Show that the square of the period of revolution of a satellite is directly proportional to the cube of the orbital radius

Answer:

c because

Explanation:

Plants and trees couldn't thrive without capillary action. Capillary action helps bring water up into the roots. With the help of adhesion and cohesion, water can work it's way all the way up to the branches and leaves.

Answer:

option C

Explanation:

So option C is correct

The two factors that may affect the forces exerted by the pieces of tape are  the charge on the tape and distance between them.

The effect of one of the factors could be tested by altering the distance and calculating the forces between them.

A force is the push or pull which make a body to move or stop it.

a. When two objects are kept apart. they are always attracted when uncharged kept at any distance.

When the objects are charged, the force will be attractive or repulsive.

The distance between those charged objects increase or decrease in strength depending on the distance between them.

Thus, the two factors that may affect the forces exerted by the pieces of tape are the magnitude of charge on the tape and distance between them.

b. By increasing the distance between the tapes, we can find the strength of forces.

Learn more about force.

https://brainly.com/question/13191643

#SPJ1

Explanation:

It is due to cohesion (option C)

Answer:

a is the correct answer

from the formula of wave length=v/f

therefore f= v/wave length

these implies f= 345/4.15 = 83.1hertz

The three principal sources of internal heat of terrestrial planets accretion and radioactivity. Option A is correct.

The term "heat transfer" refers to the movement of heat. The flow of heat across a system's boundary is due to a temperature differential between the system and its surroundings.

The three principal sources of internal heat of terrestrial planets accretion and radioactivity.

Option A is correct.

To learn more about the heat transfer refer to the link;

https://brainly.com/question/13433948

#SPJ1

The true statements about magnetic fields and forces will be A,D and E.

An iron piece,alloy, or other substance with its constituent atoms arranged in such a way that it shows magnetism qualities,

The function of the magnet is attracting other iron-containing objects or aligning itself in a magnetic field.

There are two poles of the magnet;

1. North Pole.

2. South Pole.

The same poles repel each other, while the opposite poles attract each other. In a sense, south-south and north-north repel. While the north-south and the south-north attract each other.

The correct statements are;

(A). The north pole attracts the south pole of a magnet.

(D)Forces caused by magnetic fields are weaker farther from the magnet.

(E)Magnetic forces can act on an object even if the object isn't touching the magnet.

Hence, the true statements about magnetic fields and forces will be A,D and E.

To learn more about the magnet, refer to the link;

brainly.com/question/13026686

#SPJ1

The new force of attraction between the two objects will be 16 times the old case.

Newton's law of gravity states that each particle having mass in the universe attracts each other particle with a force known as the gravitational force.

Gravitational force is proportional to the product of the masses of the two bodies and inversely proportional to the square of their distance.

[tex]\rm F =\frac{GmM}{r^2}[/tex]

For case 1;

r₁=r

For case 2;

r₂=r/4

[tex]\rm F'=\frac{GmM}{(\frac{r}{4})^2} \\\\ F'=16 F[/tex]

Hence,the new force of attraction between the two objects will be 16 times the old case.

To learn more about Newton's law of gravitation refer to the link; https://brainly.com/question/9699135

#SPJ1

Any circuit diagram given the funda is same .

Answer:

see  picture
Sample Response: The lightbulb will light because this is a parallel circuit. Even though the switch is open in one branch, the branch the lightbulb is in forms a closed circuit, allowing the current to flow through the bulb.

Explanation:

Balanced forces are forces that do not result to change in motion while unbalanced forces are forces that result to change in motion.

Force is defined as the product of mass and acceleration of an object. That is Force = mass × acceleration.

Balanced force is a type of force that do not result to change because the forces are equal in size and opposite.

Unbalanced force is a type of force that result to change because forces on the opposite sides are not equal.

Learn more about forces here:

https://brainly.com/question/12970081

#SPJ1

Answer:

100m/s

Explanation:

speed of wave=frequency × wave length

=10 × 10

=100m/s

Answer:

100 m/s

Explanation:

Formula :

Solving using the given values :

Answer:

.5097

Explanation:

Original KE = 1/2 (100)(20)^2 = 20 000 J

the force of friction must work this hard to stop the object in 40 m

Ff  *40 = 20 000  

Ff = 500 =   Fn u         u = coeff of kinetic friction

       500 = (100)(9.81) u

           u = .5097

The kinetic friction coefficient between the object and the ground is 0.5097.

The friction force to normal force ratio experienced by a body moving on a dry, non-smooth surface is denoted by the kinetic friction coefficient k.

Formula :

μk = [tex]\frac{Ff}{Fn}[/tex]

Therefore,

Original KE = 1/2 (100)(20)^2 = 20 000 J

the force of friction must work this hard to stop the object in 40 m

Ff  × 40 = 20 000  

Ff = 500 =   Fnμ       μ = coeff of kinetic friction

      500 = (100)(9.81) μ

          μ = 500/(100 x 9.81)

          μ = .5097

To learn more about coefficient of kinetic friction refer to:

https://brainly.com/question/20241845

#SPJ2

Answer:

number d

Explanation:

because plant need carbondioxide

the answer for number 2 is B

Answer:1mm

Explanation:

Answer:

Well before every single shift.

Explanation:

I acutally learned this yesterday

Answer:

25 joules

Explanation:

Not sure I understood correctly but since 15 are taken up by mechanical energy and 10 are taken in by electrical, 50-10-15 would result in 25 joules which must belong to heat energy

Answer:

A & C

Explanation:

Answer:

A and C

Explanation:

Answer:

Aristotle classified animals on the basis of habitat.

