Identify three resources that are mined from the Earth's crust.

Answer:

4 m/s²

Explanation:

Formula

Solving :

Answer:

Explanation:

accleration = Force /mass

a = 400 / 100

a = 4 m/s^2

Answer:

Juno

Explanation:

The NASA spacecraft Juno (2016) is the one that was studying Jupiter more in detail.

I hope it helps! Have a great day!

Anygays-

Answer:

the light speed up and change it directtions

Answer:

72 km / hour

Explanation:

Speed equals to distance over time. We are given distance equal 360 km and time in 5 hours.

Hence:

[tex]\displaystyle \large{s=\frac{360}{5}}\\\displaystyle \large{s=72}[/tex]

Therefore, the speed is 72 km / hour.

Notes

Sometimes, speed is defined as ‘v’ while velocity is defined as ‘v vector’ indicating that velocity is speed with direction and speed is just velocity with only magnitude.

__________________________________________________________

The primary difference between momentum and kinetic energy is kinetic energy can cancel momentum.

The kinetic energy of an object is the energy possessed by the object due to its motion.

KE = ¹/₂mv²

where;

Momentum of an object is the measure of the rate at which a mass is moving.

P = mv

K.E = ¹/₂(P)v

Thus, the primary difference between momentum and kinetic energy is kinetic energy can cancel momentum.

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Answer:

yea it seems pretty simple.... just follow the instruction

Parallel information system is when an old information system in shut down and a new system starts up right after the shut down.

An information system is a system in which information are passed or transmitted from one end to another especially from senders to receivers to achieve a particular goal.

Therefore, Parallel information system is when an old information system in shut down and a new system starts up right after the shut down.

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Answer:

Drop zone :)

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Answer:

if it was a love story you could call it ¨falling for you¨ hehe though since it's a project I'm guessing it's not a love story lol.

Explanation:

Answer:

Josie's ball faster than T

Answer:

law of action and riactiond

(a) When the voltage increases, the electric field increases, and vice versa.

(b) When the distance of the charge increases, the electric field strength decreases, and vice versa.

The direction of the electric field depends on the direction of the positive charge, electric field is always directed opposite to positive charge.

The potential of a unit charge is the product of the electric field strength and the distance of the charge.

V = Ed

E = V/d

Thus, when the voltage increases, the electric field increases, and when the voltage decreases, the electric field decreases.

Also, when the distance of the charge increases, the electric field strength decreases, and the distance decreases, the electric field strength increases.

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The process which involves plants to cause weathering to a seed that falls into a crack in a rock therefore, breaking apart the rock is called Mechanical weathering.

This is defined as the set of weathering processes that break apart rocks into particles (sediment) through physical processes. The most common form of mechanical weathering is the freeze-thaw cycle. Water seeps into holes and cracks in rocks then the water freezes and expands, therefore making the holes larger eventually making the rock split apart.

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Answer:

root-pry

Explanation:

i took the test

Explanation:

a) Peroid = 1/frequency

F = 2 rev. per second = 2Hz

period = 1/2 = 0.5s

b) Tangential velocity(Vt) = ωr, where ω is thr angular velocity(2 * Pi(3.142) * f(frequency)) and r is the radius

Therefore; Vt = 2 * 3.142 * 2 * 0.65(65/100)

= 8.1692

= 8.2m/s

c) a = (V^2)/r where V is the velocity and r is the radius

a = (8.2^2)/0.65

a = 103m/s^2

Answer:

Most stars in the Milky Way's halo are very old

very oldThere is no recycling of gas in the halo, so halo stars are quite old.

The requried, "Most stars in the Milky Way's halo are very old."

The Milky Way halo is a large, spherical region surrounding the disk of the galaxy, and it is believed to be composed primarily of ancient stars that formed early in the history of the galaxy.

Here,

These stars are typically metal-poor, which means they have lower abundances of elements heavier than hydrogen and helium compared to stars in the disk. They are also old, with estimated ages of several billion years or more.

The halo stars are believed to have formed in small, isolated systems that were later accreted by the Milky Way. They are widely dispersed and do not form dense concentrations like those found in the disk or in globular clusters.

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Since a 1.03 × 10² mA current is used to charge up the parallel plate capacitor and a large square piece of paper is placed between the plates and parallel to them so it sticks out on all sides, the value of ∫B.ds around the perimeter of the paper is 1.29 × 10⁻⁷ Tm

This shows the relationship between the magnetic field, B, the path of integration, ds and the current enclosed by the magnetic field, i.

Ampere's law is given mathematically as

∫B.ds = μ₀i where

Given that for the large square piece of paper, the current used to charge the capacitor is

Since ∫B.ds = μ₀i

Substituting the values of the variables into the equation, we have

∫B.ds = μ₀i

∫B.ds = 4π × 10⁻⁷ Tm/A × 1.03 × 10⁻¹ A

∫B.ds = 4.12π × 10⁻⁸ Tm

∫B.ds = 12.94 × 10⁻⁸ Tm

∫B.ds = 1.294 × 10⁻⁷ Tm

∫B.ds ≅ 1.29 × 10⁻⁷ Tm

So, the value of ∫B.ds around the perimeter of the paper is 1.29 × 10⁻⁷ Tm

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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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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.

Answer:

1.diffusion, process resulting from random motion of molecules by which there is a net flow of matter from a region of high concentration to a region of low concentration. A familiar example is the perfume of a flower that quickly permeates the still air of a room.

