What type of current does a battery produce?

It makes a fairly small circle over the course of a day since it is so close to the celestial equator. As a result, Polaris is a trustworthy indicator of the north since it always remains in nearly the same location in the sky.

The stars move continuously and are not fixed. When the daily arcing motion of the stars across the sky caused by the rotation of the earth is taken into account, you are left with a pattern of stars that appears to remain constant.

The star in the middle of the star field, Polaris, appears to be stationary. Polaris sits almost straight under the equator, hence this star is said to move the least. Due to Earth's rotation on its axis, the other stars seem to move in arcs.

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Answer:

A national park is one such protected area for the special species of flora and fauna of the region. In Nepal, there are numerous national parks to conserve and protect wildlife and their natural habitat.

Answer:

An object slides down an inclined plane at a constant velocity if the net force on the object is zero. We can use this fact to measure the coefficient of kinetic friction between two objects.

Explanation:

give me brainliest please!

Answer:

Hertz is the answer for this question

With the use of formulas,  the force of gravity on the satellite is 4563.8 N and the speed of the Satellites is 7764.5 m/s

It states that the force of attraction between two object is proportional to the product of the masses and inversely proportional to the square of the distance between them.

Assume that a satellite with a mass of 500kg orbits Earth 225km above its surface. Given that the mass of Earth is 5.97 x 10^24 kg and the radius of Earth is 6.38 x 10^6 m.

(A) The force of gravity that acts on the satellite will be

F = GMm/r²

Where

Substitute all the parameters

F = (6.67 × 10^-11 × 5.97 x 10^24  × 500)/6605000²

F = 4563.8 N

(B) The speed of the Satellites orbit will be

v = √GM/r

v = √(6.67 × 10^-11 × 5.97 x 10^24 )/6605000

v = √60287509.5

v = 7764.5 m/s

Therefore, the force of gravity that acts on the satellite is 4563.8 N and the speed of the Satellites orbit is 7764.5 m/s

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Explanation:What is centripetal acceleration?

Can an object accelerate if it's moving with constant speed? Yup! Many people find this counter-intuitive at first because they forget that changes in the direction of motion of an object—even if the object is maintaining a constant speed—still count as acceleration.

Acceleration is a change in velocity, either in its magnitude—i.e., speed—or in its direction, or both. In uniform circular motion, the direction of the velocity changes constantly, so there is always an associated acceleration, even though the speed might be constant. You experience this acceleration yourself when you turn a corner in your car—if you hold the wheel steady during a turn and move at constant speed, you are in uniform circular motion. What you notice is a sideways acceleration because you and the car are changing direction. The sharper the curve and the greater your speed, the more noticeable this acceleration will become. In this section we'll examine the direction and magnitude of that acceleration.

The figure below shows an object moving in a circular path at constant speed. The direction of the instantaneous velocity is shown at two points along the path. Acceleration is in the direction of the change in velocity, which points directly toward the center of rotation—the center of the circular path. This direction is shown with the vector diagram in the figure. We call the acceleration of an object moving in uniform circular motion—resulting from a net external force—the centripetal acceleration

a

c

a

c

​

a, start subscript, c, end subscript; centripetal means “toward the center” or “center seeking”.

Answer:

23 cm from the mirror

Explanation:

1a: Potential energy is the type of energy that a cart has at the top of the track.

1b: In the middle of the track, the cart has both potential energy and kinetic energy.

1c: At the bottom of the track, the cart has only kinetic energy.

2: At the middle and bottom of the track, the total energy would be: E = 1/2mv2 + mgh/2 - HE.

1a: Potential energy is the type of energy that a cart has at the top of the track. The formula for potential energy is as follows:

P.E = mgh where m represents the mass of the cart, g is the gravitational acceleration (9.8 m/s2), and h is the height of the cart from the ground.

1b: In the middle of the track, the cart has both potential energy and kinetic energy.

In the formula for kinetic energy, KE = 1/2mv2 where m represents the mass of the cart, and v represents the velocity of the cart.

1c: At the bottom of the track, the cart has only kinetic energy.

The formula for kinetic energy is the same as above:

KE = 1/2mv2 where m represents the mass of the cart, and v represents the velocity of the cart.

2: In the presence of friction, the total energy at each location (top, middle, and bottom) will change.

This is because friction converts some of the energy into heat.

At each location, the total energy will decrease.

The formula for total energy is E = KE + PE where KE is kinetic energy and PE is potential energy. In the presence of friction, the formula for total energy will become E = KE + PE + HE where HE is the energy that is lost due to friction.

