t) is measured in grams. (a) Find the mass at time t=0. Your answer is (b) How much of the mass remains after 45 years? Your answer is a Round answer to 1 decimal place."

Answer:

Stars i think

Explanation:

Answer:

79%

Explanation:

The following data were obtained from the question:

Input temperature = 100°C

Output temperature = 22°C

Efficiency =.?

Next, we shall convert the temperature from celsius to Kelvin temperature. This is illustrated below:

T (K) = T (°C) + 273

Input temperature = 100°C

Input temperature = 100°C + 273 = 373K

Output temperature = 22°C

Output temperature = 22°C + 273 = 295K

The efficiency of the locomotive can be obtained as follow:

Input temperature = 373K

Output temperature = 295K

Efficiency =.?

Efficiency = output /input x 100

Efficiency = 295/373 x 100

Efficiency = 79%

Therefore, the efficiency of the locomotive is 79%.

A. Total momentum in a closed system is conserved

the law of momentum conservation states that The total amount of momentum before the collision is the same as the total momentum after the collision. Regardless of the change of momentum of each object.

Answer:

trailers

Explanation:

Some vehicles, like trailers, have different rules for registration and renewal

Before registering a trailer, you will generally need to submit a signed title to verify your ownership. Alternately, you might be able to use a manufacturer’s statement of origin.

You will also need to sign and submit an application for the license and title of the trailer, along with receipts of applicable property taxes. Finally, you will need to pay the registration fees.

Before you make a trip to the DMV, make sure to have two forms of photo ID on hand to verify your identity when you speak with an agent. For example, your driver’s license might serve as the primary form of ID, and a passport could serve as the second.

If you do not have a passport, you could use a military identification card instead. If your only form of photo ID is your driver’s license, be sure to have other forms of identification on hand, such as your birth certificate and the card with your Social Security number.

Hence Some vehicles, like trailers, have different rules for registration and renewal.

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Answer:

B generator

Explanation:

Answer:

A swimming pool appears shallower than it really is due to the phenomenon of REFRACTION. Due to refraction, from rarer medium( Air ) to denser medium ( water ), the pool looks shallower

Explanation:

Answer:

I dont know but nice question

Explanation:

I laughed super hard when I saw this

Answer: When an object falls, its gravitational potential energy is changed to kinetic energy. You can use this relationship to calculate the speed of the object's descent.

The response is C. It has bulk and occupies room. All substance has a volume and takes up space, whether it be a solid, liquid, or gas. It is a basic characteristic of matter. While matter can move from hot to cold and perform work.

A metal-skinned hull, steam propulsion, and a main armament of guns equipped to fire explosive shells are the three qualities that define a fighting ironclad. All of these innovations reached their full maturity with the French Navy's November 24, 1859, launch of the "Gloire," but the US Civil War saw the invention of the ironclad.

Any attribute that may be measured, such as a substance's mass, volume, length, density, colour, malleability, or melting point Properties of matter include point, hardness, smell, temperature, and more.

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Answer: D

Explanation:

Answer:

\(4x - 6 = 90 \\ 4x = 96 \\ \boxed{x = 24}\)

Now, AD is an altitude of∆ABC

Therefore, D is the midpoint of BC

\(x + 7 = 2x - 15 \\ \boxed{x = 22}\)

CD is (22+7) = 29 & DB is (2×22-15) = 29

\( \huge \boxed{\: x = 24 }\\ \huge \boxed{CD \: and \:DB= 29}\)