2.Rigidity means no bending — in that case, of the rules. Objects and substances can have rigidity as well, if they literally won't bend. Rigidity means about the same thing as inflexibility, another word that describes rock-solid, unyielding people and substances.

3.the ability of a substance to flow easily

Explanation:

Hope it helps

Answer:

Uhm where are the questions and answers?

Answer:

  cue ball final: 0.85 m/s at N65°W

  8-ball final: 1.27 m/s at N12°E

Explanation:

In a perfectly elastic collision, both momentum and energy are conserved. The momentum is the sum of products of mass and velocity. The energy is half the product of mass and the square of velocity. The difference of "particle" velocities changes sign as a consequence of the collision.

__

If we let the masses be m1 and m2, the corresponding initial velocities be v1 and v2, and the final velocities be u1 and u2, we have ...

  m1·u1 +m2·u2 = m1·v1 +m2·v2 . . . . . . . conservation of momentum

  u1 -u2 = v2 -v1 . . . . . . . . . . . . . . . relative velocity sign changes

This pair of linear equations can be solved for u1 and u2 in any of the usual ways to give ...

  u1 = v1(m1 -m2)/(m1 +m2) + v2(2·m2)/(m1 +m2)

  u2 = v2(m2 -m1)/(m1 +m2) +v1(2·m1)/(m1 +m2)

__

Using angle measures as clockwise from north, we are given ...

  cue ball: m1 = 0.17 kg, v1 = 1.2∠10° m/s

  eight ball: m2 = 0.15 kg, v2 = 0.89∠-70° m/s

A suitable calculator can find the final velocities using the above equations.

The first attachment shows the calculations using a TI-84 work-alike calculator.

  cue ball final: 0.85 m/s at N65°W

  8-ball final: 1.27 m/s at N12°E

The second attachment shows a vector diagram of the velocities.

Answer:

Before it strikes the tree:

KE = 1/2 m v^2 = 1/2 * 30 kg * (200 m/s)^2

This KE would be 6.0E5 Joules

30 kg would about 66 lbs - obviously too heavy

You might consider 30 mg = .03 kg (still quite heavy)

KE = 1/2 * .03 kg * 40000 m.s^2 = 600 J       more realistic

Answer:

0.00377143

Explanation:

You would have to divide to get the frequency.

1.32/350 = 0.00377143

I apologize if it is incorrect-

I hope it helps! Have a great day!

Anygays-

Answer:

75%(TT,Tt,tt) Hope that helps

Answer:

A comet

Explanation:

A comet is composed of mostly ice. As it passes close to the sun, it warms up and begins to release gases, the gases seem longer and they look like a tail. Because the ice gets warmer close to the sun and because it's icy, it changes from ice to liquid and finally vapour. hence evaporaction.

Answer:

A or B you choose

Explanation:

This is called current electricity or an electric current. A lightning bolt is one example of an electric current, although it does not last very long. Electric currents are also involved in powering all the electrical appliances that you use, from washing machines to flashlights and from telephones to MP3 players.

what is an electrical current, amp, ampere Current is the flow of electrons. When a circuit is closed then a current of electrons can flow and when a circuit is open then no current can flow. We can measure the flow of electrons just like you can measure the flow of water through a pipe.

High energetic winds turning generator , causing electrons to flow into power lines is an example of current electricity. Remaining all are examples of static electricity .

The movement of electrons from one area of the circuit to another is referred to as current electricity. Free electrons flow between two points when two bodies with different potentials are connected by a wire, until both objects reach the same potential, at which point the current stops.

Current flows until a potential difference exists throughout the conductor. The following techniques can be used to produce current electricity:

1. Through the passage of a metal wire through a magnetic field (Both alternating current and direct current can be generated by the following method)

2.Utilizing a battery and chemical reactions (Direct current can be generated through this method)

Here, the wind's kinetic energy provide the mechanical energy for the generator to to produce power lines. Hence option A is correct. All others are static electricity for short time only.

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Answer:

887.5 J

Explanation:

Kinetic energy is the energy gained by a body due to its motion.

Its formula is :-

KE = [tex]\frac{1}{2} mv^{2}[/tex]

Values we are given :

Substituting :

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-

Given that the satelite's angular speed is given,The angular speed at the perihelion is : 9.2426 * 10⁻⁵ rad/s

Given data:

Satellite period = 8 * 10⁴ s

mass of planet (Wa)  = 7 * 10²⁴ kg

Radius of Aphelion ( Ra ) = 4.5 * 10⁷ m

satellite angular speed ( Vp )= 7.158 * 10⁻⁵ rad/s

Applying kepler's law

VpRp = VaRa

where:

Vp = ( Ra / Rp ) Va

and

Wp = Vp / Rp  = ( RA / Rp )² Wa  ---- ( 1 )

Note : Assuming a is distance from the center oto the end of the satelite

Rp = 2a - Ra  ---- ( 2 )

Next step : determine the value of a

applying the formula below

a = [tex](\frac{T\sqrt{Gmplanet} }{2\pi } )^{2/3}[/tex] --- ( 3 )

where ; T = 8 * 10⁴ s,  G = 6.67 * 10⁻¹¹ ,  Mplanet = 7 * 10²⁴ kg

input values into ( 3 )

a = 42300747.03 m

Final step : determine the angula speed at perihelion

Back to equation ( 1 ) and ( 2 )

Wp = ( RA / 2a - Ra  )² Wa  

      = 9.2426 * 10⁻⁵ rad/s.

Hence we can conclude that Given that the satelite's angular speed is given,The angular speed at the perihelion is : 9.2426 * 10⁻⁵ rad/s

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