The 88 sectors into which astronomers today divide the celestial sphere (the whole sky) are called:___.

Answer:0.25s

Explanation:

You kick a soccer ball,delivering an impulse of 23 m/s. If the force you exert on the ball lasts for 0.25s.

Speed of its center will be directly proportional to its angular velocity in the case of rolling without slipping

Rolling without slipping is a combination of translation and rotation where the point contact is instantaneously at rest.                                                                                                                                                                                                                                                                                                                                                                

When an object rolls without slipping on an inclined plane , then the velocity of the center of mass will be equal to angular velocity times radius that object.

Vo = angular velocity * radius

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Answer:it will take 10 hours

Explanation: The way we get this answer is if the boat travels 200 miles at 20 mph that means that every 20 miles the boat traveled an hour would pass. Using this we can see that 20 fits into 200, 10 times, meaning that the time it would take to travel would be 10 hours.

The time it will take to travel 200 miles is 10 seconds

The calculation can be done as follows

= 200/20

= 10 seconds

Hence the amount of time it will take the speed boat to travel 200 miles is 10 seconds

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The minimum acceleration required for Student B to climb up the rope and lift Student A off the floor is 5.76 m/s²

Explanation:

To find the minimum acceleration needed for Student B to lift Student A off the floor, we need to consider the forces acting on both students.

Step1. Calculate the gravitational force acting on each student:
- For Student A: F_A = m_A * g = 73 kg * 9.81 m/s² = 716.43 N
- For Student B: F_B = m_B * g = 46 kg * 9.81 m/s² = 451.26 N

Step2. To lift Student A off the floor, the force exerted by Student B should be greater than the gravitational force acting on Student A (F_B > F_A).

Let's denote the net force on Student B as F_net.

Step3. Calculate the net force needed to overcome the gravitational force acting on Student A:
- F_net = F_B - F_A = 716.43 N - 451.26 N = 265.17 N

Step4. Now, we can find the minimum acceleration for Student B by dividing the net force by their mass (a = F_net / m_B)- a = F_net / m_B = 265.17 N / 46 kg = 5.76 m/s²

Thus, the minimum acceleration required for Student B to climb up the rope and lift Student A off the floor is 5.76 m/s².

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Answer:

heat

Explanation:

Answer:

Stronger and harder than either of the pure metals

Explanation:

Answer:

11.3

Explanation:

Answer: yes

Explanation:

Answer:

Arsenic

Explanation:

Arsenic is in group 5 and period 4. Group numbers tell us the number of valence electron and period number tells us the number of shells in an element.

Answer:

Objetos que se encuentran en movimiento:

1) Un automóvil pasando por la calle.

2) Una crustácea que se acerca a mi casa.

3) Un avión volando en el cielo.

4) Un repartidor de comida desplazándose en una bicicleta.

5) Las aspas del ventilador en rotación.

6) Una hojarasca afuera de la casa.

7) La puerta de mi habitación abrirse.

8) Un mosquito entrando por la ventana.

9) Un metrónomo en movimiento.

10) Las hojas de mi cuaderno siendo agitadas por la brisa impulsada por el ventilador.

Objetos que se encuentran en reposo:

1) El semáforo de la esquina.

2) El automóvil de mi madre.

3) Las sillas del comedor.

4) Un jarrón de porcelana.

5) La nevera de la cocina.

6) La mesa de noche de mi habitación.

7) El automóvil de policía en la calle.

8) La impresora de memes.

9) El estante de libros.

10) El cesto de galletas.

Un objeto está en reposo si y solo si la posición de todos sus puntos no ha cambiado con respecto a la posición inicial en el tiempo. Los cambios de posición se manifiestan mediante tres formas:

(i) Traslación.

(ii) Rotación.

(iii) Deformación.

Explanation:

Objetos que se encuentran en movimiento:

1) Un automóvil pasando por la calle.

2) Una crustácea que se acerca a mi casa.

3) Un avión volando en el cielo.

4) Un repartidor de comida desplazándose en una bicicleta.

5) Las aspas del ventilador en rotación.

6) Una hojarasca afuera de la casa.

7) La puerta de mi habitación abrirse.

8) Un mosquito entrando por la ventana.

9) Un metrónomo en movimiento.

10) Las hojas de mi cuaderno siendo agitadas por la brisa impulsada por el ventilador.

Objetos que se encuentran en reposo:

1) El semáforo de la esquina.

2) El automóvil de mi madre.

3) Las sillas del comedor.

4) Un jarrón de porcelana.

5) La nevera de la cocina.

6) La mesa de noche de mi habitación.

