When the distance between two objects doubles, what happens to the gravitational attraction between these two objects?

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MAGNETIZATION

Answer:

distance = 120km

Explanation:

speed = 40km/hr

time = 3 hours

distance = ?

speed = distance/time

distance = speed × time ( making distance the subject)

distance = 40km/hr × 3 hrs

distance = 120km

Answer:

The radius of the circle made by the person on the merry go round is 74.55 meters

Explanation:

The given parameters are;

The force the merry go round exerts on the rider = 1000 N

The time it takes the merry go round to make one complete revolution = 15 seconds

The weight of the person = 750 N

The radius of the circle made by the person on the merry go round = r

We have;

\(F_c = \dfrac{m \cdot v^2}{r} = m \cdot \omega ^2 \cdot r\)

Where;

m = The mass of the person

v = The velocity of the person

\(F_c\) = The centrifugal force acting on the person = 1,000 N

r = The radius of the circle made by the person on the merry go round

ω = Angular velocity = 2·π/15 rad/s

We have;

The mass of the person = The weight/(The acceleration due to gravity, g)

∴ The mass of the person = 750/9.81 ≈ 76.45 kg

By substituting the calculated and known values into the equation for  the centripetal force, we have;

\(F_c\) = m × ω² × r

1000 = 76.45 × (2·π/15)² × r

r = 1000/(76.45 × (2·π/15)²) = 74.55 m

The radius of the circle made by the person on the merry go round = r = 74.55 m.

Do = 2f means that object distance is 2 x focal length.

2 x focal length = radius of curvature

When an object is placed at the radius of curvature, a real, inverted image is formed at the other radius of curvature. The sizes of the image and the object are the same. The sketch is shown below

Answer:

R=60Ω

Explanation:

You are looking for the total resistance of a parallel circuit so the formula is

R=R1+R2+R3, where R1=10Ω, R2=20Ωand R3=30Ω

R=10Ω+20Ω+30Ω

R=60Ω

Answer:

3,13 N

Explanation:

Del enunciado de la segunda ley del movimiento de Newton;

F = ma

Dónde;

F = Fuerza aplicada

m = masa del cuerpo

a = aceleración del cuerpo

Sustitución de valores;

F = 5,9 kg * 0,53 m / seg2 = 3,13 N

Por tanto, la fuerza aplicada es 3,13 N

The speed is constant and the direction of motion changes.

Thus, the car maintains a constant speed and it does not maintain a constant velocity - the instantaneous speed varies as it goes around the corner due to the change in direction of motion.

When a car rounds a corner at a steady speed, it changes its direction of motion, and therefore, its velocity changes as well. Velocity is a vector quantity that takes into account both the speed and direction of an object's motion. Since the direction changes, the velocity changes as well. However, if the car maintains the same speed throughout the turn, then the speed remains constant. Speed is a scalar quantity that only takes into account the magnitude of an object's motion, and it is measured as the distance traveled per unit of time.

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Answer:

C. Volume

Explanation:

it displaces an equal amount of water to the amount of space it occupies.

Answer: i don't know

Explanation: still

Answer:

The answer is 22.14 meters per second

Explanation:

I gotchu brother

An organ pipe that can resonate at 294 Hz, 490 Hz, and 686 Hz but not at any other frequencies is a closed pipe. The fundamental frequency of the said pipe is 294 Hz.

Here is a detailed analysis of the pipe and its fundamental frequency:

Part A: To determine if the organ pipe is open or closed, let's look at the pattern of the given frequencies. Closed pipes resonate at odd multiples of the fundamental frequency, while open pipes resonate at all multiples of the fundamental frequency.

In this case, the frequency pattern is 294 Hz, 490 Hz, and 686 Hz. The ratio between the successive frequencies is:
490 Hz / 294 Hz ≈ 1.67
686 Hz / 490 Hz ≈ 1.4

Since these ratios are close to 3/2 and 5/3, we can assume that these frequencies are odd multiples of the fundamental frequency. Therefore, it is a closed pipe.

