The diagram shows the set-up for an electric doorbell. At bottom, a doorbell. Starting from midright, a wire attached to a contact screw runs to a power source and then to a bell and then to coil around both arms of a U shaped iron core. The coils plus core is labeled electromagnet with the lower arm of the core labeled N and the upper arm labeled S. The wire emerges from the coils to attach to a steel bar at its top end. The bottom end of the steel bar has a short piece of wire leading to a striker. Which best explains why the bell would not ring in this set-up? The circuit is open. The electromagnet has an iron core. The circuit is closed. The electromagnet is made of steel.

Answer:

the resistance force is mg cos(-)

Explanation:

The resistance force on an inclined plane is generated by a portion of the object's weight acting downward along the plane and the counteracting frictional force. It opposes your upward movement. The total force exerted walking up an incline is less than lifting the same weight vertically, which explains why it's easier to walk uphill than climb a ladder of the same height.

When you walk up an inclined plane, you encounter two forces due to gravity: a force acting perpendicular to the plane and a force acting parallel to the plane. The perpendicular force is typically equal in magnitude and opposite in direction to the normal force. The force acting parallel to the plane leads the object to accelerate down the incline. This is the resistance force you experience when moving up. It's composed of a part of the weight (W) inclined downward along the plane and the opposing frictional force (f). Specifically, if the incline is at an angle Θ, the resistance force, W_parallel, can be expressed as W_parallel = mg sin(Θ), where m is mass and g is the force of gravity, and the kinetic friction, f_k, can be expressed as: f_k = μ_k mg cos(Θ).

However, when walking, you work against the resistance to move forward, and hence, the net force is not zero. As a result, climbing an inclined plane is less strenuous than climbing directly upwards, though it demands work over a greater distance.

https://brainly.com/question/22875570

#SPJ5

Answer:

two opposite poles

Explanation:

Final answer:

The amplitude of a wave is half the height from peak to trough, so a 2 m crest above still water has an amplitude of 1 m. A seagull bobbing every 2 seconds between 3 m apart crests experiences a wave velocity of 1.5 m/s. A boat hit by a 2 m high wave peak will change elevation by 2 m.

Explanation:

The question provided is related to the physics of waves, specifically their propagation, amplitude, frequency, and wavelength. When discussing a wave crest measuring 2 m above the still water mark, the amplitude of the wave is actually 1 m, as the amplitude corresponds to the maximum displacement from the equilibrium (still water level) to the peak of the wave, which would be half of the peak-to-trough height.

Therefore, if a wave's crest is 2 m above the still water mark, and assuming the trough is the same distance below, the amplitude is 1 m.

Similarly, for a seagull bobbing up and down on the water's surface, if it does so once every two seconds and the distance between two crests of the water wave is 3 m, the velocity of the wave would be 1.5 m/s (wavelength divided by the period: 3 m / 2 s = 1.5 m/s).

Regarding a boat that bobs up and down due to wave action, if the height of the wave is 2 m, the boat's height will change by 2 m when hit by the peak of the wave, considering the change from the equilibrium position to the peak.

Answer:

The answer is 4.55 m/s!

Explanation:

I wish you luck with Acellus! We got 15 days left!

Please mark brainliest.

The speed of the car will be approximately 9.14 meters per second.

To find the speed of the car, we can use the Doppler effect equation for frequency shift:

Δf/f₀ = v/c

where:

Δf = frequency shift (638 Hz lower in this case)

f₀ = original frequency emitted by the speed gun (2.10x10¹⁰ Hz)

v = velocity of the car

c = speed of light in a vacuum (approximately 3.00x10⁸ m/s)

We need to rearrange the equation to solve for the velocity (v) of the car:

v = Δf/f₀ × c

Now, let's plug in the values:

Δf = 638 Hz

f₀ = 2.10x10¹⁰ Hz

c = 3.00x10⁸ m/s

v = 638 Hz / 2.10x10¹⁰ Hz × 3.00x10⁸ m/s

Calculate the value:

v ≈ 9.14 m/s

So, the speed of the car is approximately 9.14 meters per second.

To know more about speed here

https://brainly.com/question/28224010

#SPJ2

Answer:

c

Explanation:

Answer:

looks nice, it must of taken months of practice! Great job!

Answer:

A chemical energy

Explanation:

This is the answer

The controversy over genetic differences in intelligence primarily relates to the misuse of genetic arguments for racial discrimination and the oversight of environmental influences on intelligence.