7) El automóvil de policía en la calle.

8) La impresora de memes.

9) El estante de libros.

10) El cesto de galletas.

Un objeto está en reposo si y solo si la posición de todos sus puntos no ha cambiado con respecto a la posición inicial en el tiempo. Los cambios de posición se manifiestan mediante tres formas:

(i) Traslación.

(ii) Rotación.

(iii) Deformación.

Answer:

3.42 + 4 + 5.2 + 12= 24.62
So since we have 24.62 it will be 4 sig figs

Explanation:

It reduces bias if In a double-blind study, neither researchers nor the participants are aware of which interpretation method is being used, which patients are receiving the actual treatment, and which

The correct answer is C

taking in the source language, recognising the deep structural meaning, using a contextual/schema screen, formulating/practicing the target language utterance, and creating the interpretation.

An interpreter, as the name implies, converts high-level computer code into code that a machine can understand (machine code) or into a higher-level language that can be quickly executed. The interpreter reads every line of code before converting or directly executing it.

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The final velocity of the van after the collision is determined as 3.4 m/s.

The final velocity of the van can be determined by applying the principle of conservation of linear momentum as follows;

m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂

where;

500(5) + 400(2) = 500v₁ + 400(4)

3300 = 500v₁ + 1600

1700 = 500v₁

v₁ = 1700/500

v₁ = 3.4 m/s

Thus, the final velocity of the van after the collision is determined as 3.4 m/s.

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A star generates 81 times more energy per unit area in a certain amount of time than one with a surface temperature that is three times that of the sun.

The photosphere's thermal emission, which occurs at a temperature of 5700 K, is what gives the Sun's spectrum its smooth portion. Because their photospheres are hotter or colder than the Sun's, respectively, we perceive stars in the sky that are bluer or redder than the Sun.

But how big is the Sun in comparison to these stars? The Stefan-Boltzmann law, which also applies to other objects emitting thermal radiation, connects the size of a star to its temperature and luminosity.

This includes the burning metal burners in electric stoves and the filaments in light bulbs. The brightness L is inversely related to the star's surface area and the fourth power of its surface temperature, according to the law's mathematical formulation.

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Answer:

3.68x10-15 J

Explanation:

I hope this is the right answer sorry if im wrong

Answer:

KE = 1/2mv^2

KE = 1/2(24)(3^2)

KE = 12(9)

KE = 108 J

Let me know if this helps!

Answer:

Resultant force of the given forces: approximately \(11.2\; {\rm N}\) at approximately \(53^{\circ}\) west of south.

Explanation:

The resultant force of these forces will be:

Refer to the diagram attached. The resultant \(5\; {\rm N}\) force to the south and the \(10\; {\rm N}\) force to the west are perpendicular to each other, forming the two legs of a right triangle. The hypotenuse of this right triangle will be the net effect of these two forces.

Apply Pythagorean's Theorem on this triangle to find the magnitude of this net effect:

\(\begin{aligned}(\text{length of hypotenuse}) &= \sqrt{10^{2} + 5^{2}} \approx 11.2\end{aligned}\).

Hence, the magnitude of this net effect will be approximately \(11.2\; {\rm N}\).

Let \(\theta\) denote the angle between this resultant force and west. In this right triangle:

\(\begin{aligned} \tan(\theta) &= \frac{(\text{opposite})}{(\text{adjacent})} \\ &= \frac{5\; {\rm N}}{10\; {\rm N}} \\ &= \frac{1}{2}\end{aligned}\).

\(\begin{aligned} \theta &= \arctan\left(\frac{1}{2}\right) \approx 27^{\circ}\end{aligned}\).

Hence, the angle between this resultant force and south will be approximately \((90^{\circ} - 27^{\circ}) = 63^{\circ}\). This resultant force will be at approximately \(63^{\circ}\) west of south.

Answer:

7 m/s East

Explanation:

The speed of the man relative to the plane is given as 7 m/s. Given that he's walking in the corridor of the plane, this is his speed relative to the plane. Since he's moving to the back of the plane, and the aircraft is headed to west, the man's direction relative to the plane is East.

The electric field due to this charge distribution can be found by applying Gauss' law. The electric field at any point in space is the net sum of all the electric fields due to the individual charges.

Gauss' law states that the electric flux through any closed surface is equal to the charge enclosed by the surface divided by the permittivity of free space.

To calculate the electric field due to the charge distribution, the first step is to divide the quarter-circle into small segments. Each segment will have a charge q, and will be of width dx. The total charge in the quarter-circle is then given by the integral of q multiplied by dx from 0 to 2πa.

