List of priceless your bodies from largest to smallest in terms of their distance from earth

Answer: 326m

Explanation:

To find the the wavelength of the radio waves, we can use the equation:

Wavelength = c/f

where,

c = 3 × 10^8 m/s

f = 920 × 10^3 kHz

Wavelength = 3 × 10^8 / 920 × 10³

Wavelength = 326.08696

Wavelength = 326m

The length of the pendulum is measured from the lower part of the wooden clamp, because the center of gravity is at the center of the bob.

The simple pendulum's length, l is determined by measuring it from the point of suspension to the center of gravity (center of the bob), which is the place where all of this sphere's mass is concentrated.

The center of the mass will exactly reside in the center of the bob when we take the bob's dimensions into account.

As a result, the total length is now equal to the length of the string plus the bob's radius. The length is thus measured from the lower part of the wooden clamp.

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The rms voltage measured across the secondary coil is 565.68 V.

The root mean square (RMS) value of an alternating current (AC) or voltage is the equivalent steady direct current (DC) value that produces the same heating effect or power dissipation in a resistor. In other words, it is the DC voltage or current that would produce the same amount of heat as the AC voltage or current over a given time period.

The rms voltage (V_rms) across the secondary coil can be calculated using the formula:

V_rms,secondary = (N_secondary/N_primary) * V_rms,primary

where N_secondary is the number of turns in the secondary coil, N_primary is the number of turns in the primary coil, and V_rms,primary is the rms voltage across the primary coil.

The rms voltage across the primary coil can be found from the given voltage function:

V_rms,primary = (1/√2) * V_peak,primary

where V_peak,primary = 200 V is the peak voltage across the primary coil.

Substituting the values, we get:

V_rms,primary = (1/√2) * 200 V = 141.42 V

Now, using the formula above, we can calculate the rms voltage across the secondary coil:

V_rms,secondary = (700/175) * 141.42 V = 565.68 V

Therefore, the rms voltage measured across the secondary coil is 565.68 V.

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Answer:

C

Explanation:

Because everything on Earth falls at the same speed, the masses of the balls do not matter. Since the acceleration due to gravity is constant, their speeds will both be increasing at the same rate, and therefore the difference in speeds would remain constant until they hit the ground. Hope this helps!

Answer:

Analyze the data collected and check to see if they support the hypothesis

Explanation: A. if they already have the raw data thaat means they have already conducted the experiment so it can not be the first option

B. once you collect the raw data you need to check if it corresponds to the data so it would have to be the 2 option.

Hopes this helps.

Answer: 1 Reaching for the Moon : the autobiography of NASA mathematician Katherine 2 Johnson by Katherine G Johnson( Book )

3 Katherine Johnson by Thea Feldman( Book )

4 Katherine Johnson by Ebony Wilkins( Book )

5Counting the stars by Lesa Cline-Ransome( Book )

6An Act to Award Congressional Gold Medals to Katherine Johnson and Dr.

Explanation:

Answer:

P = 7.61kW

Explanation:

In order to calculate the power delivered by the elevator motor, you take into account the work done by the elevator against the gravitational force.

The work done by the elevator is given by:

\(W_g=(F-Mg)h=Mah\)     (1)

F: force of the motor

M: mass of the elevator = 712 kg

g: gravitational force = 9.8 m/s^2

h: vertical distance traveled by the elevator

a: acceleration of the elevator

You calculate the acceleration a by using the following formula:

\(a=\frac{v}{t}=\frac{1.93m/s}{3.13s}=0.616\frac{m}{s^2}\)       (2)

With this values you can calculate F from (1)

\(F-Mg=Ma\\\\F=Ma+Mg=(712kg)(0.616+9.8)m/s^2=7416.19N\)     (3)

Furthermore, you have that the work is equal to the change in the kinetic energy:

\(Mah=\frac{1}{2}M(v^2-v_o^2)\)     (2)

v: final speed of the elevator = 1.93 m/s

vo: initial velocity = 0 m/s

From the equation (2) you can calculate the vertical distance h:

\(h=\frac{v^2}{2a}=\frac{(1.93m/s)^2}{2(0.616m/s^2)}=3.02m\)

Then, the work done by the elevator is

\(W_e=Fh=(7416.19N)(3.02m)=22422.53J\)

The quotient of the work We and time (3.13 s) is the power delivered by the motor:

\(P_e=\frac{W_e}{t}=\frac{22422.53J}{3.13s}=7613.74W\approx7.61kW\)

The power delivered by the elevator is 7.61kW

Answer:

A crane is a type of machine, generally equipped with a hoist rope, wire ropes or chains, and sheaves, that can be used both to lift and lower materials and to move them horizontally. It is mainly used for lifting heavy things and transporting them to other places.