Explanation:

Hope it helps you :)))))

have a good day

Answer:

Earth rotates eastward, in prograde motion. As viewed from the north pole star Polaris, Earth turns counterclockwise.

The time it takes Earth to rotate so the sun appears in the same position in the sky, known as a solar day, is 24 hours. However, the time it takes Earth to complete one full rotation on its axis with respect to distant stars is actually 23 hours 56 minutes 4.091 seconds, known as a sidereal day.

Earth's axis is an imaginary pole going right through the center of Earth from "top" to "bottom." Earth spins around this pole, making one complete turn each day. That is why we have day and night, and why every part of Earth's surface gets some of each. Earth has seasons because its axis doesn't stand up straight.

Earth and sun are part of the solar system, with the sun at its centre. An Earth day is 24 hours because the Earth spins on its axis once every 24 hours. At any one time half of the Earth's sphere is in sunlight (day) while the other half is in darkness (night).

The Earth's axis runs from the North Pole to the South Pole. It takes the Earth 24 hours, or one day, to make one complete rotation around this invisible line. As the Earth rotates, each area of its surface gets a turn to face and be warmed by the sun. This is important to all life on Earth

11. The wavelength of the light ray in air is 0.589 x 10⁻⁶ m.

12. Angle of incidence for the light ray at point P is 43.23°.

13. The absolute index of refraction for medium X is 1.46

It states that the ratio of sine of angle of incidence and angle of refraction is equal to the refractive index of first medium to the second medium.

sini/sinr = n₁/n₂

11. The wavelength is related to the frequency as

λ = c/f

where c = 3 x 10⁸ m/s and frequency f = 5.09x 10¹⁴ Hz

Put the values, we get

λ = 3 x 10⁸/ 5.09x 10¹⁴

λ =0.589 x 10⁻⁶ m

Thus, the wavelength of the light ray in air is 0.589 x 10⁻⁶ m.

12. Given the angle of incidence is i, angle of refraction r =90° ,  n₂ = Refractive index of medium X = 1.46 and n₁ = Refractive index of air = 1

Substituting the values into Snell's law expression we get,

sin i= sin 90 x 1/1.46

i = 43.23 degrees

Thus, the angle of incidence is  43.23 degrees.

13. The refractive index is the ratio of speed of light  in vacuum to the speed of light in the medium X.

n = c/v₂

If v₂ is the velocity of light in medium X, then

sin i / sin r  = v₂/v₁

sin 43.23 / sin 90 =  v₂/ 3 x 10⁸

v₂ = 2.055 x 10⁸ m/s

So, the refractive index be

n = 3 x 10⁸/2.055 x 10⁸

n = 1.46

Thus, absolute index of refraction for medium X is 1.46

Learn more about Snell's law.

brainly.com/question/10112549

#SPJ1

I believe a scale is good

Answer:

Because some of the energy escaped or was used.

Explanation:

#1

These are two types of activities either muscular or cardiovascular.

#2

They are differing in the muscles they target ,Either cardio else others.

#3

Cardiovascular fitness is the fitness of our heart's muscular.Doing cardio workouts can be quite helpful in maintaining that fitness level

Muscular endurance denotes to strengthen of muscles like biceps ,knees ,ankles ,abs etc .

Answer:

9kg.

Explanation:

Data obtained from the question include:

F (force) = 45N

a (acceleration) = 5 m/s2

m (mass) =?

Force is simply the product of mass and acceleration as given by the formula: F = ma. With this formula (i.e F = ma) we can easily calculate the mass of the object. This is illustrated below:

F = ma

m = F/a

m = 45/5

m = 9kg.

Therefore, the mass of the object is 9kg

The correct answer from each drop-down menu are in this case:

In a given mechanical system, in which forms of energy related to electromagnetic or thermal phenomena are not present, it can be said that the total energy of the system is purely mechanical. Thus, the Principle of Conservation of Energy implies the conservation of mechanical energy.

This, in turn, is the sum of the amounts of kinetic energy and various forms of potential energy (gravitational and elastic among them). Although mechanical energy is always constant, the amount of each of its components can change such that the total energy remains constant.

See more about energy conservaion at brainly.com/question/1932868

#SPJ4

Answer:

c on ed

Explanation:

The coefficient of kinetic friction between Thumper and the ice is determined as 0.1.

The coefficient of kinetic friction between Thumper and the ice is determined as follows;

μk = a/g

where;

a = v/t

a = 8/12

a = 0.667 m/s²

μk = a/g

μk = 0.667/9.8

μk = 0.1

Learn more about coefficient of kinetic friction here: https://brainly.com/question/20241845

#SPJ1

Answer:

B

Explanation:

Depends Mostly on bonds electrolysis can be used, chemical bonding like additional of water or by heating back to their elements.

Hello!

We can use the equation of Newton's Law of Universal Gravitation to solve for the Force of Gravity:
[tex]F_g = \frac{Gm_1m_2}{r^2}[/tex]

Fg = Gravitational Force (N)
G = Gravitational Constant (6.67 × 10⁻¹¹ Nm²/kg²)

m1, m2 = masses (both 8.3 kg in this situation)

r = distance between the center of masses of the objects (0.165 m)

Plug in the given values and solve.

[tex]F_g = \frac{(6.67 \times 10^{-11})(8.3)(8.3)}{(0.165^2)} = \boxed{1.6878 \times 10^{-7} N}[/tex]