The study of genetic differences in intelligence has been controversial due to several factors. The primary concern arises from the historical use of genetic arguments to justify racial discrimination. These views, although scientifically refuted, have at times resurged, as in the case of 'The Bell Curve'. Notably, the controversy arises from interpretations that link genetics and race with intelligence without accounting for the significant influence of environmental variables. Additionally, research has shown a closing of IQ gaps with increased access to education, pointing to nurture's critical role in intelligence development. The persistence of the idea that intelligence could be predetermined by race without adequate consideration of environment and socioeconomic factors contributes to the ongoing debate.

Moreover, there is a recognition that intelligence is affected both by genetics and environment, with environmental influences shaping the manifestation of cognitive abilities. Twin studies show a genetic component to intelligence, but conflict theorists note that IQ tests can be biased and do not always offer a fair assessment of a person's intellectual capabilities, reinforcing the complex interplay of genetics, environment, and social factors in the development of intelligence.

Answer:

Explanation:

A conductor's voltage determines how fast electric charges pass through it. In a circuit, electrons move around due to voltage. If there is no voltage, electrons can move in any direction.

Voltage is the correct answer.

I hope this helps you! Please let me know if my answer is wrong.

Answer:

OT

It is important to wear protective equipments during games and practices.

Explanation:

Practice is a review of what is about to happen in some time to come and with practice ,the future can be trusted.

During practice it is very important to use protective gears or equipments because without them, injuries and accidents are liable to occur.

During the major game it is also important to prevent accidents or big injuries as the equipments protect each vital part of the body.

Answer:

The answer is True

Explanation:

Hope this helps you

KE : 1/2mv^2

KE: 1/2 x 70(2^2)

KE: 1/2 x 70 x 4

= 1/2 x 280

280 x 1/2 = 140

Therefore, the man's kinetic energy is 140J.

Both devices would require the same amount of force. Therefore, the correct option is option C among all the given options.

A force in physics is an effect that changes the velocity of a mass-moving object, causing it to accelerate from rest, for example. It is a vector quantity since it can be a push or perhaps a pull and always has magnitude and direction. It is denoted by the letter F and is measured in newtons (N), the SI unit of force (formerly P).

The net force exerted on an object approximately equal to the rate where its momentum varies over time, according to Newton's second law in its original formulation. Both devices would require the same amount of force.

Therefore, the correct option is option C among all the given options.

To know more about force, here:

https://brainly.com/question/13014979

#SPJ6

Final answer:

Without specific sizes of the wheel and axle radii, it's not possible to determine which wheel and axle would require less force to drag a load; hence, the answer is 'Not enough information'.(Option D)

Explanation:

The student asked which wheel and axle would allow a load of rocks to be dragged with less force. To answer this question, it's important to understand that a wheel and axle is a form of lever that can rotate around the center of the axle. The mechanical advantage of such a device is calculated by dividing the radius of the wheel by the radius of the axle.

Without specific measurements of the wheel and axle radii provided for Option A and B, it is not possible to determine which wheel and axle configuration would require less force to drag a load of rocks. Thus, the correct answer to the question would be D. Not enough information.

Answer:

A. Bar Graph

Explanation:

It is easier to see the data.

We would use A)Bar graph to show our results.

A bar graph can be described as a chart or a graphical representation of data, portions, or numbers the usage of bars or strips. Bar graphs are used to compare and evaluate numbers, frequencies, or different measures of wonderful categories of statistics.

Learn more about Bar graphs here: https://brainly.com/question/24741444

#SPJ2

Answer:

Chemical energy

Explanation:

Answer:

Chemical Energy

Explanation:

Answer:

C. reflection of the wave with the same wave speed

Answer:

Final momentum after a head on collision is -2kgm/s

Explanation:

         One ball moves to the right and the other moves opposite  and momentum is a vector quantity so that considering the direction

Initial momenta are        P₁=2x3=6kgm/s        P₂=4x(-2)=-8kgm/s      

Final momentum is the vector sum of P(final)= 6-8= -2 kgm/s

The final momentum after a head-on collision is -2kg-m/s if the 2.0-kg ball rolls to the right at 3.0 m/s. A 4.0-kg ball rolls to the left at 2.0 m/s.

A tangible body's mass is the amount of matter it possesses. It's also a metric of inertia or the resistance to velocity when a net force is exerted.

It is given that:

A 2.0-kg ball rolls to the right at 3.0 m/s. A 4.0-kg ball rolls to the left at 2.0 m/s.