For example, at the top of the track, the total energy would be:

E = mgh - HE where HE represents the energy that is lost due to friction.

Similarly, at the middle and bottom of the track, the total energy would be: E = 1/2mv2 + mgh/2 - HE.

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The thermal capacitance of the coil is neglected with respect to the tank wall and the tank liquid. Energy balance is done only on the tank liquid. Option C is the correct answer.

The consequence of neglecting the thermal dynamics of the cooling coil in a stirred tank can vary depending on the specific situation and the magnitude of the neglected effects. However, in general, neglecting the thermal capacitance of the cooling coil in relation to the tank wall and the tank liquid can have the following consequences:

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An object moves in the xy plane in above figure and experiences a friction force with constant magnitude 3.00N :Along each step of motion, to overcome friction you must push with, (b) the purple path O to C followed by a return blue path to O.

The value of the pressure is the wide variety that represents the energy of the force. for instance: assume the pressure is = 10 N in the direction of the east. 'towards east' shows route whilst '10' is the magnitude of the force. So basically, value is the 'value' or 'amount' of any physical quantity.

A magnitude is represented by means of a nice actual wide variety. put clearly, a value is the size of a few amount. as an example, the significance of an earthquake, measured at the Richter scale, usually varies between 1 and 10 and represents the scale of the earthquake.

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ANSWER

A. 100 Hz

EXPLANATION

Given:

• The velocity of the wave, v = 300 m/s

• The wavelength, λ = 3 m

Find:

• The wave's frequency, f

The frequency of a wave with a wavelength λ and a velocity v is,

Replace the known values and solve,

Hence, the frequency of the wave is 100 Hz.

Answer:

a) F = 5.14 10⁻⁸ Hz,  f = 4.76 10-8 Hz,  b)   v = 2.29 m / s,   f = 42.5 Hz

Explanation:

a)This problem has two parts.

For the calculations relative to the planet Venus, we use that the period and the frequency are related

            f = 1 / T

frequency of the orbit around the Sun

Let's reduce the period to the SI system

           T = 225 days (24h / 1days) (3600 s / 1h) = 1.94 10⁷ s

           F = 1 / 1.94 10⁷

           F = 5.14 10⁻⁸ Hz

rotation frequency

            T = 243 d = 2.1 107 s

             f = 1 / T

             f = 1 / 2.1 107

            f = 4.76 10-8 Hz

b) give the data of some marine waves

the speed of the wave can be found with kinematics

            v = x / t

            v = 50.0 / 21.8

            v = 2.29 m / s

If the wavelength is L = 9.28m

this distance is the distance between two consecutive ridges or valleys

             λ / 2 = L

             λ = 2L

             λ = 2 9.28

             λ = 18.56 m

the speed of the wave is

             v = λ f

             f = v /λ

             f = 2.29 / 18.56

             f = 42.5 Hz

Answer:

C. 1.3 x 10-11 F

I took the test and got this correct, hope this helps

Explanation:

An interior designer is choosing a paint color for a room and has two samples that are both blue, however one blue is described as brighter than the other. Both would have the same wavelength but would differ due to the amplitude property of light.

The amplitude plays an important part in differentiating the same colors of the same wavelength. It tells us about the brightness or intensity of a certain light wave as compared to others of the same wavelength. So, whenever two same colors look different due to brightness, it is due to the amplitude property of the light.

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The new electrostatic force will be 384 units.  

The electrostatic force of attraction between two charges \(q_{1} \\\)(charge of object 1)  and \(q_{2}\)(charge of object 2) separated by a distance d is given by

\(F = \frac{q_{1} q_{2}}{4\pi E_{0} d^{2} } \\\)

\(E_{0} = 8.854 * 10^{-12} C^{2} N^{-1} m^{-1}\) is the permittivity of free space.

Initially, we have,

\(\frac{q_{1} q_{2}}{4\pi E_{0} d^{2} } =F_{1} = 8 units\)  

Now, if the charge of object 1 is multiplied by 1, the charge of object 2 is multiplied by 3, and the distance separating objects 1 and 2 is divided by 4, we have, \(q_{1} =q_{1}, q_{2} =3q_{2} , d=\frac{d}{4}\).

The new electrostatic force will be,

\(F_{2} = \frac{q_{1} 3q_{2}}{4\pi E_{0} (\frac{d}{4} )^{2} } \\\\\) units.

