Three charges are located at the vertices of a triangle, as shown.


Which vector best represents the net force acting on the +4 C charge in the diagram?

A) W
B) X
C) Y
D) Z

A series circuit is a closed circuit in which the current follows in only one path. In a series circuit, the current through each load is the same and the total voltage across the circuit is the sum of the voltages across each load. If one component of a series circuit becomes nonfunctional, the rest of components do not work. So the circuit A is a series circuit.

Explaining the second statement :

Each resistor in a series circuit has the same amount of current flowing through it, whereas the current flowing through each resistor in a parallel circuit is different, depending on the resistance. So we can say that when resistors are connected in parallel, more current flows from the source than flow for any of them individually, so the total resistance is lower.

Series circuit has the summation of all resistances. Therefore, Circuit A is a series circuit, and also the total resistance in Circuit A is greater than that in Circuit B.

The combination of various electrical components in a definite form, to allow the flow of electric current through it, is known as an electrical circuit.

Given data -

Carla draws two circuit diagrams that connect the same components in different ways.

A series circuit is a closed circuit in which the current follows in only one path. In a series circuit, the current through each load is the same and the total voltage across the circuit is the sum of the voltages across each load. If one component of a series circuit becomes nonfunctional, the rest of the components do not work. So circuit A is a series circuit.

The resistors in a series circuit have the same amount of current flowing through it, whereas the current flowing through each resistor in a parallel circuit is different, depending on the resistance. When resistors are connected in parallel, more current flows from the source than flow for any of them individually, so the total resistance is lower.

Thus, we can conclude that Circuit A is a series circuit, and also the total resistance in Circuit A is greater than that in Circuit B.

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b) proton

the proton is the only one of these that are in the nucleus. if you think the electron is, its not; the electrons are all outside the nucleus in the electron cloud. :)

as per the reaction we have

[tex]H_2 + O_2 ---> H_2O_2[/tex]

so here 1 mole of H2 react with 1 mole of O2 and give 1 mole of H2O2 as the product

now we will find the moles of given reactant

moles of H2

[tex]n_1 = \frac{2}{2} = 1 mole[/tex]

moles of O2

[tex]n_2 = \frac{32}{32} = 1 mole[/tex]

so here both present in 1 mole each hence the product will also formed 1 mole

so here we have

[tex]n = 1 mole[/tex] H2O2 will form

so mass of the product

mass = moles* molecular mass

[tex]m = 1 * (2 + 32)[/tex]

[tex]m = 34 g[/tex]

so the product mass will be 34 g

Initial speed of the package will be same as the speed of helicopter as it has been dropped from the helicopter.

So if we find the velocity of package relative to helicopter then it will be zero

so here we can say

[tex]v_i = v_{helicopter} = 3.1 m/s[/tex]

Now here relative velocity of the of the package will increase due to free fall in gravity and then just before if hit the ground the speed of the package will be 9.5 m/s relative to the helicopter.

so here we can say

[tex]v_{p/H} = v_p - v_H[/tex]

[tex]v_{p/H} = 9.5 m/s[/tex]

[tex]v_H = 3.1 m/s[/tex]

so here the net velocity with respect to ground will be

[tex]v_p = V_{p/H} + v_H[/tex]

[tex]v_p = 3.1 + 9.5 = 12.6 m/s[/tex]

so package will hit with speed 12.6 m/s downwards

Answer:

D. 6 to 7 s

Explanation:

When object is moving away from its reference point then its motion is known as positive motion

And when object moves towards the reference point then its motion is termed as negative motion because here the distance with respect to reference point is decreasing with time

so by the graph we can say that

object velocity is positive between

t = 0 to t = 6 s and t = 12 to t = 20 s

so in above interval of time it is moving away

while during time interval of t = 6 s to t = 7 s the motion its velocity is negative and hence it will move towards reference point

Answer:

1st box: Sedimentary rocks

2nd box:metamorphic rock

3rd box: igneous rock

Explanation:

Sedimentary rocks are rocks formed from weathered pieces of rocks (sediments)  which have accumulated over a period of time. An example of a sedimentary rock is limestone

Metamorphic rocks are rocks that have been reformed as a result of long term effects of high temperature and pressure. they can be said to ave changed or metamorphosed from their original state which could be igneous , sedimentary or even metamorphic. example is marble

igneous rocks are solidified hot molten magma which have become cooled after a period of time. An example is granite

Answer:

Maximum height reached  = 573.73 m

Explanation:

We have equation of motion, [tex]v^2=u^2+2as[/tex], where u is the initial velocity, u is the final velocity, s is the displacement and a is the acceleration.