The electric field at any point P in the first quadrant is then given by the integral of q/4πε0 r2 multiplied by dx from 0 to 2πa, where r is the distance from the point P to the center of the quarter-circle. This gives the electric field at P to be:

E = (1/4πε0)∫ 0 to 2πa q/r2 dx

The electric field due to the charge distribution is therefore a function of the distance from the point P to the center of the quarter-circle, and is inversely proportional to the square of this distance.

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A satellite beams 12 kW microwave radiation at Earth's surface, 550 km away, with a circular diameter of 1500 m.

Microwave radiation is a form of electromagnetic radiation that has wavelengths ranging from one meter to one millimeter. This radiation is used by satellites to communicate with Earth and other spacecraft. In this scenario, the satellite is beaming 12 kW of microwave radiation towards Earth's surface, which is 550 km away. When the beam strikes the Earth, it forms a circular diameter of about 1500 m.

This is a result of the way the radiation spreads out as it travels through the atmosphere. The energy of the radiation is also affected by the distance it has to travel, so by the time it reaches the surface, it is less intense than when it left the satellite. Nevertheless, microwave radiation is still a powerful tool for communication and observation, and it plays a critical role in our modern world.

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Answer:

D

Explanation:

The table is NOT in motion, so it will remain still. Newton's second law states that for every action, there's an equal and opposite reaction. Therefore, the table must push back the opposite direction(up) with the same force(15N)

\(\lambda=v/c\lambda_0\)  is the wavelength λ of light in glass, if its wavelength in air is λ0 , its speed in air is c , and its speed in the glass is v.

Gamma rays have incredibly small wavelengths that are only a small percentage of the size of atoms, whereas other wavelengths can stretch as far as the universe since the relationship between wave frequency and wavelength is inverse. Although it isn't often stated explicitly, electromagnetic radiation's wavelengths are typically represented in terms of the vacuum wavelength, regardless of the medium they are traveling through.

Electromagnetic radiation's behavior is influenced by its wavelength. wavelength x frequency equals the speed of light. Energy equals Planck's constant times frequency. Wave number in cm equals 1/wavelength. A rough estimate of the wavelength size is shown along with the wavelengths of several regions of the electromagnetic spectrum.

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If a source of sound is traveling toward you, the speed of the sound waves reaching you is higher than the speed the sound waves would have had if the source were stationary.

The speed of sound waves in a medium is determined by the properties of the medium itself, such as its density and elasticity. In general, sound waves travel at a specific speed in a given medium, regardless of the motion of the source.

However, when the source of sound is in motion, there is an additional component to consider: the relative motion between the source and the observer. This relative motion affects the perceived frequency of the sound waves, known as the Doppler effect.

If the source of sound is moving towards the observer, the sound waves get compressed, resulting in a higher frequency and shorter wavelength. As a result, the speed of the sound waves relative to the observer appears higher than it would be if the source were stationary.

It's important to note that the actual speed of sound in the medium remains constant. It is the perceived speed or apparent speed of the sound waves reaching the observer that is affected by the motion of the source.

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Answer:

(b) Centripetal force acts along the radius of circular path

Explanation:

Centripetal force is a force experienced by a body moving in a circular path. It is expressed mathematically ad F = mv²/r

m is the mass of the body

v is the velocity

r is the radius of the circular path

When a body moves in a circular path, work dome is zero because Centripetal force acts along the radius of circular path and the force is at right angle with the motion of body.

Explanation:

uasjwwbwjwbwia GJ wkwkjwnwnwjwjjwjwd7beba s

Answer:

8 oz

Explanation:

Answer:

B

Explanation:

cause

Answer: A

Explanation:

The moon has less mass than Earth.

Just took the test.

Answer:

The shadow would be on your left side.

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If a 0.3% decrease in the price of a good causes its quantity supplied to decrease by 1%, then the supply is C. Inelastic.

In this scenario, the supply of the good is considered inelastic. The elasticity of supply measures the responsiveness of the quantity supplied to changes in price. When the price of a good decreases, and the quantity supplied decreases by a larger percentage, it indicates that the supply is relatively unresponsive to price changes.

To determine the elasticity of supply, we compare the percentage change in quantity supplied to the percentage change in price. In this case, a 0.3% decrease in price results in a 1% decrease in the quantity supplied. Since the percentage change in quantity supplied (1%) is greater than the percentage change in price (0.3%), the supply is considered inelastic.

Inelastic supply means that producers are less responsive to price changes, and a small change in price leads to a proportionally smaller change in quantity supplied. In such cases, producers may find it challenging to adjust their output levels quickly in response to price fluctuations.

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