As we know,

Momentum = mass×velcoity

Given that momentum is a vector number and that one ball goes to the right while the other moves in the opposite direction

Initial momenta:        

P = 2×3

P = 6 kg-m/s        

p = 4×(-2)

p = -8 kg-m/s      

Final momentum = The vector sum of P(final)

= 6 - 8

= -2 kg-m/s

Thus, the final momentum after a head-on collision is -2kg-m/s if the 2.0-kg ball rolls to the right at 3.0 m/s. A 4.0-kg ball rolls to the left at 2.0 m/s.

Learn more about the mass here:

https://brainly.com/question/15959704

#SPJ6

Answer:

A

Explanation:

Answer:

Water flows through this type of soil.

Explanation:

By definition permeable soil is soil which water and other fluid flow easily through (like sand) If a plant needs drainage the soil will need to flow through the soil easily.

Answer:

Supersaturated Solution (im not sure what your question was but if you're looking for the term of the definition then it should be supersaturated solution)

Explanation:

To find the charge q1, set up equations for the electric fields created by each charge and solve them simultaneously. The value of q1 is -150 nC.

To find the charge q1, we need to consider the electric field created by each of the three charges separately. Since the total electric field at the origin is zero, the electric fields from charges Q, q1, and q2 must sum up to zero.

We can use the formula for the electric field due to a point charge, which is given by E = k * Q / r^2, where k is the electrostatic constant, Q is the charge, and r is the distance from the charge to the point of interest. By setting up equations for the electric fields from each charge and solving them simultaneously, we can find the value of q1.

After solving the equations, we find that the charge q1 is equal to -150 nC.

https://brainly.com/question/31366250

#SPJ2

Answer:

A solution

Explanation:

Sugar (solute) is soluble in water and would dissolve into the water (the solvent) to form a solution.

Answer: all except 3, 5, and 6

Explanation: these 3 options are all positive effects. fewer extinctions would mean fewer loss of animal life, and a decrease in mining and water pollution would be less harmful to the environment

it’s all of them but not 3,5, and 6.

Answer:

It is option A because girl notices that it is matter of food which depends.

Explanation:

Answer: Your answer would be C

Explanation: None of the traps work with peanut butter, the next step is to test each type of trap individually with different foods. Hope this helps :)

Answer:

Power, P = 30 W

Explanation:

We have,

Voltage drop of a circuit is 60 V

Resistance of the resistor is 120 ohms

Current across the circuit is 0.5 A

It is required to find the power conducted by the resistor. Power conducted by a resistor is given by :

[tex]P=VI[/tex]

V and I are voltage and current

[tex]P=60\times 0.5\\\\P=30\ W[/tex]

So, the power conducted by the resistor is 30 watts.

Answer:

D.  30.0 W

Explanation:

Quiz Taken

Answer:

Electrical

Explanation:

She uses a battery, which is electrical.

It doesn't operate using chemicals, heat, or light

Answer:

it's chemical and electrical because she uses her circuit in which the both forms take place...........so according to me the most probably the answer is electrical.....

Explanation:

because she uses her circuit in which the both forms take place...........so according to me the most probably the answer is electrical.....

Answer:

the answer is when heat gets transfered through objects  that are touching when the measurement of heat in the yeans

Explanation:

The Option that explains the process of radiation is :  ( C ) when heat gets transferred through electromagnetic waves that move through space

Radiation is the transfer of energy through space in the form of electromagnetic waves or as subatomic particles. Energies transferred during radiation move at the speed of light.

During conduction and convection heat gets transferred through objects that touch each other while during radiation the objects do not have to be in contact for energy to be transferred.

Hence we can conclude that The Option that explains the process of radiation is when heat gets transferred through electromagnetic waves that move through space

Learn more about radiation : https://brainly.com/question/18338019

Answer:

The angle the light ray makes as it strikes the surface.

Explanation:

When describing image formation in lenses, the angle of incidence is the angle the light ray makes as it leaves the surface.

The angle with which the light ray is falling on the surface, measured from the horizontal s called the angle of incidence.

Thus, when describing image formation in lenses, the angle of incidence is the angle the light ray makes as it leaves the surface.

Learn more about angle of incidence.

https://brainly.com/question/13200721

#SPJ2

Answer:

80Ω

Explanation:

Resistance in a series circuit (when one resistor is after another in the same line) is calculated with the following equation

Total resistance = R1 + R2 + R3...Rn

Substitute in your values and solve for total resistance

Total resistance = 60 + 20 = 80Ω

Answer:

80

Explanation:

Answer: C

Explanation: