Help a brother out pleaseeeeew

Answer:

Because Rod protect house from burning down and people from electrocution.

Movement occurs on the compass when there is magnetic field in the surrounding environment.

The movement of the needle appears which represents the presence of magnetic field. The moving compass around confirm that there magnetic field present in that region because the magnetic field is detected by the compass.

A magnetic field is invisible force which can be detected by a compass. A compass contains a small bar magnet which can rotate when it experience magnetic field around it so we can conclude that movement occurs on the compass when there is magnetic field in the surrounding environment.

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Answer:

[tex]30 \div 33750 = 0.008888[/tex]

Explanation:

he fell down with telling any one,

Answer:

that is the answer

Explanation:

look at it

Answer:

The answer is probably A

Answer:

200 (m) for 20 seconds

10 times 20 is 200

Answer:

200

Explanation:

Jill is running at 10 meters per second

20 * 10 = 200

Answer:

Na: lose 1

O: gain 2

Al: lose 3

Be: lose 2

N: gain 3

Cl: depends on the limit of your study im grade nine and the energy level M can hold only eight electrons so i would have answered (gain 1)

Explanation:

The atoms according to the number of electrons it will lose or gain is matched as follows;

Sodium → lose 1

Nitrogen → gain 3

Sulphur → gain 2

Fluorine → gain 1

Boron → lose 3

Beryllium → lose 2

Atoms are the building block of matter. The outermost electron of an atom determines the number of electron an atom loose during bonding. Therefore,

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Answer:

tips to get you started

Make a menu. ...

Plan your meals around foods that are on sale. ...

Plan at least one meatless meal a week. ...

Check your pantry, refrigerator and freezer. ...

Enjoy grains more often. ...

Avoid recipes that need a special ingredient. ...

Look for seasonal recipes. ...

Plan to use leftovers.

Explanation:

sana po makatulong

Answer:

It is the combination of social and historical factors.

The potential energy of the ball just before the kick was taken is zero (0).

Potential energy is the energy possessed by an object due to its position above the ground.

The Potential energy of the ball is calculated as follows;

P.E = mgh

where;

P.E = 1.5 x 9.8 x 0

P.E = 0

Thus, the potential energy of the ball just before the kick was taken is zero (0).

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Answer:

T≈2.2876585681s

Explanation:

Since you were not given the degrees of amplitude or radians of amplitude, we assume that the degrees of amplitude are less than 20∘ or 20∘ and we also assume that this is a simple pendulum

The kinetic energy of the circular disc in initial state is,

[tex]K^{1r} = \frac{1}{2}I^{t}ω^{ \frac{2}{i} } [/tex]

The initial kinetic energy of the other disc dropped on the first disc is,

[tex]K^{2r} = \frac{1}{2}I^{b}(0)^{2}[/tex]

[tex] = > K^{2r} = 0J[/tex]

As both the disc in the final state are moving with the same angular velocity, thus, the net kinetic energy in the final state is,

[tex]E^{f} = \frac{1}{2}(I^{t} + I^{b})ω^{ \frac{2}{f} }[/tex]

The net kinetic energy in the initial state is,

[tex]E^{i} = K^{1r} + K^{2r}[/tex]

[tex] = > E^{i} = \frac{1}{2} I^{t}ω^{ \frac{2}{i} } + 0[/tex]

[tex] = > E^{i} = \frac{1}{2} I^{t}ω^{ \frac{2}{i} }[/tex]

Thus, the change in the kinetic energy during the change of state is,

[tex]dE = E^{f} - E^{i}[/tex]

[tex] = > dE = \frac{1}{2} (I^{t} + I^{b})ω^{ \frac{2}{f} } - \frac{1}{2}I^{t}ω^{ \frac{2}{i} } [/tex]

[tex] = > dE = \frac{1}{2} I^{t}(ω^{ \frac{2}{f} } - ω^{ \frac{2}{i} }) + \frac{1}{2}I^{b}ω^{ \frac{2}{f} } [/tex]

This change in value of energy is the energy lost initially rotating the disk to friction.

Hence, the energy lost in the given case is [tex]dE = \frac{1}{2} I^{t}(ω^{ \frac{2}{f} } - ω^{ \frac{2}{i} }) + \frac{1}{2}I^{b}ω^{ \frac{2}{f} } [/tex]

The energy lost initially by the rotating disk to friction is equal to [tex]\frac{1}{2}I_t (\omega_f^2 - \omega_i^2)+\frac{1}{2} I_b\omega_f^2[/tex]

Given the following data:

At the initial state, the kinetic energy of the circular disc is given by this formula:

[tex]K.E = \frac{1}{2} I_t\omega_i^2[/tex]

For the second disc, the initial kinetic energy is given by this formula:

[tex]K.E_2 = \frac{1}{2} I_b\omega_f^{2 }\\\\K.E_2 = \frac{1}{2} I_b(0)^{2 }\\\\K.E_2 = 0[/tex]

At the final state, the discs would move with the same angular velocity and the net kinetic energy is given by this formula:

[tex]E_f = \frac{1}{2} (I_t + I_b)\omega_f^2[/tex]

For the energy lost:

Also, the change in the kinetic energy is given by this formula:

[tex]\Delta E = E^f - E^i\\\\\Delta E = \frac{1}{2} (I_t + I_b)\omega_f^2 - \frac{1}{2} I_t\omega_i^2\\\\\Delta E = \frac{1}{2}I_t (\omega_f^2 - \omega_i^2)+\frac{1}{2} I_b\omega_f^2[/tex]

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The force required to keep the beam in equilibrium is 90 N.