Explanation:

Answer:

A crane

Explanation:

Cranes are used move heavy items

Elements are arranged on the periodic table in terms of valence electrons based on their atomic number and electron configuration.

1. Elements are arranged on the periodic table in terms of valence electrons based on their atomic number and electron configuration. The valence electrons are the outermost electrons in an atom's electron shell, and they are crucial in determining the chemical properties and reactivity of elements.

2. Evidence from data tables can be shown by examining the electron configuration and the group and period numbers of various elements on the periodic table. Here is a simplified example:

Element   | Electron Configuration | Group | Period |

--------------------------------------------

Hydrogen  | 1s^1                              | 1     | 1      |

Lithium       | [He] 2s^1                     | 1     | 2      |

Carbon       | [He] 2s^2 2p^2          | 14    | 2      |

Oxygen      | [He] 2s^2 2p^4          | 16    | 2      |

Neon          | [He] 2s^2 2p^6          | 18    | 2      |

--------------------------------------------

3. The evidence from the data table supports the claim that the arrangement of elements on the periodic table is based on valence electrons.

- Group Trend: Elements within the same group (vertical columns) share the same number of valence electrons. In the example table, Hydrogen, Lithium, and Neon are all in Group 1, indicating they have 1 valence electron.

- Period Trend: Elements within the same period (horizontal rows) have the same number of electron shells. In the example table, Hydrogen and Lithium are in Period 1, indicating they have their valence electron in the first energy level. Carbon, Oxygen, and Neon are in Period 2, indicating they have their valence electrons in the second energy level.

By examining the electron configurations, group numbers, and period numbers, we can clearly see the trends and patterns in the number of valence electrons for both groups and periods on the periodic table. This evidence supports the claim that the arrangement of elements on the periodic table is based on their valence electrons, which play a crucial role in determining their chemical behavior and properties.

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The waves are traveling at 3.75 m/s considering the distance between two crests to be 7.5 m.

Identify the known variables. In this problem, we have the time between two wave crests (2.0 s) and the distance between two crests (7.5 m).

Calculate the wave speed. To calculate the wave speed, we need to divide the distance between two crests by the time between them. This gives us the equation v = d/t.

Plugging in our known values, we get v = 7.5 m / 2.0 s = 3.75 m/s.

The waves are traveling at 3.75 m/s.

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Given :

The mass of the balloon was 1890 kg and had a volume of 11,430 m3 .

The balloon floats at a constant height of 6.25m above the ground.

To Find :

The density of the hot air in the balloon.

Solution :

We know,

Volume × ( Density of surrounding air - Density of hot air ) = mass

Putting given values in above equation, we get :

\(11430\times ( 1.29 - \rho_{hot \ air } ) = 1890\\\\\rho_{hot \ air } = 1.29 - \dfrac{1890}{11430}\\\\\rho_{hot \ air } = 1.125\ kg\ m^3\)

Therefore, the density of hot air in the balloon is 1.125 kg m³.

The car is moving at approximately 12.5 meters per second.

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

KE = 1/2 * m * \(v^2\)

where

KE = kinetic energy,

m =Mass of the object, and

v = velocity.

In this case, we are given the mass (m) of the car as 1600 kg and the kinetic energy (KE) as 125,000 J. To find the velocity .

Substituting the  values , we have:

125,000 J = 1/2 * 1600 kg *\(v^2\)

Now, we can solve for v by rearranging the equation:

\(v^2\) = (2 * 125,000 J) / 1600 kg

\(v^2\) = 156.25 \(m^2/s^2\)

Taking the square root, we find:

v = √156.25\(m^2/s^2\)

v ≈ 12.5 m/s

Therefore, the car is moving at approximately 12.5 meters per second.

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The acceleration of the object in the inclined plane is g sinθ.

The velocity of the object on the inclined plane is √(2gL sinθ).

Given that the inclined surface is a frictionless surface. So, the force of friction is zero. Hence the components of the weight of the object provides the necessary forces to slide the object over the inclined plane.

a) Newton's second law is applied to masses on inclination.

Acceleration due to multiplied by the sine of the angle of inclination provides the acceleration for a frictionless slope of angle in degrees.

