which of the following best defines unbalanced forces? A. Forces that act in opposite directions and cancel each other out B. Unequal forces that do not cancel out but cause a change in motion c. Foroes between two objects in physical contact D. The total force on an object after individual forces are added togethe​

Answer:

A

Explanation:

They drove 30km north. The displacement adds up to 25km therefore making the distance greater

Hope this helps!

In an experiment using charged rods, one in a cradle and the other held close to the tip of the cradled rod, the physics model that governs the interaction between the rods is Coulomb's Law. Coulomb's Law states that the force between two charged objects is directly proportional to the product of their charges and inversely proportional to the square of the distance between them.

When the rods have the same charge (both positive or both negative), the force between them will be repulsive, causing the cradled rod to move away from the held rod. This is because like charges repel each other.

When the rods have different charges (one positive and one negative), the force between them will be attractive, causing the cradled rod to move towards the held rod. This is because opposite charges attract each other.

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Answer:

true

Explanation:

Answer:

No.

Explanation:

Para darnos cuenta de esto tenemos que pensar en lo siguiente:

Pensemos en un vaso de vidrio, lleno de agua hasta la mitad, la otra mitad puede ser manteca derretida

Si metemos el vaso en la heladera durante un par de horas, (sabemos que la manteca en la heladera se mantiene sólida) veremos que la manteca se solidificó en la parte de arriba, mientras que el agua sigue líquida.

Entonces encontramos dos compuestos con distintas temperaturas para cambio de fase, pero materiales es más específico, y puede referirse a materiales puros.

Entonces vamos a dos metales:

Primero tenemos una pieza de hierro y una de mercurio en el congelador (supongamos que ambas están a 0°C).

Ahora los sacamos del congelador y los dejamos llegar a temperatura ambiente.

Como bien sabemos, el mercurio es líquido a temperatura ambiente, entonces el mercurio va a sufrir un cambio de fase

Ahora pensemos en el hierro; claramente va a seguir siendo sólido a temperatura ambiente, entonces podemos ver dos materiales cuyo cambio de fase de sólido a líquido ocurre en distintas temperaturas, por lo que podemos concluir que no, la temperatura de cambio de estado no puede ser igual para todos los materiales, y esto se debe a que la estructura atómica de todos los materiales es diferente.

Answer:

O Writing a rough draft

Explanation:

Thats the second step after generating ideas and choosing.

PLEASE GIVE BRAINLIEST THANK YOU!!!

Answer:

D. All of the above

Explanation:

YES

From the given options, Iron, sodium, and calcium are metals. (option d)

A. Iron (Fe): Iron is a metal. It is one of the most abundant elements on Earth and is widely used in construction, manufacturing, and various industries due to its strength and durability. Iron is an excellent conductor of electricity, which makes it essential for electrical applications.

B. Sodium (Na): Sodium is also a metal. It is a highly reactive metal and is commonly found in compounds like sodium chloride (table salt). Sodium is an essential element for living organisms and plays a crucial role in various biological processes.

C. Calcium (Ca): Calcium is a metal. It is an important element for the human body, as it is a major component of bones and teeth. Calcium is also involved in muscle contraction, nerve function, and blood clotting. Moreover, it is used in the production of alloys and as a deoxidizer in metallurgy.

D. All of these: The correct answer is D. All of the options (iron, sodium, and calcium) are metals. They exhibit typical metallic properties such as high electrical and thermal conductivity, metallic luster, and malleability.

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Answer:

Light splits up into different colors because of the electromagnetic spectrum which makes the light bend, wavelength, and it makes different colors by it :3

Explanation:

:3

Solution :

It is given that JeLysa Hanson went for a medical examination complaining shortness of breath and tightness in her chest. After the medical examination, she was diagnosed of a musculoskeletal pain that was due to the overexertion while practicing her new hobby of boxing.

