Which of the following describes a planet?Burning ball of gases that emits its own light

Large body of rock that revolves around the sun

Large, round body that revolves around a star

Round object that revolves around a moon

Answer:

it is B. The Law of Conservation of Energy

Explanation:

hope this helps

Because the number of electrons and protons in a neutral atom is the same, this atom's charge is zero.

The number of electrons in a neutral atom is the same as the number of protons. In the case of this atom, there are 19 electrons and 20 protons, resulting in a charge of +1. This atom is a cation since it has more protons than electrons.The atomic number of an element is determined by the number of protons in its nucleus, and it is represented by the symbol Z. The total number of protons and neutrons in an atom's nucleus is called its mass number, and it is represented by the symbol A. The number of neutrons in an atom can be determined by subtracting the atomic number (Z) from the mass number (A).In this particular atom, there are 20 protons and 15 neutrons. The mass number is 20 + 15 = 35. The atomic number, on the other hand, is 20. As a result, this element is a neutral atom with 20 electrons.

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The vector u represents the sum of two orthogonal vectors, and which can be written as,

\(u=Proj_vu+(u-Proj_vu)\).

To find the answer, we have to know about the projection of vectors.

                               \(Proj_v u=\frac{u.v}{v.v} v\)  (inner product)

              \(u=(u_1,u_2)\\v=(v_1,v_2)\)    then, projection of u on v is,

                              \(Proj_vu=\frac{u_1v_1+u_2v_2}{v_1v_1+v_2v_2} (v_1,v_2)\)

                 \(u=Proj_vu+(u-Proj_vu)\)

Thus, we can conclude that, the vector u represents the sum of two

orthogonal vectors, and which can be written as,

\(u=Proj_vu+(u-Proj_vu)\).

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The induced emf near the solenoid's center has a magnitude of 0 V/m.

At a location 0.500 cm from the solenoid's axis, the induced electric field has an intensity of 8 x 105 V/m.

the settings provided;

The following formula is used to determine the size of the induced emf close to the solenoid's center:

B = 4π × 10⁻⁷ × 700 × 36

  = 0.032 T/s

E = r/2(dB/dt)

E = 0/2*(0.032)

E = 0 V/m

The following formula is used to determine the strength of the induced electric field at a position 0.500 cm from the solenoid's axis:

E = r/2(dB/dr)

E = {(0.5 * 10⁻²)/2}*(0.032)

E = 8 × 10⁻⁵ V/m

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The total work done by the object in the graph is 1,000 J.

The work done by the object is the area under the force - displacement graph.

The area of the curve will be determined from the following points;

The area of rectangle from 0 m to 5 m is calculated as;

A₁ = ( 40 N ) x ( 5 m ) = 200 J

The area of trapezium from 5 m to 10 m is calculated as;

A₂ = ¹/₂ ( 40 N + 80 N ) x ( 5 m )

A₂ = 300 J

The area of rectangle from 10 m to 15 m is calculated as;

A₃ = ( 80 N ) x ( 5 m )

A₃ = 400 J

The area of rectangle from 15 m to 20 m is calculated as;

A₄ = ( 20 N ) x ( 5 m )

A₄ = 100 J

The total work done by the object is calculated as;

W = 200 J + 300 J + 400 J + 100 J

W = 1,000 J

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Answer:

See below

Explanation:

RNA is single-stranded. It does leave the nucleus, unlike DNA. It still consists of strands, however, the ribose in the backbone of the strand is different than in DNA.

The nitrogenous bases are different in RNA; instead of Thymine, Adenine now pairs with Cytosine.

Stationary charged particles interact at a distance with their surroundings by the way of their electric fields.

We are aware that a magnetic field exists wherever current flows. This demonstrates that a magnetic field is present together with a flowing charge.

A stationary charge is a particle which produces only electric field in the surrounding space. If this charge moves, then it can produce magnetic field also.

It is unable to produce magnetic force fields, but it can interact with their environment at a distance via their electric fields. Magnets are unaffected by this electric field, which is caused by an imbalance in the electric charges. However, this might be expanded and felt in their surroundings in some way.

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Answer:

Six is the only number that is both the sum and the product of three consecutive positive numbers.

Explanation:

It is best to say that efficient plumbing reduces water pollution by using less water. Option a is correct.

Plumbing is a water conveyance system that transports water for a variety of uses. It transports water from one location to another via pipes, valves, and tubes.

It has the ability to transport water from a large reservoir to several areas. It is required for agricultural irrigation, domestic cleanliness, and the provision of potable drinking water.

Filters are often used in plumbing systems to remove pollutants from the water. An effective plumbing system lowers water pollution by using less water

Since it allows for adequate flow of water for usage and can automatically close or turn up as needed, preventing the loss of clean water and therefore preventing pollution.