 Here final velocity = 0 m/s at maximum height, initial velocity = 10.6 m/s, acceleration = acceleration due to gravity = [tex]-9.8m/s^2[/tex]

 Substituting

     [tex]0^2=10.6^2-2*9.8*s\\ \\ s=5.73 m[/tex]

 So camera travels 5.73 m above after falling from blimp.

 Maximum height reached = Initial height + 5.73 = 568+5.73 = 573.73 m

C) E= kq/d^2

Hoped this helped

Answer:

The correct answer option is C. E = kq / d^2

Explanation:

Electric field strength is a vector quantity which means it has both the magnitude and a direction.

It can be defined as the strength of electrical force per unit charge at any given point in the electric field and can be denoted by E.

Therefore, the formula for the electric field strength is:

E = [tex]\frac{k .Q }{d^2} [/tex]

Here's something I'll bet you never thought about before:

A function is called "linear" if it makes a straight line when you graph it.

There are three different functions on the graph you provided.  The only one of them that's a "linear" function is line B .

The force is much less when bunting into the in field.

Answer:

The force is much less!

Explanation:

Answer: option D. the ratio of the population of male deer is not constant.

Explanation:

The bar graph permits to compare the results for two different populations: male and female deer in a very easy visual way.

These features are remarkable:

        This discards the option A, which states that the population of male deer increases each decade from 1961 to 2011.

        This discards the option B. which states that when the polulation of male deer increases, the poluplation of female deer also increases.

Answer:

The answer is D

Explanation:

I got it right

Answer: Option A: The spots on the balloon move away as the balloon is inflated.

one of the scientific models describes the galaxies are moving apart as the universe is expanding. This expansion theory came from the observation of red-shifted spectrum from all the directions indicating that the galaxies are moving away.  This can be understood from the inflated balloon. Initially spots can be marked using a colored pen on the balloon.On inflating the balloon, it would be noticed that the spots on the balloon move away. Actually the position of the spots won't change, but the distance between the spots would expand. This is a good model to explain the expanding universe. The galaxies are neither moving in any random direction nor moving forward. So, rest of the options are not good models to explain the theory.

Answer:

Option A is the correct answer.

Explanation:

The instantaneous acceleration = Change in velocity in velocity/Time taken

The slope of the graph should give instantaneous acceleration.

  Slope of a graph = Change in value of Y -axis / Change in values of X -axis

 Comparing both the equations

   Change in value of Y -axis = Change in velocity in velocity

   Change in values of X -axis = Time taken

So velocity values should be on the Y axis and Time values should be on the X axis.

Option A is the correct answer.

A) Velocity on the y-axis, time on the x-axis

Time of impact: [tex]\(0.0217\)[/tex] seconds, calculated using impulse-momentum theorem with force [tex]\(460 \, \text{N}\) and mass \(0.25 \, \text{kg}\)[/tex].

To find the time of impact, we can use the impulse-momentum theorem, which states that the impulse experienced by an object is equal to the change in momentum of the object. Mathematically, it can be expressed as:

[tex]\[ J = \Delta p \][/tex]

Where:

- [tex]\( J \)[/tex] is the impulse

- [tex]\( \Delta p \)[/tex] is the change in momentum

The impulse [tex](\( J \))[/tex] can be calculated using the force [tex](\( F \))[/tex] and time [tex](\( \Delta t \))[/tex] of impact:

[tex]\[ J = F \cdot \Delta t \][/tex]

Given that the force [tex](\( F \))[/tex] is 460 N, we can rearrange the equation to solve for the time ([tex]\( \Delta t \)[/tex]):

[tex]\[ \Delta t = \frac{J}{F} \][/tex]

The change in momentum ([tex]\( \Delta p \)[/tex]) can be calculated using the mass [tex](\( m \))[/tex] and the final velocity (\( v_f \)) of the ball:

[tex]\[ \Delta p = m \cdot v_f \][/tex]

Given that the mass [tex](\( m \))[/tex] is 0.25 kg and the final velocity [tex](\( v_f \))[/tex] is 40 m/s, we can substitute these values into the equation to find the change in momentum.