We have, \(F_{1} = 8 units= \frac{q_{1} q_{2}}{4\pi E_{0} d^{2} } \\\)

Hence,

\(F_{2} =\frac{8*3}{(\frac{1}{4}) ^{2} } units= 384 units.\)

Hence, the new electrostatic force will be 384 units.

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The number of parking spaces that the parking lot has, given the length of the parking lot, is 32 parking spaces.

To find out how many parking spaces the parking lot has, first we need to determine the total length of the row where parking spaces will be created.

Length of the row for parking spaces = Total length of the parking lot - Length not painted for cars to turn

= 316 feet - 28 feet = 288 feet

Now that we know the length of the row for parking spaces, we can calculate how many 9-foot-wide spaces will fit in this row.

Number of parking spaces = Length of the row for parking spaces / Width of each parking space

= 288 feet / 9 feet = 32 parking spaces

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Answer:

Weight varies with location depending upon the acceleration due to gravity eg. for a mass m = 10kg on Earth it`s weight is W = mg = 10 x 10 = 100N.

Explanation:

Near Earth's surface, the weight of an object in newtons is  10 times its mass in kilograms. This relationship of the acceleration is due to gravity on Earth, which is 9.81 m/s².

Mathematically, it can be expressed as:

Weight (in newtons) = Mass (in kilograms) × Acceleration due to gravity

So, an object with a mass of, for example, 5 kg, its weight near the Earth's surface would be:

Weight = 5 kg × 9.81 m/s² = 49.05 N

The weight in newtons is roughly 10 times the mass in kilograms of objects near the Earth's surface. The given statement is correct.

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Human activity is responsible for recent changes in the atmosphere i.e. the last option , projected data for future atmospheric conditions at current rates of change.

Therefore we can said that, The last option from the question projected data for future atmospheric conditions at current rates of change, states that human activity is to responsible for recent changes in the atmosphere.

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Answer:

Ff = u M g    frictional force where u = .62

1/2 M v^2    kinetic energy of water bottle at release

Ff * d = 1/2 M v^2 = u M g d   work to stop equals initial kinetic energy

v^2 = 2 u g d = 2 * .62 * 9.8 * 12 = 146 m^2 / s^2

v = 12.1 m/s

The main answer is that Carrie has the load that is easier to lift.

The explanation is that the weight of an object is directly proportional to its volume, which is determined by its length, width, and height.

Since Mary has a single piece of lumber that is 2.44 m long, it has a greater volume than Carrie's two pieces that are only 1.22 m long. Therefore, Mary's load will be heavier and more difficult to lift.

In summary, the length of the lumber affects its weight, and since Mary has a longer piece than Carrie, her load is heavier and more difficult to lift.

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The required total momentum of the system at this instant is calculated to be 9.16 kg m/s.

Given that,

Mass of the first cart, m₁ = 2.5 kg

Mass of the second cart, m₂ = 1.3 kg

Velocity of the first cart before collision, u₁ = 4.6 m/s

Velocity of the second cart before collision, u₂ = -1.8 m/s

The total momentum of the system before collision is calculated as follows,

P t = P₁ + P₂

P t = m₁ u₁ + m₂ u₂ = 2.5 × 4.6 + (1.3 × -1.8) = 11.5 - 2.34 = 9.16 kg m/s

Thus, total momentum of the system of the two carts at this instant is 9.16 kg m/s.

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Thermometer can measure the oral temperature of a child within 25 seconds: C. Tympanic membrane thermometer

The thermometer that can measure the oral temperature of a child within 25 seconds is the tympanic membrane thermometer. This type of thermometer is designed to measure the body temperature by detecting infrared radiation emitted by the tympanic membrane (eardrum).

Tympanic membrane thermometers, also known as ear thermometers, are known for their quick and accurate readings. They have a probe that is gently inserted into the ear canal, and within seconds, the thermometer captures the infrared radiation emitted by the tympanic membrane to determine the body temperature.

Compared to other types of thermometers, such as glass thermometers or electronic thermometers with blue-tipped probes, the tympanic membrane thermometer provides a faster measurement time, making it suitable for measuring the oral temperature of a child who may not stay still for a long period.

It is important to follow the manufacturer's instructions and guidelines for proper usage and accurate readings when using a tympanic membrane thermometer or any other type of thermometer.