It states that for a system at equilibrium, the sum of the clock-wise moment is equal to the sum of anti clock wise moment.

To calculate the magnitude of the force required to keep the beam at equilibrium, we use the Formula below.

Formula:

Where

Make f the subject of the equation

From the question,

Given:

Substitute the given values into equation 2

Hence, The force required to keep the beam in equilibrium is 90 N.

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Distance is the measure of the length of ground covered by an object during its motion. Distance is a scalar quantity. The car will travel 69 m while accelerating.

Distance is the measure of the length of ground covered by an object during its motion. While the displacement is defined as the shortest distance between the two paths.

Distance is a scalar quantity. While displacement is a vector quantity. Mathematically it is given as the product of speed and time.

The following data are given in the problem as

u is the initial  speed=5.0 m/sec

v is the final speed=21 m/sec

s is the distance covered by the car =?

a= Acceleration of car =3.0 m/sec²

According to Newton's third equation of motion, the formula derived will be

[tex]\rm{v^2=u^2+2as \\\\[/tex]

[tex]\rm s = \frac{v^2-u^2}{2a} \\\\\rm s = \frac{(21)^2-(5)^2}{2\times3.0} \\\\ \rm s=69 m[/tex]

Hence the car will travel 69 m while accelerating.

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Apply Newton's second law

[tex]\\ \tt\hookrightarrow F=ma[/tex]

[tex]\\ \tt\hookrightarrow F=1167(4)=4668N[/tex]

Now

[tex]\\ \tt\hookrightarrow W=Fd[/tex]

[tex]\\ \tt\hookrightarrow d=\dfrac{W}{F}[/tex]

[tex]\\ \tt\hookrightarrow d=\dfrac{105}{4668}[/tex]

[tex]\\ \tt\hookrightarrow d=0.022m[/tex]

Now

According to third equation of kinematics

[tex]\\ \tt\hookrightarrow v^2=u^2+2as[/tex]

[tex]\\ \tt\hookrightarrow v^2=10^2+2(4)(0.022)[/tex]

[tex]\\ \tt\hookrightarrow v^2=100+8(0.022)[/tex]

[tex]\\ \tt\hookrightarrow v^2=100+0.176[/tex]

[tex]\\ \tt\hookrightarrow v^2=100.176[/tex]

[tex]\\ \tt\hookrightarrow v=10.001m/s[/tex]

Answer:

yes it do rises and then fall down due to gravitational

Answer:

They are provided with keen senses of sight, smell and hearing.

Answer:

Terrestrial animals

During a lightning storm, the bottom of a cloud gains a strong negative electric charge. If you were to measure the charge at the top of a tall metal pole directly under the cloud, what would you expect to observe? The top of the pole would have no charge. The top of the pole would have a positive charge.

In the given scenario, the positive charges within the pole concentrate at the top of the pole to be near the negatively charged cloud bottom.

A thunderstorm, also widely recognized as an electrical storm or even a lightning storm, is a type of storm that is distinguished by the presence of lightning and its acoustic effect on the Earth's atmosphere, which is known as thunder.

Thundershowers are thunderstorms that are relatively weak. Warm air rises and cools, condensing into small droplets of water.

If the air is sufficiently unstable, the updraft of warm air is rapid, and the water vapor forms a cumulonimbus cloud quickly. These cumulonimbus clouds typically form in less than an hour.

In the given scenario, the positive charges within the pole concentrate near the negatively charged cloud bottom at the pole's top.

Thus, this is the observation that can be expected.

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WHAT? I DON'T UNDERSTAND WHAT ARE YOU SAYING

Answer:

S waves are transverse and cannot travel through liquids. P waves are longitudinal and can travel through liquids. When an earthquake happens on one side of the Earth, P and S waves can be detected all around the world.  S waves cannot be detected on the opposite side of the earth but can be detected at angles less than or equal to 90 degrees or slightly more. This is because there is a liquid core in the centre of the earth preventing the S waves from travelling to the direct opposite side of the Earth. P waves can be detected all around the world

Explanation:

Answer/Explanation:

The magnetic fields line are closer apart at other places. Hence, magnetic field is strongest at the poles. Magnetic Field has Direction The Magnetic Field lines are like closed curves They emerge from North Pole and Merge to South Pole.

Brainliest?!

Check out the Image below!

Answer:

Simple as 50 km/h

Explanation:

Since the average being measured is of the hours and not distance, it is simply (60+40)/(2+2)

Answer:

Explanation:

Power = work / time

P = 400 J / 5 s

P = 80 watts

Answer: 15 kg*m/s

Explanation:

Momentum = mass*velocity

Momentum = 3kg*5 m/s

Momentum = 15 kg*m/s

Answer:

15 kg m/s

Explanation:

Momentum = mass xvelocity

Momentum = 3kgx 5 m/s

Momentum = 15 kg m/s

Answer:

8 valence electrons

Explanation:

Fluoride is F^-, so it has one additional electron, which is expected to be in a valence level (completing a closed-shell inert-gas structure). Thus fluoride should be 1s^2,2s^2,2p^6 , and have 8 valence electrons.

Answer:

Hertz is the answer for this question

Answer:

its position relative to some zero position

Explanation:

your welcome