What influences the strength of an electric field?

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The answer would be C. feels slippery. This is because at a base solution brings out and breaks down acids and oils which causes it to feel slippery to the touch.

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The volume of the marble is 1.11 cubic meter.

We have a marble whose mass is 3 g and density is 2.7 g/[tex]m^{3}[/tex].

We have to determine its volume.

The relation between the mass and density of any solid is given by -

M = ρV

Where -

M - mass of body

ρ - density of body

V - volume of body

According to the question -

M = 3 g

ρ = 2.7 g/[tex]m^{3}[/tex]

Using the formula discussed above, we get -

M = ρV

V = [tex]\frac{M}{\rho}[/tex] = [tex]\frac{3}{2.7}[/tex] = 1.11 cubic meter

Hence, the volume of the marble is 1.11 cubic meter.

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The answer is false, I did the assignment and true was wrong. The right answer is "False".  

Proof:

Answer:

5/6 amps or .833 amps

Explanation:

W = VI

100 = (120)I

I = 100/120 = 5/6

The heat that made in a bread toaster is infrared radiation. The coils inside the toaster produce infrared radiation and thus produce enough heat energy to be hot.

A bread toaster is a device used for cooking bread and related food items. The bread pieces can  be easily heated using a toaster. Inside a toaster sufficient heat energy is produced to cook the breads.

Generally electric toasters uses a nichrome wire which wrapped back and forth surrounding a sheet made of mica. The nichrome coil produce high electrical resistance to get hot. One of the advantage of this alloy is that, they does not oxidise as iron.

A toaster radiated much energy by consuming maximum amount of electrical energy  with high power rate. Heat is produced by conducting electricity through non-magnetic alloy nichrome wires.

The radiating wire make the coils glow red and which indicates the coils have much heat energy to toast the breads. This heat energy make its sheet surroundings to be hot and that's why sally felt it too hot.

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Answer:

A- 20 protons and 20 electrons

Explanation:

The angle of inclination is calculated using sin function,

sin θ = 5 m / 20 m = 0.25

θ = 14.4775° 

The net force exerted is then calculated:
F net = m g sin θ = 20 * 9.8 * 0.25

F net = 49N 

Work is product of net force and distance:
W = F net * d = 49 * 20

Work = 980 J 

Answer:

Option D. Oxygen

Explanation:

Aristotle believed that there were four elements Earth, water, fire and air with which everything is made up of.

Stars can not be made out of any of the four elements.

Therefore, in the given options Oxygen is the element which is not one of Aristotle's four elements.

Option D. Oxygen is the answer.

Answer:

12000 coils

Explanation:

It is given that,

The voltage across the primary winding V₁ = 350,000 V

The voltage across the secondary winding V₂ = 17500 V

Number of coils in secondary winding, N₂ = 600

We have to find the number of coils in primary winding. It can be calculated suing turn ratio equation as :

[tex]\dfrac{V_1}{V_2}=\dfrac{N_1}{N_2}[/tex]

[tex]N_1=(\dfrac{V_1}{V_2})\times N_2[/tex]

[tex]N_1=(\dfrac{350000}{17500})\times 600[/tex]

[tex]N_1=12000[/tex]

Hence, the number of coils in primary winding is 12,000

Answer:

Answer is 3 because 6 / 2 = 3 Speed of eastward passage: 3 / 1 = 3 Speed of whole trip: (6 + 3) / (2 + 1) = 3

Explanation:

The first and fourth answers work but so does the third one. It just depends on where it occurs.

An earthquake is a sudden, violent shaking of the ground brought on by the movement of rocks located deep within the earth. Thus option A, D is correct.

Earthquakes can disrupt gas, electricity, and telephone services, cause buildings and bridges to collapse, and occasionally create landslides, avalanches, flash floods, fires, and tsunami.

As a result of earthquakes, landslides, and other ground movement, things can move, fires can break out, tsunamis can occur, and more. Even a mild earthquake has the potential to cause home goods to move and pipes to burst.

Therefore, it is uncommon for ground vibrations to cause an earthquake's deaths or injuries. Falling objects, flying glass, and collapsing walls triggered by ground shaking are to blame for the bulk of earthquake-related injuries and fatalities.

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Neutral atoms carry no charge because they have equally balanced numbers of positively charged protons and negatively charged electrons. If an atom becomes an ion, it either gained or lost electrons, which affects its overall charge resulting in either a positive or negative charge.

In neutral atoms, the number of positively charged protons and negatively charged electrons are equal. This balance gives rise to the atom's overall neutral net charge. The charge in an atom is defined by the equation: Atomic Charge = number of protons - number of electrons. If an atom gains or loses electrons, it ceases to be neutral and becomes an ion.

For instance, an atom that gains electrons has a negative charge and is called an anion. An atom that loses electrons, on the other hand, has a positive charge and becomes a cation.

