what is the gpe of the ball at position a (20-m high)

By applying the correspondent change of scale, we will see that Earth should be placed 214.8m away from the scale sun.

The real radius of the Sun is:

R = 696,340 km

And the radius of the scale Sun is 1m, then we have the relation:

1m = 696,340 km

1 = (1m/696,340 km)

Now, the real distance between the Sun and Earth is:

d = 149,600,000 km

If we apply the change of scale we have above, we will get:

d =  149,600,000 km*(1m/696,340 km) = 214.8m

So the Earth should be placed at 214.8m of the ball that represents the sun.

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Answer:

a

that extreme force is gravity changing the moshon

Answer:

the total resistance: 20 ohms

the resistance of the speaker: 16 ohms

the voltage across the speaker: 9.6V

Answer:

8 km/hr

Explanation:

Acceleration

=Change in Velocity/ Time

=(24-0)/3

=8

The acceleration of the body is {a} = 8 km/hr².

Acceleration is defined as the rate of change of velocity per unit time.

Given is -

Initial velocity : 0 km/hr

Final velocity : 24km/hr

Time : 3s

We can write the acceleration as -

a = Δv/Δt

a = (24 - 0)/(3 - 0)

a = 24/3

a = 8 km/hr²

Therefore, the acceleration of the body is {a} = 8 km/hr².

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The probability that a randomly chosen nucleus in a radioactive sample will have decayed in a given time is  96.875%. The sample has experienced 5 half lives. The correct option is A.

Half life is the time required for the heavy nucleus or any radioactive material to disintegrate by half its quantity.

After one half life, the probability of decay of any nucleus is given by 50%. = 0.5

After two half lives gone,  probability of decay is 0.5 + 1/2(0.5) = 0.75

After, three half lives gone,  probability of decay is 0.5 + 1/2(0.5) + (1/2)²(0.5) = 0.875

After, four half lives gone,  probability of decay is 0.5 + 1/2(0.5) = 0.875 + (1/2)³(0.5) = 0.9375.

After, five half lives gone,  probability of decay is 0.9375 + (1/2)⁴(0.5) = 0.96875.

Thus, the sample has experienced 5 half lives. The correct option is A.\

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Answer:

weight = 30000 Newton

Given:

========================

[tex]\sf pressure \ (Pa)=\dfrac{force \ (N)}{area \ (m^2)}[/tex]

[tex]\dashrightarrow \sf \ 60 000 = \dfrac{force}{0.5}[/tex]

[tex]\dashrightarrow \sf \ force =60 000 *0.5[/tex]

[tex]\dashrightarrow \sf \ force =30000 \ N[/tex]

========================

Weight is the force due to gravity.

Thus, force = gravity = 30000 N

Answer:

the Mesosphere

Most meteors burn up in the mesosphere. Unlike the stratosphere, temperatures once again grow colder as you rise up through the mesosphere.

Explanation:

Have a nice day

Answer:

The Mesosphere

Explanation:

It is the coldest layer.

[tex]\qquad\qquad\huge\underline{{\sf Answer}}[/tex]

What Daryl said is correct and the relationship among them is a causation than a correlation, because we know that high pitched sound wave has more frequency than that of low pitched sound wave. and we also know that if the medium is same then velocity of wave is same* so if there is high pitched sound wave, it has shorter wavelength and if there's low pitched sound wave it has longer wavelength. since there's an inverse relationship between wavelength and frequency.

I hope it was easy to understand, let me know if you have doubts ~

Answer:

Laterite would be your answer.

Explanation:

I hope this helps!

Laterite is the type of soil is found in warm, humid climates.

Laterite is rich in iron and aluminum soil and rock type that is thought to have originated in hot, humid tropical climates. Nearly all laterites are of rusty-red hue, because of significant iron oxide concentration.

They form as a result of intense and extended erosion of the underneath rock material, which occurs most often when there are high temperatures and significant rainfall, with alternate wet and dry intervals.

Tropical weather is a long-term chemical weathering process that results in a wide range of soil thickness. Laterite is the type of soil is found in warm, humid climates.

Hence laterite is the correct option.

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Answer:

200 Nm

Explanation:

Work Done by Particular Force = Particular Force × Distance

Answer:

April

Explanation:

The distance between the sun and a planet can be gotten by measuring its orbital period and applying the Kepler's law.

According to Keplers third law; the cube of the distance between a planet and the sun is directly proportional to the square of the period of the same planet.

Having said that, we know that we can best measure the distance between the sun and a planet by measuring its orbital period and applying the Kepler's law.

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The statement that is true for both solar energy and wind energy is that power generation using this energy source does not contribute to water pollution.

Solar energy is the energy in the form of electromagnetic radiation emitted from the Sun while wind energy is the energy generated from from moving currents of the wind using wind turbines.