The acceleration of the object in the inclined plane is,

a = g sinθ

b) Applying the third equation of motion,

v²- u² = 2as

v² = 2as

v² = 2 x g sinθ x L

Therefore, the velocity of the object on the inclined plane is given by,

v = √(2gL sinθ)

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The electron number cannot be used instead because electrons can be removed from or added to an atom (option C)

The element of an atom is determined by its proton count, while the electron count can exhibit variability. Take, for instance, a sodium atom, which encompasses 11 protons and 11 electrons. However, it has the capacity to relinquish one electron, transforming into a sodium ion housing only 10 electrons.

This occurs due to the relatively loose binding of electrons to the nucleus, enabling their removal through the influence of an electric field or alternative mechanisms.

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Goal posts at the end of football field are padded as a safety measure to players who might run into them,these thick paddings of the goal posts are done to prevent injuries to the players because the padding of the goal post increases the time of impact and this in-turn decreases the force on the the players body or the force it will have when a player's body hit against it and therefore decreasing the force applied to bring the player to a stop.

We can also say that it increases the time of collision between the player's body and the post.

Potential energy is a form of accumulated energy that an item or set of objects may have depending on their size, shape, location, or even substance.

Potential energy is the energy retained by an object as a result of its location relative to other objects, internal stresses, electric charge, or other variables. Although it has ties to the old Greek philosopher Aristotle's idea of potentiality, the word potential energy was coined by the 19th-century Scottish engineer and physicist William Rankine.

The gravitational potential energy of an object, the elastic potential energy of a stretched spring, and the electric potential energy of an electric charge in an electric field are all examples of common kinds of potential energy.

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Answer:

the red pointer on the magnet ( grey region) : points towards north

red pointer outside the magnet ( white region) is pointing towards south

Explanation:

please see the attached image

Answer:

C. the help our understanding of the formation of planetary bodies.

Explanation:

this is the answer of PLATO

Answer:

Explanation:

Let the initial rotational inertia be I and final rotational inertia be I / 6 .

Let the initial angular velocity be ω₁ and final angular velocity be ω₂.

Applying conservation of angular momentum law

I x ω₁ = I / 6 x ω₂

6 ω₁  = ω₂

initial rotational kinetic energy = 1/2 I x ω₁ ²

Final  rotational kinetic energy = 1/2 ( I / 6 ) x ω₂ ²

Final  rotational kinetic energy / initial rotational kinetic energy

= ( 1 / 6 ) x ω₂ ² / ω₁ ²

=  ω₂ ² / 6ω₁ ²

= 36 ω₁ ² / 6ω₁ ²

= 6 .

The ratio will be "6". A further solution is below.

Let,

The initial rotational inertia,

The final rotational inertia,

By applying the conservation of angular momentum law, we get

→ \(1\times \omega_1 = \frac{1}{6}\times \omega_2\)

→    \(6 \ \omega_1 = \omega_2\)

Now,

Initial rotational K.E = \(\frac{1}{2}1\times \omega_1^2\)

Final rotational K.E = \(\frac{1}{2} (\frac{1}{6} )\times \omega_2^2\)

hence,

→ \(\frac{Final \ rotational \ K.E}{Initial \ rotational \ K.E} = \frac{(\frac{1}{6} )\times \omega_2^2}{\omega_1^2}\)

                                  \(= \frac{\omega_2^2}{6 \omega_1^2}\)

                                  \(= 6\)

Thus the answer above is right.

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Answer:

consuming contaminated foods or beverages

Answer:

 θ = 35.7º

Explanation:

For this exercise we must use the law of Malus

          I = I₀ cos² θ

where the angle is between the two polarizers.

When the unpolarized light from the sun reaches the first polarizer, only the light polarized in the direction manages to be transmitted, which is why

          I₁ = I₀ /2

this light reaches the second polarizer

           I₂ = I₁ cos² θ

           I₂ = I₀/2    cos² θ

           cos² θ = 2 I₂ / Io

indicate that the transmitted light is 33% = 0.33 I₀

          cos² θ = 2 0.33

          cos θ = √0.66

          θ = cos⁻¹ 0.8124

          θ = 35.7º

Answer:

Birds and fish both have a backbone structure, which makes them structurally and functionally similar.

Explanation:

Answer:

41 I believe

Explanation:

Just trust me lol

The velocity of the car 1 can be seen from the calculation as 20 m/s West

A coordinate system or point of view used to observe motion is known as a frame of reference. It can be used as a guide when describing an object's position, speed, and acceleration. Different frames of reference may result in various motion observations.

The relative velocity is the velocity of an object or observer as observed from a particular frame of reference.

We can see that the velocity of the car 1 is;

45 m/s - 25 m/s

= 20 m/s West

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