It guarantees that clean water is used in a sustainable manner. efficient plumbing reduces water pollution by using less water.

Hence option a is correct.

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Answer:

B

Explanation:

Answer:

A) v₁ = 5.66 [m/s]

Explanation:

To solve this problem we must use the definition of linear momentum conservation, which tells us that momentum is conservation before and after a collision.

The linear momentum is equal to the mass by the product of the Velocity.

P = m*v

where:

P = lineal momentum [kg*m/s]

m = mass [kg]

v = velocity [m/s]

Now, to the right side of the equal sign will take the linear momentum before the collision and to the left side of the equal sign as after the collision.

Pbefore = Pafter

(m₁*v₁) - (m₂*v₂) = (m₁*v₃) + (m₂*v₄)

where:

m₁ = mass of the car = 1450 [kg]

v₁ = velocity of the car before the collision [m/s]

m₂ = mass of the shopping cart = 60 [kg]

v₂ = velocity of the shopping cart before the collision = -1.2 [m/s]

v₃ = velocity of the car after the collision = 5.13 [m/s]

v₄ = velocity of the shopping cart after the collision = 11.75 [m/s]

Now replacing:

(1450*v₁) - (60*1.2) = (1450*5.13) + (60*11.75)

1450*v₁ - 72 = 7438.5 + 705

1450*v₁  = 7438.5 + 705 + 72

1450*v₁ = 8215.5

v₁ = 5.66 [m/s]

Answer:

5.67 m/s

Just did it.

The maximum current from the battery is 0.096 A, or 96 mA (milliamperes).

The maximum power of the TENS machine is given as 240 mW, and the potential difference across the battery is 2.5 V. To calculate the maximum current from the battery, we can use the formula:

P = IV

where P is the power, I is the current, and V is the potential difference.

Substituting the given values, we get:

240 mW = I * 2.5 V

We need to convert the power from milliwatts (mW) to watts (W), which is done by dividing by 1000:

240 mW / 1000 = 0.24 W

Substituting this value and simplifying the equation, we get:

0.24 W = I * 2.5 V

I = 0.24 W / 2.5 V

I = 0.096 A

Therefore, the maximum current from the battery is 0.096 A, or 96 mA (milliamperes). This calculation is important for understanding the electrical characteristics of the TENS machine, which is a device commonly used for pain relief by applying electrical stimulation to the body.

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Use Newton's second law.

The object's mass is the same everywhere, so first compute the mass using the object's weight on Earth:

F = ma   ⇒   59 N = m (9.8 N/kg)   ⇒   m ≈ 6.02041 kg

Now compute the acceleration on the other planet:

F = ma   ⇒   40.5 N ≈ (6.02041 kg) a

⇒   a ≈ 6.72712 m/s² ≈ 6.7 m/s² ≈ 1.5g

where g = 9.8 m/s², just to express this acceleration relative to the gravitational acceleration at Earth's surface.

Answer:

the orbital speed of umbriel is 16,800 km/h

Explanation:

The computation of the orbital speed is shown below

According to the question the Data provided in the question

Uranus mass = 8.68 × 10^25 kg

Distance = 2.66 × 10^8 m

Based on the above information, the orbital speed of Umbriel is

\(V = \sqrt{\frac{GM}{R} } \\\\ = \sqrt{\frac{((6.673e-11)(8.68e25)}{2.66e8} }\)

V = 4666 m/s

= 16,800 km/h

Hence, the orbital speed of umbriel is 16,800 km/h

Therefore it can be calculated by applying the above formula

Answer: 4665

Explanation: I got it right after on acellus

Power sources that are connected in parallel should have the same voltage output. This statement is true.

What does it mean when we say two power sources are connected in parallel?  Power sources are connected in parallel to increase the current output. This means that the positive terminals of the power sources are connected to the other positive terminals, and the negative terminals of the power sources are connected to the other negative terminals. This results in the voltage output remaining the same, but the current output increasing. This is useful when more current is required for a particular application. To summarize, when power sources are connected in parallel, the voltage output should remain the same, and the current output should increase.

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Answer:

1.05kg

Explanation:

Soln

Kinetic energy = 475 J

Velocity = 30.0m/s

mass = ?

Recall,

Kinetic energy = 1/2 × mass × (velocity)²

K.E = 1/2 × m × v²

475 = 1/2 × m × (30)²

475 = 1/2 × m × 900

475 = m × 450

divide both sides by 450

475/450 = m

m = 475/450

m = 1.05kg

Answer:

2. increase

3. stay the same

4. Decrease

Explanation:

(let me know if im wrong on any we learned this last year so I might be a little rusty on this subject)

The force of gravity increases with increase in the size of the Sun and with decrease in the distance between the earth and the Sun. However, it decreases with decrease in the size of the earth.