Solar and wind energies are both renewable sources of energy i.e. they cannot be exhausted.

However, the generation of power from both solar and wind sources does not pollute water.

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Answer:

100,000 / 800,000 = 1 / 8    amount of sample after 12 hours

(1/2)^n = 1 / 8      after n half-lives 1/8 of sample will be left

n = 3

(D) is the correct answer - 1/2 half-life = 4 hours

Answer:

F = M a = kg * m/s^2

1 N = 1 kg * m/s^2

(B) is correct

Answer:

A

Explanation:

Hope this helps! Please let me know if you need more help or think my answer is incorrect. Brainliest would be MUCH appreciated. Also remember to rate answers to help other students, While leaving thanks to answers that help you. Have a great day!

Answer:

I think it's because the refractive index of that medium is constant

Answer:

In the scientific method first of all is you need to identify the problem, the problem to your question is why does the dog circle its bed before lying down. Second is the observation to gather some data, you need to observe the dog if what could be the possibility the the dog may do that action. The third is the per hypothesis, you need to came up with an idea why does the dog do such and action for example the needs to find a correct spot to make itself comfortable and lastly the hypothesis, this should answer to your question or your problem. So my hypothesis is that dogs are one of the animals that are those difficult to find a place to sleep and some of that kind of animals are cat, before they lay on their bed, they have to circle to find a spot that could fit its body to be more comfortable when the dog sleep

Explanation:

Hope that helps you with your question.

(a) The acceleration of the salt shaker is 1.18 m/s².

(b) The distance traveled by the baseball player before coming to rest is 204.1 m.

The acceleration of the salt shaker at the given coefficient of kinetic friction is determined as follows;

a = μg

a = 0.12 x 9.8

a = 1.18 m/s²

Acceleration of the baseball player is calculated as follows;

a = μg

a = 0.4 x 9.8

a = 3.92 m/s²

The distance traveled by the baseball player before coming to rest is calculated as follows;

v² = u² - 2as

0 = 40² - 2(3.92)s

0 = 1600 - 7.84s

7.84s = 1600

s = 204.1 m

The complete question is below:

A baseball player slides into third base with an initial speed of 40 m/s. If the coefficient of kinetic friction between the player and the ground is 0.40, how far does the player slide before coming to rest?

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Answer:

D.

Explanation:

The answer should be D. frequency and intensity for the wave model; frequency only for the particle model.

I hope it helps! Have a great day!

Anygays-

The parameter will be frequency and intensity for the wave model and the frequency only for the particle model.

When a medium receives electromagnetic radiation, electrostatically charged particles are emitted from or inside it.

The emission of ions from a steel plate when light falls on it is a common definition of the effect. The substance could be a solid, liquid, or gas; and the released particles could be protons or electrons.

The above effect is the photoelectric effect. Frequency and intensity for the wave model; frequency only for the particle model.

Hence option D is correct.

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Blood travels through the body in tubes called arteries and veins.

Blood vessels are tubes through which the blood circulates in the body. Blood vessels include the following;

Thus, we can conclude that blood travels through the body in tubes called arteries and veins.

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For an erect object is 50 cm from a concave mirror of radius 60 cm. In the situation above, the object is moved to a new position, the new object distance is mathematically given as

u = -18cm

Generally, the equation for magnification is mathematically given as

1/f = 1/v +1/u

therefore,

-1/30 = 1/v + 1/u

v = -2.5u

Hence,

-1/30 = -1/2.5u + 1/u

-1/30 = (3/5)u

u = -18

In conclusion, the new object distance is

u = -18cm

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These brown dwarfs can be distinguished from other star-like objects because they exhibit absorption lines from the ammonia molecule in the spectra.

Brown dwarfs are star-like (small) objects in the external space that exhibit very low cold temperatures.

Brown dwarfs are not only small stars but also huge gaseous planets such as Saturn and Jupiter.

In consequence, brown dwarfs are a wide category that includes both planets and star-like objects.

Learn more about brown dwarfs here:

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Answer: The answer is C.

Explanation: C is the correct answer. The magnitude of the vector increases with the length of the line. Consider a compass when it comes to direction.

In classical mechanics, kinetic energy (KE) is equal to half of an object's mass (1/2*m) multiplied by the velocity squared. For example, if a an object with a mass of 10 kg (m = 10 kg) is moving at a velocity of 5 meters per second (v = 5 m/s), the kinetic energy is equal to 125 Joules, or (1/2 * 10 kg) * 5 m/s2

Answer:

7.5 sec

Explanation:

400 • t = 3000

(the 300 kJ was turned into 3000 J)

divide both sides by 400

400t/400 = 3000/400 ——-> 7.5

The answer becomes 7.5 sec

I hope it helps! Have a great day!

Anygays-