Therefore the codes of her examinations are :

ICD Code :

\($R06.02$\) = shortness of breath

\($R07.89$\) = chest pain or chest tightness

\($M79.1$\) = musculoskeletal pain

\($X50.3XXS$\) = overexertion due to the repetitive body movement

Answer:

False

True

False

True

False

True

Explanation:

40V is needed to push 2 amperes of current through 20 ohms of resistance.

what is ohm's law?

It states that the current through a conductor between two points is directly proportional to the voltage across the two points.

V=I×R

Current equals Voltage divided by Resistance (I=V/R), Resistance equals Voltage divided by Current (R=V/I), and Voltage equals Current times Resistance (V=IR).

Given:

R=20Ω

I= 2amp

we know that,

V=I×R

V=2×20

V=40V

Thus,the voltage comes out to be 40V.

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Answer:

Greenhouse gases include carbon dioxide, methane, nitrous oxide and other gases that accumulate in the atmosphere and create the heat-reflective layer that keeps the Earth at a livable temperature. These gases form the insulation that keeps the planet warm enough to support life.

Answer:

0 N

Explanation:

suppose, you push a box with 5 N, and another person pushes the box on the opposite side of the box with 5 N, the net force (resultant ) is 0 N, the box will not move if it wasn't moving

hope this helps

Answer:

a person walking on a flat side walk

Explanation:

hope this helped :)

Option B; In a mechanical wave, the restoring force is the force that actually causes the oscillation opposite the direction of the displacement from equilibrium.

Oscillation is the repeating or periodic oscillation of a quantity, often in time, around a central value (often an equilibrium point) or between two or more states. A swinging pendulum and alternating current are two common examples of oscillation. Physics can employ oscillations to simulate intricate interactions, as those between atoms.

The beating of the human heart (for circulation), business cycles in economics, predator-prey population cycles in ecology, geothermal geysers in geology, the vibration of the strings in guitars and other string instruments, the periodic firing of nerve cells in the brain, and the periodic swelling of Cepheid variable stars in astronomy are just a few examples of the dynamic systems that exhibit oscillations in nearly every branch of science.

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Answer: Conductor, semiconductor, insulator

Explanation:

Just did the quiz

The correct option is option A.

The descending order in which electrons flow easily is:

Conductor, semiconductor, insulator

The correct order for materials by their ability to allow the flow of electrons, from most easily to least easily is Conductor, semiconductor, insulator.

Conductors are generally metals, they have plenty of free electrons due to which the electron flow is easy. Also, the conduction band and valance band in a conductor overlap, so they can conduct at room temperature.

In the case of semiconductors, the band gap between the conduction band and valance band is almost 1eV, so a little energy is enough to make the flow of electrons possible

Whereas, in insulators, the band gap is quite high and electrons can not jump from the conduction band to the valence band due to which the flow of electrons is not possible.

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Answer: The Coriolis effect results in bending the direction of surface currents to the right in the Northern Hemisphere and left in the Southern Hemisphere. The Coriolis effect causes winds and currents to form the circular patterns. The direction in which they spin depends upon the hemisphere in which they are present.Coriolis Effect is named after the French mathematician and physicist Gaspard-Gustave de Coriolis. It affects the weather patterns of an area, it affects the ocean currents, and it also affects air quality.

Two factors. The independent variable is the light colour and the dependent variable is the mood. The ambient colour is not a factor as it is being controlled in each room.

A within-subjects experiment is used to assess the effect of light colour on mood. The experiment has a single light bulb with three different ambient colour schemes. The experiment features three rooms each with a different light bulb, there are factors in this experiment.
In this within-subjects experiment designed to assess the effect of light colour on mood, there is 1 factor being manipulated, which is the ambient colour of the light bulb.

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Answer:

A pair of scales

Explanation:

Answer:

true

Explanation:

as long as you are interested, you are happy

Since lifetime activities are done for a lifetime, it is true that a well chosen lifetime activity is something that should hold a person's interest for a long time.

A lifetime activity is an activity which an individual decides to do for a lifetime.