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Answer:

F = ⅔ F₀

Explanation:

For this exercise we use Coulomb's law

         F = k q₁q₂ / r²

let's use the subscript "o" for the initial conditions

          F₀ = k q² / r²

now the charge changes q₁ = q₂ = 2q and the new distance is r = 3 r

we substitute

          F = k 4q² / 9 r²

          F = k q² r² 4/9

          F = ⅔ F₀

Answer:

22425 J

Explanation:

From the question,

Applying

Q = cm(t₂-t₁).................. Equation 1

Where Q = Thermal Energy, c = specific heat capacity of aluminium, m = mass of aluminium, t₂ = Final Temperature, t₁ = Initial Temperature.

Given: c = 897 J/kg.K, m = 1.0 kg, t₁ = 50 °C, t₂ = 25 °C (The final temperature is reduced by half)

Substitute these values into equation 1

Q = 897×1×(25-50)

Q = 897×(-25)

Q = -22425 J

Hence the thermal energy lost by the aluminium is 22425 J

Answer:

its the For a fossil to form, several conditions have to be met. First of all, the animal had to live in the given area! Animals live in many environments on Earth, but not everywhere. The water above many lake bottoms and many areas of the deep ocean bottom are stagnant. The bottom water is never exchanged with surface waters, so the water contains no dissolved oxygen. Animals cannot live without oxygen, so no animals live there. In these situations, the only possibility of fossilization is if a fish or other swimming animal dies in oxygen-rich waters above, sinks down into the stagnant muddy bottom, and is buried by sediments.

Explanation:

its the For a fossil to form, several conditions have to be met. First of all, the animal had to live in the given area! Animals live in many environments on Earth, but not everywhere. The water above many lake bottoms and many areas of the deep ocean bottom are stagnant. The bottom water is never exchanged with surface waters, so the water contains no dissolved oxygen. Animals cannot live without oxygen, so no animals live there. In these situations, the only possibility of fossilization is if a fish or other swimming animal dies in oxygen-rich waters above, sinks down into the stagnant muddy bottom, and is buried by sediments.

The generator power will be 59 kW. Power drop is the main factor for finding the generated power.

The maximum power input allowed to pass through a piece of equipment is known as the equipment's power rating.

Power drop = 5%

The relation of the frequency change with the power drop is;

\(\rm \frac{df}{dp} =5\%\\\\ \frac{f_{rated-f_1}}{P_{rated}-P_1}=0.05\\\\ \frac{f_{rated-60}}{100-61}=0.05\\\\ f_{rated}=61.95\)

For the grid frequency, 59.9 Hz

\(\rm \frac{f_{rated-f_2}}{P_{rated}-P_2}=0.05\)

\(\rm \frac{61.95-f_2}}{100-P_2} =0.05\\\\ 100-P_2 =20(61.95-59.9)\\\\P_2=100-41 \\\\ P_2=59 \ kW\)

Hence, the generator power will be 59 kW.

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Answer:

below

Explanation: When a liquid changes into a gas vaporization has occurred. The process can either occur due to boiling or evaporation. Boiling occurs when the vapor pressure of the liquid is raised (by heating) to the point where it is equal to the atmospheric pressure.

You can use thermal energy to change a liquid into a gas.

By virtue of its temperature, a system in a condition of thermodynamic equilibrium has thermal energy, or internal energy. Unlike the energy of systems that are not in a state of thermodynamic equilibrium, thermal energy cannot be transformed into meaningful work as quickly.

For instance, the same fluid or solid in a thermodynamic equilibrium state with the same energy (as thermal energy) cannot do work unless it is combined with another substance at a different temperature, as in a heat engine. However, the same fluid or solid in a moving state with the same energy (as mechanical energy) can be converted to work in some mechanical device, such as a windmill or a waterwheel.

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Therefore, the change in the field strength is a decrease of 35/36 times the initial field strength at the surface of the Earth.

The change in the field strength as you move from the surface of the Earth to a point above the surface can be determined using the inverse square law for gravitational fields. According to this law, the field strength decreases with the square of the distance from the center of the Earth.

Let's denote the field strength at the Earth's surface as E₀ and the distance from the Earth's center as R (radius of the Earth). The field strength at a point 5 times the Earth's radius above the surface would be given by:

E = E₀ × (R / (6R))²

Simplifying this expression:

E = E₀ × (1/36)

So, the change in the field strength would be:

Change in field strength = E - E₀ = E₀ × (1/36) - E₀ = -35/36 × E₀

Therefore, the change in the field strength is a decrease of 35/36 times the initial field strength at the surface of the Earth.

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