Lewis structure for BeCI2
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Answer:

W = F * S     one does not know the work performed because one does not know what force produced the resulting work. Neither can one calculate the power required because P = W / t  (work / time)

One only knows the distance and the time but not the force required.

Answer:

 B C     I suppose , though A is correct too

Explanation:

The arrows on the magnetic field lines point from the magnet's north pole to its south pole. The field lines are closest together in and near the magnet. Thus, the correct options are B and C.

Magnetic force is the force of the electrically charged particles which are in motion, such as attraction, or repulsion results from their activity. It is the fundamental force behind the phenomena like how electric motors operate and magnets are drawn to metals.

Usually, when we draw magnetic field lines, we start to draw outwardly from the North pole to the South Pole. This same direction is prevalent on the Earth due to the fact that the Earth functions as a giant magnet. Thus, the model describes that the magnetic field lines will spread out of the north end of the magnet to the south end. The magnetic field lines are closest in and near the magnet.

Therefore, the correct options are B and C.

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Answer:

The average speed would be the 200 miles/4 hours.

The average velocity would be the net displacement to the north at 80 miles/4 hrs = mph

Explanation:

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:

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 :

Sugar molecules present at the bottom of solution due to more mass.

Table sugar is more dense than water due to the presence of more mass of sugar molecule as compared to water. We know that denser objects has more mass so that's why sugar molecules present at the bottom of solution due to more mass.

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Answer:

Newton's third law of motion says, "For every action there is an equal and opposite reaction." So that applied to the student's roller coaster, between the marble and the track. When the marble went up and down the hill, it created different forces onto the track.

Explanation:

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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.

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

By minimizing harms and risks and maximize benefits , respect human dignity, privacy and autonomy, take special precautions with vulnerable population and strive to distribute the benefits and burdens of research fairly

Answer: 268.80 W/m^2

Explanation:

Intensity = Power/Area

first convert radius to meters

1.5mm= 1.5x10^-3m

area= pi (1.5x10^-3)^2

= 7.069m^2

convert power to W

1.9mW= 1.9x10^-3W

plug into intensity formula

(1.9x10^-3)/(7.069) = 268.80 W/m^2

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:

brainless plsss

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:

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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Explanation:

do we can say that the first step is finding the acceleration of the object. We do so by saying F = ma

so a = F/m

a = 500 m/s^2

we now have the time, acceleration and initial velocity.

so we can find the final velocity by using one of newtons equations which is: vf = vi + at

so:

vf = 0 + 500 × 12

vf = 6000

note that our initial velocity was zero since the object was initially at rest.

if you still have any doubt dont hesitate to ask for further help.

The new force acting between the charges in terms of f given the data from the question is half f

F = Kq₁q₂ / r²

Where

F = Kq₁q₂ / r²

F₁ = f = Kq₁q₂ / d²

F = Kq₁q₂ / r²

F₂ = K2q₁q₂ / (2d²

F₂ = 2Kq₁q₂ / 4d²

F₂ = Kq₁q₂ / 2d²

F₂ = ½(Kq₁q₂ / d²)

But

f = Kq₁q₂ / d²

Therefore

F₂ = ½f = half f

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Answer:

C or 1/2

Explanation:

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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How we could distinguish them is that the infrasonic sounds are the lower limit of human hearing while ultrasonic sound is above human hearing. The sound of frequency more than 20,000Hz are called ultrasonics while the frequency less than 20Hz are called infrasonics.

Explanation:

I hope it helps! Have a great day!

Anygays-

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:

See below

Explanation:

A lot !

KE = 1/2 m v^2

    = 1/2 * 1.35 * ( .501 * 3 * 10^8)^2 =

    1.5248 x 10^16 j

kinetic energy do Superkid's super arm muscles give the stone is 62.6 × 10⁶ J.

Kinetic energy is the energy associated with a motion of a body. When a body is in motion having mass m then it has kinetic energy. Kinetic energy is denoted by K or T. it is expressed in joules. Kinetic energy is given by,

K = 1/2 mv²

Hence an object having zero mass or zero velocity have zero kinetic energy.

In this problem the stone is moving with velocity which is comparable with the speed of light, hence we have to find relativistic kinetic energy.

The relativistic kinetic energy is given by,

[tex]K = m_{0} c^2(\frac{1}{\sqrt{1-\frac{v^2}{c^2}} } -1)[/tex]

putting all the values in the equation

[tex]K = 1.35*3*10^8(\frac{1}{\sqrt{1-\frac{(0.5c)^2}{c^2} } }-1 )[/tex]

K = 62.6 × 10⁶ J

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Answer:

it should be iii) Upthrust exerted on P is more than the upthrust exerted on Q

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:

law of action and riactiond

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

Based on the fact that the student is moved twice as far from the center of the earth, her new weight will be 112.5 N.

When the student was moved by the same distance from the center of the earth, her weight was halved.

When she was then moved twice as far, her weight was halved again.

This means that her new weight is:

= 450 x 1/2 x 1/2

= 450 x 1/4

= 112.5 N.

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Answer:

3 m/s^2

Explanation:

Simply   F = ma

            15 = 5 a

             a = 3 m/s^2

Answer:

the light speed up and change it directtions

Answer:

C

Explanation:

.5 lb/month   * 4 month = 2 lbs