A lifetime activity should be able to hold a person's interest for a long time, else it could lead to frustration.

Some lifetime activities include:

Therefore, it is true that a well chosen lifetime activity is something that should hold a person's interest for a long time.

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The question is incomplete as it does not have the options which are:

deciduous forest

taiga (boreal forest)

temperate rainforest

tropical rainforest

Answer:

Taiga (boreal forest)

Explanation:

A Biome refers to the habitat which is occupied by flora and fauna living in similar conditions.  These biomes are distinguished based on many features like precipitation, temperature and many other physical factors.

In the given question, the biome which receives an annual rainfall of 35 to 100 cm annually and is mostly covered by the coniferous trees is known as "Taiga biome" which is also known as Boreal forest.

The Taiga biome is one of the largest terrestrial biomes which is present in Eurasia and North America. The biome is characterised by the conifers trees and therefore is also known as the Coniferous trees.

Thus, Taiga (boreal forest) is the correct answer.

Answer: Taiga(boreal forest)

Explanation:

Answer:

It is because of the blood pressure balances with our atmospheric pressure

When calculating a rectangle's area, we should multiply the length by breadth of the rectangle. 0.625 cm2 is the area of rectangle.

The measurement of a form's surface is the form's area. Multiplying the length and width of a rectangle gives the area of the shape. A is equivalent to x + y. The area (A) of a rectangle is calculated as the sum of its length (a) and breadth (b). Area of Rectangle thus equals (a b) square unit.

given data -

length = 2.5 cm

breadth = 0.25 cm

Area = length × breadth

Area = 2.5 cm × 0.25 cm

Area = 0.625 cm²

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The magnitude of the force p that is perpendicular to other force q and makes an angle of 30° with the resultant force of 50 N, is 43.30 N.

Since the two forces p and q are perpendicular to each other, they form a right triangle with the resultant force (see the picture below).

We can calculate the magnitude of the force p with the following trigonometric function:    

\( cos(\theta) = \frac{p}{F} \)

Where:        

F: is the magnitude of the resultant force = 50 N

p: is the magnitude of the force p =?

θ: is the angle between p and F = 30°

Hence, the magnitude of p is:

\( p = cos(\theta)*F = cos(30)*50 N = 43.30 N \)

Therefore, the magnitude of p is 43.30 N.          

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Answer:

23 grams

Explanation:

The atomic weight of sodium (Na) is approximately 23. Therefore, one mole of sodium atoms weighs approximately 23 grams.

Answer:

Distance = 36 meters

Explanation:

Given the following data;

Work done = 2,340,000 Joules

Force = 65,000 Newton

To find the distance covered by the crane;

Mathematically, work done is given by the formula;

\( Workdone = force * distance\)

Substituting into the formula, we have;

\( 2340000 = 65000 * distance \)

\( Distance = \frac{2340000}{65000}\)

Distance = 36 meters

Answer:

The 5-number summary is

1. Median = 0.93 W/kg

2. Lower quartile = 0.69 W/kg

3. Upper quartile = 1.16 W/kg

4. Minimum value = 0.54 W/kg

5. Maximum value = 1.42 W/kg

Explanation:

We are given the measured radiation absorption rates​ (in W/kg) corresponding to 11 cell phones.

1.16 0.85 0.69 0.75 0.95 0.93 1.18 1.17 1.42 0.54 0.57

What is 5-number summary?

A 5-number summary refers to a box plot that basically shows 5 statistical characteristics of a data set.

These statistical characteristics are:    

1. Median

2. Lower quartile

3. Upper quartile  

4. Minimum value  

5. Maximum value  

1. Median:

Arrange the data in ascending order

0.54 0.57 0.69 0.75 0.85 0.93 0.95 1.16 1.17 1.18 1.42

(n+1)/2 gives the median value of the data set.

(11 + 1)/2 = 6th position

Therefore, 0.93 W/kg is the median of the data set.