Once we have both the impulse [tex](\( J \))[/tex] and the change in momentum [tex](\( \Delta p \))[/tex], we can solve for the time of impact [tex](\( \Delta t \))[/tex].

Let's calculate:

[tex]\[ \Delta p = m \cdot v_f = 0.25 \, \text{kg} \times 40 \, \text{m/s} = 10 \, \text{kg} \cdot \text{m/s} \][/tex]

[tex]\[ \Delta t = \frac{J}{F} = \frac{10 \, \text{kg} \cdot \text{m/s}}{460 \, \text{N}} \][/tex]

[tex]\[ \Delta t = \frac{10}{460} \, \text{s} \][/tex]

[tex]\[ \Delta t[/tex] ≈ [tex]0.0217 \, \text{s}[/tex]

So, the time of impact for this event is approximately [tex]\( 0.0217 \)[/tex] seconds.

A C) closed circuit is a continuous loop that allows the flow of current along its intended path.

A continuous loop that allows the flow of current along its intended path is closed circuit. The correct option is C.

A circuit consists of a voltage source along with resistors and the current flows from  positive to the negative terminal of the battery.

When the circuit is open , there will be no current flowing in the circuit, but if closed, there will be continuous flow of current.

Thus, the correct option is C.

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Description:

It often has molten appearance due to its heterogeneous composition.

Rock or mineral:

It is a rock.

Mineral has a unique specific makeup and always has the same composition.

So it is rock due to heterogeneous composition.

Description:

Atoms in all specimens have the same structure and shape.

Rock or mineral:

It is Mineral.

Mineral has a unique specific makeup and always has the same composition.

Description:

It is generally found in crystalline form.

Rock or mineral:

It is a mineral.

Description:

Every specimen varies in terms of atomic structure.

Rock or mineral:

It is a rock.

A rock is a solid, inorganic, naturally-formed substance without a particular atomic structure or chemical composition.

4 Kilometers, North, would be the answer.

gravity is the correct answer.

In two-dimensional motion that is not projectile motion, the object may experience acceleration due to various forces acting on it. Projectile motion is a specific case where the only significant force acting on the object is the force of gravity, resulting in a distinct motion trajectory.

Projectile motion refers to a specific type of two-dimensional motion in which an object is launched into the air and moves under the influence of gravity alone, experiencing no forces other than gravity. In this case, the object's motion is characterized by a constant horizontal velocity and a vertical acceleration due to gravity.

However, in other two-dimensional motions where the object is not a projectile, there may be other forces acting on it, causing it to accelerate in various directions. Some examples of forces that can cause acceleration in two-dimensional motion include:

Applied Forces: If an external force is applied to the object, it will accelerate in the direction of that force. For example, pushing a box across the floor or throwing a ball horizontally.

Frictional Forces: Friction opposes the relative motion between two surfaces in contact. It can cause acceleration in the opposite direction to the motion, reducing the object's speed.

Tension: In systems with ropes or strings, tension can cause an object to accelerate in the direction of the net force.

Electrostatic Forces: If the object carries an electric charge and is in the vicinity of other charged objects, electrostatic forces may cause it to accelerate.

Magnetic Forces: If the object is influenced by magnetic fields, magnetic forces can cause it to accelerate in specific directions.

Spring Forces: In systems involving springs, the compression or stretching of the spring can cause acceleration in the object attached to it.

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Purple finches, chickadees,cardinals,blue jays,woodpeckers,red polls,juncos,goldfinches,and red crossbills.

Meter is standard unit for measurement of length. Larger unit used for measurement of length is Kilometer.

Since,

1 Kilometer= 1000 meter

or

1 meter = 1/1000 Kilometer

therefore,

35 meter = 35/1000 Kilometer

35 meter = 0.035 Kilometer

35 m is equivalent to 0.035 km.

35 meters is equivalent to 0.035 kilometers, which is found by dividing the number of meters by 1000.

To convert meters to kilometers, you need to know the basic conversion rate: 1 kilometer (km) is equivalent to 1000 meters (m). Therefore, to convert meters to kilometers, you divide the number of meters by 1000.