Should the balance be disturbed, for instance, if a neutral sodium atom loses an electron, it would form a cation with a 1+ charge. On the contrary, if a neutral oxygen atom acquires two electrons, it would form an anion with a 2- charge.

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The correct statement for the possible number of compounds that can be formed is that there are a finite number of possible compounds because the number of elements is limited. Hence, option C is correct.

Any material made up of similar molecules with atoms from two or more distinct chemical elements is referred to as a chemical compound. Atoms from more than 100 distinct chemical elements, both in their pure forms and when mixed to form chemical compounds, make up all objects in the universe.

A sample of a pure element contains only the atoms that are distinctive of the that element, and each element's particles are distinct. For instance, the atoms that make up carbon differ from the ones that make up iron, that differ from those that make up gold. Every element has a distinctive symbol that is made up of one, two, or differentiates between three that either come from the element's present name or from its original (typically Latin) name.

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Answer:

[tex]F'=2\times F[/tex]

Explanation:

You swing one yo-yo around your head in a horizontal circle. The tension acting in the string is equal to the centripetal force. Its formula is given by :

[tex]F=\dfrac{mv^2}{r}[/tex]

r is the radius of circular path or the length of the string. It remains constant. If the mass of the yo- yo swing is double such that, m' = 2m

New centripetal force is equal to,

[tex]F'=\dfrac{m'v^2}{r}[/tex]

[tex]F'=\dfrac{2mv^2}{r}[/tex]

[tex]F'=2\times \dfrac{mv^2}{r}[/tex]

[tex]F'=2\times F[/tex]

So, the new tension in the strings gets doubled.

Christopher will not make any progress upstream. From the point of view of his friends standing on the riverbank, he'll remain at one point, motionless except for his furious paddling motions.

Given data:

The speed of Christopher in still water is, v = 8 km/h.

The speed of river is, u = 8 km/h.

The upstream is the motion of any object (say boat) in a river, which is in the direction opposite to the direction of flow of stream or river. And the expression for the upstream as per the given problem is,

upstream = v - u

So, on substituting the values we get,

upstream = 8 - 8

upstream = 0 km /h.

Thus, we can conclude that Christopher will not make any progress upstream. From the point of view of his friends standing on the riverbank, he'll remain at one point, motionless except for his furious paddling motions.

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Final answer:

To solve the problem, vector A and B must be broken down into their horizontal and vertical components. After summing these components, the magnitude and direction of resultant vector R can be calculated, which represents the total distance and the compass direction of the walk.

Explanation:

The student's question involves determining the resultant vector displacement and compass direction after walking two different legs with specified angles and distances. This involves understanding the concepts of vectors and trigonometry in the context of a coordinate system.

The first leg of the walk is 12.0 m at a direction 20° west of north, and the second leg is 20.0 m at a direction 40° south of west. By representing these walks as vectors A and B, we can find their resultant R by vector addition (R = A + B). Using trigonometric functions, we need to break down both A and B into their horizontal (x-axis) and vertical (y-axis) components, sum them, and then calculate the magnitude and direction of the resultant vector R, which will be the distance and compass direction from the starting point.

The angular diameter can be calculated by using the formula,

Angular diameter = 57.3 x physical diameter / distance.

The physical diameter of the sun = 1.4 x 10^6 km.

The minimum distance of Mars from Sun = 205 x 10^6 km

The minimum angular diameter of the Sun as seen from Mars is:

Angular diameter = 57.3 x physical diameter / distance = 57.3 x (1.4 x 10^6 km / 205 x 10^6 km) = 0.39 degrees.

The maximum distance of Mars from Sun = 249 x 10^6 km.

The maximum angular diameter of Sun as seen from Mars is,

Angular diameter = 57.3 x physical diameter / distance = 57.3 x (1.4 x 10^6 km / 249 x 10^6 km) = 0.32 degrees

To calculate the minimum and maximum angular diameters of the Sun as seen from Mars, use the small-angle formula using the angular diameter of the Sun and the distances to Mars and Earth.

To calculate the minimum and maximum angular diameters of the Sun as seen from Mars, we need to use the small-angle formula. The angular diameter of the Sun is about 0.5°. Mars has an average distance of 227 million kilometers from the Sun, and Earth is about 1 AU from the Sun. Using the small-angle formula, we can relate the angular diameter, the linear diameter, and the distance:

linear diameter = distance x angular diameter

For the minimum angular diameter, we use the distance from Mars to the Sun:

minimum angular diameter = 227 million km x 0.5° / 1 AU

For the maximum angular diameter, we use the distance from Earth to the Sun:

maximum angular diameter = 1 AU x 0.5° / 1 AU

By performing the calculations, the minimum angular diameter of the Sun as seen from Mars is approximately 0.96° and the maximum angular diameter is also approximately 0.5°.

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