2. Lower quartile:

Divide the data set into two equal halfs (include median in both if n = odd)

Lower half = 0.54 0.57 0.69 0.75 0.85 0.93

Upper half = 0.93 0.95 1.16 1.17 1.18 1.42

The lower quartile is the median of the lower half of the data set.

Lower half = 0.54 0.57 0.69 0.75 0.85 0.93

The median is 6/2 = 3rd position

Therefore, the lower quartile of the data set is 0.69 W/kg

3. Upper quartile:

Divide the data set into two equal halfs (include median in both if n = odd)

Lower half = 0.54 0.57 0.69 0.75 0.85 0.93

Upper half = 0.93 0.95 1.16 1.17 1.18 1.42

The upper quartile is the median of the lower half of the data set.

Upper half = 0.93 0.95 1.16 1.17 1.18 1.42

The median is 6/2 = 3rd position

Therefore, the upper quartile of the data set is 1.16 W/kg

4. Minimum value:

The minimum value is the least value in the data set.

0.54 0.57 0.69 0.75 0.85 0.93 0.95 1.16 1.17 1.18 1.42

Therefore, the minimum value of the data set is 0.54 W/kg

5. Maximum value  

The maximum value is the least value in the data set.

0.54 0.57 0.69 0.75 0.85 0.93 0.95 1.16 1.17 1.18 1.42

Therefore, the maximum value of the data set is 1.42 W/kg

The box plot is illustrated in the attached diagram.

Napagyayaman ang kaalaman sa parabula bilang akdang pampanitikan?

→ Ang parabula ay mahalagang maunawaan at mapahalagahan bilang akdang pampanitikan sapagkat ito ay mga salita ni Hesus na kanyang ginamit upang maiparating sa mga tao ang mensahe ng Ama para sa kaligtasan ng mga makasalanan. Hindi lang ito malaking parte ng akdang pampanitikan ngunit pati na rin sa Katolikong paniniwala at pananampalataya.

Nakabubuo ng sariling konsepto tungkol sa parabula at sa layunin nito sa mambabasa.

→ Ito ay tumutukoy sa isang kwento na Kong saan ay tao ang gumaganap at into at patungkol sa bibliya

When a human body is airborne, the center of gravity follows a parabolic flight path, the movement of the arms and legs does not influence the flight path of the center of gravity directly, all of the above statements are true.

a. The body's center of gravity follows a parabolic flight path:
When a person is airborne, their body's center of gravity follows a parabolic flight path due to the influence of gravity. This is because the body moves in a curved trajectory, similar to the shape of a parabola, under the effect of gravity.
b. Movement of the arms and legs will not influence the flight path of the center of gravity:
The movement of the arms and legs can affect the body's orientation and position in the air, but it does not directly influence the flight path of the center of gravity. The center of gravity is determined by the distribution of mass in the body and remains unaffected by the movement of limbs during airborne motion.
c. Air resistance influences the flight path of the center of gravity, but only if the body is moving rapidly
Air resistance can have an impact on the flight path of the center of gravity, especially if the body is moving rapidly through the air. Air resistance creates a drag force that opposes the body's motion, affecting the trajectory and influencing the flight path of the center of gravity.
In summary, when a human body is airborne, the center of gravity follows a parabolic flight path, the movement of the arms and legs does not influence the flight path of the center of gravity directly, and air resistance can influence the flight path of the center of gravity, particularly when the body is moving rapidly.

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The critical angle of the transparent material is 35.3 degrees.

The critical angle is the angle of incidence at which the angle of refraction is 90 degrees. In this case, the angle of refraction is 32 degrees. Therefore, the critical angle is calculated as follows:

sin(critical angle) = sin(90 degrees) / sin(angle of refraction)

sin(critical angle) = 1 / sin(32 degrees)

sin(critical angle) = 0.574

critical angle = arcsin(0.574)

critical angle = 35.3 degrees

Therefore, the critical angle of the transparent material is 35.3 degrees.

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