Part B: To find the fundamental frequency of the closed pipe, divide the lowest given frequency by its corresponding harmonic number, which in this case is the first odd harmonic (n=1):
Fundamental frequency = 294 Hz / 1 = 294 Hz

So, the fundamental frequency of this closed pipe is 294 Hz.

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The wave having a wavelength of 50 m and traveling through water that is 30 m deep would be a deep water wave.

According to the definition, a deep water wave is a wave that occurs at water depths that is more than half the wavelength of the wave.

In the given case, the wavelength of the wave is 50 m and the depth of the water is 30 m which is more than half of the wavelength of the wave which is 25 m. Thus, the depth of the water is more than half of the wavelength of the wave. This makes the wave a deep water wave.

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Answer:

See below

Explanation:

Filling in the definitions:

acceleration

vector quantity

deceleration

time

slope

zero

positive

The lower solubility of Mg (OH)2 compared to Ca (OH)2 makes it difficult to determine the Ksp value in a similar experiment.

In the context of determining the Ksp value through titration, the solubility of a salt plays a crucial role. The Ksp value represents the equilibrium constant for the dissolution of a sparingly soluble salt in water. It is determined by measuring the concentration of the dissolved ions at equilibrium. In the given experiment, Ca(OH)2 was used, which has a higher solubility compared to Mg(OH)2. The solubility of a compound is the maximum amount of solute that can dissolve in a given solvent under specific conditions. Since the solubility of Mg(OH)2 is lower than that of Ca(OH)2, it means that fewer Mg2+ and OH- ions will be present in the solution for a given concentration. As a result, the equilibrium concentration of the ions in the solution will be significantly lower, making it challenging to accurately determine the Ksp value through titration. The lower solubility of Mg(OH)2 affects the endpoint of the titration. The endpoint is the point at which the indicator changes color, indicating the completion of the reaction. With Mg(OH)2, the endpoint may not be clearly observed due to the lower concentration of ions in the solution, leading to difficulties in accurately determining the Ksp value. Therefore, the lower solubility of Mg(OH)2 compared to Ca(OH)2 makes it challenging to decide the Ksp value in a similar experiment.

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The average velocity is given by

Where d is the distance covered and t is the time taken.

For the given case, we have

d = 75 m

t = 8.9 s

Therefore, the average speed of the hockey player is 8.43 m/s

The hockey player is moving at a speed of 9.5 m/s.

The ball is at its lowest point, which means that the tension in the string is greater than the ball's weight.

Tension is defined as the force in a stretched object that is pulling against the force that is causing the stretch. The magnitude of the force that is pulling on an object is the tension in the object.

The tension in a string is the force that is pulling on the string. When the string is pulled, the tension increases. The tension in a string depends on the force that is pulling on the string.

The weight of the ball is the force that is pulling on the string. When the ball is at its lowest point, the tension in the string is greater than the ball's weight.

This is because the force of gravity pulling down on the ball is greater than the tension in the string which is causing the ball to move up.

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The correct statement about electromagnetic radiation is Frequency is directly proportional to wavelength. Electromagnetic radiation is a type of radiation that is present in the electromagnetic spectrum. It is a form of energy that is carried by waves and comprises both electric and magnetic fields.

Electromagnetic radiation includes light, radio waves, microwaves, x-rays, and other types of waves. The energy and frequency of electromagnetic radiation determine its properties and effects on matter. The true statement about electromagnetic radiation is Frequency is directly proportional to wavelength.

The frequency of electromagnetic radiation is inversely proportional to its wavelength. This means that the shorter the wavelength of electromagnetic radiation, the higher its frequency, and vice versa.

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Given

The concept of inertia forms the basis for Newton's Third Law of Motion

To find

The given statement is true or false

Explanation

The third law of motion states that every action has a equal and opposite reaction

Inertia is the property by virtue of which an object at rest tends to be at rest and object at motion tends to be at motion

Thus both the concept are not similar

Conclusion

The given statement is false

Answer:

I think milligram is the correct answer.

Answer:

D. milliliter

Explanation:

Took it on usatestprep

Answer:

400m

Explanation:

From Newton's law of motion;

S = ut + 1/2 at2

Where U is initial velocity

a is acceleration

t is velocity hence;

S is distance covered

S = 20×10 + 1/2 × 4×(10)^2

= 200 + 200 = 400m

Answer:

The mission will help scientists investigate how planets formed and how life began, as well as improve our understanding of asteroids that could impact Earth.

Explanation:

Hope this helps :)

Answer:

1.5024

Explanation:

Draw a diagram. Put the two cells in series. Now draw 3 resistors. Two of them equal 0.26 ohms each. The third one is the lightbulb which is 12 ohms.

R = 0.26 + 0.26 + 12 = 12.52

The bulb has a voltage of 2.88 volts across it. You can get the current from that.

i = E / R

i = 2.88 / 12 =

i = 0.24 amps.

Now you can get the voltage drop across the two cells.

E = ?

R = 0.26

i = 0.24 amps

E = 0.26 * 0.24

E = 0. 0624

Finally divide the 2.88 by 2 to get 1.44

Each cell has an emf of 1.44 + 0.0624 = 1.5024

The correct answer is c. friction loss develops much slower than change in velocity.

The second principle of friction loss states that as the velocity of a fluid increases, the friction loss within the system increases, but at a much slower rate compared to the change in velocity. In other words, the increase in friction loss is not directly proportional to the change in velocity. This principle is based on the fact that as the fluid moves faster, the pressure drop due to friction along the pipe walls increases, resulting in some energy loss. However, this energy loss is not as significant as the increase in velocity itself. Therefore, the friction loss develops much slower compared to the change in velocity.

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Answer:

50.37 m/s and 40ms object

Because infrared light extracts energy from the paint whereas desk lamp light does not.

Energy's "ability to accomplish labor" refers to its ability to exert a force that moves an item. Despite the vagueness of the phrase, energy actually refers to the force which moves objects. The two types of energy are energy and potential energy.

Nearly majority of the world's energy is produced by steam turbines using carbon fuels, nuclear energy, biofuels, thermal, etc solar thermal energy. Solar photovoltaics, wind turbines, water turbines, gas turbines, and other important electricity generation technologies.

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Answer:f^n=m(a+g)

Explanation:khan academy said

Poisson's Ratio is the property of the material c. can be calculated as V where a is the applied load direction and t is the transverse direction.

One of the crucial material properties to employ in determining a material's brittleness or ductility, contractibility or expandability, is the Poisson's ratio, which is defined as the negative of the ratio of the transverse strain to the axial strain for a uniaxial stress condition.

The Poisson ratio (v) The material's deformation in a direction perpendicular to the direction of the applied force is measured by Poisson's ratio. In essence, Poisson's ratio is a crucial rock characteristic associated with closure stress and one way to gauge a rock's strength.

Hence option c is correct.

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The essential temperature at which the air becomes saturated with water vapour and dew, frost, or condensation begins to develop is known as the dew point.

It designates the precise instant when the air can retain no more moisture before condensation happens. The air's ability to hold water vapour drops over the dew point, causing the extra moisture to change from a gaseous to a liquid state.

This transition can be seen as frost on colder objects or as water drops on surfaces like grass or windows. Scientists and meteorologists can learn a lot about the dew point, atmospheric moisture, and the likelihood of precipitation or fog production.

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The balanced equation for the reaction between ammonium sulfate (NH₄)₂SO₄ and barium hydroxide Ba(OH)₂, forming ammonium hydroxide NH₄OH and barium sulfate BaSO₄, is:

(NH₄)₂SO₄ + Ba(OH)₂ -> 2NH₄OH + BaSO₄

This equation forms barium hydroxide and ammonium sulphate. The balanced equation coefficients show the reactant-product stoichiometry.

The equation demonstrates that 1 mole of ammonium sulphate and 1 mole of barium hydroxide yield 2 moles of each. This balanced equation ensures mass conservation by having the same number of atoms of each element on both sides.

Balancing the equation clarifies the chemical reaction's reactants and products. It improves reaction stoichiometry and quantity calculations.

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Answer:

the sand will heat up faster than the water

Explanation:

water has slow heat conduction

and sand had high heat conduction