Gravity is the force of attraction that exists between two bodies separated by a given distance.

The force of gravity increases with increase in the size of the bodies as well as with a decrease in the distance of separation.

However, the force of gravity decreases with decrease in the size of the bodies as well as with a increase in the distance of separation.

Thus, for the force of gravity between the earth and the Sun;

Therefore, the force of gravity is affected by size of the bodies as well as the distance separating the bodies.

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Answer:

it A.

Explanation:

did the test on Edmentum and got it right

The total translational kinetic energy of 1.6 mol of N₂ molecules at 27°C is calculated as 9673 J as pern the Kinetic energy formula with Boltzmann Constant.

Remember that the mass of the item multiplied by the square of its linear velocity (around its center of mass) yields translational kinetic energy, which is then divided by two.

The energy of motion of a body is equivalent to the work it would perform if it were brought to rest, according to general physics.

For a rigid body with constant mass, the translational kinetic energy is dependent on motion through space and is calculated as the product of the square of the speed and the product of the mass divided by half.

N2 is an adiatomic molecule

Total translational Kinetic energy of adiatomic gas

E = 5/2 NKT

1 mol = 6.022 x \(10^{23}\)

1.6 mol = 1.6 x (6.022 x \(10^{23}\))

= 9.635 x \(10^{23}\)

Boltzmann constant K = 1.38 x \(10^{-23}\) J/K

Temperature = 18° C

= (18 + 273) K

= 291 K

Putting the values,

E = 5/2 x (9.635 x \(10^{23}\) ) x (1.38 x \(10^{23}\)) x 291 K

= 9673 J

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Answer:

Explanation:

A body is said to be in uniform acceleration if change in velocity with respect to time is the same in equal time interval .

A body is said to be in non uniform acceleration if change in velocity with respect to time is not the same in equal time interval.

Answer:

B

endothermic: heat taking in

exothermic: heat given out

Answer:

I thin that the answer is d because the energy goes high and then it goes down a bit

Explanation:

Solution :

It is given that JeLysa Hanson went for a medical examination complaining shortness of breath and tightness in her chest. After the medical examination, she was diagnosed of a musculoskeletal pain that was due to the overexertion while practicing her new hobby of boxing.

Therefore the codes of her examinations are :

ICD Code :

\($R06.02$\) = shortness of breath

\($R07.89$\) = chest pain or chest tightness

\($M79.1$\) = musculoskeletal pain

\($X50.3XXS$\) = overexertion due to the repetitive body movement

Answer:

50 km/h

Explanation:

100km/2hours = 50 km/h

The law of conservation of energy

Energy cannot be created or destroyed, but it can be changed from one form to another.

KE + PE = constant

The kangaroo's horizontal speed will be 9.7 m/s and its departure speed will indeed be 10.65 m/s.

By observing the pace at which this compressed region moves through the medium, we may determine the sound speed. The sound wave travels at a speed of around 343 meters per second in low humidity at 20 degrees Celsius.

The following equation relates the distance to the direction and initial velocity:

d = [v₀²sin2θ]/g, where θ – the angle of the jump.

Thus, v₀² = gd / (sin2θ) = (9.8×8)/0.69 = 113.62

v₀ = 10.65 m/s ( the take off speed).

The horizontal velocity equals:

vₓ = v₀cos 22° = 10.65 m/s × 0.92 = 9.7 m/s

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1.3 m/s is the average speed of runner. Option D is the correct answer.

The total distance covered by the runner in one lap is equal to the distance around the two semicircles plus the distance along the two parallel lines. The distance around one semicircle is πr = π(49 m) and since there are two semicircles, the total distance around the semicircles is 2π(49 m). The distance along each parallel line is 96 m, and since there are two parallel lines, the total distance along the parallel lines is 2(96 m). Therefore, the total distance covered by the runner in one lap is:

Total distance = 2π(49 m) + 2(96 m) = 2π(49 m + 48 m) = 2π(97 m)

The time taken by the runner to complete one lap is given as 100 seconds. Therefore, her average speed is:

Average speed = Total distance / Time taken = [2π(97 m)] / (100 s) = 1.93 m/s

Rounding to two significant figures, the average speed of the runner is 1.9 m/s, which corresponds to option (D) 1.3 m/s.

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Thermodynamics can be said to be a branch of Physics which involves the transfer of heat and other energy forms.

Thermal energy is the energy possesed by a system due to its temperature.

In thermodynamics, during the transfer of thermal energy, energy is wasted due to entryopy. And entropy is the measure of disorder of a system.

Therefore, in amy thermodynamic system that deals with the transfer of thermal energy, the most ideal state for that system is Entropy

ANSWER:

A. Entropy