35 meters is equivalent to 0.035 kilometers because:

35 m / 1000 = 0.035 km

None of the other options (35000 km, 35000 km, 0.0035 km) are correct. The correct conversion is to simply divide the number of meters by 1000 to get the kilometers.

Answer:

Northeast

Explanation:

Let magnitude of the force acting along north and east be F.

One worker pushes it toward north and another pushes it along east with same magnitude.

According to law of parallelogram the Resultant force has direction along northeast as shown in the figure.

We can use the kinematics equation

v1^2-v0^2=2as

where v1=final velocity = 0 m/s

v0=initial velocity = 24 m/s

a=acceleration = to be determined

S=distance travelled during acceleration = 225 m

=>

a=(v1^2-v0^2)/(2S)

=(0^2-24^2)/(2*225)

=-576/450

=-1.28 m/s^2

So van is decelerating at 1.28 m/s^2

The frictional force is therefore

F = ma = 1400 kg * 1.28 m/s^2 = 1792 N

The force of friction acting on the 1400 kg van, which comes to a stop after 225 meters, is calculated using the work-energy principle and is found to be 1792 Newtons.

Finding the Force of Friction Acting on the Van

To determine the force of friction acting on a van that rolls to a stop after the driver takes her foot off the gas pedal, we need to apply the principles of kinetic energy and work done. The work done by friction is equal to the change in kinetic energy of the van as it comes to a stop. Since the van starts at a speed (v) of 24 m/s and ends at 0 m/s, the initial kinetic energy ([tex]KE_i[/tex]) is

[tex]KE_i = 1/2 mv^2[/tex]

where m is the mass of the van (1400 kg). The work done by friction (W) equals the force of friction (f) multiplied by the distance (d) over which it acts, hence W = fd. Work done by friction is also equal to the change in kinetic energy:

[tex]W = KE_i - KE_f[/tex]

Because the van stops, [tex]KE_f[/tex] (final kinetic energy) is 0, and the work done by friction will equal the initial kinetic energy. We can calculate the force of friction now that we know the work done and the distance:

f = [tex]KE_i[/tex] / d

Using the given values:

[tex]KE_i[/tex] = 1/2 (1400 kg)(24 m/s)² = 403200 J

So the force of friction (f) can be calculated as:

f = 403200 J / 225 m = 1792 N

The force of friction acting on the van is therefore 1792 N.

The path followed by a projectile is called its trajectory. (C)

In the most common school situation ... with gravity but without air resistance, the trajectory of a projectile is the shape of an inverted parabola (nose  pointing up).  That's the result of constant horizontal velocity and accelerated vertical velocity.

Answer:

Trajectory

Explanation:

Trajectory is the path followed or traced by a projectile.

It follows a parabola shape. That is the shape got in javeline.

Answer:

The moon’s axis does not always align with Earth’s shadow.

Explanation:

The lunar eclipse happens when the Earth comes between the moon and the Sun, blocking the light falling on the moon. It occurs on a full moon. On the other hand, a solar eclipse occurs when the moon comes between the Earth and the Sun, blocking the sunlight falling on Earth. It occurs on new moon day. For each to occur, the three bodies must be aligned in straight line. As the orbital plane of the moon is not exactly aligned to that of the Earth, the eclipses do not occur every month.

The reason why lunar and solar eclipses do not happen every month is because: D. The moon’s axis does not always align with Earth’s shadow.

An eclipse is simply an astronomical phenomenon (event) that usually takes place when a celestial body such as a Moon in space moves in between the Sun and another celestial body such as planet Earth, usually causing the total or partial blockage or obscuration of light to the celestial body.

Based on space exploration and science, there are two (2) main types of eclipse;

I. Lunar eclipse: it is an astronomical phenomenon (event) that occurs when planet Earth gets between the Moon and the Sun, thereby causing it to cover or obscure the Moon with its shadow.

II. Solar eclipse: this is an astronomical phenomenon (event) that typically occurs when the Sun is obscured or blocked by the Moon, thereby engulfing a portion of planet Earth.

However, these astronomical phenomenon (lunar and solar eclipses) do not happen every month because the axis of the Moon is tilted five (5) degrees and as such doesn't always align with Earth’s shadow.

In conclusion, without this tilt of the Moon from Earth's orbit around the Sun, lunar and solar eclipses would happen every month.

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